Removing The Motor; Removing The Motor Stool And The Flange; Assembling The Product; Fitting The Motor Stool And The Flange - Grundfos SCALA1 SI Service Instructions Manual

4.13 Removing the motor

Note that the motor stool is on the outer end of the motor
and the flange is on the inner end of the motor.
1. Loosen and remove the hex screws (152) that hold the motor
stool (156b) to the outer end of the motor (150) using a size 10
hex key.
Loosening and removing the hex screws (152)
2. Place the hex key on one of the screw heads (152) that hold
the motor stool (156b) to the motor (150) and pull it out.
3. Apply pressure to pull out the motor stool and the motor.
4. The motor comes off together with the motor stool (front) and
the flange (rear).
5. Make sure you do not break the connection pin on the back of
the motor.

4.14 Removing the motor stool and the flange

1. Mark the position of the motor in the flange before removing
the hex screws (206).
2. Loosen and remove the hex screws (206) that hold the flange
(156a) to the outer motor stool (156b).
3. Remove the motor from the motor stool.
4. Remove the O-ring (150b).

5. Assembling the product

5.1 Fitting the motor stool and the flange

1. Place the O-ring (150b) in the motor stool (156b).
2. Mount the motor (150) in the motor stool (156b).
3. Align the motor with the flange according to the positions that
were marked while dismantling the pump.
4. Attach the flange (156a) to the motor stool (156b).
You can hold the shaft in a vice while you are
attaching the flange.
5. Tighten the hex screws (206) in the flange that secure the
motor (150) in the motor stool. Use a maximum torque of
2.6-3.2 Nm.
6. Place the O-ring (52) on the outer end of the motor (150).
7. Place the O-ring (53) on the motor stool (156b).

5.2 Fitting the motor

1. Insert the motor into pump body.
Inserting the assembled motor
Do not damage the connection pin.
2. Tighten the hex screws (152) that hold the motor in the pump
body. Use a maximum torque of 2.6-3.8 Nm.
3. Make sure that the connection pin (181c) can be inserted in the
motor part before proceeding.
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