S-LS-35 - Measuring equipment Stamos - Free user manual and instructions
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USER MANUAL S-LS-35 Stamos
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Diagram showing three stages of a mechanical device: disassembly, assembly, and final assembly (no text or symbols present)This User Manual has been translated using machine translation. We have made every effort to ensure the translation is accurate, but please note that automated translations are not perfect and are not meant to replace human translators. The official version of the User Manual is in English. Any differences between the translated version and the original English are not legally binding. If you have any questions about the accuracy of the translation, please refer to the English version, which is the official reference. More language versions are available upon request via info@expondo.com.
Technical data
| Parameter description | Parameter value | ||
| Product name Laboratory power supply | |||
| Model | S-LS-33 | S-LS-34 S-LS-35 | |
| Rated voltage [V~] / Frequency [Hz] | 230/50 | 230/50 | 230/50 |
| Maximum power input [W] | 125 | 205 | 405 |
| DC voltage adjustment range [V] | 0-30 0-30 | 0-30 | |
| Current adjustment range [A] | 0-3 0-5 0-10 | ||
| Ripples | 10mV | ||
| Protections | OVP, OCP, OTP, built-in current limitation to protect against overload | ||
| Fuse | F5AL250V | ||
| Ambient temperature [°C] / Relative humidity [%] during use | 0-40/<75 | ||
| Line regulation | CV≤0.05%+1mVCC≤0.05%+10mA | ||
| Load regulation | CV≤0.1%+5mVCC≤0.1%+10mA | ||
| Dimensions [mm] 260x125x160 | |||
| Weight [kg] 2 | |||
/20mArms
1. General description
The user manual is designed to assist in the safe and trouble-free use of the device. The product is designed and manufactured in accordance with strict technical guidelines, using state-of-the-art technologies and components. Additionally, it is produced in compliance with the most stringent quality standards.
DO NOT USE THE DEVICE UNLESS YOU HAVE THOROUGHLY READ AND UNDERSTOOD THIS USER MANUAL.
To increase the product life of the device and to ensure trouble-free operation, use it in accordance with this user manual and regularly perform maintenance tasks. The technical data and specifications in this user manual are up to date. The manufacturer reserves the right to make changes associated with quality improvement. The device is designed to reduce noise emission risks to a minimum, taking into account technological progress and noise reduction opportunities.
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![]() | The product satisfies the relevant safety standards. |
![]() | Read instructions before use. |
![]() | The product must be recycled. |
![]() | WARNING! or CAUTION! or REMEMBER! Applicable to the given situation.(general warning sign) |
![]() | ATTENTION! Electric shock warning! |

PLEASE NOTE! Drawings in this manual are for illustration purposes only and in some details may differ from the actual product.
2. Usage safety

ATTENTION! Read all safety warnings and all instructions. Failure to follow the warnings and instructions may result in electric shock, fire and/or serious injury or even death.
The terms "device" or "product" are used in the warnings and instructions to refer to
Do not use in very humid environments or in the direct vicinity of water tanks.
Prevent the device from getting wet. Risk of electric shock!
Do not cover the ventilation openings!
2.1. Electrical safety
a) The plug must fit the socket. Do not modify the plug in any way. Using original plugs and matching sockets reduces the risk of electric shock.
b) Avoid touching earthed elements such as pipes, heaters, boilers and refrigerators. There is an increased risk of electric shock if the earthed device is exposed to rain, comes into direct contact with a wet surface or is operating in a damp environment. Water getting into the device increases the risk of damage to the device and of electric shock.
c) Do not touch the device with wet or damp hands.
d) Use the cable only for its designated use. Never use it to carry the device or to pull the plug out of a socket. Keep the cable away from heat sources, oil, sharp edges or moving parts. Damaged or tangled cables increase the risk of electric shock.
e) If using the device in a damp environment cannot be avoided, a residual current device (RCD) should be applied. The use of an RCD reduces the risk of electric shock.
f) Please make sure that the device is properly earthed.
g) Do not use the device if the power cord is damaged or shows obvious signs of wear. A damaged power cord should be replaced by a qualified electrician or the manufacturer's service centre.
h) When connecting the device, remember to take precautions against static electricity.
2.2. Safety in the workplace
a) Make sure the workplace is clean and well lit. A messy or poorly lit workplace may lead to accidents. Try to think ahead, observe what is going on and use common sense when working with the device.
b) Do not use the device in a potentially explosive environment, for example in the presence of flammable liquids, gases or dust. The device generates sparks which may ignite dust or fumes.
c) If you discover damage or irregular operation, immediately switch the device off and report it to a supervisor without delay.
d) If there are any doubts as to the correct operation of the device, contact the manufacturer's support service.
e) Only the manufacturer's service point may repair the device. Do not attempt any repairs independently!
f) In case of fire, use a powder or carbon dioxide (CO2) fire extinguisher (one intended for use on live electrical devices) to put it out.
g) Children or unauthorised persons are forbidden to enter a work station. (A distraction may result in loss of control over the device).
h) Regularly inspect the condition of the safety labels. If the labels are illegible, they must be replaced.
i) Please keep this manual available for future reference. If this device is passed on to a third party, the manual must be passed on with it.

