Speck pumpen BADU 43 Instructions De Montage Et D'utilisation page 18

7. Maintenance / Repair
CAUTION !
With series BADU FAC 43 and BADU FAG 43 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 basket with BADU FAC 43 and FAG 43:
1. Switch off pump
2. Close all shutoff valves
3. Open lid (160). If a manual opening is not possible with the BADU FAC 43
series, use the spanner supplied. Remove strainer basket (143), clean it and
replace it. Close lid (160) again (see items 6.1 and 6.5).
4. Open shutoff valves
5. Switch on 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
expert. 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
reactivate 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 the malfunction is to be determined by an expert (e.g. blocking of the
pump due to impurities or sand swept up while vacuuming the bottom of the
pool). Check current supply and fuses.
7.3
CAUTION !
Should the pump seize, it must be cleaned thoroughly. Repeated starting of a
blocked pump may cause damage to the motor. This will void the warranty!
7.4
CAUTION !
The leakage pipe on the underside between pump housing and motor must
never be clogged or sealed; otherwise the water in it will rise and the motor will
be damaged! Make sure that leakage cannot cause consequential damages! If
necessary, provide a suitable drip pan or drainage pipe.
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7.5
CAUTION !
Important hints for repair work
Dismantling:
Replacement of the mechanical seal:
Switch off the pump and disconnect it from the power supply. The exchange of
the mechanical seal has to be done by an expert. The mechanical seal
always has to be replaced completely (433). To do so, it is not necessary to
dismantle the complete pump, only the motor unit has to be removed from the
housing (107) by loosening the 8 hexagon socket screws (914.1).
Removing of the impeller:
Take off the impeller cap (260) with o-ring (412.6) by unscrewing it. Separate
the impeller (230) from the motor shaft (800) with a M 10 x 50 screw, by holding
the impeller by hand and turning in the screw.
Assembly:
Mounting of the new mechanical seal:
Slightly moisten the impeller hub (230) as well as the sleeve of the complete
lock ring with soap water. Press the mechanical seal (433) onto the impeller
hub regularly with both thumbs, press the lock ring into the gland housing
(161.1 or 161.2), respectively.
Re-assembly of the impeller:
Before re-assembly of the impeller, clean the surface of the lock ring and of the
mechanical seal with alcohol or with a clean paper tissue.
First screw in the impeller cap (260) with o-ring (412.6) into the impeller hub,
then press the impeller, with constant force at the impeller cap, until it catches.
For the reception of the counterforce, support the end of the motor shaft (centre
of the fan cowl), otherwise there would be too much pressure to the ball bea-
ring!
Re-assembly of the motor unit into the pump casing:
Tighten the 8 hexagon socket screws (914.1) crosswise, with a tightening mo-
ment of 3 Nm.
Do not use force!
7.6
CAUTION !
If there is danger of freezing, the pump must be drained ahead of time. With the
BADU 43 open one drain plug (903) and with the BADU FAC 43 and the BADU
FAG 43 open both drain plugs (903) and let the water drain from the pump.
Also drain all pipes subject to freezing.
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