2/20 Rev. A 57-02694
17
SERVICE INSTRUCTION
DANGER
Risk of fire or explosion. Flammable refrigerant used. To be repaired only by trained service
personnel. Do not puncture refrigerant tubing.
DANGER
Risk of fire or explosion. Flammable refrigerant used. Do not use mechanical devices to
defrost refrigerator. Do not puncture refrigerant tubing
CAUTION
Risk of fire or explosion. Flammable refrigerant used. Consult instruction manual/repair
manual/owner’s guide before attempting to install or service this product. All safety
precautions must be followed.
CAUTION
Risk of fire or explosion due to puncture of refrigerant tubing; follow handling instructions
carefully. Flammable refrigerant used.
1. High head pressure and high back pressure:
A. Condenser coil clogged or restricted
B. Condenser fan motor defective.
C. Air discharge in rear of cabinet restricted.
2. Low back pressure and low head pressure:
A. Restriction in system.
B. Refrigerant undercharged.
C. Leak in system
3. Pressure normal – cabinet warm:
A. Coil blocked with frost (see #4).
B. Refrigerant undercharged.
C. Control set too warm.
4. Cabinet not cycling – coil blocked with frost:
A. Defective temperature controller.
B. Refrigerant overcharged.
C. Location too hot.
D. Condenser clogged.
E. Condenser fan motor defective.
F. Defrost heater not operating.
5. Copressor starts and runs – but cycles on overload:
A. Low voltage
B. Relay defective.
C. Overload defective.
D. High head pressure (see #1).
Summary of Contents for MBGFP-HG
Page 2: ...2 20 Rev A 57 02694 2 ...
Page 18: ...2 20 Rev A 57 02694 ...
Page 22: ...2 20 Rev A 57 02694 16 ...
Page 23: ...2 20 Rev A 57 02694 17 DATE MODEL S PART NO 1 2 DOOR FREEZER 57 02692 2 13 20 MERCHANDISER ...
Page 24: ...2 20 Rev A 57 02694 18 DATE MODEL S PART NO 3 DOOR FREEZER 57 02693 2 13 20 MERCHANDISER ...
