HFM 10T1 - Camera Kern - Free user manual and instructions

Product type	Electronic hanging scale (crane scale)
Brand and model	Kern HFM 10T1
Weighing range (max)	10 000 kg
Readability (d)	1 kg
Taring range (subtraction)	10 000 kg
Reproducibility	5 kg
Linearity	±10 kg
Stabilization time	2 s
Accuracy	0.2% of maximum
Unit of measurement	kg
Enclosure dimensions (W x D x H)	300 x 190 x 230 mm
Overall dimensions (height with hook)	840 mm
Net weight	35 kg
Mains power supply	220-240 V AC 50 Hz
Secondary power supply	9 V, 800 mA
Built-in battery	6 V, 10 Ah (battery life up to 60 h with backlight, charge 14 h)
Remote control	Radio frequency, range approx. 20 m, battery 12 V (type 23A)
Display	Digital, digit height 30 mm, backlight
Enclosure material	Painted metal
Hook and eye material	Nickel-plated steel
Permissible ambient temperature	0 to +40 °C
Relative humidity	0% to 80% non-condensing
Main functions	Zero setting, taring, value hold (Hold), readability change, standby mode, menu settings
Maintenance and cleaning	Clean with a soft cloth and mild window cleaner. Regular maintenance mandatory (visual inspection, dimensions, wear parts) every 3 months.
Safety	Anti-drop safety latch, emergency stop, overload message "-ol-", use prohibited under hanging load
Spare parts and repairability	Original spare parts required. Repairs only by trained personnel. Documentation mandatory.
General information	User manual with logbook. Recommended adjustment weight: 10 t (M1). Warranty void if instructions not followed.

Frequently Asked Questions - HFM 10T1 Kern

How to turn on the HFM 10T1 scale?

Press the ON/OFF key on the scale keyboard. The display lights up and an automatic check is performed. The self-test is complete when 0 kg appears on the screen. Powering on is only possible from the scale keyboard, not from the remote control.

How to perform a tare?

Hang the preload (e.g., a container) on the hook, then press the ZERO key. The display shows 0 kg and the △ indicator lights up. The container weight is stored internally. You can then add the material to be weighed: the net weight is displayed. To clear the tare, unload the scale and press ZERO again.

What to do if the display shows '-ol-'?

The '-ol-' message means that the maximum load (10,000 kg) has been exceeded. Immediately reduce the load and check if the scale has been damaged. Do not use the scale until the problem is resolved.

How to use the hold function?

Press the HOLD key to freeze the current weight value. The HOLD indicator lights up and the value remains displayed even after removing the load. To clear the held value, press HOLD again; the indicator turns off.

How to change readability (d)?

Press the d= 1/2/5 kg key to switch between available divisions. For the HFM 10T1, possible values are 1 kg, 2 kg, and 5 kg. Readability can also be changed in the menu (function F0 di).

What is the battery life and how to charge it?

The built-in battery provides about 60 hours of operation with the backlight on. The charging time is about 14 hours. To charge, plug in the included mains adapter. During charging, the LED above the battery icon indicates the status: red (low voltage), yellow (almost empty), green (fully charged). Do not use the scale while charging.

How to attach the scale to the crane?

Make sure the crane is equipped with a safety latch (anti-drop device). Hook the top eye of the scale onto the hook of the crane, then close the safety latch. The eye must rest properly on the capstan. Check that the latch works correctly before any use.

What are the regular maintenance checks?

Maintenance must be carried out by trained personnel. Every 3 months, check: all dimensions (according to the diagram), wear of the hook and shackle, operation of the pivot joint and safety latch. Every 12 months, a thorough inspection of all load-bearing components is required. The results must be recorded in the provided checklists.

What to do if the remote control does not work?

Check if the red LED lights up when you press a key. If not, replace the battery (type 23A, 12 V). Also ensure the distance between the scale and remote does not exceed 20 m and that no obstacles block reception. If the problem persists, contact the manufacturer.

How to perform an adjustment (calibration)?

Turn off the scale, then turn it on again while holding the ZERO and d= 1/2/5 kg keys during the self-test. Enter the password (default 0000). Navigate to function F9 CL. Unload the scale, confirm, then hang the recommended adjustment weight (10 t, class M1) and confirm. The scale performs the adjustment and returns to weighing mode. Only use suitable adjustment weights.

