Electrical Connections; Normal Maintenance - CEMO UP12-LO 12V Mode D'emploi

8.4 Electrical connections

The electrical installation of the pump must include
a protection fuse which is suitably rated as indi-
cated on the motor label.
i
WARRANTY EXPIRES
IF NO FUSE IS UTILIZED.
Their usage ensures a consistent reduction in
noise and vibration levels. Electrical cabling size
should depend on the distance between pump and
battery power supply (see Tab.1 EN). The use of
undersized cabling can cause overheating of the
electrical wiring and subsequent fire hazard. There
will also be a voltage drop at the motor terminals
with a consequent reduction in efficiency. The flow
rate value indicated on the motor label is obtained
with internal tube
diameter indicated on Tab.1 EN. Tubes with inferior
diameters will cause an increase in current with
potential risk of motor overheating.
9. TROUBLESHOOTING
9.1 CHECK POINTS IF THE PUMP HAS
STOPPED OR WILL NOT START
• Check the effectiveness of the battery power sup-
ply (voltage activity);
• Check if the fuse has blown;
• Check for any foreign matter present in the pump
body. To do this, disconnect the power supply and
unscrew the four fixing screws, remove the front
cover plate and inspect the chamber. Replace
the cover plate in the same initial position after
inspection;
• Avoid running the pump dry. Pumps found
defective that have run dry in the absence
of fluid are not covered by warranty;
• The average life span of the motor commutator
brushes is approximately 2500 hours under
normal operating conditions. Stoppages are
possible due to brush wear and tear after such
a time period.
All manuals and user guides at all-guides.com
9.2 WHY THE PUMP WILL NOT PRIME ITSELF?
• The pump is fitted at an excessive height above
the fluid level
• The pump has run dry for a too long period
• Long periods of inactivity. In this case it is advis-
able to add liquid directly into the chamber before
start-up
• Air leak at the suction pipe due to the following
reasons, possible cuts in the pipe, inadequate
hose clamps, malfunctioning of the filter due to
defective/worn seals or filter clogged
• Air leak at the front plate cover due to the follow-
ing reasons, loose fixing screws, poor effective-
ness of the seal
• Faulty electrical cable connections
• Presence of obstructions or restrictions in the
suction or delivery pipes or the use of special
devices(eg. automatic spray pistol or aqua-stop)
• Presence of liquid loops in the outlet tube
9.3 GOOD PRACTICES ENSURING
A WELL FUNCTIONING PUMP
If it is expected that the pump will not be used for
a period of at least 30 days, especially in the case
of usage with water, it is advisable to run fresh
water through it and to then loosen the front plate
screws. Upon re-use, run the pump briefly (a few
seconds) and tighten the screws again. Check
under conditions of maximum operating pressure
that the motor current value is within the motor
label specifications.

9.4 NORMAL MAINTENANCE

• Check frequently and keep the inlet filter clean.
• Check every month the chamber and keep clean
from any foreign matter.
• Check every month that electrical wiring is in
good condition.
9.5 INDICATORS THAT THE PUMP IS
FUNCTIONING CORRECTLY
• Temperature of body and motor frame is within
60 °C - 70 °C (140 °F - 158 °F);
• Regular flow and constant noise levels;
• Amp-draw within the limits indicated in the
technical details.
GB
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