Fristam Pumps FKL 15, Original Instructions Manual, Page: 16 / 40

/ / FKL PUMP SERIES / / /
16
Procedure
1. Turn on the motor and let it run until the normal operating
temperature is reached.
2. Turn off the motor and prevent it from being able to be
turned on accidentally.
3. Place a suitable oil collection container under the screw plug
(22) .
CAUTION
Danger of burning from hot oil.
► Wear heat- and oil-resistant gloves.
4. Loosen the bleed screw (21) .
5. Loosen and remove the screw plug (22) .
6. Drain the oil completely and dispose of oil in accordance
with local regulations.
7. Clean the bleed screw and the seals.
8. Install the screw plug and the bleed screw with the corre-
sponding seals.
9. Fill with new oil, monitoring the oil level on the oil level
sight glass (23) in the process.
10.6 Lubrication of Motor Bearings
► Lubricate the motor bearings in accordance with the gear
motor manufacturer's specifications. Please refer to the sup-
plier documentation in the attached documents.
10.7 Shaft Seal Replacement
Replace the shaft seal if:
– Pumping medium or sealing or quenching liquid flows out
of the pump on the atmosphere side.
– Sealing or quenching liquid leaks into the pumping medi-
um.
Procedure
1. Remove the pump casing;

see Chapter 10.8, "Pump Casing Removal," page 16 .
2. Replace the shaft seal;

see Chapter 10.9.1, "Mounting of the Shaft Seals," page 19 .
► Preassemble the pump casing.
► Mount the shaft seal.
3. Mount the pump casing.
4. Mount the rotors.
5. Attach the pump cover.
The exact procedure is described in the following sections.
10.8 Pump Casing 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.
Procedure pump size 15-580
Fig. 17 Detachment of pump cover
21 Bleed screw
22 Screw plug
23 Oil level sight glass
Pump Size Expected
Oil Volume [l]
Oil
Horizontal Ori-
entation of
Pipe Connec-
tions Vertical Orien-
tation of Pipe
Connections
FKL 15 0.47 0.47
SAE 15W40
FKL 20 0.47 0.47
FKL 25 0.7 0.7
FKL 50 0.95 0.95
FKL 75 3.8 3.8
FKL 150 4.7 4.7
FKL 205 4.7 4.7
FKL 250 5.7 5.7
FKL 400 8 8.0
FKL 580 12 12
FKL 600 18.0 18.0
Table 3 Oil volumes for model FKL
26
24
27
25