USER MANUAL HFM 10T1 Kern

Operating instruction

Mode d'emploi

Logbuch

Regular maintenance and care

Journal de bord

Red digital scale measuring instrument with metal hook and digital display (no visible text or symbols)

Further language versions you will find online under www.kern-sohn.com/manuals

EN We hereby declare and assume sole responsibility for the declaration that the product complies with the directives hereinafter. The object of the declaration described below is in conformity with the relevant Union harmonisation legislation.

Typ | Type |

HFM 10T1

HFM 1T0.1

HFM 3T0.5

HFM 5T0.5

Seriennr. | Serial no. |

XXXXXXXXXXXX

CE KennzeichnungCE mark applied	EU-RichtlinieEU directive	NormenStandards
	2006/42/EC(MD)	EN 13155:2003+A2:2009
	2011/65/EU(RoHS)	EN 63000:2018
	2014/30/EU(EMC)	EN 55032:2015+A11:2020EN 55035:2017EN 61000-3-3:2013+A1:2019EN 61326-1:2013EN IEC 61000-3-2:2019
	2014/35/EU(LVD)	EN 61010-1:2010EN 62368-1:2014+A11:2017
	2014/53/EU(RED)	EN 300 220-2 V3.1.1EN 301 489-1 V2.1.1EN 55032:2015+A11:2020EN 55035:2017

Datum | Date |: 26.03.2021

Place of issue: Germany

Voraussetzung

graph TD
    A["Start"] --> B["Check the hook device"]
    B --> C["Adjustment to hook device"]
    C --> D["Adjustment to pulley mechanism"]
    D --> E["End"]

→ ZERO-Taste drücken.

Technical line drawing of a mechanical hook with a conical component and a hanging hook, showing no text or symbols.

HFM-BA-d-2215

10. Anhang

1. Technical Data ____ 3
   1.1 Dimensions 4
   1.2 Nameplate 5
   1.3 EC-Declaration of -Conformity 6
2. General Safety Instructions ____ 8
3. The crane scales at a glance 11
   3.1 Overview 11
   3.2 Display 12
   3.3 Keyboard 12
   3.3.1 Numeric entry 13
   3.4 Radio remote control 13
   3.5 Sticker 14
4. Commissioning 15
   4.1 Unpacking 15
   4.2 Original dimensions 15
   4.3 Rechargeable battery operation 16
   4.3.1 Standby mode 17
   4.4 Suspending the balance 18
5. Operation 19
   5.1 Safety instructions 19
   5.2 Loading the crane scales 20
   5.3 Turn on/off 23
   5.4 Setting balance to zero 23
   5.5 Taring 24
   5.6 Weighing 24
   5.7 Record weight value (freeze) 24
6. Menu 25
7. Adjustment 27
8. Error messages ____ 28
9. Cleaning, Repair, Maintenance and Disposal 29
   9.1 Cleaning and Disposal 29
   9.2 Regular maintenance and care 30
   9.3 Checklist „Regular maintenance“ 31
   9.4 Maintenance table 32
   9.5 Drawings of a hook, shackle and crane scale 33
   9.6 Inspection cycles 34
   9.7 Drawing with "h" dimension 35
10. Enclosure 36
    10.1 Checklist „Enhanced maintenance“ (General revision) 36
    10.2 List „spare parts and repair “ 37
11. Instant help 39

1. Technical Data

KERN	HFM 1T0.1	HFM 3T0.5	HFM 5T0.5	HFM 10T1
Readability (d)	0.1 kg	0.5 kg	0.5 kg	1 kg
Weighing range (max)	1 000 kg	3 000 kg	5 000 kg	10 000 kg
Taring range (subtractive)	1 000 kg	3 000 kg	5 000 kg	10 000 kg
Reproducibility	500 g	1 kg	2.5 kg	5 kg
Linearity	±1 kg	±2 kg	±5 kg	±10 kg
Recommended adjustment weight, not added (class)	1 t (M1)	3 t (M1)	5 t (M1)	10 t (M1)
Stabilization time	2 s
Precision	0.2 % of max.
Warm-up time	30 min
Unit	kg
Allowable ambient temperature	0...+40 °C
Relative humidity	0 to 80 %, non-condensing
Supply voltage	220V - 240V AC 50 Hz
Secondary voltage powerpack	9V, 800 mA
Rechargeable battery (standard equipment)	6 V, 10 AhService life – background illumination ON - 50 hLoading time 14 h
Display	Digit height 30 mm
Housing size W x D x H, (mm)	270 x 175 x 200		300 x 190 x 230
Housing material	Metal, lacquered
Material hook and shackle	Nickel plated steel
Net weight (kg)	16	18	23	35
Remote control (standard equipment)	Battery Size 23A (1 x 12V)W x D x H 48 x 16 x 95 mm

