ASGA18CLWA - Séparateur FUJITSU - Free user manual and instructions

Product Type	Split Air Conditioner
Brand	Fujitsu
Model	ASGA18CLWA
Indoor Unit Dimensions (WxHxD)	998 x 320 x 228 mm
Outdoor Unit Dimensions (WxHxD)	790 x 620 x 290 mm
Indoor Unit Weight	12 kg
Outdoor Unit Weight	35 kg
Power Supply	230V~ 50Hz
Cooling Capacity	5.0 kW (17,060 BTU/h)
Heating Capacity	5.8 kW (19,790 BTU/h)
Energy Efficiency Ratio (EER)	3.21 W/W
Refrigerant Type	R410A
Airflow Rate (Cooling)	550 m³/h
Sound Level (Indoor, Low/High)	26 / 42 dB(A)
Main Functions	Cooling, Heating, Dehumidification, Fan, Sleep Mode, Timer
Cleaning & Maintenance	Clean air filter every 2 weeks, outdoor unit coil annually
Safety Features	Auto restart, overheat protection, anti-freeze protection
Spare Parts & Reparability	Available: remote control, air filter, fan motor, PCB
Warranty	2 years (parts and labor)

Frequently Asked Questions - ASGA18CLWA FUJITSU

How do I clean the air filter?

Open the front panel, remove the filter, wash with mild detergent and water, dry completely before reinstalling. Clean every 2 weeks under normal use.

The unit is not cooling properly. What should I check?

First, ensure the set temperature is below room temperature. Check if the air filter is clean. Also verify that doors and windows are closed. If issue persists, may require professional servicing.

Can I use an extension cord for power supply?

No, never use an extension cord. The unit must be directly connected to a dedicated circuit with the correct rating (230V, 15A min). Use of extension cord can cause fire hazard.

What is the recommended operating temperature range?

For cooling: 18°C to 32°C (outdoor). For heating: -10°C to 24°C (outdoor). Indoor set temperature can be adjusted between 16°C and 30°C.

How do I reset the timer?

Press the TIMER button on the remote to cancel any set timer. Or turn the unit off and on using the power button to clear all timer settings.

Why does the outdoor unit produce water?

During cooling mode, the outdoor unit may discharge condensate water. This is normal. Ensure the drain hose is not blocked or kinked.

What should I do if the remote control is not working?

Replace the AAA batteries with new ones. Ensure you are pointing directly at the indoor unit. If still not working, check if the receiver on the unit is obstructed.

How often should I schedule professional maintenance?

It is recommended to have a professional service at least once a year. They will check refrigerant levels, clean coils, and inspect electrical connections.

Can I run the unit without the air filter?

No, never operate without the filter. Dust will accumulate on the coils and damage the unit. Always keep the filter installed and clean.

What does the 'SLEEP' mode do?

Sleep mode gradually adjusts temperature to provide comfort while saving energy. Typically, it raises the set temperature by 1°C after 1 hour and another 1°C after 2 hours.

USER MANUAL ASGA18CLWA FUJITSU

Front view of a rectangular electronic device with horizontal and vertical lines (no text or symbols)

OWNER'S MANUAL AIR CONDITIONER (Wall Mounted type)

Before using this product, read these instructions thoroughly and keep this manual for future reference.

MODEL:

Please write down the model name.

(Refer to the rating label.)

Contents

Safety precautions 01

Parts name 05

Operation and introduction of remote contr oller 06

Clean and maintenance 10

Checked items before maintenance 11

Installation notice 12

Installation of indoor unit 14

Installation of outdoor unit 17

Test and operation 19

Configuration of connection pipe 20

Specialist's Manual 22

Explanation of Symbols

This symbol indicates the possibility of death or serious injury.

This symbol indicates the possibility of injury or damage to property.

Indicates important but not hazard-related information, used to indicate risk of property damage.

Exception Clauses

Manufacturer will bear no responsibilities when personal injury or property loss is caused by the following reasons.

1. Damage the product due to improper use or misuse of the product;
2. Alter, change, maintain or use the product with other equipment without abiding by the instruction manual of manufacturer;
3. After verification, the defect of product is directly caused by corrosive gas;
4. After verification, the defects are due to improper operation during transportation of product;
5. Operate, repair, maintain the unit without abiding by instruction manual or related regulations;
6. After verification, the problem or dispute is caused by the quality specification or performance of parts and components that produced by other manufacturers;
7. The damage is caused by natural calamities, bad using environment or force majeure.

If it needs to install, move or maintain the air conditioner, please contact dealer or local service center to conduct it at first. Air conditioner must be installed, moved or maintained by appointed unit. Otherwise, it may cause serious damage or personal injury or death.

When refrigerant leaks or requires discharge during installation, maintenance, or disassembly, it should be handled by certified professionals or otherwise in compliance with local laws and regulations.

This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety.

Children should be supervised to ensure that they do not play with the appliance.

The refrigerant

• To realize the function of the air conditioner unit, a special refrigerant circulates in the system. The used refrigerant is the fluoride R32, which is specially cleaned. The refrigerant is flammable and inodorous. Furthermore, it can lead to explosion under certain conditions. But the flammability of the refrigerant is very low. It can be ignited only by fire.
• Compared to common refrigerants, R32 is a nonpolluting refrigerant with no harm to the ozonosphere. The influence upon the greenhouse effect is also lower. R32 has got very good thermodynamic features which lead to a really high energy efficiency. The units there fore need a less filling.

WARNING

Do not use means to accelerate the defrosting process or to clean, other than those recommended by the manufacture. Should repair be necessary, contact your nea rest authorized Service Centre. Any repairs carried out by unqualified personnel may be dangerous. The appliance shall be stored in a room without continuously operating ignition sources. (for example: open flames, an operating gas appliance or an operating electric heater.) Do not pierce or burn. Appliance shall be installed, operated and stored in a room with a floor area larger than X_m^2 .

(Please refer to table "a" in section of "Safety operation of flammable refrigerant" for space X.) Appliance filled with flammable gas R32. For repairs, strictly follow manufacturer's instructions only .Be aware that refrigerants may not contain an odour Read specialist's manual.

This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety. Children should be supervised to ensure that they do not play with the appliance.

1) Frequency band(s) in which the radio equipment operates: 2400MHz-2483.5MHz
2) Maximum radio-frequency power transmitted in the frequency band(s) in which the radio equipment operates: 20dBm

R32: 675

This marking indicates that this product should not be disposed with other house hold wastes. To prevent possible harm to the environment or human health from uncontrolled waste throu-

ghout the EU. To prevent possible harm to the environment or human health.

From uncontrolled waste disposal, recycle it responsibly to promote the sustainable reuse of material resources. To return your used device, please use the return and collection systems or contact the retailer where the product was purchased. They can take this product for environmental safe recycling.

