Marshalltown HC128A DuoFlex Air Compressor - Manual (Page 19)

19 200-2360
Note: Troubleshooting problems may have similar causes and solutions.
Contact authorized service center. Tank pressure exceeded normal
operating pressure
Contact authorized service center. Pressure switch stuck
Motor will start automatically when tank pressure drops below
kick-in pressure of pressure tank. Tank pressure exceeds preset
pressure switch limit
Let motor cool off and overload switch will automatically reset. This
may take several minutes. Motor overload protection has
tripped
• Replace blown fuse or resed circuit breaker. Do not use fuse or
circuit breaker with higher rating than specified for your branch
circuit.
Fuse blown or circuit breaker
tripped
• Check for proper fuse; “Fusetron” type T is acceptable.
• Check for low voltage and proper extension cord size.
• Disconnect other applications from circuit. Operate compressor
on a dedicated circuit.
Remove and clean or replace. Check valve stuck open
Bleed line by moving pressure switch lever to OFF Position before
restarting. If bleeder valve does not open, replace bleeder valve. Pressure bleeder valve on
pressure switch has not
unloaded head pressure
Check for proper gauge and extension cord length. Wrong wire gauge in cord or
excessive extension cord length
Contact authorized service center. Loose electrical connections
Contact authorized service center. Possible defective capacitor
Have checked at service center. Do not operate compressor in the
paint spray area Paint spray on internal motor
parts
Have checked at service center. Possible defective motor
SOLUTION POSSIBLE CAUSE
Pressure relief valve
opens
Motor will not run
PROBLEM
TROUBLESHOOTING CHART