1.1 Dimensions

	A B	C D E	F G
	mm	mm	mm	mm	mm	mm	mm
HFM 1T0.1	270	175	200	610	540	68	40
HFM 3T0.5	270	175	200	610	540	74	40
HFM 5T0.5	300	190	230	730	650	74	55
HFM 10T1	300	190	230	840	750	92	60

1.2 Nameplate

1	KERN Logo
2	Model designation
3	Weighing range [Max]
4	Data for power supply
5	Company address
6	Readability [d]
7	Date of manufacture
8	CE mark
9	Disposal symbol
0	Serial number

1.3 EC-Declaration of -Conformity

KERN & Sohn GmbH

Ziegelei 1

72336 Balingen-Frommern

Germany

www.kern-sohn.com

+0049-[0]7433-9933-0

FAX +0049-[0]7433-9933-149

[e-mail]

EN We hereby declare and assume sole responsibility for the declaration that the product complies with the directives hereinafter. The object of the declaration described below is in conformity with the relevant Union harmonisation legislation.

Further language versions you will find online under:

www.kern-sohn.com/ce

2. General Safety Instructions

Duties of the owner-operator

Follow the national accident prevention regulations as well as the working, operating and safety regulations of the owner-operator.

• Observe all safety regulations of the crane manufacturer.
• The balance may only be used for the proposed purpose. Any type of use which is not specified in these operating instructions, will be considered as improper use. The customer is solely responsible for material damage and injury of persons resulting from an improper use, Messrs. KERN & Sohn will not be liable under any circumstance.
  Messrs. KERN & Sohn cannot be held liable, if the crane scales are modified or used improperly and if damage is resulting from such use.
• Carry out regular maintenance and care of the crane scales, the crane and the load suspension devices (see chapter 9).
• Log the test result and keep it in the logbook.

Organizational measures

• Only trained and instructed staff may operate the balance.
• Make sure that the operating instructions are kept nearby the operation site of the crane scales.
• Assembly, commissioning and maintenance should only be carried out by trained specialists.
• Use original spare parts only.
• All repair work must be carried out by trained specialists. Repairs and spare parts must be documented. (see list „spare parts and repair of safety-relevant parts“
• All maintenance must be documented (see checklist „Regular maintenance“ chap. 9.3).
• Load suspending components may only be exchanged as a complete spare parts set. The dimensions of the new components must be recorded (see checklist „Regular maintenance“ chapter 9.3).

Ambient conditions

• Never operate the crane scales in explosive environment. The serial version is not explosion protected.
• Operate the crane scales only under environmental conditions as specified in these operating instructions (especially in chapter 1 „Technical data“).
• Do not expose the crane scales to strong humidity. Non-permitted condensation (condensation of air humidity on the appliance) may occur if a cold appliance is taken to a considerably warmer environment. In this case, acclimatize the disconnected appliance for ca. 2 hours at room temperature.
• Do not operate the crane scales in corrosive environment.
• Protect the crane scales against high humidity, vapours and dust.
• Avoid extreme heat as well as temperature fluctuations e.g. caused by direct sun light..
• Major display deviations (incorrect weighing results) may be experienced should electromagnetic fields (e.g. due to mobile phones or radio equipment), static electricity accumulations or instable power supply occur. Change location or remove source of interference.

Proper use

The balance you purchased is intended to determine the weighing value of material to be weighed. It is intended to be used as a “non-automatic” balance, i.e. the material to be weighed is suspended on the crane hook only vertically, manually, carefully and without jerks. As soon as a stable weighing value is reached the weighing value can be read.

• Use the crane scales only for lifting and weighing of freely movable loads.
  ■ Danger of injury due to improper use. Not allowed are e.g.:

• Exceeding the allowed nominal load of crane, crane scales or any type of load attachment devices

• Conveying persons,
• Pulling loads over an inclined surface,
• Tearing-off, pulling or towing loads.

- Modifications or reconstructions of the crane scales or of the crane are not allowed.

Intended use of rotating load hooks

• The rotatable load hook has been provided for a simple and comfortable hooking of the weighed material.
• The rotating function of the load hook under load is out of function. The load on the crane scales must not be swiveled. Any turning movement must be done ba a rotatable crane hook.. A loaded crane scales generally must not be rotated. (static loading and unloading of a load).

Improper Use

Do not use balance for dynamic weighing. In the event that small quantities are removed or added to the material to be weighed, incorrect weighing results can be displayed due to the “stability compensation” in the balance. (Example: Slowly draining fluids from a container suspended on the balance.) Do not leave permanent load suspended on the balance. This may damage the measuring system as well as safety-relevant parts.