If it needs to install, move or maintain the air conditioner, please contact dealer or local service center to conduct it at first. Air conditioner must be installed, moved or maintained by appointed unit. Otherwise, it may cause serious damage or personal injury or death.

Safety operation of flammable refrigerant

Qualification requirement for installation and maintenance man

- All the work men who are engaging in the refrigeration system should bear the valid certification awarded by the authoritative organization and the qualification for dealing with the refrigeration system recognized by this industry. If it needs other technician to maintain and repair the appliance, they should be supervised by the person who bears the qualification for using the flammable refrigerant.

- It can only be repaired by the method suggested by the equipment's manufacturer.

Installation notes

• The air conditioner must be installed in a room that is larger than the minimum room area. The minimum room area is shown on the nameplate or following table a.
• It is not allowed to drill hole or burn the connection pipe.
• Leak test is a must after installation.

table a - Minimum room area ( m^2 )

Charge amount (kg)	floor location	mounted	wall window mounted	ceiling mounted
≤1.2	/	/	/	/
1.3	14.5	5.2	1.6	1.1
1.4	16.8	6.1	1.9	1.3
1.5	19.3	7	2.1	1.4
1.6	22	7.9	2.4	1.6
1.7	24.8	8.9	2.8	1.8
1.8	27.8	10	3.1	2.1
1.9	31	11.2	3.4	2.3
2	34.3	12.4	3.8	2.6
2.1	37.8	13.6	4.2	2.8
2.2	41.5	15	4.6	3.1
2.3	45.4	16.3	5	3.4
2.4	49.4	17.8	5.5	3.7
2.5	53.6	19.3	6	4

Maintenance notes

• Check whether the maintenance area or the room area meet the requirement of the nameplate.
• It's only allowed to be operated in the rooms that meet the requirement of the nameplate.
• Check whether the maintenance area is well-ventilated.

• The continuous ventilation status should be kept during the operation process.

• Check whether there is fire source or potential fire source in the maintenance area.

• The naked flame is prohibited in the maintenance area; and the "no smoking" warning board should be hanged.
• Check whether the appliance mark is in good condition.
• Replace the vague or damaged warning mark.

Welding

• If you should cut or weld the refrigerant system pipes in the process of maintaining, please follow the steps as below:
  a. Shut down the unit and cut power supply
  b. Eliminate the refrigerant
  c. Vacuuming
  d. Clean it with N_2 gas
  e. Cutting or welding
  f. Carry back to the service spot for welding
• The refrigerant should be recycled into the specialized storage tank.
• Make sure that there isn't any naked flame near the outlet of the vacuum pump and it's well-ventilated.

Filling the refrigerant

• Use the refrigerant filling appliances specialized for R32. Make sure that different kinds of refrigerant won't contaminate with each other.
• The refrigerant tank should be kept upright at the time of filling refrigerant.
• Stick the label on the system after filling is finished (or haven't finished).
• Don't overfilling.
• After filling is finished, please do the leakage detection before test running; another time of leak detection should be done when it's removed.

Safety instructions for transportation and storage

• Please use the flammable gas detector to check before unload and open the container.
  • No fire source and smoking.
• According to the local rules and laws.

WARNING

Installation

• Installation or maintenance must be performed by qualified professionals.
- The appliance shall be installed in accordance with national wiring regulations.
- According to the local safety regulations, use qualified power supply circuit and circuit breaker.
- All wires of indoor unit and outdoor unit should be connected by a professional.
- Be sure to cut off the power supply before proceeding any work related to electricity and safety.
• Make sure the power supply matches with the requirement of air conditioner.
- Unstable power supply or incorrect wiring may result in electric shock, fire hazard or malfunction. Please install proper power supply cables before using the air conditioner.

• The grounding resistance should comply with national electric safety regulations.
  • Air Conditioner should be properly grounded. Incorrect grounding may cause electric shock.
• Do not put through the power before finishing installation.
• Do install the circuit breaker. If not, it may cause malfunction.
• An all-pole disconnection switch having a contact separation of at least 3mm in all poles should be connected in fixed wiring.
• Circuit breaker should be included magnet buckle and heating buckle function. It can protect the overload and circuit-short.

CAUTION

Installation

• Instructions for installation and use of this product are provided by the manufacturer.
• Select a location which is out of reach for children and far away from animals or plants. If it is unavoidable, please add the fence for safety purpose.
• The indoor unit should be installed close to the wall.
• Don't use unqualified power cord.
• If the length of power connection wire is insufficient, please contact the supplier for a new one.
• The appliance must be positioned so that the plug is accessible.

• For the air conditioner with plug, the plug should be reachable after finishing installation.

• For the air conditioner without plug, a circuit breaker must be installed in the line.

• The yellow-green wire in air conditioner is grounding wire, which can't be used for other purposes.
• The air conditioner is the first class electric appliance. It must be properly grounder with specialized grounding device by a professional. Please make sure it is always grounded effectively, otherwise it may cause electric shock.
• The temperature of refrigerant circuit will be high, please keep the interconnection cable away from the copper tube.

WARNING

Operation and Maintenance

- This appliance can be used by children aged from 8 years and above and persons with reduced physical, sensory or mental capabilities or lack of experience and knowledge if they have been given supervision or instruction concerning use of the appliance in a safe way and understand the hazards involved.

• Children shall not play with the appliance.

- Cleaning and user maintenance shall not be made by children without supervision.

- If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or similarly qualified persons in order to avoid a hazard.

- Do not connect air condi-

tioner to multi-purpose socket. Otherwise, it may cause fire hazard.

- Do disconnect power supply when cleaning air conditioner. Otherwise, it may cause electric shock.

- Do not wash the air conditioner with water to avoid electric shock.

- Do not spray water on indoor unit. It may cause electric shock or malfunction.

- Do not repair air conditioner by yourself. It may cause electric shock or damage. Please contact dealer when you need to repair air conditioner.

• After removing the filter, do not touch fins to avoid injury.

- Do not extend fingers or objects into air inlet or air outlet. It may cause personal injury or damage.

CAUTION

Operation and Maintenance

• Do not spill water on the remote controller, otherwise the remote controller may be broken.
• Do not use fire or hair dry-er to dry the filter to avoid deformation or fire hazard.
• Do not block air outlet or air inlet. It may cause malfunction.
• Do not step on top panel of outdoor unit, or put heavy objects. It may cause damage or personal injury.

• When below phenomenon occurs, please turn off air conditioner and disconnect power immediately, and then contact the dealer or qualified professionals for service.

• Power cord is overheating or damaged.

• There's abnormal sound during operation.
• Circuit breaker trips off

frequently.

• Air conditioner gives off burning smell.
- Indoor unit is leaking.

