Marco 164 020 12 Mode D'emploi page 10

E N G
To ensure the correct directional flow of the fluid as indicated by the arrow on the top plate,
it is necessary to connect the positive pole
motor end-cap and the negative pole
be made using adequate terminal blocks and connectors ensuring a tight fitment of the
electrical cables. Bad wiring can cause power losses and/or overheating of the cabling
itself.
WARNING: it is the responsibility of the installation technician to ensure a correctly
designed circuit installation fitted according to regulations.
Environmental risks must be taken into account with the installation.
I
CHECK POINTS IF THE PUMP HAS STOPPED OR WILL NOT START
I-1
- Check the effectiveness of the battery power supply (voltage activity);
- Check if the fuse has blown;
- Check for any foreign matter present in-between the pump gear drives. To do this,
disconnect the power supply and unscrew the four fixing screws, remove the pump front
cover plate and inspect the pump chamber. Replace the cover plate in the same initial
position after inspection;
- Avoid running the pump dry for more than a few minutes. 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 2
under normal operating conditions. Stoppages are possible due to brush wear and tear
after such a time period.
I-2
- The pump is fitted at a height greater than
- The pump has run dry for too long a period;
- Long periods of inactivity. In this case it is advisable to add liquid directly into the pump
chamber before start-up. It is also advisable to add, before running the pump, a drop of
lubricating oil inside the pump only;
- 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 pump front plate cover due to the following reasons:
loose fixing screws, poor effectiveness 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.
GOOD PRACTICES ENSURING A WELL FUNCTIONING PUMP
I-3
No particular maintenance is required if the pump is utilized for the transfer of diesel fluids.
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 fresh or salty water, it is advisable to run fresh water through the
pump and to then loosen the pump front plate screws.
( - )
TROUBLESHOOTING
WHY THE PUMP WILL NOT PRIME ITSELF?
©
( + ) of the battery supply to the red wire on the
to the black wire. Electrical
1,5 m above the fluid level
10
S.p.A.
connections must
500 hours
;