The balance may only be used according to the described conditions. Other areas of use must be released by KERN in writing.

Warranty

Warranty claims shall be voided in case

• Our conditions in the operation manual are ignored
  ■ The appliance is used outside the described use
  ■ The appliance is modified or opened
  ■ Mechanical damage and damage caused by media, liquids,
  ■ Natural wear and tear
  ■ The appliance is improperly set up or incorrectly electrically connected
  ■ The measuring system is overloaded

Safe working

• Do not stand underneath suspended loads!
  ■ Position the crane in a way that the load is lifted vertically.
• When working with the crane and crane scales wear personal safety equipment (helmet, safety shoes etc.).

Monitoring of Test Resources

In the framework of quality assurance the measuring-related properties of the balance and, if applicable, the testing weight, must be checked regularly. The responsible user must define a suitable interval as well as type and scope of this test. Information is available on KERN's home page (www.kern-sohn.com) with regard to the monitoring of balance test substances and the test weights required for this. In KERN's accredited DKD calibration laboratory test weights and balances may be calibrated (return to the national standard) fast and at moderate cost.

Testing upon acceptance

When receiving the appliance, please check packaging immediately, and the appliance itself when unpacking for possible visible damage.

Initial Commissioning

In order to obtain exact results with the electronic balances, your balance must have reached the operating temperature (see warming up time chap. 1).

During this warming up time the balance must be connected to the power supply (mains, accumulator or battery).

The accuracy of the balance depends on the local acceleration of gravity.

Strictly observe hints in chapter Adjustment.

Check the original dimensions, see chap. 4.2.

Shutdown and storage

Take off the crane scales from the crane and dismantle all load attachment devices from the crane scales.
- Do not store the crane scales at open air

3. The crane scales at a glance

The crane scales are a multi-purpose and cost-saving solution for overhead weighing applications such as e.g. recycling, metal processing, machine engineering, transport and logistics.

With the radio remote control, operation will be more comfortable yet.

3.1 Overview

Fig. 1: Front view of balance

1 Shackle 6 Antenna
2 Display 7 Keyboard,
3 Keyboard
4 Safety bracket
5 Hook, revolvable

Fig. 2: Radio remote control

see chapter 3.4

3.2 Display

LED The LED lights up, if
HOLD	the data-hold function is active
	the weight display is stable
a	the weight is in the area around the zero point
	when the battery is being recharged

3.3 Keyboard

Button	Description of function
ON/OFF	Turn on or off the balance
d=1/2/5 kg	Modification of readabilityHFM 1T0.1: 100g⇒200g⇒500gHFM 3T0.5: 500g⇒1 kg⇒2 kgHFM 5T0.5: 500g⇒1 kg⇒2 kgHFM 10T1: 1 kg⇒2 kg⇒5 kgScroll forward in menu
HOLD	Record weight value (freeze)Exit menu
a	TaringZeroingConfirm entry

3.3.1 Numeric entry

Button Function
d=1/2/5 kg	Increase flashing digit
HOLD Digit selection
a	Terminate input

3.4 Radio remote control

The balance can be operated by the radio remote control like by a keyboard. All functions (excepted ON/OFF) can be selected.

The red LED must light up when any button is pressed. If it does not light up, the batteries in the remote control must be exchanged.

Range on free surface (free of buildings) approx. 20 m.

	TARE	Taring
	ZERO	Zeroing
	←→	Modification of readability
	HOLD	Record weight value (freeze)

3.5 Sticker

⇒ Do not stand or go under suspended loads.
→ Do not use on building sites.
→ Suspended loads have to be observed constantly.

Do not exceed the nominal load of crane scales.

(Example)

⇒ The product meets the requirements of the German Equipment and Product Safety Act.

4. Commissioning

Attention: Always observe chapter 2 „General Safety Instructions“!

4.1 Unpacking

SAFETYINSTRUCTIONSfor protection against break	Once delivered and unpacked, crane scales will not be taken back.
	The crane scales have been sealed by Messrs. KERN.⇒ Shackles and hooks are sealed by Sella tape.⇒ The packaging is also sealed by adhesive tape.+ Broken seal obliges to purchase.Fig.: Seal
	Thanks for your comprehension.Your KERN Quality assurance team
Danger for the back!	The crane scales are compact and quite heavy.⇒ Remove the scales from packaging only with the help of a second person.⇒ Use a lifting device such as a crane or a forklift truck.⇒ Secure the scales that they cannot fall down when they are lifted.

