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Problem Possible Cause Corrective Action
Fuses blow Fuses incorrectly rated Change to a mains supply higher than the pres-
sure washer amp consumption
Motor starts but no
pressure
Nozzle partly blocked Clean nozzle
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.
Voltage loss due to use of extension cable Check characteristics of extension cable
Appliance not used for a long period of time Contact your Bosch Service Centre
Problems with TSS (Total Stop System) device Contact your Bosch Service Centre
Pressure pulsating Air in the inlet water supply hose/pump Allow pressure washer to run with open spray
handle and nozzle at low pressure until regular
working pressure is obtained
Inadequate water supply Check that the water supply corresponds to spe-
cifications. The minimum specification for the wa-
ter supply hose is 1/2" or 13mm diameter
Water filter blocked Clean water filter
Water supply hoses squeezed Straighten out kinked water supply hoses
High pressure hose too long Remove high pressure extension hose. Retry (ex-
tension hose max. 7m)
Pressure too low, but
steady
Note: Several types of
accessory will normally
deliver a lower pres-
sure
Nozzle worn Change the nozzle
Start/stop valve worn Activate trigger five times in quick succession
Motor starts up but
with restricted or no
working pressure
No water supply Connect water supply
Water filter clogged up Clean the water filter
Nozzle clogged up Clean nozzle
The pressure washer
starts irregularly by it-
self
Pump/ power gun leaky Contact your Bosch Service Centre
Water leaks from ma-
chine
Leaking pump A slight water leak is permissible; in case of ex-
cessive leak, contact Bosch Service Centre.
Maintenance and Service
Maintenance
u Stop, remove plug from the power supply and discon-
nect from water supply.
Note: To ensure long and reliable service, carry out the fol-
lowing maintenance regularly.
Regularly check for obvious defects such as loose fixings,
and worn or damaged components.
Check that covers and guards are undamaged and correctly
fitted. Carry out necessary maintenance or repairs before
using.
In order to avoid safety hazards, if the power supply cord
needs to be replaced, this must be done by Bosch or by an
after-sales service centre that is authorised to repair Bosch
power tools.
After use/Storage
Turn the main switch off and operate the trigger to drain the
water from the high pressure hose.
Clean the exterior of the machine thoroughly using a soft
brush or cloth. Do not use water, solvents or polishes. Re-
move all debris, especially from the ventilation slots.
End of season storage: Drain water out of pump running mo-
tor for a few seconds. Pull trigger to release all water.
Do not place other objects on top of the machine.
Store in a frost-free area.
Ensure cables are not trapped when storing. Do not kink high
pressure hose.
After-sales Service and Application Service
www.bosch-do-it.com
Bosch Power Tools F 016 L81 693 | (30.04.2019)
19


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