SCE -AC1870B460V User Manual
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SCE -AC1870B460V User Manual

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Table of Content SCE-AC1870B460V
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Version No. 1-8 - 10.01.2022
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Summary of Contents for SCE SCE-AC1870B460V

  • Page 1: Table Of Contents

    Table of Content SCE-AC1870B460V 1. User manual ..........................2. Legal regulations ......................... 3. Safety instructions ........................4. Settings ............................5. Functional principle ........................6. Technical data ..........................7. Mounting ............................8. Mounting Principle ........................9. Electrical Connection ........................10. Controller ..........................

  • 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. The unit 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: Functional Principle

    5. Functional principle The cooling unit for enclosures works on the basis of a refrigeration circuit consisting of four main components: compressor (1), evaporator (2), condenser (3) and expansion device (4). The circuit is hermetically sealed and R134a refrigerant circulates inside it (R134a is chlorine free and has an Ozone Destruction Potential [ODP] of 0 and a Global Warming Potential [GWP] of 1430).

  • Page 6: Technical Data

    6. Technical data Order Number SCE-AC1870B460V Cooling capacity L35L35 1945 BTU 445W @ 50 Hz Cooling capacity L35L50 490 W @ 60 Hz Enclosure heater 400 W Compressor type Reciprocating compressor Refrigerant / GWP R134a / 1430 Refrigerant Charge 150 g / 5.3 oz.

  • Page 7: Mounting

    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: Mounting Principle

    8. Mounting Principle Do not use within the first 15 minutes after installation! Use only the supplied mounting hardware Tighten Screws to 4.5 Nm Ensure the mounting surface does not warp after assembly and reinforce it if necessary The bracket helps with the mounting of the cooling unit during installation Screws Toothed washers Flat washers...

  • Page 9: Electrical Connection

    9. Electrical Connection Door Switch The unit can be switched on and of via a door contact switch. When delivered the door contact terminals are bridged on the female connector. To connect the door contact switch remove the bridge and connect door contact switch.

  • Page 10: Controller

    10. Controller The display shows the temperature in the range of -50°C to +150°C (-58°F to +302°F). The temperature is displayed with resolution of tenths between -19.9°C and +99.9°C (-3.8°F to +211.8°F). During programming, it shows the codes and values of the parameters. The display also shows icons according to occurring events. Display icons Icon Function Description...
  • Page 11 Setting heating set point, St2 (only for units supplied with internal heater): 1. Press “SET” twice slowly and display should show St2 and then the pre-set value of St2. (default: +5°C / +41°F) 2. Reach the desired value by using ▲ or ▼. 3.
  • Page 12 Alarm Relay Operation Both normally closed (NC) and normally open (NO) alarm contacts are provided. Under normal conditions, the NC contact is closed and the NO contact is open. When an alarm condition is present, the NC contact will open and the NO contact will close.

  • Page 13: Wiring Diagram

    11. Wiring Diagram Alarm (NO) P1 Alarm (COM) P2 Alarm (NC) P3 Door Contact T1 Door Contact T2 Version No. 1-8 - 10.01.2022 Doc. No. 99570521201SG 13 / 16...

  • Page 14: Taking Into Operation

    12. 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 15: Trouble Shooting

    13. Trouble Shooting Failure Condition Cause Solution Internal fan does not work Power not connected. Verify power supply Enclosure temperature is below Verify values of parameter setting temperature (St) "St" Internal fan works, external fan Unit and compressor don't work Door switch contact is open Verify door switch doesn't...

  • Page 16: Transport & Storage

    1 x Female connector with shorted wired positions for door contact Saginaw Control and Engineering 95 Midland Road Saginaw, MI 48638 Phone: 989 / 799-6871 Fax: 989 / 799-4524 sce@saginawcontrol.com Version No. 1-8 - 10.01.2022 Doc. No. 99570521201SG 16 / 16...

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