Fault Finding - Nilfisk Gerni 2300A Mode D'emploi

Symptoms Cause
By-pass valve Nozzle partly blocked.
"hammers" or pressure
gauge oscillates. Pressure outlet systerm leaks.
Safety valve starts func- Primary nozzle partly blocked.
tioning or high pressure
cleaner operates at too
high a pressure. Pressure nozzle partly blocked.
Nozzle does not tilt. Turbo Laser dirty.
Turbo Laser filter dirty.
Turbo Laser leaks.
Gaskets defective.
No detergent added. Detergent tank empty.
Detergent filter dirty.
Metering valve closed.
Boiler smokes. Water in the fuel.
Air in the fuel system.
The burner cuts out Thermostat set too low.
during operation. No water supply.
No fuel.
Fuel filter dirty.
Water in the fuel.
Fuel tank emty
Insufficient water.
The burner starts and Fuel filter dirty.
stops incorrectly with correct
working pressure. Thermostat set too low.
Burner does not light. Wrong phase sequence.
Thermostat set too low.
Fuel filter dirty.
Water in the fuel.
Fuel tank emty
High pressure cleaner Suction side of pump leaks (takes in air).
does not operate at max. High pressure nozzle blocked.
pressure/pressure oscil- The machine needs descaling.
lates. High pressure nozzle worn.
Air in the system.
The water does not reach Operating thermostat set too low.
operating temperature. Fuel filter dirty.
The machine needs descaling.
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FAULT FINDING

Corrective action
Remove and clean the nozzle.
Contact service department.
Remove and clean front nozzle.
Remove and clean pressure nozzle.
Disconnect and clean Turbo Laser.
Clean/change the filter (see maintenance).
The leak may seal itself by continued usage.
Change gaskets (Service kit).
Fill up.
Clean detergent filter.
Open.
Empty and clean fuel tank (see maintenance) .
If the fuelsupply has been switched off ( at first time start or
if the fuel hoses have been taken out of the fuel tank) there
will beair in the fuel system when you start the machine.
Turn start/stop button clockwise clockwise to max. tempera
ture. after a few minutes the system has been bled and the
combustiion is back to normal. If the machine is equipped
with a flame control it might be necessary to rest the
start/stop button during air escape.
Check thermostat setting and make correction.
Turn on water.
Fill tank.
Clean fuel filter (see maintenance).
Empty and clean fuel tank (see maintenance).
Add fuel
The water tap fully open.
Clean fuel filter (see maintenance).
Check thermostat setting and reset.
Change phases in the electric plug.
Check thermostat setting and make correction.
Clean fuel filter (see maintenance).
Empty and clean fuel tank (see maintenance).
Add fue.
Check for leaks, tighten hose clamps.
Disconnect nozzle and clean it carefully.
Descale the machine according to maintenance.
Install new nozzle. Note type (see technical data).
Bleed out the cleaner. Open pressure regulating handle,
activate the pistol.
Let the machine run until stable pressure is reached.
Check thermostat setting and make correction.
Clean fuel filter (see maintenance).
Descale the machine according to maintenance.
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