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Removing of the impeller:
The impeller of the BADU 93 is fitted onto the shaft. Unscrew the cap nut (922)
with o-ring (412.4). Remove the impeller (230) from the motor shaft.
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
(161.2), 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 put the impeller (230) onto the motor shaft until it catches. Then screw on
the cap nut (922) with o-ring (412.4), tightening moment 7 Nm.
Re-assembly of the motor unit into the pump casing:
Put the motor unit in the pump casing (101) and secure it using the 4 hexagon
nuts (920.1) and the 4 washers (554.1).
Do not use force!
7.6
ACHTUNG
If there is danger of freezing, the pump must be drained ahead of time. For this
purpose open the closure screw (903) in order to drain off all liquid. Also drain
all pipes subject to freezing.
8.
In Case of Malfunction
The sealing between the motor and the pump housing is done by means of a
mechanical seal (433). It is normal that a few drops of water seep through once
in a while, especially during the break-in period. Depending on the water quality
and the duration of operation said mechanical seal may become leaky after
some time. If the liquid penetrates continuously, replace the complete mechani-
cal seal (433) by a new one (see par. 7.5).
In case of malfunction we recommend contacting the pool builder of the unit
first.
If ball bearings must be replaced, bearings with C3 air and high-temperature
grease (approx. 180°C) are to be used!
When restarting the pump, refer to item 6.
Parts drawing see pages 30 und 31.
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