Seifert KG 2025-24V User manual

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Table of Content KG 2025-24V
1. User manual 2 ...................................................................................................................
2. Legal regulations 2 ...........................................................................................................
3. Safety instructions 3 ........................................................................................................
4. Technical information 4 ...................................................................................................
5. Functional principle 4 ......................................................................................................
6. Technical data 5 ................................................................................................................
8. Mounting 6 .........................................................................................................................
9. Electrical connection 7 .....................................................................................................
10. Controller Layout Description 11 .................................................................................
11. Wiring diagram 12 ..........................................................................................................
12. Taking into operation 14 ...............................................................................................
13. Trouble shooting 15 ......................................................................................................
14. Maintenance & Cleaning 15 ..........................................................................................
15. Maintenance 15 ...............................................................................................................
16. Transport & Storage 16 .................................................................................................
17. Parts supplied 16 ............................................................................................................

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1. User manual
This instruction manual contains information and instructions to enable the user to work safely,
correctly and economically on the unit. Understanding and adhering to the manual can help one:
Avoid any dangers.
●
Reduce repair costs and stoppages.
●
Extend and improve the reliability and working life of the unit.
●
PLEASE ENSURE TO USE THE RIGHT VERSION OF THE INSTRUCTION MANUAL SUITABLE FOR
YOUR UNIT.
Conditions of use
󰾬The unit is to be used exclusively for the dissipation of heat from control cabinets and enclosures in
order to protect temperature sensitive components in an industrial environment. To meet the
conditions of use, all the information and instructions in the instruction manual must be adhered to.
General danger
Indicates compulsory safety regulations which are not
covered by a specific pictogram such as one of the following.
High electric voltage
Indicates electric shock danger.
Important safety instruction
Indicates instructions for safe maintenance and operation of
the unit.
Attention
Indicates possible burns from hot components.
Attention
Indicates possible damage to the unit.
Instruction
Indicates possible danger to the environment.
2. Legal regulations
Liability
The information, data and instructions contained in this instruction manual are current at the time of
going to press. We reserve the right to make technical changes to the unit in the course of its
development. Therefore, no claims can be accepted for previously delivered units based on the
information, diagrams or descriptions contained in this manual. No liability can be accepted for
damage and production caused by:

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Disregarding the instruction manual
●
Operating error
●
Inappropriate work on or with the unit
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The use of non-specified spare parts and accessories
●
Unauthorised modifications or changes to the unit by the user or his personnel
●
The supplier is only liable for errors and omissions as outlined in the guarantee conditions contained in
the main contractual agreement. Claims for damages on any grounds are excluded.
3. Safety instructions
Upon delivery the unit is already meeting current technical standards therefore it can be safely taken
into operation. Only trained specialists are allowed to work on the unit. Unauthorised personnel must
be prohibited from working on the unit. Operating personnel must inform their superiors immediately if
any malfunction of the unit becomes apparent.
Please note that before starting to work on or with the unit, a procedure must be carried out inside the
cabinet on which the unit is to be mounted.
Before commencing work inside the cabinet, the control cabinet manufacturer's instruction must be
read with regards to:
Safety instructions.
●
Instructions on taking the cabinet out of operation.
●
Instructions on the prevention of unauthorised cabinet reconnection.
●
The electric equipment meets the valid safety regulations. One can find dangerous voltages (above 50
V AC or above 100 V DC)
Behind the control cabinet doors.
●
On the power supply in the unit housing.
●
The unit has to be fused according to the type plate and the wiring diagram, and must be protected
externally from overloading and electrical faults via suitable protective devices such as ground fault
protection breakers.
Danger through incorrect work on the unit
The unit can only be installed and maintained by technical competent and
qualified personnel, using only supplied material according to the supplied
instructions.
󰾬
Danger from electrical voltage
Only specialised personnel are allowed to maintain and clean the unit. The
personnel must ensure that for the duration of the maintenance and cleaning, the
unit is disconnected from the electrical supply.
Attention
Damage to the unit through the use of inappropriate cleaning materials. Please do
not use aggressive cleaning material.
Instruction
Damage to the environment through unauthorised disposal. All spare parts and
associated material must be disposed according to the environmental laws.

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4. Technical information
The cooling unit is intended to be used as a complementary accessory to larger industrial equipment,
and is used where heat needs to be dissipated from electrical control cabinets or similar enclosures in
order to protect heat sensitive components. It is not intended for household use. The unit has two
completely separate air circuits which ensure that the clean cabinet air does not come into contact
with the ambient air which may well be dirty or polluted. The cooling unit can dissipate large quantities
of heat from electrical enclosures into the ambient air and at the same time reduce the internal
temperature to below that of the ambient air. The unit works without problems in extreme ambient
conditions (e.g. dusty and oily air). The operating temperature range is between +20°C and +55°C.
Units can be ordered with an additional electrical cabinet heater. For the cooling capacities and
evironmental ratings please refer to the type plate data.
5. Functional principle
The unit functions on the principle of the compression refrigerator. The main components are:
refrigerant compressor, condenser, choke and evaporator. these four components of the refrigerant
plant are connected with each other by pipes to form a hermetically sealed system in which the
refrigerant (R134a) circulates. R134a is chlorine free and has an Ozone Destruction Potential [ODP] of
0 and a Global Warning Potential [GWP] of 1430.
1. Air intake, cabinet side 7. Radial fan, ambient side
2. Radial fan, cabinet side 8. Condenser
3. Evaporator 9. Air outlet, ambient side
4. Air outlet, cabinet side 10. Filter dryer
5. Compressor 11. Expansion valve
6. Air intake, ambient side

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6. Technical data
Order Number 20250241
Cooling capacity L35L35 120 - 480 W
Cooling capacity L35L50 max. 275 W
Compressor Speed Control rotary compressor
Refrigerant / GWP R134a / 1430
Refrigerant charge 82 g / 3 oz
High / low pressure 30 / 6 bar
440 / 88 psig
Temperature range +10°C - +55°C
Air volume flow Ambient air circuit: 315 m³/h
Cabinet air circuit: 190 m³/h
Mounting Internal / External
Housing Material Mild steel, powder coated
Dimension HxWxD 310 x 475 x 98 mm
Weight 9.2 kg
Cut out dimensions 142.5 x 440 mm
Voltage / Frequency 24 V DC
Current L35L35 max. 11.5 A
Max. current 12.4 A
Nominal power L35L35 max. 280 W
Fuse 16 A (T)
Connection Connection terminal block
IP class EN 60529 External circuit: IP 22
Internal circuit: IP 54
Approvals CE, RoHS