Indoor Unit

■ If remote controller is lost or damaged, please use aux.button to turn on or turn off the air conditioner. The operation in details is as below: As shown in the figure, open panel and press aux.button to turn off the air conditioner. When the air conditioner is turned on, it will operate under auto mode.

Outdoor Unit

NOTE

- Actual product may be different from above graphics, please refer to actual product.

Display

NOTE

• This is the general introduction and the color of indicator is only for reference. Please refer to the actual display.
• Display content may be different from the actual. Please refer to the actual display.

Buttons on remote controller

Introduction for icons on display screen

		Sensor
		Set fan speed
		Powerful mode
		Send signal
Operation mode		Auto mode
		Cool mode
		Dry mode
		Fan mode
		Heat mode
		Sleep mode
		8°C heating function
		Health mode
		Scavenging function
		Auto Clean function
Temp. display type
		Indoor ambient temp.
		Outdoor ambient temp.
		Clock
		Set temperature
		WiFi function
		Set time
		TIMER ON / TIMER OFF
		Light
		Up & down swing
		Child lock

Introduction for buttons on remote controller

NOTE

• This is a general use remote controller. It could be used for the air conditioner with multifunction. For the functions which the model doesn't have, if press the corresponding button on the remote controller, the unit will keep the original running status.
• After putting through the power, the air conditioner will give out a sound. Power indicator " 🔊" is ON. After that, you can operate the air conditioner by using remote controller.
• Under on status, pressing the button on the remote controller, the signal icon " 🔺" on the display of remote controller will blink once and the air conditioner will give out a "di" sound, which means the signal has been sent to the air conditioner.
• Under off status, set temperature and clock icon will be displayed on the display of remote controller (If timer on, timer off and light functions are set, the corresponding icons will be displayed on the display of remote controller at the same time); Under on status, the display will show the corresponding set function icons.

On/Off

button

Press this button to turn on the unit. Press this button again to turn off the unit.

NOTE

- In Cool or Dry mode whenever the set temperature is below 24^ C (i.e. 16^ C to 23^ C or whatever is applicable), when turning on with this remote control, the default setting temperature is 24^ C.

Mode

button

Each time you press this button, a mode is selected in a sequence that goes from AUTO, COOL, DRY, FAN, and HEAT *, as the following:

graph LR
    A["AUTO COOL DRY PAN HEAT"] --> B["Output Step"]

- NOTE: Only for models with heating function.

Fan

button

This button is used for setting Fan Speed in the sequence that goes from AUTO, □, □□, to □□□, then back to Auto.

button

Press ▲ / ▼ button to increase / decrease set temperature. In AUTO mode, set temperature is not adjustable.

When setting Timer On or Timer Off, press "▲" or "▼" button to adjust the time.

Swing

button

Press this button to set up & down swing angle.

Sleep

button

Under Cool, Heat or Dry mode, press this button to turn on Sleep function.

Press this button again to cancel Sleep function. Under Fan and Auto modes, this function is unavailable.

Temp

button

Press this button, you can see indoor set temperature, indoor ambient temperature on indoor unit's display. The setting on remote controller is selected circularly as below:

graph TD
    A["House Symbol"] --> B["House Symbol"]
    B --> C["House Symbol"]
    C --> A
    style A fill:#f9f,stroke:#333
    style B fill:#ccf,stroke:#333
    style C fill:#cfc,stroke:#333

NOTE

- Outdoor temperature display is not available for some models. At that time, indoor unit receives "☐" signal, while it displays indoor set temperature.

Powerful

button

Press this button to activate / deactivate the Powerful function.

Sensor

button

Press this button to start Sensor function and "F" will be displayed on the remote controller. After this function is set, the remote controller will send the detected ambient temperature to the controller and the unit will automatically adjust the indoor temperature according to the detected temperature. Press this button again to close Sensor function and "F" will disappear.

Please put the remote controller near user when this function is set. Do not put the remote control-

ler near the object of high temperature or low temperature in order to avoid detecting inaccurate ambient temperature. When Sensor function is turned on, the remote controller should be put within the area where indoor unit can receive the signal sent by the remote controller.

Timer

button

• Under ON status, press this button to set timer OFF; Under OFF status, press this button to set timer ON.
• Press this button once and the characters of HOUR ON (OFF) will flash to be displayed. Meanwhile, press "▲" button or "▼" button to adjust timer setting (time will change quickly if holding "▲" or "▼" button). Time setting range is 0.5\~24 hours. Press this button again to confirm timer setting and the characters of HOUR ON (OFF) will stop flashing.

If the characters are flashing but you haven't press timer button, timer setting status will be quit after 5s. If timer is confirmer, press this button again to cancel timer.

Auto Clean

button

Press this button in COOL or DRY mode to turn on Auto Clean function.

When this function is started up, indoor fan will still operate at low fan speed for a while after turning off the unit by remote controller.

Light

button

Press this button to turn on the display's light and press this button again to turn off the display's light.

Function introduction for combination buttons

Combination of "▲" and "▼" buttons: About child lock

Press "▲" and "▼" buttons simultaneously 3s to lock or unlock the keypad. If the remote controller is locked, □ is displayed. In this case, pressing any button, □ blinks three times.

Combination of "MODE" and "▼" buttons: About switch between Fahrenheit and centigrade

At unit OFF, press "MODE" and "▼" buttons simultaneously to switch between °C and °F.

Combination of "TEMP" and "TIMER" buttons: About Energy-saving Function

Press "TEMP" and "TIMER" simultaneously in COOL mode to start energy-saving function.

Nixie tube on the remote controller displays "SE".

Repeat the operation to quit the function.

Combination of "TEMP" and "TIMER" buttons: About 8°C Heating Function

Press "TEMP" and "TIMER" simultaneously in HEAT mode to start 8°C Heating Function. Nixie tube on the remote controller displays "\$" and a selected temperature of "8°C". (46°F if Fahrenheit is adopted). Repeat the operation to quit the function.

Coil Cleaning function

Under unit off status, hold "Mode" and "Fan" buttons simultaneously for 5s to turn on or turn off the Coil Cleaning function. When the Coil Cleaning function is turned on, indoor unit displays "CL". During the Coil Cleaning process of evaporator, the unit will perform fast cooling or fast heating. There may be some noise, which is the sound of flowing liquid or thermal expansion or cold shrinkage. The air conditioner may blow cool or warm air, which is a normal phenomenon. During cleaning process, please make sure the room is well ventilated to avoid affecting the comfort.

NOTE

• The Coil Cleaning function can only work under normal ambient temperature. If the room is dusty, clean once a month; if not, clean once every three months. After the Coil Cleaning function is turned on, you may leave the room. When Coil Cleaning is finished, the air conditioner will enter standby mode.
• This function is applicable for some models.

