Troubleshooting Chart - Marshalltown HC125A Mode D'emploi

Note: Troubleshooting problems may have similar causes and solutions.
PROBLEM
Low pressure or not
enough air
or
Compressor does not
stop
Excessive starting and
stopping, while not in
use
Air leaks from regulator,
or regulator does not
regulate pressure
Regulated pressure
gauge reading drops
when air accessory is
being used
Circuit breaker trips
(fuse blows) too often
Overheating
Motor stalls
18

TROUBLESHOOTING CHART

POSSIBLE CAUSE
Tank petcock is open
Fittings Leak
Restricted air intake
Prolonged excessive use of air
Compressor not large enough
Restricted check valve
Hole in air hose
Tank leaks
Blown seals
Valve leaks
Leaking or worn piston seal
Fittings leak
Dirty or damaged regulator
internal parts.
This is normal
Compressor not large enough
Low voltage
Excessive wire length
Restricted air passages
Back pressure in pump head
Poor ventilation
Dirty cooling surfaces
Leaking valve
Low voltage
Defective pressure switch
bleeder valve
SOLUTION
Close petcock
Check fittings with soapy water. Tighten or reseal leaking fittings.
DO NOT OVERTIGHTEN.
Clean or replace air filter element.
Decrease amount of air used.
Check air requirement of accessory. If it is higher than CFM and
pressure supplied by compressor, you need a larger compressor.
Most accessories are rated at 25% of actual CFM while running
continuously.
Remove and clean or replace.
Check and replace if necessary.
: Immediately replace tank. DO NOT attempt to
WARNING
repair.
Replace any faulty seals.
Contact authorized service center.
Replace piston and cylinder sleeve assemblies.
Check fittings with soapy water. Tighten or reseal leaking fittings.
DO NOT OVERTIGHTEN.
Replace any faulty seals.
Replace regulator or internal parts.
If pressure drops too low, adjust regulator while accessory is used.
Check air requirement of accessory. If it is higher than CFM and
pressure supplied by compressor, you need a larger compressor.
Most accessories are rated at 25% of actual CFM while running
continuously.
Furnish adequate power. If using extension cord, try without.
Consult electrician.
Contact authorized service center.
Replace check valve, pressure switch bleeder valve.
Relocate compressor to an area with cool, dry and well-circulated
air.
Clean all cooling surfaces of pump and motor thoroughly.
Contact authorized service center.
Furnish adequate power.
Replace pressure switch bleeder valve.
200-2523