Fault Finding - Bosch AQUATAK 150 PRO Operating Instructions Manual

F016 L70 375 - GB Seite 6 Montag, 14. November 2005 1:15 13

Fault Finding

The following table gives checks and actions that you can perform if your machine does not operate correctly.
If these do not identify/remedy the problem, contact your service agent.
Warning: Switch off and remove plug from mains before investigating fault.
Symptom
Motor refuses to start
Motor stops
Fuses blow
Excessive working pres-
sure
Pressure pulsating
Pressure too low, but
steady
Note: Several types of
accessory will normally
deliver a lower pressure
Motor starts up but no
working pressure
The pressure washer
starts irregularly by itself
Water leaks from
machine
18 • F016 L70 375 • TMS • 21.10.05
Possible Cause
Plug not connected
Mains socket faulty
Fuse faulty/blown
Extension cable damaged
Motor protector has activated
Frozen
Fuse faulty/blown
Wrong mains voltage
Motor protector has activated
Fuses incorrectly rated
Nozzle partly blocked
Air in the inlet water supply hose/
pump
Inadequate water supply
Water strainer blocked
Water supply hoses squeezed
High pressure hose too long
Nozzle worn
Start/stop valve worn
No water supply
Water strainer clogged up
Nozzle clogged up
Pump/power gun leaky
Leaking pump
English - 6
Remedy
Connect plug
Use another socket
Replace fuse
Try without extension cable
Allow to cool for 5 minutes
Wait for pump/water supply hose/
accessory to thaw
Replace fuse
Check that mains voltage corresponds
to specifications on the model tag
Allow to cool for 5 minutes
Change to a mains supply higher than
the pressure washer amp consump-
tion
Clean nozzle
Allow pressure washer to run with
open spray handle and nozzle at low
pressure until regular working pres-
sure is obtained.
Check that the water supply corre-
sponds to specifications. The mini-
mum specification for the water supply
hose is 1/2" or 13 mm diameter.
Clean water strainer
Straighten out kinked water supply
hoses
Dismount high pressure extension
hose. Retry (extension hose max.
10 m)
Change the nozzle
Activate trigger five times in quick suc-
cession
Connect water supply
Clean the water strainer
Clean nozzle
Contact your Bosch Service Centre
6 drops per minute are permissible. In
case of more serious leakage, you
should contact your Bosch Service
Centre.