9 - TROUBLE SHOOTING
ATTENTION
• ALWAYS DISCONNECT THE APPLIANCE FROM THE ELECTRIC POWER SUPPLY BEFORE CARRYING OUT ANY REPAIR WORK.
• THE ELECTRICAL COMPONENTS MUST ONLY BE CHECKED BY THE AUTHORISED CUSTOMER SERVICE.
SYMPTOM
CAUSE
REMEDY
The pump is running normally but pressure
does not reach rated values
Fluctuating pressure
Pressure drop
High pressure hose is vibrating
Machine is producing too much noise
Presence of water in oil
Water dripping from under pump
Oil leakage
Unloader valve is “knocking” continuously
during operation.
Unloader valve is “knocking” with gun in
closed position.
Burner is smoking
Pump is sucking air
Valves worn or dirty
Unloader seat worn or faulty
Water nozzle incorrect or worn
Worn piston packing
Valves are worn , dirty or stuck
Pump sucking air
Worn piston packings
Worn nozzle
Valves are worn , dirty or stuck
Unloader valve seat worn or dirty
Worn piston packings
Pump is sucking air form an empty
detergent tank
Pump sucking air from hoses or fittings
Air in the water circuit
Valves dirty or stuck
Pump sucking air
Valves worn, dirty or stuck
Worn bearings
Water too hot
Worn packings and oil seals
High humidity in the air
Worn piston packings
O-rings of piston guide or retainer worn
Worn oil seals
Water nozzle partially blocked
Water filter dirty
Gun is leaking
Air in the water circuit
Damaged high pressure hose
Faulty unloader valve.
Water in the fuel tank
Fuel pressure is incorrect
Air throttle improperly adjusted
Electrodes improperly positioned
Check that hoses and fittings are tight
Check and replace if necessary
Check and replace if necessary
Check and replace if necessary
Check and replace if necessary
Check, clean or replace
Check that hoses and fittings are tight
Check and replace if necessary
Check and replace
Check, clean or replace
Check, clean or replace
Check and replace if necessary
Refill the detergent tank
Tighten the detergent valve.
Check there is no leaking:. Tighten every
loose fitting. Contact Maintenance Service.
Disconnect the high pressure hose and let
the unit run until the water is flowing con
-
stantly
without air.
Check, clean or replace if necessary.
Check that hoses and fittings are tight
Check, clean or replace
Check and replace if necessary. Contact
Maintenance Service.
Reduce temperature to below 60°C.
Check and replace if necessary
Check and change oil twice as often
Check and replace. Contact Maintenance
Service.
Check and replace. Contact Maintenance
Service.
Check and replace
Check that the outlet is suitable
Clean water nozzle
Clean water filter
Clean inside the gun, removing any de
-
posits or build-ups. Contact Maintenance
Service.
Repeat procedures outlined in “High pres
-
sure hose is vibrating”
Replace high pressure hose
Contact Maintenance Service.
Empty the fuel tank, clean and refill with
clean fuel.
If the pressure is too low, with a screwdriver
turn the adjusting screw clockwise, until
obtaining around 10 bar (147 PSI). Vice
versa if too high. Contact Maintenance
Service.
By means of the air control, close the gap
until the soot just stops forming. Contact
Maintenance Service.
Regulate the distance between electrodes
Summary of Contents for 2015Pi D
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