Makita hw111 [15/140] Troubleshooting
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Makita hw111 [15/140] Troubleshooting

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Makita hw111 [15/140] Troubleshooting
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TROUBLESHOOTING
Problem Possible causes Remedy
Pump does not reach working
pressure
Nozzle worn Replace nozzle
Water filter fouled Clean filter (fig.5)
Water supply pressure low Turn on water supply tap fully
Air being sucked into system Check tightness of hose fittings
Air in pump
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.
Adjustable nozzle not positioned correctly Turn the adjustable nozzle (E) (+) (fig.3)
Thermostatic valve tripped Wait for correct water temperature to be restored
Pressure drops during use
Water intake from external tank Connect appliance to the mains water supply
Intake water too hot Reduce temperature
Nozzle clogged Clean nozzle (fig.5)
Intake filter (L) dirty Clean filter (L) (fig.5)
Motor “sounds” but fails to start
Insufficient power supply
Check that the voltage of the mains power supply line is
the same as that on the plate (fig.2)
Voltage loss due to use of extension cable Check characteristics of extension cable
Appliance not used for a long period of time Contact your nearest Authorized Service Centre
Problems with TSS device Contact your nearest Authorized Service Centre
Motor fails to start
No electrical power
Check that the plug is firmly in the socket and that the
mains voltage supply is present (*)
Problems with TSS device Contact your nearest Authorized Service Centre
Appliance not used for a long period of time
Using the tool (M) unjam the motor from the hole at the
rear of the appliance (in models with this feature) (fig.5)
Water leakage
Seals worn
Have the seals replaced at your nearest Authorized
Service Centre
Safety valve tripped and discharging Contact an Authorized Service Centre
Appliance noisy Water too hot Reduce temperature (see technical data
Oil leakage Seals worn Contact your nearest Authorized Service Centre
TSS versions only: motor starts
even with gun trigger is released
High pressure system or pump hydraulic circuit not
watertight
Contact your nearest Authorized Service Centre
TSS versions only: no water deliv-
ery when gun trigger is depressed
(with supply hose connected)
Nozzle clogged Clean nozzle (fig.5)
No detergent taken in
Adjustable nozzle on high pressure setting
Set nozzle on "
" setting (fig.5)
Detergent too dense Dilute with water
High pressure hose extension being used Fit original hose
Deposits or restriction in detergent circuit
Flush with clean water and eliminate any restrictions. If the
problem persists, contact an Authorized Service Centre
(*) If the motor starts and does not restart during operation, wait 2-3 minutes before repeating the start-up procedure (overload cutout has been tripped).
If the problem recurs more than once, contact your nearest Authorized Service Centre.

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