Mounting The Pump Set; Alignment - Grundfos Fire NKF Montage- Und Betriebsanleitung

10.4 Mounting the pump set

Warning
Lift the pump set by means of the lifting eyes of
the base frame. Never use the lifting eyes of the
individual components.
Use only suitable lifting equipment in proper
condition. See also the weight specifications on
the nameplate.
The pump set must only be transported when the
cabinet door is locked.
Warning
The permissible floor loading must not be
exceeded. The weight of the pump set is stated
on the nameplate
Place the pump set on the foundation or an even floor and secure
it with anchor bolts. The entire base frame must be supported.
See fig. 13 and fig. 14. In addition, we recommend fitting vibration
dampers under the pump set. See section 10.3 Vibration
dampening.
Fig. 13 Correct installation
Fig. 14 Incorrect installation
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10.5 Alignment

When a complete pump set comes pre-assembled from the
factory, the coupling has been accurately aligned by means of
shims inserted under the pump and engine.
During transport and installation, the pump/driver alignment may
have been affected. Therefore the alignment must always be
checked when the pump set has been installed.
Check the final alignment when the pump has obtained its
operating temperature under normal operating conditions.
10.5.1 Pump set with electric motor
Pump sets with an electric motor are equipped with a standard or
spacer coupling.
The gap width S2 and torque required for the alignment are
shown in the following table. S1 must not be larger than 0.2 mm.
A slightly larger gap is acceptable as the pump set is not intended
for continuous operation.
Gap width S2
Warning
After checking or adjusting the alignment,
fit the coupling guard.
Careful alignment is important for a long service
life of the coupling. This is particularly important
Caution
at increased engine speed. Follow the
instructions of the coupling manufacturer.
The alignment should be made before connecting
the pipes; if not, it may not be possible to move
Note
the pump, and it will be difficult to move the
driver.
S1
Fig. 15 Aligning pump and drive unit
Gap width S2 [mm]
Outside
coupling
Standard coupling
diameter
[mm]
Setpoint Tolerance
80 -
95 -
110 -
125 4 0/-1
140 4 0/-1
160 4 0/-1
200 4 0/-1
225 4 0/-1
250 4 0/-1
The gap dimension S2 should be measured
across the entire scope of the coupling (360 °).
The largest and smallest value measured should
Caution
not differ by more than 0.2 mm. A slightly higher
difference is acceptable as the pump set is not
intended for continuous operation.
90 °
90 °
90 °
90 °
S2
Spacer coupling
Setpoint Tolerance
- 4 0/-1
- 4 0/-1
- 4 0/-1
4 0/-1
4 0/-1
4 0/-1
6 0/-1
6 0/-1
8 0/-1
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