SQFlex Service Instructions

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5.5 Centrifugal pump and motor
5.5.1 Detaching pump from motor
1. Fix the motor in a vice.
Note: Tighten only on the area shown in fig. 19.
2. Unscrew the screws pos. 18a and remove them together with the cable guard pos. 18c.
3. Unscrew the screws pos. 18b and remove them (if any) together with the cable guard pos. 18.
4. If the motor is intact, the cable need not be removed. If the motor is defective, remove the nuts for the
end cover with socket and pull the end cover with cable and socket out of the motor.
5. Remove the nuts pos. 19a and lift the pump off the motor
6. Remove the spline protector pos. 24b and supporting ring pos. 24a from the pump shaft.
7. Remove the shaft end pos. 24 from the motor shaft.
8. Remove the connecting piece pos. 14a from the motor by means of the pipe wrench M
. Hold the motor
using the open-end spanner G
.
5.5.2 Fitting pump to motor
1. Fill the motor with liquid, see Filling of motor liquid on page 43
.
2. Screw the shaft end pos. 24 on to the motor shaft and push it home.
Adjust the height to 88.15 mm ±0.2 mm by means of the measuring tem-
plate H
, see fig. 21.
3. Tighten the nut to the correct torque, see 5.3. Check that the height is
still 88.15 mm ±0.2 mm.
4. Fit the supporting ring pos. 24a and the spline protector pos. 24b.
5. Fit the connecting piece pos. 14a and tighten using the pipe wrench M
.
TM02 5770 3902
Fig. 21.
6. Fit the pump to the motor. The cable recesses in the suction interconnector pos. 14 and the connecting
piece pos. 14a must be next to each other. Fit the four nuts pos. 19a and tighten diagonally to the cor-
rect torque, see 5.3
.
7. Push the end cover with cable into the motor if it has been removed. Fit and tighten the nuts, see 5.3
using the socket for hexagon head screws O
, the adapter for torque screwdriver R and the torque
screwdriver Q
.
8. Fit the cable guard pos. 18c and secure it with screws pos. 18a.
9. Fit the cable guard pos. 18 and secure with screws pos. 18b ( 25 SQF).
10.Test the pump performance using a CU 200 control unit, if available. See section 5.9 Testing the pump
by means of CU 200 SQFlex control unit on page 52.
11. Install the pump, see section 2. Start-up on page 22
.
sqflex_SI_US_WG.book Page 48 Thursday, October 1, 2009 3:27 PM