Replacement of batteries in remote controller

1. Press the back side of remote controller marked with " [ICON]", as shown in the fig, and then push out the cover of battery box along the arrow direction.
2. Replace two #7 (AAA 1.5V) dry batteries, and make sure the position of "+" polar and "-" polar are correct.
3. Reinstall the cover of battery box.

NOTICE

• During operation, point the remote control signal sender at the receiving window on indoor unit.
• The distance between signal sender and receiving window should be no more than 8m, and there should be no obstacles between them.
• Signal may be interfered easily in the room where there is fluorescent lamp or wireless telephone; remote controller should be close to indoor unit during operation.
• Replace new batteries of the same model when replacement is required.
• When you don't use remote controller for a long time, please take out the batteries.
• If the display on remote controller is fuzzy or there's no display, please replace batteries.

Clean and maintenance

WARNING

■ Turn off the air conditioner and disconnect the power before cleaning the air conditioner to avoid electric shock.
■ Do not wash the air conditioner with water to avoid electric shock.
■ Do not use volatile liquid to clean the air conditioner.
■ Do not use liquid or corrosive detergent to clean the appliance and do not splash water or other liquid onto it, otherwise, it may damage the plastic components, even cause electric shock.

Clean surface of indoor unit

When the surface of indoor unit is dirty, it is recommended to use a soft dry cloth or wet cloth to wipe it.

NOTICE

- Do not remove the panel when c leaning it.

Clean filter

1. Open panel

Pull out the panel to a certain angle as shown in the fig.

Illustration of hands holding a rectangular object with an arrow indicating rotation (no text or symbols)

2. Remove filter

Remove the filter as indicated in the fig.

Hand placing a grid on a surface with an arrow indicating direction (no text or symbols)

3. Clean filter

• Use dust catcher or water to clean the filter.
• When the filter is very dirty, use the water (below 45°C) to clean it, and then put it in a shady and cool place to dry.

Illustration of hands cutting a striped panel with a knife (no text or symbols)

4. Install filter

Install the filter and then close the panel cover tightly.

Illustration of a hand pressing down on a wall-mounted air conditioner cover (no text or symbols)

WARNING

■ The filter should be cleaned every three months. If there is much dust in the operation environment, clean frequency can be increased.
■ After removing the filter, do not touch fins to avoid injury.
■ Do not use fire or hair dryer to dry the filter to avoid deformation or fire hazard.

NOTICE: Checking before use-season

1. Check whether air inlets and air outlets are blocked.
2. Check whether air switch, plug and socket are in good condition.
3. Check whether filter is clean.
4. Check whether mounting bracket for outdoor unit is damaged or corroded. If yes, please contact dealer.
5. Check whether drainage pipe is damaged.

NOTICE: Checking after use-season

1. Disconnect power supply.
2. Clean filter and indoor unit's panel.
3. Check whether mounting bracket t for outdo or unit is damaged or corroded. If yes, please contact dealer.

Notice for recovery

1. Many packing materials are recyclable materials. Please dispose them in appropriate recycling unit.
2. If you want to dispose the air conditioner, please contact local dealer or consultant service center for the correct disposal method.

Error Code

When air conditioner status is abnor mal, temperature indicator on indoor uni t will blink to display corresponding error code. Please refer to below list for identification of error code.

Error code	Troubleshooting
U8, H6, H3,E1, E5, E6,E8	It can be eliminated after restarting the unit.If not, please contact qualified professionals for service.
C5, F0, F1,F2	Please contact qualified professionals for service.

NOTE

- If there're other error codes, please contact qualified professionals for service.

Checked items before maintenance

General phenomenon analysis

Pleas e che ck be low it ems before asking for maintenance. If the malfunction still can't be eliminated, please contact local dealer or qualified professionals.

Phenomenon	Check items	Solution
Indoor unit can't receive remote co-ntroller's signal or remote controller has no action.	Whether it's interfered severely (such as static electricity, stable voltage?)	Pull out the plug.Reinsert the plug after about 3min, and then turn on the unit again.
	Whether remote co-ntroller is within the signal receiving range?	Signal receiving range is 8m.
	Whether there are obstacles?	Remove obstacles.
	Whether remote co-ntroller is pointing at the receiving window?	Select proper angle and point the remote controller at the receiving window on indoor unit.
	Is sensitivity of rem-ote controller low; fuzzy display or no display?	Check the batteries.If the power of batteries is to o low , please replace them.
	No display when operating remote cont-roller?	Check whether rem-ote controller appears to be damaged. If yes, replace it.
	Fluorescent lamp in room?	Take the remote con-troller close to indoor unit. Turn off the fluo-rescent lamp and then try it again.
No air emitted from indoor unit	Air inlet or air outlet of indoor unit is blocked?	Eliminate obstacles.
	Under heating mode, indoor temperature is reached to set temp-erature?	After reaching to set temperature, indoor unit will stop blowing out air.
	Heating mode is turned on just now?	In order to prevent blowing out cold air, indoor unit will be started after delaying for several minutes, which is a normal phenomenon.
Air conditioner can't operate	Power failure?	Wait until power recovery.
	Is plug loose?	Reinsert the plug.
	Air switch trips off or fuse is burnt out?	Ask professional to replace air switch or fuse.
	Wiring has malfunction?	Ask professional to replace it.
	Unit has restarted immediately after stopping operation?	Wait for 3min, and then turn on the unit again.
	Whether the function setting for remote controller is correct?	Reset the function.
Mist is emi-tted from indoor unit's air outlet	Indoor temperature and humidity is high?	Because indoor air is cooled rapidly.After a while, indoor temperature and humidity will be decrease and mist will disappear.

Phenomenon	SolutionCheck items
Odours are emitted	Whether there's od- our source, such as furniture and cigarette, etc.	Eliminate the odour source. Clean the filter.
Set temper- rature can't be adjusted	Unit is operating un- der auto mode?	Temperature can't be adjusted under auto mode. Please switch the operation mode if you need to adjust temperature.
	Your required temp- erature exceeds the set temperature range?	Set temperature range: 16 C ~30 C.
Cooling (heating) effect is not good.	Voltage is too low?	Wait until the voltage resumes normal.
	Filter is dirty? Clean the filter.
	Set temperature is in proper range?	Adjust temperature to proper range.
	Door and window are open?	Close door and window.
Air conditi- oner operates abnormally	Whether there's inter- rference, such as thunder, wireless devices, etc.	Disconnect power, put back power, and then turn on the unit again.
Outdoor unit has vapor	Heating mode is turned on?	During defrosting under heating mode, it may generate vapor, which is a normal phenomenon.
"Water flowing" noise	Air conditioner is turned on or turned off just now?	The noise is the sound of refrigerant flowing inside the unit, which is a normal phenomenon.
Cracking noise	Air conditioner is turned on or turned off just now?	This is the sound of friction caused by expansion and or contraction of panel or other parts due to the change of temp- erature.

