Comet CLASSIC 3.11 Notice Technique - Utilisation Et Entretien page 34

PROBLEM
The cleaner vibrates a lot and
is noisy.
The cleaner fails to reach
maximum pressure
34
CAUSE
The water inlet filter (18) is dirty
The cleaner is taking in air.
Not enough water supply or
priming too deep
Detergent regulating knob (34)
in the open position and either
tank is empty or the cap (55) is
badly positioned (only models
with tray).
The adjustment valve is set for a
pressure below the maximum.
The pressure regulator (64) of the
cleaner gun (63) is set for a lower
pressure value (EVO only).
The nozzle support head (30) is set
at low pressure (Fig. 9 - Position a)
(only models without box).
The nozzle is worn.
Not enough water supply or
priming too deep
Backflow hydraulic device fault.
SOLUTION
Follow the instructions in
MAINTENANCE".
Check there are no leaks in the suction
circuit.
Check that the tap is fully open
and the mains water flow rate
and priming depth comply with
the data given in the paragraph
"TECHNICAL CHARACTERISTICS AND
SPECIFICATIONS".
Top up the detergent or put the
detergent regulating knob into
the closed position, turning it
anticlockwise, or position the cap
correctly.
Turn the knob clockwise (8).
Turn the regulator completely as in
Step H in Fig. 7. (EVO only).
Follow the indications in Fig. 9 -
Position b.
Replace the nozzle as instructed in
"ROUTINE MAINTENANCE".
Check the tap is fully open and that
the mains water pressure or the
priming depth comply with the data
in
"TECHNICAL CHARACTERISTICS AND
.
SPECIFICATIONS"
Refer to the relative manual.
(continues on the next page)
"ROUTINE