→ Make sure that all parts are completely present.

• Crane scales
• Mains adapter
• Remote control
• Operating instructions (logbook)

Only use original packaging for returning.

4.2 Original dimensions

- Determine the dimensions prior to the first use and document them in the checklist. For that purpose enter the dimensions into the checklist „Regular maintenance” according to the drawings in chap. 9.5. For this purpose use suitable test equipment.

4.3 Rechargeable battery operation

	ATTENTION The rechargeable battery and the charging unit match to each other. Only use the delivered mains adapter. Do not use the crane scales during the loading process. The rechargeable battery can only be replaced by the same or by a type which has been recommended by the manufacturer. The rechargeable battery is not protected against all environmental conditions. If the rechargeable battery is exposed to certain environmental influence, the rechargeable battery may set on fire or explode. Persons can be severely injured or material damage may occur. Protect the rechargeable battery against fire and heat. Do not bring the rechargeable battery in contact with liquids, chemicals or salts. Do not expose the rechargeable battery to pressure or microwaves. The rechargeable battery and the charger may not be modified or manipulated under any circumstances. Do not use a defective, damaged or deformed rechargeable battery Do not connect or short-circuit the electrical contacts of the rechargeable battery with metallic objects. From a damaged rechargeable battery may escape liquids. If the liquid comes into contact with skin or eyes, the skin and the eyes may be irritated. Ensure the correct polarity when inserting or exchanging the rechargeable battery (see instructions in the rechargeable battery compartment) The rechargeable battery operation is overridden when a mains adapter is being connected. If weighing more than 48 hours with mains operation, the rechargeable batteries have to be removed! (Danger of overheating). If the rechargeable battery starts to smell, being hot, changing the colour or being deformed, it must be immediately unplugged from mains supply and from the balance if possible.

Loading the rechargeable battery:

Before the first use, the rechargeable battery should be charged by connecting it to the mains power cable for at least 24 hours. The operating time of the rechargeable battery is approx. 50 hours.

The capacity of the rechargeable battery will soon be exhausted, when the display begins to flicker. If „bat lo“ appears, the balance will remain operable for approx. 30 minutes more, then it switches off automatically. Connect the power cable as soon as possible to load the rechargeable battery.

During loading the LED display above 📋 informs you about the loading status of the rechargeable battery.

red: Voltage has dropped below prescribed minimum.

green: Rechargeable battery is completely charged

yellow: Capacity of rechargeable battery almost exhausted

When the crane scales are out of operation for a longer period, remove the rechargeable battery.

4.3.1 Standby mode

The crane scales change into the standby mode when any key is pressed or when for 5 minutes (factory setting) no weight change has been measured. Only one segment remains lighting. In order to finish the standby mode, press any key on the keyboard or on the remote control.

Switch-off time selectable after 0, 5, 10, 20, 30 minutes, see chap. „F6 sl“.

4.4 Suspending the balance

Condition

The crane needs a safety bracket (1) that the unloaded crane scales cannot fall down.

If the safety bracket is missing or damaged, please contact the crane manufacturer in order to receive a hook with this safety equipment.

+The hook scales can be used solely with a crane equipped with a swivel joint

Suspend the crane scales on the lower hook of a crane and close the safety bracket.

The crane scale's upper eyelet should rest in the saddle (2).

5. Operation

5.1 Safety instructions

	Risk of injury due to falling loads!
	⇒ Always work with particular care according to the general rules for crane operation.⇒ Check all parts (hook, eyelet, rings, rope slings, cables, chains etc.) for excessive wear or damage⇒ If faults can be seen on the safety bracket of the hook or if it is missing completely, the scales must not be used.⇒ Work only with appropriate speed.⇒ Always avoid vibrations and horizontal forces. Avoid any kind of shock, torsion and oscillating (e.g. caused by inclined suspending).⇒ Do not use the crane scales for transport of loads
	⇒ Do not stand or go under suspended loads.
	⇒ Do not use on building sites.
	⇒ Suspended loads have to be observed constantly.
(Example)	⇒ Do not exceed the nominal load of crane, crane scales or any kind of load attachment devices at the crane scales.⇒ For weighing dangerous goods (e.g molten masses, radioactive materials) the “ Dangerous Goods Regulations” are to be regarded!

