TROUBLE
COMMON CAUSE
REMEDY
COMPRESSOR STARTS
Low line voltage.
Bring up voltage.
& RUNS BUT CYCLES
ON PROTECTOR.
Additional current passing through
Check for added fan motors and pumps
protector.
connected to wrong side of protector.
Suction pressure too high.
Check compressor for proper application.
Discharge pressure too high.
Check ventilation, restrictions and overcharge.
Protector weak.
Check current - replace protector if
defective.
Running capacitor defective.
Check capacitance. Replace if defective.
Stator partially shorted or grounded.
Check resistances; check for ground. Replace
if defective.
Inadequate motor cooling.
Correct cooling system.
Compressor tight.
Check oil level. Check for binding condition.
Unbalanced line (three-phase).
Check voltage of each phase. If not equal,
correct condition of unbalance.
Discharge valve leaking or broken.
Replace valve plate.
STARTING CAPACITORS
Short cycling.
Reduce number of starts to 20 or less per
BURNT OUT.
hour.
Prolonged operation on starting
Reduce starting load (install crankcase
winding.
pressure limit valve), increase voltage if
low – replace relay if defective.
Relay contacts sticking.
Clean contacts or replace relay.
Improper relay or incorrect relay setting.
Replace relay.
Improper capacitor.
Check parts list for proper capacitor rating:
mfd. and voltage.
Capacitor terminals shorted by water.
Install capacitors so terminals won’t be wet.
RUNNING CAPACITORS
Excessive line voltage.
Reduce line voltage to not over 10% above
BURNT OUT.
rating of motor.
High line voltage and light load.
Reduce voltage if over 10% excessive.
Capacitor voltage rating too low.
Install capacitors with recommended voltage
rating
Capacitor terminals shorted by water
Install capacitors so terminals won’t be wet.
RELAYS BURNT OUT.
Low line voltage.
Increase voltage to not less than 10% above
motor rating.
Excessive line voltage.
Reduce voltage to not more than 10% above
motor rating.
Incorrect running capacitor.
Replace with correct capacitor.
Short cycling.
Reduce number of starts per hour.
Relay vibrating.
Mount relay rigidly.
Incorrect relay.
Use relay recommended for specific motor
compressor.
TROUBLESHOOTING
97
Summary of Contents for BT30RF- EXPR
Page 15: ...SECTION II...
Page 26: ...ELECTRICAL BOX WIRING DIAGRAM 00 0056 00 WIRING DIAGRAM 25...
Page 27: ...ELECTRICAL BOX WIRING DIAGRAM 00 0057 00 26 WIRING DIAGRAM...
Page 28: ...ELECTRICAL BOX WIRING DIAGRAM 00 0064 00 WIRING DIAGRAM 27...
Page 49: ...INSTRUCTIONS SOLID DOOR REMOVAL INSTALLATION ADJUSTMENT 48 MAINTENANCE REPAIR...
Page 63: ...CASTER INSTALLATION INSTRUCTIONS 62 MAINTENANCE REPAIR...
Page 69: ...ELECTRICAL REFRIGERATION INFORMATION BT30RF EXPR Explosion Proof Refrigerator Freezer...
Page 79: ...ELECTRICAL REFRIGERATION INFORMATION ST260RI ST260RIR...
Page 81: ...MODULE 1 ANALOGIC PARAMETERS MODULE 1 PARAMETERS 83...
Page 83: ...MODULE 1 DAYTRONICS PARAMETERS MODULE 1 PARAMETERS 85...
Page 102: ...EVAPORATOR FAN SHROUD ASSEMBLY 104 EVAPORATOR FAN SHROUD ILLUSTRATION...
Page 105: ...EVAPORATOR FAN AREA BT30RSFMS BT50RSFMS EVAPORATOR FAN AREA ILLUSTRATION 107...