WARNING

■ When below phenomenon occurs, please turn off air conditioner and disconnect power immediately, and then contact the dealer or qualified professionals for service.
- Power cord is overheating or damaged.
- There's abnormal sound during operation.
• Air switch trips off frequently.
● Air conditioner gives off burning smell.
- Indoor unit is leaking.
■ Do not repair or refit the air conditioner by yourself.
■ If the air conditioner operates under abnormal conditions, it may cause malfunction, electric shock or fire hazard.

Safety precautions for installing and relocating the unit

To ensure safety, please be mindful of the following precautions.

WARNING

■ When installing or relocating the unit, be sure to keep the refrigerant circuit free from air or substances other than the specified refrigerant.

Any presence of air or other foreign substance in the refrigerant circuit will cause system pressure rise or compressor rupture, resulting in injury.

- When installing or moving this unit, do not charge the refrigerant which is not comply with that on the nameplate or unqualified refrigerant.

Otherwise, it may cause abnormal operation, wrong action, mechanical malfunction or even serious safety accident.

■ When refrigerant needs to be recovered during relocating or repairing the unit, be

WARNING

sure that the unit is running in cooling mode. Then, fully close the valve at high pressure side (liquid valve). About 30-40 seconds later, fully close the valve at low pressure side (gas valve), immediately stop the unit and disconnect power. Please note that the time for refrigerant recovery should not exceed 1 minute.

If refrigerant recovery takes too much time, air may be sucked in and cause pressure rise or compressor rupture, resulting in injury.

■ During refrigerant recovery, make sure that liquid valve and gas valve are fully closed and power is disconnected before detaching the connection pipe.

If compressor starts running when stop valve is open and connection pipe is not yet connected, air will be sucked in and cause pressure rise or compressor rupture, resulting in injury.

- When installing the unit, make sure that connection pipe is securely connected before the compressor starts running.

If compressor starts running when stop valve is open and connection pipe is not yet connected, air will be sucked in and cause pressure rise or compressor rupture, resulting in injury.

■ Prohibit installing the unit at the place where there may be leaked corrosive gas or flammable gas.

If there is leaked gas around the unit, it may cause explosion and other accidents.

■ Do not use extension cords for electrical connections. If the electric wire is not long enough, please contact a local service center authorized and ask for a proper electric wire.

Poor connections may lead to electric shock or fire.

■ Use the specified types of wires for electrical connections between the indoor and outdoor units. Firmly clamp the wires so that their terminals receive no external stresses.

Electric wires with insufficient capacity, wrong wire connections and insecure wire terminals may cause electric shock or fire.

Tools for installation

1 Level meter

2 Screw driver

3 Impact drill

4 Drill head

5 Pipe expander

6 Torque wrench

7 Open-end wrench

8 Pipe cutter

9 Leakage detector

10 Vacuum pump

11 Pressure meter

12 Universal meter

13 Inner hexagon spanner

14 Measuring tape

NOTICE

- Please contact the local agent for installation.

- Don't use unqualified power cold.

Selection of installation location

Basic requirement

Installing the unit in the following places may cause malfunction. If it is unavoidable, please consult the local dealer:

1. The place with strong heat sources, vapors, flammable or explosive gas, or volatile objects spread in the air.

2. The place with high-frequency devices (such as welding machine, medical equipment).

3. The place near coast area.

4.The place with oil or fumes in the air.

5.The place with sulfureted gas.

1. Other places with special circumstances.

2. The appliance shall not be installed in the laundry.

8It's not allowed to be installed on the unstable or motive base structure (such as truck) or in the corrosive environment (such as chemical factory).

Indoor unit

1. There should be no obstruction near air inlet and air outlet.
2. Select a location where the condensation water can be dispersed easily and won't affect other people.
3. Select a location which is convenient to connect the outdoor unit and near the power socket.
4. Select a location which is out of reach for children.
5. The location should be able to withstand the weight of indoor unit and won't increase noise and vibration.
6. The appliance must be installed 2.5m above floor.
7. Don't install the indoor unit right above the electric appliance.
8. Please try your best to keep way from fluorescent lamp.

Outdoor unit

1. Select a location where the noise and outflow air emitted by the outdoor unit will not affect neighborhood.
2. The location should be well ventilated and dry, in which the outdoor unit won't be exposed directly to sunlight or strong wind.
3. The location should be able to withstand the weight of outdoor unit.
4. Make sure that the installation follows the requirement of installation dimension diagram.
5. Select a location which is out of reach for children and far away from animals or plants. If it is unavoidable, please add the fence for safety purpose.

Safety precaution

1. Must follow the electric safety regulations when installing the unit.
2. According to the local safety regulations, use qualified power supply circuit and air switch.

Requirements for electric connection

1. Make sure the power supply matches with the requirement of air conditioner. Unstable power
   supply or incorrect wiring
   ease install proper power supply cables before using the air conditioner.
2. Properly connect the live wire, neutral wire and grounding wire of power socket.
3. Be sure to cut off the power supply before proceeding any work related to electricity and safety
4. Do not put through the power before finishing installation.
5. If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or similarly qualified persons in order to avoid a hazard.
6. The temperature of refrigerant circuit will be high, please keep the interconnection cable away from the copper tube.
7. The appliance shall be installed in accordance with national wiring regulations.

Grounding requirement

1. The air conditioner is the first class electric appliance. It must be properly grounded with specialized grounding device by a professional. Please make sure it is always grounded effectively, otherwise it may cause electric shock.
2. The yellow-green wire in air conditioner is grounding wire, which can 't be used for other purposes.
3. The grounding resistance should comply with national electric safety regulations.
4. The appliance must be positioned so that the plug is accessible.
5. An all-pole disconnection switch having a contact separation of at least 3mm in all poles should be connected in fixed wiring.

Air switch capacity

Including an air switch with suitable capacity, please note the following table. Air switch should be included magnet buckle and heating buckle function, it can protect the circuit-short and overload. (Caution: please do no t use the fuse only for protecting the circuit)

Air-conditioner	Air switch capacity
12K	10A
18K、22K	16A

Installation of indoor unit

Step 1:

Choose installation location

Recommend the installation location to the client and then confirm it with the client.

Step 2:

Install wall-mounting frame

1. Hang the wall-mounting frame on the wall; adjust it in horizontal position with the level meter and then point out the screw fixing holes on the wall.
2. Drill the screw fixing holes on the wall with impact drill (the specification of drill head should be the same as the plastic expansion particle) and then fill the plastic expansion particles in the holes.
3. Fix the wall-mounting frame on the wall with tapping screws and then check if the frame is firmly installed by pulling the frame. If the plastic expansion particle is loose, please drill another fixing hole nearby.