5.2 Loading the crane scales

For good weighing results observe the following, illustrations see next page:

⇒ Only use load attachment devices which guarantee a one-spot suspension and where the scales can be suspended freely.
Do not use too large load attachment devices which do not guarantee any one-spot suspension.
⇒ Do not use multiple suspensions.
Do not pull or push the load or the loaded balance.
→ Do not pull the hook horizontally.

Loading the balance

1. Position the hook of the crane scales over the load.
2. Move downwards the crane scales until the load can be suspended on the hook of the balance. Reduce the speed when the respective height is going to be reached.
3. Suspend the load on the hook. Ensure that the safety bracket is closed. If the load is fixed by slings, ensure that the slings rest completely on the saddle of the balance hook.
4. Lift-off the load slowly.

When the load is fixed by slings, ensure that the load is well balanced on both sides and that the slings are correctly positioned

graph TD
    A["Start"] --> B["Check the hook"]
    B --> C["Adjust key to hook"]
    C --> D["Close-up of control switch"]
    D --> E["Adjust key to hook"]
    E --> F["End"]

Only use load attachment devices which guarantee a one-point suspension and where the scales can be suspended freely.

Do not use too large load attachment devices which cannot guarantee a one-point suspension.

graph TD
    A["Do not push or pull"] --> B["Do not pull the hook horizontally"]
    B --> C["Do not use multiple suspensions"]

5.3 Turn on/off

Start-up

⇒ Press the ON/OFF button on the balance keyboard. The display lights up and the balance carries out a selftest. The selftest is completed when the weight value 0 appears on the display.

Switch on only possible at the keyboard of the balance.

Switching Off

⇒ Press the ON/OFF button on the balance keyboard.

5.4 Setting balance to zero

In order to obtain optimal weighing results, reset to zero the balance before weighing.

Manual

→ Unload the balance
→ Press the ZERO button.

In the display appears 0 (kg) and the LED a lights up.

Automatic

In the menu the amount of the automatic zero point correction can be changed, see chapter 6 / Function „F1 az“.

5.5 Taring

→ Suspend preload.
Press the ZERO button. In the display appears 0 (kg) and the LED a lights up. The weight of the container is now internally saved.
→ Weigh the material, the net weight will be indicated.
⇒ After removing the preload weight appears as negative display.
To delete the tare value, remove load from crane scales and press the ZERO button.

5.6 Weighing

→ Load the crane scales.

The weight value will be displayed at once. After standstill control the LED lights up.

i Overload warning Overloading exceed

Overloading exceeding the stated maximum load (max) of the balance, minus a possibly existing tare load, must be strictly avoided. This could cause damage to the balance.

Exceeding the maximum load is indicated by the display „--ol-“. Unload balance or reduce preload.

5.7 Record weight value (freeze)

⇒ Press the HOLD button to „freeze“ or to record the current weight value. It remains displayed until it is deleted. The LED HOLD lights up

In order to delete the "frozen" or the recorded weight, press the HOLD button. The LED HOLD extinguishes.

6. Menu

Navigation in the menu:

Call function	Switch on the balance and during the selftest press the ZERO and the d=1/2/5 kg button at the same time. „P1---“is displayed.Enter password:orselect standard password „0000“ with HOLD number, increase the flashing number using d=1/2/5 kg orpersonal password, see function F8 ciConfirm with ZERO button.The first function „F0 di“ is displayed.
Select function	The d=1/2/5 kg button allows to select the individual functions one after the other.
Select setting	Confirm the selected function by the ZERO button. The current setting will be displayed.
Change settings	Use the d=1/2/5 kg button to switch over into the available settings.
Confirm setting	Press the ZERO button, the balance returns into the menu.
Exit menu / Return to weighing mode	Press the HOLD button.

Overview:

Function	Available settings		Description
F0 di Modification of readability	Low High*
	cap	d (low) d=1/2/5 kg			d (high) d=1/2/5 kg
	1 t	2kg	1kg	500g	500g	200g	100g
	3 t	10kg	5kg	2kg	2kg	1kg	500g
	5 t	10kg	5kg	2kg	2kg	1kg	500g
	10 t	20kg	10kg	5kg	5kg	2kg	1kg
F1 az Automatic zero point correction (zero tracking)	AZn 0 0.5 d AZn 1* 1 d AZn 2 2 d AZn 3 4 d
F2 bt	Not documented
F3 sp	Not documented
F4 ip	Internal A/D converter value
F5 ut Not documented
F6 sl Standby mode see chap. 4.3.1	SLP 0 SLP 1* SLP 2 SLP 3 SLP 4		Standby mode switched off Standby mode after 5 minutes Standby mode after 10 minutes Standby mode after 20 minutes Standby mode after 30 minutes
F7 gv	Not documented
F8 ci Password entry	In „P1- - - “ display increase the flashing number using d=1/2/5 kg, select number using HOLD. Confirm entry by ZERO button.
F9 CL	Adjustment, see chapter 7

* = default setting

7. Adjustment

→ Switch-off balance and attach a carrying help if necessary.
Switch-on balance with attached carrying help and during the selftest press the ZERO and the d = 1/2/5 kg button at the same time. „P1 --- “is displayed.