Remember! When using the device, protect children and other bystanders.
2.3. Personal safety
a) Do not use the device when tired, ill or under the influence of alcohol, narcotics or medication which can significantly impair the ability to operate the device.
b) The device is not designed to be handled by persons (including children) with limited mental and sensory functions or persons lacking relevant experience and/or knowledge unless they are supervised by a person responsible for their safety or they have received instruction on how to operate the device.
c) When working with the device, use common sense and stay alert. Temporary loss of concentration while using the device may lead to serious injuries.
d) To prevent the device from accidentally switching on, make sure the switch is on the OFF position before connecting to a power source.
e) The device is not a toy. Children must be supervised to ensure that they do not play with the device.
2.4. Safe device use
a) Do not use the device if the ON/OFF switch does not function properly (does not switch the device on and off). Devices which cannot be switched on and off using the ON/OFF switch are hazardous, should not be operated and must be repaired.
b) Disconnect the device from the power supply before commencement of adjustment, cleaning and maintenance. Such a preventive measure reduces the risk of accidental activation.
c) When not in use, store in a safe place, away from children and people not familiar with the device who have not read the user manual. The device may pose a hazard in the hands of inexperienced users.
d) Keep the device in perfect technical condition.
e) Keep the device out of the reach of children.
f) Device repair or maintenance should be carried out by qualified persons, only using original spare parts. This will ensure safe use.
g) To ensure the operational integrity of the device, do not remove factory-fitted guards and do not loosen any screws.
h) Do not move, adjust or rotate the device in the course of work.
i) Do not leave this appliance unattended while it is in use.
j) Clean the device regularly to prevent stubborn grime from accumulating.
k) The device is not a toy. Cleaning and maintenance may not be carried out by children without supervision by an adult person.
I) Do not place heavy objects on the device housing.
m) Avoid impacts or incorrect handling to prevent damage to the device.
n) Some parts of this appliance can get very hot. To avoid injury, be careful when touching these surfaces.
o) Do not use the power adapter under the full load for a long period of time; it may cause damage to the device.
p) The output voltage of the power supply should not exceed the input voltage of the device being powered. Excessively high voltage may damage the powered device.
q) Before each change of the power adapter operation mode, first disconnect the connected external load wires.
r) Do not switch the device on and off too often, as this may shorten its lifespan. Each time the power is turned on; there is a 2-3 second transient preparation time. After the power is turned off, the transient preparation is 1-2 seconds.
s) The device is intended for indoor use.

△ATTENTION! Despite the safe design of the device and its protective features, and despite the use of additional elements protecting the operator, there is still a slight risk of accident or injury when using the device. Stay alert and use common sense when using the device.
3. Use guidelines
The device is designed to supply external devices with direct current of a specific voltage.
The user is liable for any damage resulting from unintended use of the device.
3.1. Device description

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1 2 3 4 5 6 7 8 9 10 11 12EN

