Cornelius MJ31-4 PC No COOLING. Tripping, Overload, Anything on TOP, Refrigeration System

Troubleshooting Guide

Problem	Probable Cause	Remedy
COMPRESSOR RUNS BUT	Condenser fan not running.	Check that the condenser fan is
NO COOLING. TRIPPING		running. If the fan is binding or
OVERLOAD.		turning slowly, an overload condition
(Compressor shell is hot to		will occur.
touch).
	Inadequate air flow through	Air flow is top front in, exhaust out
	the dispenser.	the rear. NEVER PLACE
		ANYTHING ON TOP OF THE
		DISPENSER. This will block the
		airflow over heating the compressor
		and causing it to trip the overload.
	Blocked condenser fins.	Remove the rear bonnet and check
		the condenser fins. If unit is run in a
		dusty environment, condenser fins
		can become clogged, stopping the air
		flow.
		Brush out and clean with vacuum.
	Ambient air over 100°F 38°C.	If the dispenser is working in an
		environment over 100° ambient or is
		drawing in discharged air, during a
		heavy period, the unit may trip the
		overload.
	Defective overload.	Overload works on shell temperature
		and amperage draw and can be
		defective. Replace as needed.
	Defective compressor.	Refrigeration technician will verify if
		the compressor is defective and needs
		to be replaced.
UNIT IS DISPENSING	Insufficient water level in the	See the Start-up and Operation
CONCENTRATE ONLY	water bath.	Section of this manual. Be sure the
REFRIGERATION SYSTEM		water bath is filled to fill line.
HAS BEEN RUNNING FOR
EXTENDED PERIOD	Agitator motor not operating.	Check the agitator motor located on
WITHOUT SHUTTING OFF		the refrigeration deck. Be sure it is
FROZEN WATER COIL.		plugged in and receiving power.
		Check that the impeller is not
		obstructed. Replace if needed.
	Improperly located ice bank	Melt the ice bank and check the
	control sensor.	location of the sensing bulb. Be sure
		it is all the way down to the bottom
		of the tube.

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