Fristam Pumps FSP Series, Original Instructions Manual, Page: 17 / 36

17
4. Remove the outer race of the cylindrical roller bearing.
Note: All parts that are gray in the above figure remain on
the shaft.
5. Clean the surfaces of all parts and check for damage. Replace
if necessary.
6. Relubricate the cylindrical roller bearing (31) . We recom-
mended using: JAX Halo-Guard FG-2 bearing grease or alter-
natively a white NSF H1 grease. Alternatively, use an equiva-
lent brand of lubricant of similar quality and viscosity. See
Table 6 "Bearing grease amounts: model KF" .
7. Put the outer race back onto the shaft.
8. Place the guard plate and the bearing nut on the shaft, and
tighten the bearing nut.
9. Press the pump shaft with the bearing back into the lantern.
10. Mount the bearing cap (33) .
9.6 Motor Replacement
1. Turn off the motor and prevent it from being able to be
turned on accidentally.
2. Remove the pump head. See Chapter 9.8, "Pump Head Re-
moval" page 17 .
3. Take the lantern off of the motor.
4. Remove the shaft.
5. Replace the motor.
6. Mount the shaft and align. See Chapter 9.11, "Pump Shaft
Mounting and Alignment" page 26 .
7. Mount the lantern.
8. Only for flange connection: Check the clearance if necessary.
See Chapter 9.9, "Checking of the Clearances" page 18 .
9. Replace the mechanical seal and mount the pump head. See
Chapter 9.10, "Pump Head Attachment" page 19 .
IEC Standard Motor for Model L
1. Turn off the motor and prevent it from being able to be
turned on accidentally.
2. Remove the coupling guard.
3. Detach the motor from the base frame or the foundation.
4. Take the coupling parts off of the motor.
5. Dispose of the motor in an environmentally friendly manner.
See Chapter 2.6.5, "Disposal of Electrical and Electronic Scrap"
page 7 .
6. Mount the coupling parts on the replacement motor (pro-
ceed as described in Chapter 9.12, "Model L: Coupling Replace-
ment" page 26 to replace the coupling).
7. Place the replacement motor on the base frame or the foun-
dation.
8. Check the parallel and angular misalignment of the shafts.
Fig. 22 Parallel misalignment
Fig. 23 Angular misalignment
9. Minimize deviations from the angular and parallel misalign-
ment. Realign the shafts if necessary.
10. Screw the motor to the base frame or the foundation.
11. Mount the coupling guard.
9.7 Shaft Seal Replacement
The shaft seal must be replaced if:
– Pumping medium or sealing or quenching liquid flows out of
the pump on the atmosphere side.
– Sealing liquid leaks into the pumping medium.
1. Dismantle the pump head. See Chapter 9.8, "Pump Head Re-
moval" page 17 .
2. Replace the mechanical seal and mount the pump head. See
Chapter 9.10, "Pump Head Attachment" page 19 . Perform the
following tasks according to the given shaft seal:
– Preassemble the seals on the shaft.
– Preassemble the pump casing.
– Mount the pump casing on the lantern.
– Mount the mechanical seal.
– Mount the impeller.
– Screw on the pump cover.
9.8 Pump Head Removal
Preparation
1. Turn off the motor and prevent it from being able to be
turned on accidentally.
2. Close the valve in the discharge line.
3. Close the valve in the suction line.
4. For double shaft seal: Block off the sealing or quenching liq-
uid line.
5. Completely empty the pump.
6. Loosen the suction and discharge connections.
7. Take the pump out of the system.