Draper 99074, Manual, Page: 14 / 16

For further assistance, service and maintenance contact Draper Tools on 023 8026 6355.
Compressor air flow lower than
normal, or cannot pump to
higher pressures.
– Worn piston ring or inlet valve.
– Service or replace compressor.
Excessive knocking or rattling. – Worn bearing on eccentric or
motor shaft.
– Cylinder or piston ring is worn.
– Service or replace compressor.
Thermal overload protector cuts
out repeatedly.
– Lack of proper ventilation
or ambient temperature is
too high.
– Compressor valves failed.
– Move compressor to well
ventilated area, or area with
lower ambient temperature.
– Service or replace compressor.
Compressor will not run. – No power, or power switch in
OFF position.
– Blown fuse.
– Motor overheats.
– Make sure compressor switch
is ON.
– Disconnect compressor from
power source, replace fuse.
(Refer to Specifications section
for correct fuse amperage).
– Let compressor cool off for about
30 minutes to allow thermal
overload switch to reset.
Problems Possible cause Required action
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10.1 TROUBLESHOOTING GUIDE
10. TROUBLESHOOTING