Bally Refrigerated Boxes Refrigerators/Freezers/Warmers manual Troubleshooting And Servicing Guide

TROUBLESHOOTING AND SERVICING GUIDE

PROBLEM

PROBABLE CAUSE

CORRECTION

Condensing unit will	1.LINE DISCONNECTED, SWITCH OPEN.	1.CLOSE START OR DISCONNECT
not start - no hum.		SWITCH.
	2.FUSE REMOVED OR BLOWN.	2.REPLACE FUSE.
		3.DETERMINE REASON AND
	3.OVERLOAD PROTECTOR BLOWN.
		CORRECT/REPLACE
	4.CONTROL "OFF" DUE TO COLD LOCATION.	4.RELOCATE CONTROL.
	5.CONTROL STUCK IN OPEN POSITION.	5.REPAIR OR REPLACE CONTROL.
	6.WIRING IMPROPER OR LOOSE.
		6.CHECK WIRING AGAINST DIAGRAM.
Condensing unit will	1.IMPROPERLY WIRED.	1.CHECK WIRING AGAINST DIAGRAM.
not start - hums but	2.LOW VOLTAGE TO UNIT.	2.DETERMINE REASON AND CORRECT.
trips on overload	3.STARTING CAPACITOR DEFECTIVE.	3.DETERMINE REASON AND REPLACE.
protector.	4.RELAY FAILING TO CLOSE.	4.DETERMINE REASON AND REPLACE.
	5.COMPRESSOR MOTOR HAS A SHORTED OR	5.REPLACE COMPRESSOR.
	OPEN WINDING.	6.REPLACE COMPRESSOR.
	6.INTERNAL MECHANICAL TROUBLE IN
	COMPRESSOR.	7. CLEAR CONDENSER & ALLOW
	7. INSUFFICIENT AIR SUPPLY
		COMPRESSOR TO COOL DOWN
Condensing unit starts	1.ADDITIONAL CURRENT PASSING THROUGH	1.CHECK WIRE DIAGRAM.CHECK FOR
and runs, but short	OVERLOAD PROTECTOR.	ADDED COMPONENTS CONNECTED TO
cycles on over-load		WRONG SIDE OF OVERLOAD
protector.		PROTECTOR.
	2.LOW VOLTAGE TO UNIT.	2.DETERMINE REASON AND CORRECT.
	3.OVERLOAD PROTECTOR DEFECTIVE.	3.CHECK CURRENT,REPLACE
		PROTECTOR.
	4.RUN CAPACITOR DEFECTIVE.	4.DETERMINE REASON AND REPLACE.
	5.EXCESSIVE DISCHARGE PRESSURE.	5.CHECK VENTILATION,RESTRICTIONS IN
	6.EXCESSIVE SUCTION PRESSURE.	COOLING MEDIUM OR REFRIG. SYSTEM.
		6.CHECK FOR MISAPPLICATION.
	7.INSUFFICIENT AIR SUPPLY	7.CLEAR CONDENSER & ALLOW
		COMPRESSOR TO COOL DOWN
Condensing unit starts,	1.IMPROPERLY WIRED.	1.CHECK WIRING AGAINST DIAGRAM.
but fails to switch off of	2.LOW VOLTAGE TO UNIT.	2.DETERMINE REASON AND CORRECT.
"start" winding.	3.RELAY FAILING TO OPEN.	3.DETERMINE REASON AND REPLACE.
	4.RUN CAPACITOR DEFECTIVE.	4.DETERMINE REASON AND REPLACE.
	5.EXCESSIVELY HIGH DISCHARGE PRESSURE.	5.CHECK DISCHARGE SHUT-OFF VALVE,
	6.COMPRESSOR MOTOR HAS A SHORTED OR	POSSIBLE OVERCHARGE.
	OPEN WINDING.	6.REPLACE COMPRESSOR.
	7.INTERNAL MECHANICAL TROUBLE IN	7.REPLACE COMPRESSOR.
	COMPRESSOR.

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