Comet MTP LW 1/70 (220 В) [37/104] Skilled technicia

Comet MTP LW 1/70 (220 В) [37/104] Skilled technicia
37
TROUBLESHOOTING
WARNING
Also follow the instructions contained in the manual of the machine in which the motor pump is
integrated.
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 motor pump with the aid of the information
contained on the following table, contact a
Skilled Technician
.
PROBLEMS CAUSES REMEDIES
The electric motor fails
to start or stops during
operation.
One of the safety devices has triggered
of the plant to which the machine that
integrates the motor pump is connected
(fuse, dierential switch, etc.).
Reset the safety device.
If it triggers again, do not use the machine and
contact a
Skilled Technician
.
The thermal or ammeter cut-out has
triggered.
Follow the instructions in the
“SAFETY DEvICES
paragraph.
The power cable 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.
Delivery line closed (e.g., spray gun
closed).
Reset the delivery pressure (e.g., spray gun open).
“PRIMING” button (11) not pressed (only
MTP AXR and MTP AX Misting with Total
Stop)
Keep the button pressed for all the time required
for priming.
The pump fails to reach
max pressure.
Pressure adjustment knob (2) not
tightened enough.
Turn the knob clockwise until required pressure
is achieved.
Not enough water supply or priming
too deep.
Make sure the water supply ow rate or priming
depth is in compliance with the indications in the
“SPECIFICATIONS AND TEChNICAL DATA
paragraph.
Suction circuit blockages. Check the suction circuit (especially make sure the
suction lter is clean).
Unsuitable conditions of use (e.g., nozzle
worn, lance in low-pressure position, etc.)
Restore the correct conditions of use.
Irregular pressure and ow
rate (pulsating).
Air suction. Check the integrity of the suction circuit.
Suction lter dirty. Clean the lter.
Not enough water supply or priming
too deep.
Make sure the water supply ow rate or priming
depth is in compliance with the indications in the
“SPECIFICATIONS AND TEChNICAL DATA
paragraph.
The motor pump has not completed
priming.
Prime the pump according to the indications of the
“STANDARD OPERATION (hIGh PRESSURE)”
paragraph.
Clogged accessory (e.g. clogged nozzle) Restore the correct use of the accessory.
(continued on next page)
EN

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