Nilfisk-Advance Gerni N/G-6400A Betriebsanleitung Seite 33

Symptoms
The high pressure
cleaner does not start.
The high pressure
cleaner suddenly stops.
Motor hums when
starting.
The high pressure hose and
the pistol are vibrating.
The by-pass valve is
"knocking" or the gauge
fluctuates with open pistol.
The safety valve begins to
function or the pressure
of the machine is too high.
The nozzle does
not oscillate.
Turbo Laser leaks.
No detergent supply.
Boiler smokes.
The machine suddenly
emits steam.
The burner stops
during operation.
The burner starts and
stops incorrectly with
The burner does
not start.
The high pressure cleaner
does not go to max.
pressure/pressure
fluctuates.
The water does not reach
operating temperature.
FAULT FINDING
Cause
Start/stop knob not activated.
Cleaner is not connected
to the electric supply.
Fuse blown.
Phase is missing in the electric plug.
Fuse blown.
Low voltage.
Motor too hot.
Working pressure too high
(nozzle dirty or wrong nozzle).
Fuse blown.
Defect in the electric supply mains.
Air in the pump.
Lack of water.
The nozzle is partially
blocked.
Front nozzle partially blocked.
Pressure nozzle partially blocked.
Wrong nozzle.
Turbo Laser dirty.
Turbo Laser worn.
Turbo Laser filter blocked.
Wrong nozzle.
Gaskets defective.
Empty detergent tank.
Detergent filter dirty.
Water in the fuel.
Cleaning fluid tank empty
(takes in air).
The pump suction side is
leaking (takes in air).
Thermostat set too low.
Fuel filter dirty.
Water in the fuel.
Fuel filter dirty.
Thermostat set too low.
Thermostat set too low.
Fuel filter dirty.
Water in the fuel.
Detergent tank empty (takes in air).
Detergent hose defect.
The pump suction side
leaks (takes in air).
High pressure nozzle blocked.
Machine needs decalcification
High pressure nozzle worn.
Air in the system.
Wrong nozzle.
Operating thermostat set too low.
Fuel filter dirty.
The machine needs descaling.
Boiler and coil clogged uo
Remedy
Turn knob to position "1".
Put the power plug into the socket,
switch on the main switch.
Change it. If it still blows contact service department.
Reconnect plug, as per the electric diagram.
Change fuse. If it still blows contact the service department.
Extension cable too long contact service department.
Turn start/stop knob to position "0" and wait till motor has
cooled off. Re-start.
Clean/change nozzle (see "Technical Data").
Change fuse. If fuse still blows or motor
still hums, contact service department.
Check the phases in electric plug.
Tighten suction hose again.
Clean suction filter. Open the water cock completely.
Remove and clean pressure nozzle.
Remove and clean front nozzle.
Remove and clean pressure nozzle.
Change nozzle (see "Technical Data").
Disassemble and clean Turbo Laser.
Change pressure nozzle and wheel (Service Kit).
Clean/change filter (see Maintenance).
Change the nozzle (see "Technical Data").
Leak can seal itself with continued use.
Replace gaskets nozzle (Service Kit).
Refill.
Clean detergent filter.
Empty and clean fuel tank (see Maintenance).
Re-fill the tank. Close the dosing valve.
Bleed hoses.
Check for leakages - tighten hose retaining rings.
Check the thermostat setting and adjust if necessary.
Clean the fuel filter (see "Maintenance").
Empty and clean fuel tank (see Maintenance).
Clean the fuel filter (see Maintenance).
Check the thermostat setting and adjust correct working
pressure if necessary.
Check the thermostat setting and adjust if necessary.
Clean the fuel filter (see Maintenance).
Empty and clean fuel tank (se Maintenance).
Refill the tank. Close the detergent valves.
Replace the detergent hoses.
Check for leakages, tighten any hose retaining rings.
Remove and carefully clean the nozzle.
Descale the machine (see Maintenance).
Fit new nozzle. Note nozzle type (see "Tecnical Data").
Bleed the cleaner. Open the pressure regulation handle, acti
vate the pistol. Let the machine run until stable pressure has
been obtained.
Change the nozzle. Note nozzle type (see "Technical Data").
Check the thermostat setting and adjust if necessary.
Clean the fuel filter (see Maintenance).
Descale the machine - seemaintenance.
Call service engineer.
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