21
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 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
bearing!
Re-assembly of the motor unit into the pump casing:
First turn the 8 tapping screws (900) to the left until reaching the cut thread by
latching, tighten only afterwards. Please make sure that the screws are not tigh-
tened too strong (tightening moment 7 Nm).
Do not use force!
7.6
If there is danger of freezing, the pump must be drained ahead of time. For this
purpose open the drain plug (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 medium
1)
seep through
once in a while, especially during the break-in period. Depending on the
concentration of the transported medium and the duration of operation said
mechanical seal may become leaky after some time. If the liquid penetrates
continuously, replace the complete mechanical 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.
CAUTION
1)
Brine for wet salt road clearance
