Marco 164 660 15, Instructions For Use Manual

Page: 16 / 24

ENG
16
© S.p.A.
TROUBLESHOOTING
WHY THE PUMP WILL NOT PRIME ITSELF?
CHECK POINTS IF THE PUMP HAS STOPPED OR WILL NOT START
GOOD PRACTICES ENSURING A WELL FUNCTIONING PUMP
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Check the effectiveness of the battery power supply (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 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 2500
hours under normal operating conditions. Stoppages are possible due to brush
wear and tear after such a time period.
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The pump is fitted at an excessive height above the fluid level
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
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 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 Aquastop)
Presence of liquid loops in the outlet tube
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Dirty bypass valve (VP45 series)
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.