Atlas Air Compressor manual Problem Solving

Instruction book

6 PROBLEM SOLVING

Before carrying out any maintenance or repair:

1.Stop the compressor, switch off the voltage and open the isolating switch.

2.Close the air outlet valve (2-Figs. 1.2/1.4 or 3-Figs. 1.5/1.6) and open the manual drain valve: valve (1-Fig. 1.9) on Multi or the valve underneath the air receiver, if provided.

1	Compressor does not start
a	Loose connection
a	Have electrical connections checked
b	Receiver pressure too high
b	Compressor will start when the net pressure drops to the minimum pressure

2	Safety valve blows
a	Safety valve opens too soon
a	Replace valve
3	Compressor capacity or pressure below normal
a	Air consumption exceeds capacity of compressor
a	Check equipment connected
b	Choked air filter
b	Remove and check filter. Replace if necessary
c	Safety valve leaking
c	Replace valve
d	Drive belt(s) slipping
d	Check condition of belt(s). Correct or replace as required
4	Compressor module overheating / compressor shut down by its air temperature switch
a	Insufficient compressor cooling
a	Improve ventilation of compressor room.
b	Cooling fan out of order
b	Check and correct
	On SF Full-Feature also:
5	Pressure dewpoint too high
a	Shortage of refrigerant
a	Have circuit repaired or recharged
b	Refrigerant compressor does not run
b	See 7
c	Condenser pressure is too high
c	See 6
6	Condenser pressure too high or too low
a	Fan control switch out of order
a	Have switch replaced
b	Condenser fan motor out of order
b	Have fan motor inspected
c	Ambient temperature too high
c	Improve ventilation. If necessary, draw the cooling air from a cooler room
d	Condenser externally clogged
d	Clean condenser
7	Motor of refrigerant compressor stops or does not start
a	Thermal protection of the motor has tripped
a	Compressor will restart when the motor windings have cooled down

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