Comet K Steel Bedienungs- Und Wartungsanleitung Seite 34

PROBLEMS
The high pressure cleaner
is vibrating a lot and is
noisy.
The high pressure cleaner
fails to reach maximum
pressure.
Poor detergent suction.
No water comes out of the
nozzle or flow rate is poor.
Water leaking from under
the high pressure cleaner
(K Steel 7.15 / K Steel 10.21).
34
CAUSES
The water inlet filter (35) or (14)
(depending on the model) is dirty.
Air suction.
Pump priming is incomplete.
Not enough water is being
supplied or priming depth is
excessive.
Throttling in the suction circuit
(bends, elbows, etc.).
The regulation valve is set for a
pressure lower than the maximum
one.
The nozzle holder head (23) or
device (39) is in the low pressure
position (Fig. 8-a).
The nozzle is worn.
Not enough water is being
supplied or priming depth is
excessive.
Back-flow preventer fault.
The nozzle holder head (23)
or device (39) is not in the low
pressure position (Fig. 8-b).
Detergent suction filter (29)
clogged.
The detergent being used is too
viscous.
No water.
Priming too deep.
Water nozzle clogged.
Pump priming is incomplete.
Back-flow preventer fault.
Thermostatic valve triggered.
REMEDIES
Follow the instructions given in the "Routine
Maintenance" paragraph.
Check soundness of the suction circuit.
Follow the instructions given in the
"Operation – Preliminary activities"
paragraph.
Make sure the tap is fully open and that the
mains flow rate or priming depth conform to
what is specified in the "Specifications and
technical data" paragraph.
Use an suction hose free from throttling.
Turn the pressure adjustment knob (8)
clockwise.
Proceed as explained in Fig. 8-b.
Replace the nozzle as explained in the
"Routine Maintenance" paragraph.
Make sure the tap is fully open and that the
mains flow rate or priming depth conform to
what is specified in the "Specifications and
technical data" paragraph.
Refer to the relative manual.
Proceed as explained in Fig. 8-a.
Follow the instructions given in the "Routine
Maintenance" paragraph.
Use a detergent recommended by the
manufacturer and follow the diluting
instructions on the label.
Check that the mains water tap is fully open
or the suction pipe can prime.
Check that the priming depth conforms to
what is specified in the "Specifications and
technical data" paragraph.
Clean and/or replace the nozzle as explained
in the "Routine Maintenance" paragraph.
Follow the instructions given in the
"Operation – Preliminary activities"
paragraph.
Refer to the relative manual.
Reduce the time the high pressure cleaner
stays in the by-pass operating mode (see also
the "Stopping operation" paragraph).
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