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Problem
Possible Cause
Wrong mains voltage
Motor protector has activated
Circuit breaker activ-
Circuit breaker rating too low
ated
Motor starts but no
Nozzle partly blocked
pressure
Motor "sounds" but no
Insufficient power supply
function
Voltage loss due to use of extension cable
Appliance not used for a long period of time
Problems with TSS (Total Stop System) device
Pressure pulsating
Air in the inlet water supply hose/pump
Inadequate water supply
Water filter blocked
Water supply hoses squeezed
High pressure hose too long
Pressure too low, but
Nozzle worn
steady
Start/stop valve worn
Note: Several types of
accessory will normally
deliver a lower pres-
sure
Motor starts up but
No water supply
with restricted or no
Water filter clogged up
working pressure
Nozzle clogged up
The pressure washer
Pump/ power gun leaky
starts irregularly by it-
self
Water leaks from ma-
Leaking pump
chine
Maintenance and Service
Maintenance
Stop, remove plug from the power supply and disconnect
u
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
Bosch Power Tools
Corrective Measure
Check that mains voltage corresponds to specific-
ations on the model tag
Allow to cool for 15 minutes
Switch to another circuit that allows for higher
power consumption.
Clean nozzle
Check that the voltage of the mains power supply
line is the same as that on the plate.
Check characteristics of extension cable
Contact your Bosch Service Centre
Contact your Bosch Service Centre
Allow pressure washer to run with open spray
handle and nozzle at low pressure until regular
working pressure is obtained
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
Clean water filter
Straighten out kinked water supply hoses
Remove high pressure extension hose. Retry (ex-
tension hose max. 7 m)
Change the nozzle
Activate trigger five times in quick succession
Connect water supply
Clean the filter
Clean nozzle
Contact your Bosch Service Centre
A slight water leak is permissible; in case of ex-
cessive leak, contact Bosch Service Centre.
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 release
any built-up pressure and drain the water from the high pres-
sure 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.
English | 15
F 016 L81 291 | (24.11.2022)
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