14
8.
Trouble Shooting
Electric power can cause severe injuries. Defective electrical compo-
nents to be immediately replaced, possible causes for accidents to be
eliminated without delay. Any repair work must only be carried out by
qualified personnel.
Only original equipment expressively approved by the manufacturer to
be installed, as otherwise warranty and Declaration of Conformity will
cease, health and safety standards are not guaranteed.
During repair or maintenance work, unit to be disconnected from
electrical network.
Malfunction
Cause
Remedy
Electric motor does not start.
- Motor protection switch not pushed.
- Machine not connected to power
source.
- Fuse burnt.
- Phase missing.
- Motor protection switch defective.
- Poor water supply
(only in case SCS system is installed)
- Push motor protection switch.
- Connect machine to power source,
switch on main switch.
- Replace fuse. If it burns again, call
qualified service.
- Phase to be mounted as per electric
wiring diagram.
- Call qualified service.
- Ensure sufficient water supply.
Electric motor suddenly stops,
motor protection switch trips.
- Poor water supply
- Fuse burnt.
(phase missing).
- Low voltage.
- Motor protection switch defective.
- Operating pressure high.
- Eliminate cause and re-start machine
with ON/OFF switch.
- Replace fuse. If it burns again or motor
is noisy, call qualified service.
- Ensure correct power supply.
- Call qualified service.
- Clean/replace nozzle
(see Technical Data).
Electric motor noisy upon start-up.
- Fuse burnt.
(phase missing).
- Fault in electrical network
- Replace fuse. If it burns again, call
qualified service.
- Check phases in electric plug.
Operating pressure not achieved/varies
- Air in unit
- Nozzle worn.
- Incorrect nozzle.
- Nozzle partly clogged.
- Water filter dirty.
- Unloader valve leaking
- Suction side leaking
- Suction valves sticking/dirty.
- Bleed unit.
Open pressure regulating handle and
pistol, until continuous pressure is
reached.
- Replace nozzle.
- Install correct nozzle.
- Remove/clean/re-install nozzle.
- Clean water filter.
- Call qualified service.
- Tighten hose clamps on suction hose.
- Remove/clean/re-install valves.
Vibrations on high pressure hose and
spray pistol
- Air in unit
- Bleed unit.
Open pressure regulating handle and
pistol, until continuous pressure is
reached.
