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Table of Content 20250481
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Doc. No. 9920250481
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Summary of Contents for Seifert KG 2025-48V
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Page 1: Table Of Contents
Table of Content 20250481 1. User manual ..........................2. Legal regulations ......................... 3. Safety instructions ........................4. Settings ............................5. Functional principle ........................6. Technical data ..........................7. Mounting ............................8. Electrical Connection ......................... 9. Controller Layout Description ....................10. Wiring Diagram ........................ -
Page 2: User Manual
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. -
Page 3: Safety Instructions
Disregarding the instruction manual Operating error Inappropriate work on or with the unit 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. -
Page 4: Settings
4. Settings 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. -
Page 5: Technical Data
6. Technical data Order Number 20250481 Cooling capacity L35L35 480 W Cooling capacity L35L50 275 W Compressor type Speed Control rotary compressor Refrigerant / GWP R134a / 1430 Refrigerant Charge 82 g / 2.9 oz 30 / 6 bar High / low Pressure 440 / 88 psig Operating Temperature Range +10°C - +55°C... -
Page 6: Mounting
7. Mounting Unpacking unit: Please follow the below steps to unpack the unit. STEP 1: Stand the cooling unit upright with the pre-cut packaging opening facing up. STEP 2: Pull off the packaging opening. STEP 3: Hang the transport loop of the unit in the transport hook and lift it slightly. STEP 4: Pull off... - Page 7 Mounting: The power supply rating on unit rating plate must comply with mains rating. Always disconnect the power supply before opening the unit. The heat load to be dissipated from enclosure should not exceed specific cooling output of the unit at any condition.
- Page 8 Cold air outlet duct: When using a cold air outlet duct please follow the steps below. Filter installation: If you install / replace a filter please follow the steps below. Version No. 1-1 - 10.01.2022 Doc. No. 9920250481 8 / 20...
- Page 9 Condensate management: High humidity and low temperatures inside the enclosure can lead to condensation on the evaporator. Condensate that flows back into the enclosure can damage sensitive control electronics. The integrated condensate evaporation of the cooling unit releases the condensate to the environment. If too much condensation forms, the condensation is drained out of the cooling unit from the front through the lower gill grilles.
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Page 10: Electrical Connection
8. Electrical Connection High electric voltage present. Installation, maintenance, cleaning and any other work must be carried out by qualified personnel only. The personnel must ensure that for the duration of this work the unit and the cabinet are disconnected from the electrical supply and protected against unauthorised/accidental reconnection. - Page 11 KEYPAD TB Test button DC LED Door Contact (ON when door closed) CF LED Controller Function (blinks when controller is running) Fault warning connection The fault warning is connected via terminals P1, P2 & P3 on the connection terminal block. The temp. adjustment range is between 25°C (left-hand stop) and 55°C (right-hand stop).
- Page 12 Connect the door contact switch to terminals T1 & T2. The contact must be closed when the cabinet door is closed. SCCR Refer to UL508A Supplement SB and Seifert Systems’ document Short Circuit Current Rating (SCCR) on methods how to modify the available short circuit current within a circuit in the panel.
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Page 13: Controller Layout Description
9. Controller Layout Description Optional sensor Optional powered sensor Simple display port Internal temperature sensor Alarm output UART UART RS485 RS485 Compressor data Door contact IFO1 Internal fan out 1 IFO2 Internal fan out 2 AFO1 Ambient fan out 1 AFO2 Ambient fan out 2 Fuse... -
Page 14: Wiring Diagram
10. Wiring Diagram High Temperature TVR1 Ambient (optional) TVR2 Pressure pipe (optional) TVR3 Control temp (optional) Alarm output Compressor data Door switch Fuse 16 A(T) DC Power Internal fan Internal fan Ambient fan Ambient fan Compressor Compressor controller Comp. thermal switch (optional) WARNING: Unit is not protected against reversed polarity on DC source Wire Colour Blue... - Page 15 Version No. 1-1 - 10.01.2022 Doc. No. 9920250481 15 / 20...
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Page 16: Taking Into Operation
11. Taking into Operation Attention! The unit can be damaged by lack of lubricant. To ensure that the compressor is adequately lubricated the oil, which has been displaced during transport, must be allowed to flow back into it. The unit must therefore be allowed to stand for at least 30 min. -
Page 17: Trouble Shooting
12. Trouble Shooting Failure Reason Troubleshooting No power supply Check the electrical connection Unit Wait until the set point is reached. The unit will then Cabinet temperature is lower doesn't start automatically. If the set point of the cabinet than set point start temperature is too high, reduce it accordingly. -
Page 18: Maintenance & Cleaning
13. Maintenance & Cleaning Always switch power supply off before starting any maintenance on the unit. Wait for 5 minutes for electrical components to discharge. The cooling unit is generally maintenance free and can be operated without filters in most environments. If the ambient air is extremely dusty, we recommend installing filter mats (see accessories). -
Page 19: Transport & Storage
14. Transport & Storage Malfunction due to transport damage On delivery the carton box containing the unit must be examined for signs of transport damage. Any transport damage to the carton box could indicate that the unit itself has been damaged in transit which in the worst case could mean that the unit will not function. -
Page 20: Parts Supplied / Spare Parts / Accessories
1 x Connector Seifert Systems GmbH Seifert Systems Ltd. Seifert Systems AG Seifert Systems GmbH Seifert Systems Ltd. Seifert Systems Inc. Seifert Systems Pty Ltd. Albert-Einstein-Str. 3 HF09/10 Wilerstrasse 16 Bärnthal 1 Rep. Office 75 Circuit Drive 105 Lewis Road...
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