SYMPTOM PROBABLE CAUSES REMEDY
Compressor unit will not Pressure switch defective. Contact Clarke Service
stop automatically. Department
Bleed valve under Non-return valve leaking. Clean non-return valve
pressure switch blows or replace.
whilst compressor is
not running.
Bleed valve under Relief valve leaking. Clean relief valve or
pressure switch change pressure switch.
blows whilst machine
is running.
Compressor runs Suction filter blocked. Change filter.
continuously and can’t V-belt too slack (not Tighten V-Belt.
attain the working applicable to direct
pressure required. drive machines).
Leak between compressor Tighten connection and
block and air receiver/ repair leak or contact
leaks in or near air receiver. Clarke Service Dept
RPM too low because of Contact Clarke Service
incorrectly connected Department
electric motor.
Valves blocked by dirt, Contact Clarke Service
paint, dust or coked up. Department
Inspection cover or plug Empty air receiver and
leaking. change seal or contact
Clarke Service Dept.
Suction rendered difficult or Ensure unobstructed air
impossible at suction intake Flow around the unit.
or the air being taken in is
too warm.
Pressure gauge defective. Install a larger
Unit too small in relation to compressor
air consumption of
connected equipment
Compressor worn. Have compressor over-
hauled or replace it.
10
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