Comet CBM Series User Manual

42
TROUBLESHOOTING
WARNING
• Before doing any jobs, perform the operations described in the “STOP” paragraph.
• In the event of not being able to restore the correct operation of the machine with the aid of the information
contained on the following table, contact a
SKILLED TECHNICIAN .
PROBLEMS CAUSES REMEDIES
The combustion engine fails
to start or operation is not
smooth.
Refer to the combustion engine
manual.
Refer to the combustion engine manual.
Operating the switch, the
electric motor fails to start or
stops during operation.
One of the safety devices has
triggered of the plant to which the
machine (fuse, dierential switch,
etc.) is connected.
Reset the safety device.
If it triggers again, do not use the machine
and contact a
SKILLED TECHNICIAN.
The thermal or ampere cut-out
protection device has triggered.
Follow the instructions in the “SAFETY
DEVICES”
paragraph.
The power lead plug is not properly
tted.
Disconnect the plug from the socket and
t it back correctly.
The electric motor hums but
does not start.
The electrical system and/or the
extension are inadequate.
Follow the instructions in the
“CHECKING
AND CONNECTING UP TO THE POWER
SUPPLY”
paragraph.
The pump does not prime. Suction of air. Check the integrity of the suction circuit.
Regulation valve positioned under
pressure.
Reset the pressure by means of
the knob(29) (only MTPMC8 and
MTPMC18), or place the pump in
“BYPASS” with the lever (30).
Knob(42) of the filter with valve
missing or mounted badly.
Put the knob back in the lter and make
sure it is positioned correctly (refer to the
“CLEANING THE FILTERS” paragraph.
The pump fails to reach max
pressure.
Pressure adjustment knob (29) not
tightened enough.
Turn the knob clockwise until required
pressure is achieved.
The lever (30) is in
“BYPASS”
position.
Move the lever to “PRESS” position.
Suction circuit blockages. Check the suction circuit (especially make
sure the suction lter is clean).
Nozzle either worn or too big. Replace the nozzle (refer to the contents
of the
“OPERATION” paragraph.
Irregular pressure and ow rate
(pulsating).
Air suction. Check the integrity of the suction circuit.
Suction lter dirty. Clean the lter.
The motor pump has not completed
priming.
Prime the pump according to the
indications of the
“OPERATION”
paragraph.
(continued on next page)

Comet CBM Series Specifications

General

Brand	Comet
Model	CBM Series
Category	Control Unit
Language	English