English (GB)
12
Lubrication:
The bearings of motors up to 11 kW are greased for
life and require no lubrication.
The bearings of motors of 11 kW and up must be
greased in accordance with the indications on the
motor nameplate.
The motor should be lubricated with a lithium-based
grease meeting the following specifications:
• NLGI grade 2 or 3.
• Viscosity of basic oil: 70 to 150 cSt at 40 °C
(~ +104 °F).
• Temperature range: –30 °C (~ –22 °F) to 140 °C
(~ +284 °F) during continuous operation.
8.3 Service
If Grundfos is requested to service the pump,
Grundfos must be contacted with details about the
pumped liquid, etc. before the pump is returned for
service. Otherwise Grundfos can refuse to accept
the pump for service.
Possible costs of returning the pump are paid by
the customer.
8.4 Shaft adjustment
If the motor has been removed during installation or
for repair of the pump, the pump shaft must be
adjusted after the motor has been replaced.
8.4.1 Pumps with two-part coupling
Pumps Series 100 and 200
Make sure that the shaft pin is fitted in the pump
shaft.
Adjust the pump shaft as follows:
1. Remove the coupling guards using a screwdriver.
2. Fit the hexagon socket head screws in the
coupling and leave loose.
3. Raise the coupling and the pump shaft as far as
possible (towards the motor) with a screwdriver
or a similar tool so that the pump and motor
shafts touch each other. See fig. 14.
Fig. 14 Raising the coupling and the pump shaft
4. Tighten the hexagon socket head screws in the
coupling to 5 Nm (0.5 kpm).
5. Check that the gaps either side of the coupling
halves are equal.
6. Tighten the screws two and two (one side at a
time) to the torque stated below. See fig. 15.
7. Fit the coupling guards.
Fig. 15 Tightening the screws
8.4.2 Pumps with integral shaft/coupling
For pumps with integral shaft/coupling, it is advisable
not to remove the motor. If the motor has been
removed, it is necessary to remove the motor stool in
order to refit the motor correctly. Otherwise the shaft
seal may be damaged.
8.5 Blanking flanges
For twin-head pumps, a blanking flange with a pump
housing gasket is available. See fig. 16.
Fig. 16 Fitting the blanking flange
If one pump requires service, the blanking flange is
fitted to allow the other pump to continue operating.
Warning
If the pump has been used for a liquid
which is injurious to health or toxic, the
pump will be classified as
contaminated.
TM00 6415 3695
Hexagon socket head
screw
Torque
M6 x 20 13 Nm (1.3 kpm)
M8 x 25 31 Nm (3.1 kpm)
TM00 6416 3695 TM00 6360 3495
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