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Midea MGB-F130W/RN1 - User Manual

Midea MGB-F130W/RN1
174 pages
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Air-cooled modular chiller unit 50Hz MCAC-ATSM-2011-12
2
Content
1 General information ................................................................................ 3
2. Features ................................................................................................... 5
3. Specification ........................................................................................... 9
4 Dimension .............................................................................................. 21
5 Refrigeration system drawing .............................................................. 33
6. Piping diagram ...................................................................................... 36
7 Wiring diagrams..................................................................................... 42
8 Electric characteristics ......................................................................... 56
9 Capacity tables ...................................................................................... 58
10 Exploded view ...................................................................................... 74
11 Troubleshooting ................................................................................... 96
12 Installation .......................................................................................... 108
13 Commissioning .................................................................................. 132
14 Maintenance ....................................................................................... 135
15 Control system .................................................................................. 137
Appendix ................................................................................................. 174

Questions and Answers

  • B
    bdavisAug 20, 2025
    How to fix over high air discharge pressure in Midea MGB-F130W/RN1 Chiller (Cooling operation)?
    • A
      Andrew RossAug 20, 2025
      High air discharge pressure during cooling can stem from several issues. It could be due to air or non-condensing gas in the system, requiring you to discharge the gas and re-vacuum if needed. Dirty condenser fins or obstructions can also cause this, so clean the fins. Inspect the condenser fan for errors and ensure sufficient chilling air volume. Also, check if the ambient temperature is too high. Finally, if the refrigerant charging volume is excessive, discharge the extra refrigerant. If the air suction pressure is excessive high, refer to the section addressing that specific issue.
  • J
    Joshua DukeAug 22, 2025
    What to do if my Midea Chiller compressor stops because of motor Overload?
    • E
      Elizabeth HaydenAug 22, 2025
      If the compressor stops due to motor overload, the issue might be high air expelling and suction pressure (refer to those sections), voltage problems (ensure voltage isn't 20V above or below rated), a motor short circuit (check motor resistor connections), or an overload assembly error (replace the assembly).
  • J
    Jennifer SanchezAug 25, 2025
    What causes a Midea MGB-F130W/RN1 compressor to stop due to freeze-proof protection (Cooling operation)?
    • M
      Mr. Derek SmithAug 25, 2025
      The compressor might stop due to freeze-proof protection because of insufficient chilling water flow (check/repair the pump or flow control), gas in the water loop (discharge the air), or a thermal resistor error (replace it if confirmed).
  • C
    cwileyAug 27, 2025
    What causes over low air suction pressure in Midea MGB-F130W/RN1 Chiller (Cooling operation)?
    • K
      kristen54Aug 27, 2025
      Low air suction pressure can occur due to several reasons: insufficient water flow (adjust flow based on temperature difference), low inlet chilled-water temperature (check installation), refrigerant leaks or insufficient refrigerant (find and repair leaks or recharge), or scaling in the evaporator (descale).
  • J
    Jeffrey FloydAug 28, 2025
    Why is the air suction pressure over high in my Midea MGB-F130W/RN1 (Cooling operation)?
    • C
      Chad SmithAug 28, 2025
      High air suction pressure in cooling mode can result from overcharged refrigerant (discharge excess) or high inlet chilled-water temperature (check water pipeline insulation).
  • K
    Karen AndersonAug 30, 2025
    Why is the air suction pressure over high in my Midea Chiller (Heating operation)?
    • N
      Nathaniel JohnsonAug 30, 2025
      Excessive air suction pressure during heating can be due to overheated air at the air heat exchanger (check ambient temperature) or overcharging of refrigerant (discharge the excess).
  • L
    latoyaruizAug 31, 2025
    What causes a Midea MGB-F130W/RN1 compressor to stop due to Hi-pressure protection?
    • S
      Sarah WrightSep 1, 2025
      If the compressor stops because of high-pressure protection, it could be due to over high air expelling pressure (refer to that section) or a faulty high-pressure switch (replace if defective).
  • J
    jonathanhernandezSep 2, 2025
    How to fix over high air discharge pressure in Midea MGB-F130W/RN1 Chiller (Heating operation)?
    • S
      Sara JohnsonSep 2, 2025
      High air discharge pressure during heating can be caused by insufficient water flow (adjust based on temperature difference), air or non-condensing gas in the system (discharge gas and re-vacuum if needed), scaling in the heat exchanger (descale), or high chilling water inlet temperature (check water temperature). If the air suction pressure is excessive high, refer to the section addressing that specific issue.
  • K
    Katie RichardsonSep 4, 2025
    What causes a Midea MGB-F130W/RN1 Chiller compressor to stop because of Lo-pressure protection?
    • C
      Christopher BoydSep 4, 2025
      If the compressor stops due to low-pressure protection, it could be a blocked filter in front or rear of the expanding valve (replace the filter), a faulty low-voltage switch (replace it), or excessive low air suction pressure (refer to that section).
  • M
    Ms. Kylie MarshSep 6, 2025
    How to fix over low air discharge pressure in Midea Chiller (Cooling operation)?
    • M
      Melissa CruzSep 6, 2025
      Low air discharge pressure during cooling operation might be caused by a low surrounding temperature (measure the temperature) or a refrigerant leak or insufficient refrigerant (find the leak and recharge). If the suction pressure is low, refer to the “low suction pressure” section.

Midea MGB-F130W/RN1 Specifications

General IconGeneral
Cooling Capacity130 kW
RefrigerantR410A
Power Supply380-415V/3Ph/50Hz
Noise Level75 dB(A)
TypeChiller
Power Consumption45 kW

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