Step 3:

Open piping hole

1. Choose the position of piping hole according to the direction of outlet pipe. The position of piping hole should be a little lower than the wall-mounted frame, shown as below.

NOTE

• The wall panel is for illustrative purposes only, please refer to the actual installation.

• Please refer to the actual circumstances for the number of screws and the position of screws.

• When installation is finished, pull the mounting plate with hand to confirm whether it is fixed tightly. The force distribution for all screws should be uniform.

• Open a piping hole with the diameter of 55 or 70 on the selected outlet pipe position. In order to drain smoothly, slant the piping hole on the wall slightly downward to the outdoor side with the gradient of 5 - 10^ .

NOTE

- Pay attention to dust prevention -a sures when opening the hole.

Step 4:

Outlet pipe

1. The pipe can be led out in the direction of right, rear right, left or rear left.

1. When select leading out the pipe from left or right, please cut off the corresponding hole on the bottom case.

Step 5:

Connect the pipe of indoor unit

1. Aim the pipe joint at the corresponding bellmouth.
2. Pretighten the union nut with hand.

1. Adjust the torque force by referring to the following sheet. Place the open-end wrench on the pipe joint and place the torque wrench on the union nut. Tighten the union nut with torque wrench.

Hex nut diameter	Tightening torque (N·m)
1/4"	15~20
3/8"	30~40
1/2"	45~55
5/8"	60~65
3/4"	70~75

1. Wrap the indoor pipe and joint of connection pipe with insulating pipe, and then wrap it with tape.

Step 6: Install drain hose

1. Connect the drain hose to the outlet pipe of indoor unit.

1. Bind the joint with tape.

NOTE

• Add insulating pipe in the indoor drain hose in order to prevent condensation.
• The plastic expansion particles are not provided.

Step 7: Connect wire of indoor unit

NOTICE

• All wires of indoor unit and outdoor unit should be connected by a professional.
• If the length of power connection wire is insufficient, please contact the supplier for a new one. Avoid extending the wire by yourself.
• For the air conditioner with plug, the plug should be reachable after finishing installation.

• For the air conditioner without plug, an air switch must be installed in the line. The air switch should be all-pole parting and the contact parting distance should be more than 3mm.

• Open the panel, remove the screw on the wiring cover and then take down the cover.

1. Make the power connection wire go through the cable-cross hole at the back of indoor unit and then pull it out from the front side.

1. Remove the wire clip; connect the power connection wire to the wiring terminal according to the color; tighten the screw and then fix the power connection wire with wire clip.

NOTICE

- The wiring board is for reference only, please refer to the actual one.

1. Put wiring cover back and then tighten the screw.
2. Close the panel.

Step 8:

Bind up pipe

1. Bind up the connection pipe, power cord and drain hose with the band.

1. Reserve a certain length of drain hose and power cord for installation when binding them. When binding to a certain degree, separate the indoor power and then separate the drain hose.

1. Bind them evenly.
2. The liquid pipe and gas pipe should be bound separately at the end.

NOTICE

• The power cord and control wire can't be crossed or winding.
  • The drain hose should be bound at the bottom.

Step 9:

Hang the indoor unit

1. Put the bound pipes in the wall pipe and then make them pass through the wall hole.
2. Hang the indoor unit on the wall-mounting frame.
3. Stuff the gap between pipes and wall hole with sealing gum.
4. Fix the wall pipe.
5. Check if the indoor unit is installed firmly and closed to the wall.

NOTICE

- Do not bend the drain hose too excessively in order to prevent blocking.

Installation of outdoor unit

Step 1:

Fix the support of outdoor unit (select it according to the actual installation situation)

1. Select installation location according to the house structure.
2. Fix the support of outdoor unit on the selected location with expansion screws.

Line drawing of a front-mounted air conditioner unit with fan and base (no text or symbols)

at least 3cm above the floor

NOTICE

• Take sufficient protective measures when installing the outdoor unit.
- Make sure the support can withstand at least four times of the unit weight.
- The outdoor unit should be installed at least 3cm above the floor in order to install drain joint. (for the model with heating tube, the installation height should be no less than 20cm.)
- For the unit with cooling capacity of 2300W \~ 5000W, 6 expansion screws are needed; for the unit with cooling capacity of 6000W\~8000W, 8 expansion screws are needed; for the unit with cooling capacity of 10000W\~16000W, 10 expansion screws are needed.

Step 2:

Install drain joint (only for some models)

1. Connect the outdoor drain joint into the hole on the chassis, as shown in the picture below.
2. Connect the drain hose into the drain vent.

NOTICE

- As for the shape of drainage joint, please refer to the current product. Do not install the drainage joint in the severe cold area. Otherwise, it will be frosted and then cause malfunction.

Step 3:

Fix outdoor unit

1. Place the outdoor unit on the support.
2. Fix the foot holes of outdoor unit with bolts.

Step 4:

Connect indoor and outdoor pipes

1. Remove the screw on the right handle of outdoor unit and then remove the handle.

1. Remove the screw cap of valve and aim the pipe joint at the bellmouth of pipe.

1. Pretighten the union nut with hand.

1. Tighten the union nut with torque wrench by referring to the sheet below.

Hex nut diameter	Tightening torque(N·m)
1/4"	15~20
3/8"	30~40
1/2"	45~55
5/8"	60~65
3/4"	70~75

Step 5:

Connect outdoor electric wire

1. Remove the wire clip; connect the power connection wire and signal control wire (only for cooling and heating unit) to the wiring terminal according to the color; fix them with screws.

NOTICE

- The wiring board is for reference only, please refer to the actual one.

1. Fix the power connection wire and signal control wire with wire clip (only for cooling and heating unit).

NOTICE

• After tighten the screw, pull the power cord slightly to check if it is firm.
• Never cut the power connection wire to prolong or shorten the distance.

Step 6:

Neaten the pipes

1. The pipes should be placed along the wall, bent reasonably and hidden possibly. Min. semidiameter of bending the pipe is 10cm.
2. If the outdoor unit is higher than the wall hole, you must set a U-shaped curve in the pipe before pipe goes into the room, in order to prevent rain from getting into the room.

NOTICE

- The through-wall height of drain hose should not be higher than the outlet pipe hole of indoor unit.

- The water outlet can't be placed in water in order to drain smoothly.

- Slant the drain hose slightly downwards. The drain hose can't be curved, raised and fluctuant, etc.

Simple line drawing of a rectangular object with a diagonal line extending from it, no text or symbols present.