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13 14 15- Output current value display
- Coarse current value adjustment knob
- Exact current value adjustment knob
- LED: current intensity stabilization mode
- On/Off button
- Output voltage value display
- Exact voltage value adjustment knob
- Coarse voltage value adjustment knob
- LED: voltage stabilization mode status
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Pole (-)
-
Grounding
- Pole (+)
- Fan
- Power socket
- Fuse socket
3.2. Preparing for use
APPLIANCE LOCATION
The temperature of environment must not be higher than 40^ C and the relative humidity should be less than 75%. Ensure good ventilation in the room in which the device is being used. There should be at least 10 cm distance between each side of the device and the wall or other objects. Keep the device away from hot surfaces. Operate the device on an even, stable, clean, fire-proof and dry surface and out of the reach of children and persons with mental disabilities. Position the device such that you always have access to the power plug. The power cord connected to the appliance must be properly grounded and correspond to the technical details on the product label!
3.3. Device use
Operation
- Place the device on a stable surface and connect the power cable to a power source in accordance with the power supply name plate.
- Study the power parameters of the device when connected to the power supply.
- Turn the device on by pressing the On/Off (5) button.
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Depending on the needs, the voltage or current limit should be set as follows: a) Setting the voltage value limit:
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Turn the current adjustment knobs (2) and (3) clockwise to the maximum.
- Set the preferred value using the voltage adjustment knobs (7) and (9).
- Switch off the device pressing the On/Off button (5).
b) Setting the current limit:
- Set the voltage value between 3 ÷ 5V using knobs (7) and (9).
- Turn the current adjustment knobs (2) and (3) to a minimum.
- Switch the appliance off by pressing the On/Off button (5).
- Connect the positive (12) and negative (10) poles using the test cable.
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- Switch on the device by pressing the On/Off button (5).
- Use the current adjustment knobs (2) and (3) to set the preferred value.
- Turn the voltage control knobs (7) and (9) to the maximum.
- Switch off the device pressing the On/Off button (5).
- Disconnect the pole connection cable.
Please note: do not short circuit the poles for too long, perform the operation as quickly as possible. When there is a short in the power supply, you will hear a slight noise, which is normal.
- When the parameters have been set, connect the external load to the appropriate poles (+) and (-).
- Switch the device on using the On/Off button (5).
- The device automatically switches between CC and CV modes depending on the load. For example, for a set current limit of 10A, if the external load is supplied with current less than the current value which has been set, then the power supply will always be in CV mode. If, on the other hand, it is supplied with a current higher than 10A, the charge will automatically switch to CC mode.
- The device has thermal protection. Should the protection become active, disconnect the device from the power supply, let it cool down and remove the cause of the protection having been tripped. Then, the device can be restarted.
- The device has overload protection (OCP) and overvoltage protection (OVP). Should the protection become active, disconnect the external load and verify that its power supply parameters correspond to the charger output parameters.
- When you have finished work, switch off the device, disconnect the external load and disconnect the device from power supply.
3.4. Cleaning and maintenance
a) Unplug the mains plug before each cleaning, adjustment or replacement of accessories, or if the device is not being used.
b) Use only non-corrosive cleaners to clean the surface.
c) After cleaning the device, all parts should be dried completely before using it again.
d) Store the unit in a dry, cool place, free from moisture and direct exposure to sunlight.
e) Never spray the device with water.
EN
f) Do not allow water to get inside the device through vents in the housing of the device.
g) Clean the vents with a brush and compressed air.
h) The device must be regularly inspected to check its technical efficiency and spot any damage.
i) Check the power cord for insulation damage, signs of burnout and other damage.
j) Check if the terminal screws and housing screws are not loose.
k) Use a soft cloth for cleaning.
I) To ensure fire protection, replace the fuse only with the specified type and rating.
m) To avoid electric shock, the power cord protective grounding conductor must be connected to the ground, do not remove covers.
n) Service maintenance should be provided by qualified personnel only.
Fuse replacement
PLEASE NOTE! The fuse should be replaced by a specialist.
1) Disconnect the device from power supply.
2) Disconnect the power cord and remove the fuse holder.

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Technical illustration of a mechanical component being inserted into a housing, showing internal structure and assembly (no text or symbols)3) Replace the fuse, making sure that the parameters are the same.
4) Reinstall the fuse socket.

PLEASE NOTE To avoid damage to the fuse socket, do not use excessive force
when removing and installing the fuse socket.

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Technical line drawing showing three stages of a mechanical switch device (no text or symbols present)natural_image
Technical line drawing showing a disassembled mechanical component being inserted into a housing, with no text or symbols present.natural_image
Technical line drawing showing a screwdriver inserting into a plastic housing, then adding a separate component (no text or symbols present)natural_image
Technical illustration of a mechanical switch mechanism showing disassembly and assembly (no text or symbols)natural_image
Diagram showing a screwdriver interacting with an internal component, before and after disassembly (no text or symbols present)- Place the device on a stable surface and connect the power cable to a power source in accordance with the power supply name plate.
- Study the power parameters of the device when connected to the power supply.
- Turn the device on by pressing the On/Off (5) button.
- Depending on the needs, the voltage or current limit should be set as follows:
Betjening
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Technical line drawing showing a mechanical component being inserted into a housing, with no visible text or symbols.For the disposal of the device please consider and act according to the national and local rules and regulations.
CONTACT
expondo Polska sp. z o.o. sp. k.




