© Glenco Air & Power Pty Ltd
8.0 Troubleshooting
8.1 Precautions
Before performing any inspection, test or repair work on the compressor, isolate and tag-out the
power supply or disconnect the petrol engine’s spark plug, turn off the fuel supply (if engine-driven),
carefully release any residual air pressure from the air receiver tank and any connected air hoses or
piping, and close the air outlet valve or disconnect the outlet air hose. And, if possible, allow the unit
to cool down if it has been running.
Please refer to the troubleshooting guide shown in Table 8-1 for assistance with diagnosing and
repairing any problem that might occur with your air compressor. Whilst many of the tasks can be
undertaken by a mechanically proficient person with access to proper tools, all electrical work must
by undertaken by a licensed electrician.
It is recommended for your convenience that this troubleshooting guide be consulted prior to
contacting an Airmac dealer or Glenco Air & Power Pty Ltd for advice. Additional technical
information is available online for download at www.glencoairpower.com.au.
Please refer also to the separate instruction manual for troubleshooting of the petrol or diesel
engine, if fitted.
Table 8.1
Troubleshooting Chart
Motor will not start, runs
slowly or repeatedly trips out
overload protection.
1. Pressure switch not turned
on.
2. Air receiver tank pressure
above cut-in pressure.
3. No voltage at the pressure
switch.
4. No voltage at the electric
motor (faulty pressure
switch or star-delta
starter).
5. No voltage on one or two
phases of 415 V supply.
6. Low supply voltage.
7. Use of extension lead.
8. 240 V: Thermal overload
switch on motor tripped.
1. Turn on pressure switch.
2. Nil (no fault).
3. Check electricity supply
including all fuses, circuit
breakers, switches and
wiring.
4. Repair or replace pressure
switch or star-delta starter.
5. Check voltage on all three
phases of 415 V supply.
6. Check no load and full load
supply voltage. Upgrade
power supply circuit if
required. Disconnect any
other electrical devices on
the same supply circuit.
7. Do not use extension lead.
Use longer air hose with
larger diameter.
8. 240 V: Allow motor to cool
down and manually reset
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