Seifert SlimLine Pro KG 8506

Questions and Answers

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david66Aug 10, 2025
What to do if my Seifert SlimLine Pro KG 8506 Accessories unit doesn't cool?
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  Robert NelsonAug 10, 2025
  If your Seifert Accessories unit isn't cooling, first verify the power supply is properly connected. If the power is on, check if the enclosure temperature is below the set temperature (St1) and verify the 'St1' parameter values. Also, make sure the door switch is working correctly. If the controller is faulty, consider replacing it. An incorrect phase sequence inside the power supply connector can also cause this issue; try changing the phases. If none of these steps resolve the issue, it could be a compressor motor electrical failure, in which case you should have the compressor replaced by a qualified technician. A failed capacitor for the compressor or a faulty external fan can also be the cause, so consider replacing these components as well.
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Nicholas MyersAug 15, 2025
Why is the enclosure temperature too high in my Seifert SlimLine Pro KG 8506 Accessories unit?
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  Rachel McdanielAug 15, 2025
  If the enclosure temperature of your Seifert Accessories unit is too high, it could be due to several reasons. The cooling unit might be undersized, requiring a unit with higher capacity. Another possibility is that the thermal compressor protector has been triggered; verify if the ambient temperature is too high and clean the condenser. Refrigerant leakage could also be the cause, in which case you should contact your dealer or service center.
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Marc BlackburnAug 19, 2025
How to prevent excessive condensate in Seifert SlimLine Pro KG 8506 Accessories?
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  Angela LivingstonAug 20, 2025
  Excessive condensate in your Seifert Accessories unit can occur if ambient air is entering the enclosure. Ensure the door is closed properly and consider adding a door switch connected to the controller. If the enclosure's IP protection class is below IP54, seal all openings. Also, check for any damaged or misplaced sealing strips and repair them as needed.
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Ryan RodriguezAug 25, 2025
Why is my Seifert SlimLine Pro KG 8506 unit not cooling?
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  Carol HoffmanAug 26, 2025
  Your Seifert Accessories unit might not be cooling because the power is not connected. Verify the power supply. Also, the enclosure temperature might be below the set temperature. Verify the 'St1' parameter values. The door switch contact could be open, so check the door switch. The controller may not be working, in which case, replace it. The sequence of the phases inside the power supply connector could be incorrect, so change the phases. There could be a compressor motor electrical failure, have the compressor replaced by a qualified service technician. Another reason could be a failed capacitor for the compressor, replace the capacitor. Finally, the external fan might need replacement.
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Gabrielle GrantAug 30, 2025
What to do if the enclosure temperature of my Seifert Accessories is too high?
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  Timothy ClarkAug 30, 2025
  If the enclosure temperature of your Seifert Accessories is too high, it could be due to several reasons. The cooling unit might be undersized, meaning the enclosure needs a cooling unit with a higher capacity. Another possibility is that the thermal compressor protector has been triggered. In this case, verify if the ambient temperature is too high and clean the condenser. Finally, there could be refrigerant leakage, in which case you should contact your dealer or service center.
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Jordan EdwardsSep 4, 2025
How to fix excessive condensate in my Seifert SlimLine Pro KG 8506?
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  Jacob DunlapSep 4, 2025
  Excessive condensate in your Seifert Accessories can occur if ambient air gets into the enclosure. Ensure the door is closed and consider adding a door switch connected to the controller. Another cause could be that the enclosure IP protection class is below IP54; seal all openings of the enclosure to resolve this. Also, check for a damaged or misplaced sealing strip and repair it accordingly.

This document describes the Seifert 850600562 cooling unit, an industrial accessory designed for dissipating heat from control cabinets and enclosures to protect temperature-sensitive components in industrial environments. It is not intended for household use.

Function Description:

The cooling unit operates on a refrigeration circuit comprising a compressor, evaporator, condenser, and expansion device. This hermetically sealed circuit uses R134a refrigerant, which is chlorine-free with an Ozone Destruction Potential (ODP) of 0 and a Global Warming Potential (GWP) of 1430. The compressor pressurizes the refrigerant, increasing its temperature and pushing it through the condenser, where it is cooled by ambient air and transitions from gas to liquid. The liquid then passes through a capillary pipe, reducing its pressure before reaching the evaporator. In the evaporator, the refrigerant absorbs heat from the enclosure, changing back to a gas, completing the cycle as it's drawn back into the compressor. The unit features two separate air circuits, ensuring that clean cabinet air does not mix with potentially dirty or polluted ambient air. It can function in extreme ambient conditions, such as dusty and oily air, within an operating temperature range of +10°C (50°F) to +60°C (140°F). Some units can be ordered with an additional electrical cabinet heater.

