Demon Storm 1, Operation Manual, Page: 9 / 44

FAULT CAUSE REMEDY
Machine stops suddenly
Or will not start.
Blown fuse.
Check mains power supply, re-
place fuse. Wait until unit cools
down before resetting switch.
Sudden pressure loss. Water supply failed. Check water supply.
Low pressure
HP nozzle worn or
unloader set
Incorrectly.
Replace HP nozzle. Set unloader
to correct setting.
Low pressure with noise and
vibration.
Valves worn or
blocked. Piston seals
worn.
Pump sucking air. Clean/replace as required.
Replace.
Check water supply pipe and un-
ions.
Pump will not by-pass.
Non return valve
dirty or jammed.
Clean or replace.
Water drips from pump box. Pump seals worn. Replace.
Oil drips from pump bottom. Oil seal worn. Replace.
Oil is milky in colour.
Water ingress
through oil filter
plug.
Rinse pump out and replace oil.
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