✗ The drain hose can't be fluctuant

Test and operation

Use vacuum pump

1. Remove the valve caps on the liquid valve and gas valve and the nut of refrigerant charging vent.
2. Connect the charging hose of piezometer to the refrigerant charging vent of gas valve and then connect the other charging hose to the vacuum pump.
3. Open the piezometer completely and operate for 10-15min to check if the pressure of piezometer remains in -0.1MPa.
4. Close the vacuum pump and maintain this status for 1-2min to check if the pressure of piezometer remains in -0.1MPa. If the pressure decreases, there may be leakage.
5. Remove the piezometer, open the valve core of liquid valve and gas valve completely with inner hexagon spanner.
6. Tighten the screw caps of valves and refrigerant charging vent. Reinstall the handle.7.

Leakage detection

1. With leakage detector: Check if there is leakage with leakage detector.
2. With soap water: If leakage detector is not available, please use soap water for leakage detection. Apply soap water at the suspected position and keep the soap water for more than 3min. If there are air bubbles coming out of this position, there's a leakage.

Check after installation

- Check according to the following requirement after finishing installation.

Items to be checked	Possible malfunction
Has the unit been installed firmly?	The unit may drop, shake or emit noise.
Have you done the refrigerant leakage test?	It may cause insufficient cooling(heating) capacity.
Is heat insulation of pipeline sufficient?	It may cause condensation and water dripping.
Is water drained well?	It may cause condensation and water dripping.
Is the voltage of power supply according to the voltage marked on the nameplate?	It may cause malfunction or damage the parts.
Is electric wiring and pipeline installed correctly?	It may cause malfunction or damage the parts.
Is the unit grounded securely?	It may cause electric leakage.
Does the power cord follow the specification?	It may cause malfunction or damage the parts.
Is there any obstruction in the air inlet and outlet?	It may cause insufficient cooling(heating) capacity.
The dust and sundries caused during installation are removed?	It may cause malfunction or damage the parts.
The gas valve and liquid valve of connection pipe are open completely?	It may cause insufficient cooling (heating) capacity.
Is the inlet and outlet of piping hole been covered?	It may cause insufficient cooling (heating) capacity or waste electricity.

Test operation

1. Preparation of test operation

- The client approves the air conditioner. - Specify the important notes for air conditioner to the client.

2. Method of test operation

• Put through the power, press ON/OFF button on the remote controller to start operation.
• Press MODE button to select AUTO, COOL, DRY, FAN and HEAT to check whether the operation is normal or not.
• If the ambient temperature is lower than 16 C, the air conditioner can't start cooling.

Configuration of connection pipe

1. Standard length of connection pipe: 5m, 7.5m, 8m.
2. Min. length of connection pipe.

For the unit with standard connection pipe of 5m, there is no limitation for the min length of connection pipe. For the unit with standard connection pipe of 7.5m and 8m, the min length of connection pipe is 3m.

1. Max. length of connection pipe is shown as below.

Max. length of connection pipe

Cooling capacity	Max. length of connection pipe(m)
5000Btu/h (1465W)	15
7000Btu/h (2051W)	15
9000Btu/h (2637W)	15
12000Btu/h (3516W)	20
18000Btu/h (5274W)	25
22000Btu/h (6450W)	25
24000Btu/h (7032W)	25
28000Btu/h (8204W)	30
36000Btu/h (10548W)	30
42000Btu/h (12306W)	30
48000Btu/h (14064W)	30

1. The calculation method of additional refrigerant oil and refrigerant charging amount after prolonging connection pipe.

After the length of connection pipe is prolonged for 10m at the basis of standard length, you should add 5ml of refrigerant oil for each additional 5m of connection pipe.

The calculation method of additional refrigerant charging amount (on the basis of liquid pipe):

(1) Additional refrigerant charging amount=prolonged length of liquid pipe × additional refrigerant charging amount per meter
(2) Basing on the length of standard pipe, add refrigerant according to the requirement as shown in the table. The additional refrigerant charging amount per meter is different according to the diameter of liquid pipe. See Sheet.

Additional refrigerant charging amount for R32

Piping size		Indoor unit throttle	Outdoor unit throttle
Liquid pipe	Gas pipe	Cooling only, cooling and heating (g / m)	Cooling only (g / m)	cooling and heating (g / m)
1/4"	3/8" or 1/2"	16	12	16
1/4" or 3/8"	5/8" or 3/4"	40	12	40
1/2"	3/4" or 7/8"	80	24	96
5/8"	1" or 1 1/4"	136	48	96
3/4"	-	200 200		200
7/8"	-		280280	280

NOTICE

The additional refrigerant charging amount in Sheet is recommended value, not compulsory.

Pipe expanding method

NOTICE

Improper pipe expanding is the main cause of refrigerant leakage. Please expand the pipe according to the following steps:

A: Cut the pipe

• Confirm the pipe length according to the distance of indoor unit and outdoor unit.
• Cut the required pipe with pipe cutter.

B: Remove the burrs

- Remove the burrs with shaper and prevent the burrs from getting into the pipe.

C: Put on suitable insulating pipe

D: Put on the union nut

- Remove the union nut on the indoor connection

pipe and outdoor valve; install the union nut on the pipe.

E: Expand the port

- Expand the port with expander.

NOTICE

- "A" is different according to the diameter, please refer to the sheet below:

Outer diameter (mm)	A(mm)
	Max Min
Φ6 - 6.35(1/4")	1.3 0.7
Φ9 - 9.52(3/8") 1.6 1.0
Φ12-12.7(1/2")	1.8 1.0
Φ15.8-16(5/8")	2.4 2.2

F: Inspection

- Check the quality of expanding port. If there is any blemish, expand the port again according to the steps above.

the length is equal

improper expanding

leaning

damaged surface

crack

uneven thickness

Working temperature range

	Indoor side DB/WB(°C)	Outdoor side DB/WB(°C)
Maximum cooling		50/3035/24

NOTE

- The operating temperature range (outdoor temperature) for cooling only unit is 18°C\~50°C.

- The following checks shall be applied to installations using flammable refrigerants:

– the charge size is in accordance with the room size within which the refrigerant containing parts are installed;

– the ventilation machinery and outlets are operating adequately and are not obstructed;

- if an indirect refrigerating circuit is being used, the secondary circuit shall be checked for the presence of refrigerant;

– marking to the equipment continues to be visible and legible. Markings and signs that are illegible shall be corrected;

– refrigeration pipe or components are installed in a position where they are unlikely to be exposed to any substance which may corrode refrigerant containing components, unless the components are constructed of materials which are inherently resistant to being corroded or are suitably protected against being so corroded.

- Repair and maintenance to electrical components shall include initial safety checks and component inspection procedures. If a fault exists that could compromise safety, then no electrical supply shall be connected to the circuit until it is satisfactorily dealt with. If the fault cannot be corrected immediately but it is necessary to continue operation, an adequate temporary solution shall be used. This shall be reported to the owner of the equipment so all parties are advised.