Important Technical Specifications:

Order Number: 850600S62
Cooling Capacity:
- 95F/95F: 2290 BTU
- 95F/122F: 1485 BTU
Compressor: Rotary piston
Refrigerant / GWP: R134a / 1430
Refrigerant Charge: 117 g / 3.46 oz.
High / Low Pressure: 28 / 6 bar (406 / 88 psi)
Operating Temperature Range: 50°F - 140°F
Air Volume Flow (System / Unimpeded):
- Ambient air circuit: 117 / 240 cfm
- Enclosure circuit: 72 / 106 cfm
Mounting: Wall mounted / recessed
Housing Material: Stainless steel AISI 304 (V2A)
Dimensions (H x W x D): 23.7 x 9.9 x 5.4 inch
Weight: 30.86 lbs.
Voltage / Frequency: 230 V ~ 50/60 Hz
Current (95F95F): 1.9 A @ 50Hz, 1.8 A @ 60Hz
Starting Current: 6 A
Max. Current: 2.5 A @ 50 Hz, 2.7 A @ 60 Hz
Nominal Power (95F95F): 410 W @ 50 Hz, 430 W @ 60 Hz
Max. Power: 600 W
Fuse: 15 A (T)
Connection: 5 pole terminal for signals, 4 pole terminal for power
Ingress Protection: IP 56 / Type 12, 3, 3R, 4, 4X
Approvals: CE, cURus, cULus

Usage Features:

The unit is controlled via a front keypad and display. The display shows temperature in the range of -50°C to +150°C (-58°F to +302°F), with a resolution of tenths between -19.9°C and +99.9°C (-3.8°F to +211.8°F). During programming, it shows parameter codes and values. Icons indicate various operational states such as compressor active, alarm active, heater active, ambient blower active, heating mode, cooling mode, and test mode.

Setting Cooling Set Point (St1): Press "SET", adjust value with ▲ or ▼, then press "SET" again to save. Default is +35°C / +95°F.
Setting Heating Set Point (St2): (For units with internal heater) Press "SET" twice, adjust value with ▲ or ▼, then press "SET" again to save. Default is +5°C / +41°F.
Setting Temperature Units, Low/High Temperature Alarms: Press "PRG" for 5 seconds to access the parameter list. Use ▲ or ▼ to select parameters like C18 (temperature unit, 0=°C, 1=°F), P25 (low temperature alarm threshold, default -10°C / +14°F), P26 (high temperature alarm threshold, default +55°C / +131°F), and c68 (door contact logic, 0=ON if closed, 1=ON if open). Press "SET" to display current value, adjust with ▲ or ▼, then press "SET" to temporarily save. Repeat for other parameters, then press "PRG" for 5 seconds to permanently save.
Test Function: Different key combinations initiate 4-minute tests: "SET+▲" tests Compressor and Ambient Blower relays; "SET+▼" tests Alarms and Heater relays.
Alarm Relay Operation: Provides both normally closed (NC) and normally open (NO) alarm contacts. Under normal conditions, NC is closed, NO is open. An alarm condition (or open door contact) causes NC to open and NO to close. System power failure also triggers an alarm.
Door Switch: The unit can be switched ON/OFF via a door contact switch. Terminals are bridged by default; remove the bridge to connect a door contact switch. The contact must be closed when the cabinet door is closed. The logic of the door switch can be changed using parameter c68.
Condensate Management: The unit features integrated condensate evaporation. If excessive condensate forms, it drains into an overflow trough. Regular seal checks and installing a door contact switch (order no. 3100001) are recommended to prevent condensation.
Installation: The power supply rating must match the unit's rating plate. Air inlets and outlets must be unobstructed. For UL compliance, ensure the air outlet does not blow directly at an operator; a barrier or duct may be needed. The enclosure air suction hole should be at the highest possible point. When mounting on a door, ensure the door can support the weight. Disconnect power before any work inside the enclosure. If recessed, the controller bracket can be adjusted.

Maintenance Features:

Troubleshooting: A failure table provides codes (e.g., E01 for internal temperature sensor failure, E04 for high temperature alarm), descriptions, and solutions (e.g., check probe connections, clean air filters, contact service partner).
Cleaning: Only specialized personnel should maintain and clean the unit. Disconnect from electrical supply during maintenance. Do not use aggressive cleaning materials on the controller panel; use neutral detergents and water.
Filter Installation/Replacement: Follow specific steps for installing or replacing filters. Filters should be cleaned or replaced at regular intervals, especially in dusty or oily environments. Washable aluminum filters (AC-8503/06-BF-1) and metal filters (AC-8503/06-BZ-1) are available.
Disposal: All spare parts and associated materials must be disposed of according to environmental laws.
Transport & Storage:
- Inspect the carton box for transport damage upon delivery.
- Store in locations with temperatures between -40°F and 158°F, and relative humidity (at 77°F) max. 95%.
- Always store the cooling unit in its installation position.
- For returning the unit, use original packing or a suitable packing case, strapped to a pallet. Maintain at least 30 mm space between the unit and external packing. Ship in the same position as mounted, protected by shock-resistant padding.
Taking into Operation: To ensure proper lubrication, allow the unit to stand for at least 30 minutes after transport before connecting to mains power. The unit/system must be protected with an MCB Type D or K. Upon connection, the internal fan starts. If the enclosure temperature exceeds the set point, the compressor and external air fan will activate. The cooling cycle stops when the enclosure air reaches the set temperature minus hysteresis or after the minimum On-time. Hysteresis is 3K, minimum ON-time is 4 minutes, and minimum OFF-time is 3 minutes (7 minutes for units >1kW). The internal enclosure temperature setpoint is pre-set at 95°F.