OPERATING INSTRUCTIONS
www.flextool.com.au
5
Trouble Shooting
The following table is provided as a general guide only. Please refer to your local Flextool agent for
service, repairs, parts and/or specific advice.
Fault
Probable Cause
Possible Remedy
Pump runs normally
but pressure does not
achieve rated value.
Pump is sucking air.
Check that all hoses and fittings are
airtight.
Valves are worn or dirty.
Check, clean or replace.
Unloader valve packing worn.
Check and replace.
Nozzle incorrect or worn.
Check and replace.
Worn piston packing.
Check and replace.
Dirty inlet filter.
Check and clean.
Fluctuating pressure.
Valves dirty, worn or stuck.
Check, clean or replace.
Pump sucking air.
Check that all hoses and fittings are
airtight.
Worn piston packing.
Check and replace.
Dirty filter.
Check and clean.
Presence of water in
oil.
High humidity in air.
Check and change oil twice as often.
Piston packing or oil seal worn.
Check and replace.
Water entering through breather.
Excessive water on machine.
Water dripping from
pump.
Piston packing worn.
Check and replace.
Piston guide o-rings worn.
Check and replace.
Dripping oil.
Worn oil seals.
Check and replace.
Oil coming out of breather.
Pump oil level overfull.
Motor does not start
when switched on.
Plug not well-connected or unreliable
power supply.
Check plug, cable & switch.
Earth leakage overload.
Check earth leakage.
When switched on the
motor hums but does
not run.
Mains voltage is insufficient.
Check adequacy of mains power supply.
Motor stops suddenly
during operation.
Thermal overload tripped due to
overheating.
Check mains voltage for fluctuations.
