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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.
With types I-Star 10 to 22 assembly is effected in reverse order, see dismant-
ling.
CAUTION: With three-phase current motors first leave the pumps for 24 hours
at ambient temperature without using it in order to let the glue connection (see
dismantling) impeller/shaft achieve its final consistency.
Pressing on the impeller, I-Star 26 and 30:
Screw a bolt M 10 approximately 10 mm into the impeller hub. While using
even pressure on the bolt, slide the impeller down on the motor shaft until the
limit stop is reached. To prevent damage to the motor bearing, support the end
of the motor shaft (centre of the fan cover) otherwise there would be too much
pressure to the ball bearing! Next remove the M 10 bolt and screw the impeller
cap (260) with the o-ring (412.6) into the impeller hub.
Re-assembly of the motor unit into the pump casing:
First turn the tapping screws (900) to the left until reaching the cut thread by lat-
ching, tighten only afterwards. Please make sure that the screws are not tighte-
ned 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 (582) 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 seep through
once in a while, especially during the break-in period. Depending on the con-
centration of the transported medium and the duration of operation said mecha-
nical seal may become leaky after some time. If the liquid penetrates continu-
ously, 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.
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 par 6.
CAUTION
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