Alto-Shaam Mobile Refrigerated Cart Co Rrective Maintenance Trouble S Hooting Guide, Symptoms

CO RRECTIVE MAINTENANCE TROUBLE S HOOTING GUIDE

SYMPTOMS		POSSIBLE FAILURE
Unit does not cool.	∙	Bad connection at supply
		cord.
	∙ Ill-fitting gasket.
	∙	Low refrigerant.
Unit does not operate.	∙	Control failure.
	∙	Incorrect voltage.
	∙ Bad connection at supply
	∙	cord.
		Failed compressor.
Unit runs continuously.	∙	Low on Refrigera	nt.
	∙	Control failure.
	∙ Restricted air flow or
	∙	dirty condenser coil.
		Bad condenser fan
		motor.
	∙	Compressor failure.
	∙ Ineffective door seal.
	∙ Air circulation in storage
		restricted.
Low head pressure.	∙	Defective compressor.
	∙	Low refrigerant.
	∙ Ambient temperature too
		low.
High head pressure.	∙	Blocked or dirty
		condenser.
	∙ Ambient temperature too
		high.
	∙	System contains air.
	∙	Refrigerant overcharge.
Short cycling.	∙	Mal-adjusted control.

SOLUTION

∙Check supply cord at outlet.

∙Tighten strike on door latch.

∙Check system for leaks and recharge.

∙Adjust control or replace.

∙Supply correct voltage.

∙Replace or repair.

∙Replace.

∙Leak-check system and recharge.

∙Adjust control or replace.

∙Rectify air flow problem and clean condenser.

∙Check and replace if necessary.

∙Replace.

∙Adjust door strike.

∙Redistribute food and even air flow.

∙Replace.

∙Leak check system and recharge.

∙Redistribute food for even air flow.

∙Clean and remove any obstructions.

∙Improve room temperature.

∙Evacuate, change the filter dryer and recharge.

∙Reduce refrigerant in the system.

∙Adjust control.

This chart is provided for the assistance of qualified technicians only and is not intended for use by untrained or unauthorized service personnel.

1000-MR2 (50HZ) OPERATION MANUAL #02/13 6/14