→ Use the number keys to enter password:

or select standard password „0000“ with HOLD number, increase the flashing number using d=1/2/5 kg

or personal password, see function F8 ci

→ Confirm with ZERO button, the first function „F0 di“ is displayed.

⇒ Press the d=1/2/5 kg button repeatedly until „F9 CAL“ will be displayed.

→ Press the ZERO button, „UnLD“ will be displayed.
→ Unload the balance and wait until the LED ≡ lights up.

⇒ Press the ZERO button, the currently set adjustment weight is displayed.
In order to change, select the number to be changed using the HOLD button and set the desired value using the button, the respective active digit flashes.
→ Confirm by the ZERO button, „Load“ will be displayed.
Attach the adjustment weight and wait until the LED lights up.

→ Press the ZERO button.
⇒ After successful adjustment the balance carries out a selftest, then it automatically returns to weighing mode.

An adjusting error or incorrect adjusting weight will be indicated by the error message; repeat adjustment procedure

8. Error messages

Error message	Description	Possible causes
--ol-	Maximum load exceeded	⇒ Reduce load⇒ Check whether the balance has been damaged
Err 5	Keyboard error	⇒ Improper operation of the balance
Err 6	Value outside the A/D changer range	⇒ Weighing plate not installed⇒ Damaged weighing cell⇒ Damaged electronics
Ba lo	Capacity of rechargeable battery exhausted	⇒ Recharge battery

Should other error messages occur, switch balance off and then on again. If the error message remains inform manufacturer.

9. Cleaning, Repair, Maintenance and Disposal

Prior to any maintenance, cleaning and repair work disconnect the device from the operating voltage.

Risk of injury and risk of material damage!The crane scales are part of a hoisting device!For a safe operation please observe the following:⇒ Employ trained specialists for the regular maintenance, according to chapter 9.2 „Regular maintenance and care“ and „Checklist Regular maintenance“⇒ Have the parts exchanged only by trained specialized staff.⇒ If there arose discrepancies with the checklist, the balance must not more be put into operation.⇒ Do not repair the crane scales by yourself. Repairs may only be carried out by trained specialised personnel.

9.1 Cleaning and Disposal

Damage on the crane scales!⇒ Do not use any industrial solutions or chemicals

Clean the keyboard and the display with a soft cloth soaked in mild window cleaning agent.
Disposal of packaging and appliance must be carried out by operator according to valid national or regional law of the location where the appliance is used.

9.2 Regular maintenance and care

▲ Regular checks and maintenance must be carried out within the periods defined in chap. 9.6 „Check intervals“
▲ The regular 3-month maintenance may only be carried out by trained specialists with competent knowledge of working with crane scales. Thereby adhere to the national regulations for prevention of accidents as well as to the working, operation and safety regulations of the owner-operator.
▲ To check the dimensions only use suitable test equipment / feeler gauges.
▲ The regular 12-month maintenance must only be carried out by trained specialized staff.
▲ Enter the results of the regular and enhanced maintenance into the respective checklists.
▲ Enter the replaced spare parts into the list „Spare parts and repairs“.

Regular maintenance:

Initial start-up, every 3 months

Enter and check all dimensions, see checklist „Regular maintenance”.Check the scales and the eyelet for wear and tear, such as e.g. plastic deformation, mechanical damage (unevenness), notches, striation, cracks, corrosion, thread damage and torsions.Visual and functional check of the articulated joint.Check the application of the safety bracket on the hook, moreover check for fault and correct functionFor balances of big construction size: Check that the split pin and the nut on the shackle are not looseIf a dimension exceeds the admitted deviation from the original dimension or if other discrepancies have been found, the balance must be repaired by trained specialized staff. Never do repair it by yourself!Take balance out of operation immediately!All repair work and spare parts must be documented by trained specialists.See list „Spare parts and repairs“

Every 12 months

All load suspending components must be checked by trained specialists and documented in the checklist „Enhanced maintenance“.

