Cleaning The Strainer - Procopi Belstar 50 Instructions De Montage Et D'utilisation

6.2
CAUTION
Make sure pump and motor turns freely, especially after extended periods of
downtime. To do this put a screwdriver into the slot at the fan end and turn it by
hand in the direction of rotation (see directional arrow). If necessary remove the
fan cover and turn the fan by hand. Make sure the mechanical seal doesn't
leak.
6.3
CAUTION
Never operate the pump without the strainer basket (143), otherwise the pump
may get clogged and blocked.
6.4
CAUTION
Please make sure that the installed shutoff valves in the suction and pressure
lines are completely open during operation, since the pump must never be allo-
wed to run with shutoff valves closed!
7. Maintenance / Repair
CAUTION
The strainer basket (143) must be periodically emptied. A full or dirty strainer
will impair the pump's flow rate and the filtration.

7.1 Cleaning the strainer:

1. Shut down pump.
2. Close shutoff valves.
3. Open ring nut (160.2), see par. 6.1, lift transparent lid (160.1). Remove strai-
ner basket (143), clean and replace it. Put transparent lid (160.1) back in
place and tighten ring nut (160.2), see par. 6.1 and 6.3.
4. Open shutoff valves.
5. Restart pump.
7.2
CAUTION
When the pump is shut off by the thermal security in the windings or by the
motor overload switch, the power supply must be cut off and one must check
whether the pump can still turn unobstructed. To do so try rotating the motor
shaft at the fan side with a screwdriver or other tool that will do. If rotating the
motor shaft requires considerable force, the pump must be checked by an ex-
pert. If it rotates easily, remove your tool and restore the power supply. As soon
as the motor has cooled down the thermal security in the windings will reactiva-
te itself, respectively the motor overload switch can be pressed down. This only
may happen one more time. If the pump still shuts off because of the thermal
security in the windings or because of the motor overload switch the cause of
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