Comet K Steel, Use And Maintenance Instruction Manual

Page: 34 / 120

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