Hint

During the revision watch out for wear and tear according to the following drawings (see chap. 9.5)

9.3 Checklist „Regular maintenance“

i

Additional information on the maintenance works can be found in the table below (see chapter 9.4) and in figures in chapter 9.5.

Shackle

Hook

a

b

c

Wear(see grey fields)

Cotter pinand nut

d

e

f

g

h

Angle

Wear(see grey fields)

Detent

Articulated joint

Date

Inspector

Max. acceptable deviation

5%

0%

5%

No deformations or cracks

Well fixed

10%

5%

5%

5%

±1 mm

10°

No deformations or cracks

Correct operation

Check function

Dimensions before first use

3 months

6 months

9 months

12 months

„Maintenance work must be carried out by trained specialists.“

9.4 Maintenance table

Part	Drawing	Component	Inspection	Limits
Hook		Detent	Inspection concerning operation and damage	No damage is acceptable, operation must be ensured.
		Articulated joint	Check function	Correct operation
		Eye and hook	Inspection concerning dimensions and damage	As per Table 9.3
Shackle		Locking bolt	If it is not loose	It must not be loose.
		Shackle	Inspection concerning dimensions and damage	As per Table 9.3
		Cotter pin + nut	Inspection concerning damage and positioning	Correct positioning as per Table 9.3
Crane scale		Screw connections	Loose	It must not be loose.
		Crevice between the hook and the enclosure	Dimension check	As per Table 9.3

9.5 Drawings of a hook, shackle and crane scale

9.6 Inspection cycles

Inspection	Every day	Every 7 days	Every 3 months	Every 12 months
Presence of all crane scale parts	☒
Visual inspection for damage	☒
Visual inspection and operation inspection of the hook detent	☒
Visual inspection and checking the function of the articulated joint	☒
Inspection of the shackle cotter pin and nut	☒
Impurities ☒
Marking inspection (legible nameplate)		☒
Inspection of all dimensions as per the checklist 9.3	☒
Enhanced maintenance (see chap. 10.1) by trained specialists	☒

9.7 Drawing with "h" dimension

Technical line drawing of a mechanical hook with a conical component and a hanging hook, showing no text or symbols.

HFM-BA-e-2215

10. Enclosure

10.1 Checklist „Enhanced maintenance“ (General revision)

The enhanced maintenance must be carried out by trained specialists.

Crane scales		Model ...... Serial no. ......
Interval Hooks Shackle			Screwed connections	Date Name Signature
12 months

10.2 List „spare parts and repair “

Repairs must be carried out and documented by trained specialists.

Crane scales	Model ...... Serial no. ......
Part	Action	Date	Name	Signature

11. Instant help

Possible causes of errors:

In case of an error in the program process, briefly turn off the balance and disconnect from power supply. The weighing process must then be restarted from the beginning.

Fault Possible cause

The displayed weight does not glow.

The balance cannot be switched on

The display does not react to load change

Loading display does not glow during loading

The displayed weight is permanently changing

The weighing result is obviously incorrect

The desired weighing unit cannot be called by UNIT key.

Error message „-ol-“

The menu settings cannot be changed.

The remote control does not work

- The balance is not switched on.

- Load/replace the rechargeable battery

- On/Off button defective

- On/Off button not correctly actuated

- Load cell defective

- Load cell cable defective

• Power supply unit defective

• Power supply unit not correctly connected

• Vibrations on the hook

- Suspended load does not stand still

- Load cell defective

- The balance has not been reset to zero before weighing

- The adjustment does not match with the installation place or has been misadjusted.

- Wrong weighing unit selected

- Unit was not activated beforehand.

• Maximum load of the balance exceeded

- The menu is locked Remove the menu lock.

- Batteries empty, insert new batteries

- Too much distance between balance and remote control

- Obstacles block the reception

KERN HFM

Version 1.5 2022-02

Albert Sauter

KERN & Sohn GmbH

Signature:

Signature:

Signatur:

Directeur Exécutif

Managing director

Geschäftsführer

graph TD
    A["Start"] --> B["Check the hook"]
    B --> C["Adjust key to hook"]
    C --> D["Close-up of control panel"]
    D --> E["Adjust key to hook"]
    E --> F["End"]

Diagram of a mechanical clamp device with no visible text or symbols, showing hand and hook components (no readable text or symbols)

Technical line drawing of a mechanical lifting device with hooks and adjustment knobs (no text or symbols)

HFM-BA-f-2215

Technical line drawing of a mechanical hook with a conical component and a hanging hook, showing no text or symbols.

HFM-BA-f-2215

10. Annexe

- Charger/changer la pile rechargeable