- Initial safety checks shall include:

– that capacitors are discharged: this shall be done in a safe manner to avoid possibility of sparking;

– that no live electrical components and wiring are exposed while charging, recovering or purging the system;

– that there is continuity of earth bonding.

- Checking for presence of refrigerant

The area shall be checked with an appropriate refrigerant detector prior to and during work, to ensure the technician is aware of potentially toxic or flammable atmospheres. Ensure that the leak detection equipment being used is suitable for use with all applicable refrigerants, i.e. non-sparking, adequately sealed or intrinsically safe.

• Presence of fire extinguisher

If any hot work is to be conducted on the refrigeration equipment or any associated parts, appropriate

fire extinguishing equipment shall be available to hand. Have a dry powder or CO2 fire extinguisher adjacent to the charging area.

- Ventilated area

Ensure that the area is in the open or that it is adequately ventilated before breaking into the system or conducting any hot work. A degree of ventilation shall continue during the period that the work is carried out. The ventilation should safely disperse any released refrigerant and preferably expel it externally into the atmosphere.

- Checks to the refrigeration equipment

Where electrical components are being changed, they shall be fit for the purpose and to the correct specification. At all times the manufacturer's maintenance and service guidelines shall be followed. If in doubt, consult the manufacturer's technical department for assistance.

- Checks to electrical devices

– that capacitors are discharged: this shall be done in a safe manner to avoid possibility of sparking;

– that no live electrical components and wiring are exposed while charging, recovering or purging the system.

• Repairs to sealed components

During repairs to sealed components, all electrical supplies shall be disconnected from the equipment being worked upon prior to any removal of sealed covers, etc. If it is absolutely necessary to have an electrical supply to equipment during servicing, then a permanently operating form of leak detection shall be located at the most critical point to warn of a potentially hazardous situation.

Particular attention shall be paid to the following to ensure that by working on electrical components, the casing is not altered in such a way that the level of protection is affected. This shall include damage to cables, excessive number of connections, terminals not made to original specification, damage to seals, incorrect fitting of glands, etc.

- Ensure that the apparatus is mounted securely.

- Ensure that seals or sealing materials have not degraded to the point that they no longer serve the purpose of preventing the ingress of flammable atmospheres. Replacement parts shall be in accordance with the manufacturer's specifications.

NOTE: The use of silicon sealant can inhibit the effectiveness of some types of leak detection equipment. Intrinsically safe components do not have to be isolated prior to working on them.

- Repair to intrinsically safe components

Do not apply any permanent inductive or capacitance loads to the circuit without ensuring that this will not exceed the permissible voltage and current permitted for the equipment in use.

Intrinsically safe components are the only types that can be worked on while live in the presence of a flammable atmosphere. The test apparatus shall be at the correct rating.

Replace components only with parts specified by the manufacturer. Other parts may result in the ignition of refrigerant in the atmosphere from a leak.

- Cabling

Check that cabling will not be subject to wear, corrosion, excessive pressure, vibration, sharp edges or any other adverse environmental effects. The check shall also take into account the effects of aging or continual vibration from sources such as compressors or fans.

• Detection of flammable refrigerants

Under no circumstances shall potential sources of ignition be used in the searching for or detection of refrigerant leaks. A halide torch (or any other detector using a naked flame) shall not be used.

- Leak detection methods

Leak detection fluids are suitable for use with most refrigerants but the use of detergents containing chlorine shall be avoided as the chlorine may react with the refrigerant and corrode the copper pipe-work.

- Decommissioning

Before carrying out this procedure, it is essential that the technician is completely familiar with the equipment and all its detail. It is recommended good practice that all refrigerants are recovered safely. Prior to the task being carried out, an oil and refrigerant sample shall be taken in case analysis is required prior to re-use of reclaimed refrigerant. It is essential that electrical power is available before the task is commenced.

a) Become familiar with the equipment and its operation.
b) Isolate system electrically.
c) Before attempting the procedure, ensure that:

• mechanical handling equipment is available, if required, for handling refrigerant cylinders;
  – all personal protective equipment is available and being used correctly;
  – the recovery process is supervised at all times by a competent person;

– recovery equipment and cylinders conform to the appropriate standards.

d) Pump down refrigerant system, if possible.
e) If a vacuum is not possible, make a manifold so that refrigerant can be removed from various parts of the system.
f) Make sure that cylinder is situated on the scales before recovery takes place.
g) Start the recovery machine and operate in accordance with manufacturer's instructions.
h) Do not overfill cylinders. (No more than 80% volume liquid charge).
i) Do not exceed the maximum working pressure of the cylinder, even temporarily.
j) When the cylinders have been filled correctly and the process completed, make sure that the cylinders and the equipment are removed from site promptly and all isolation valves on the equipment are closed off.
k) Recovered refrigerant shall not be charged into another refrigeration system unless it has been cleaned and checked.

- Labelling

Equipment shall be labelled stating that it has been de-commissioned and emptied of refrigerant. The label shall be dated and signed. For appliances containing flammable refrigerants, ensure that there are labels on the equipment stating the equipment contains flammable refrigerant.

- Recovery

When removing refrigerant from a system, either for servicing or decommissioning, it is recommended good practice that all refrigerants are removed safely.

When transferring refrigerant into cylinders, ensure that only appropriate refrigerant recovery cylinders are employed. Ensure that the correct number of cylinders for holding the total system charge are available. All cylinders to be used are designated for the recovered refrigerant and labelled for that refrigerant (i.e. special cylinders for the recovery of refrigerant). Cylinders shall be complete with pressure-relief valve and associated shut-off valves in good working order. Empty recovery cylinders are evacuated and, if possible, cooled before recovery occurs.

The recovery equipment shall be in good working order with a set of instructions concerning the equipment that is at hand and shall be suitable for the recovery of all appropriate refrigerants including, when applicable, flammable refrigerants. In ad-

Specialist's Manual

dition, a set of calibrated weighing scales shall be available and in good working order. Hoses shall be complete with leak-free disconnect couplings and in good condition. Before using the recovery machine, check that it is in satisfactory working order, has been properly maintained and that any associated electrical components are sealed to prevent ignition in the event of a refrigerant release. Consult manufacturer if in doubt.

The recovered refrigerant shall be returned to the refrigerant supplier in the correct recovery cylinder, and the relevant waste transfer note arranged. Do not mix refrigerants in recovery units and especially not in cylinders.

If compressors or compressor oils are to be removed, ensure that they have been evacuated to an acceptable level to make certain that flammable refrigerant does not remain within the lubricant. The evacuation process shall be carried out prior to returning the compressor to the suppliers. Only electric heating to the compressor body shall be employed to accelerate this process. When oil is drained from a system, it shall be carried out safely.