Kranzle quadro 1000 TS Operating Manual page 16

Small repairs - do it yourself
Problem
After closing the safety trigger gun the high-pressure cleaner
keeps switching on and off.
The stainless steel pressure gauge continuously displays full pressure.
Possible cause No. 1
Leckage.
In case of a leakage there is no guarantee for possible
consequential damages.
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Having closed the trigger gun with safe-
ty catch, the high-pressure cleaner must
shut down and the stainless steel pressure
gauge must show „0" bar. If not shut down
and the stainless steel pressure gauge con-
tinuously shows full pressure, this could be
due to leakage at the high-pressure pump,
at the pressure switch, at the high-pressure
hose or at the trigger gun with safety catch.
Proceeding:
Check connections from the high-pressure
cleaner to the high-pressure hose and from
the high-pressure hose to the safety trigger
gun and also the connection between lance
and safety trigger gun for tightness.
Switch off the cleaner. Shortly press the
trigger of the trigger gun with safety catch
to decrease the pressure. Remove high-pres-
sure hose, trigger gun with safety catch and
lance and check the O-rings. If the O-rings
are damaged they have to be replaced.
Small repairs - do it yourself
Problem
After closing the safety trigger gun the high-pressure cleaner
keeps switching on and off.
The stainless steel pressure gauge continuously displays full pressure.
Possible cause No. 2
The non-return valve is defective.
There is no guarantee if the high-pressure pump is damaged by
defective O-rings due to air induction or lack of water (cavitation).
Proceeding:
Switch off the high-pressure cleaner and
pull plug from socket. Stop water supply.
Operate safety trigger gun catch several
times to decrease the pressure.
Unscrew pump outlet.
Remove check body and check O-Ring for
soiling or damage. Also check seal seat in-
side pump housing for soiling or damage.
If sealing rings are defective replace
O-rings at once.
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