Makita HW 151 Manual page 15

9
Pump does not reach working
pressure
Pressure drops during use
Motor "sounds" but fails to start
Motor fails to start
Water leakage
Appliance noisy
Oil leakage
motor starts
even with gun trigger is released
no water deliv-
ery when gun trigger is depressed
(with supply hose connected)
No detergent taken in
(*) If the motor starts and does not restart during operation, wait 2-3 minutes before repeating the start-up procedure (
If the problem recurs more than once, contact your nearest Authorized Service Centre.
Nozzle worn
Water filter fouled
Water supply pressure low
Air being sucked into system
Air in pump
Adjustable nozzle not positioned correctly
Thermostatic valve tripped
Water intake from external tank
Intake water too hot
Nozzle clogged
Intake filter ( ) dirty
Insufficient power supply
Voltage loss due to use of extension cable
Appliance not used for a long period of time
Problems with TSS device
No electrical power
Problems with TSS device
Appliance not used for a long period of time
Seals worn
Safety valve tripped and discharging
Water too hot
Seals worn
High pressure system or pump hydraulic circuit not
watertight
Nozzle clogged
Adjustable nozzle on high pressure setting
Detergent too dense
High pressure hose extension being used
Deposits or restriction in detergent circuit
Replace nozzle
Clean filter (fig.5)
Turn on water supply tap fully
Check tightness of hose fittings
Switch off the appliance and keep depressing and releas-
ing the gun trigger until the water comes out in a steady
flow. Switch the appliance back on again.
Turn the adjustable nozzle ( ) (+) (fig.3)
Wait for correct water temperature to be restored
Connect appliance to the mains water supply
Reduce temperature
Clean nozzle (fig.5)
Clean filter ( ) (fig.5)
Check that the voltage of the mains power supply line is
the same as that on the plate (fig.2)
Check characteristics of extension cable
Contact your nearest Authorized Service Centre
Contact your nearest Authorized Service Centre
Check that the plug is firmly in the socket and that the
mains voltage supply is present (*)
Contact your nearest Authorized Service Centre
Using the tool ( ) unjam the motor from the hole at the
rear of the appliance (in models with this feature) (fig.5)
Have the seals replaced at your nearest Authorized
Service Centre
Contact an Authorized Service Centre
Reduce temperature (see technical data
Contact your nearest Authorized Service Centre
Contact your nearest Authorized Service Centre
Clean nozzle (fig.5)
Set nozzle on setting (fig.5)
Dilute with water
Fit original hose
Flush with clean water and eliminate any restrictions. If the
problem persists, contact an Authorized Service Centre
15
).