Comet K 250 STATIC, Instruction Manual

Page: 24 / 76

24
TROUBLESHOOTING
PROBLEMS CAUSES REMEDIES
When the master
switch (1) is moved to
position “1” , machine
does not start.
Tripping of the system cut-out
device (fuse, RCCB, etc.) to which
the machine is connected.
Reset the cut-out device.
In case this trips again, do not
use the machine and contact a
Specialized Technician.
The plug is not properly fitted. Disconnect the plug and fit it back
correctly.
The machine vibrates a
lot and is noisy.
Water inlet filter (30) dirty. Follow the indications of the
“ROUTINE
MAINTENANCE”
paragraph.
Suction of air. Check the integrity of the suction circuit.
Not enough water supply or too
much priming depth.
Make sure the tap is completely open
and that the water mains flow or
priming depth are in conformity with
the indications of the “SPECIFICATIONS
AND TECHNICAL DATA"
paragraph.
The machine fails
to reach maximum
pressure.
Regulation valve set at a lower
value than the maximum one.
Turn the knob (6) clockwise.
Nozzle holder head (15) in
low-pressure mode
(Fig. 3 -
Position “a”)
.
Refer to Fig. 3 - Position “b”.
Worn nozzle. Replace the nozzle as indicated in the
“ROUTINE MAINTENANCE” paragraph.
Not enough water supply or too
much priming depth.
Make sure the tap is completely open
and that the water mains flow or
priming depth are in conformity with
the indications of the
“SPECIFICATIONS
AND TECHNICAL DATA"
paragraph.
Faulty operation of the backflow
preventer device (if any)
See relative instruction manual.
(continued on next page)