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8.3 Fitting the sleeve
1. Fold the sleeve and insert it into the hole (from the outside of
the pit).
2. Unfold the sleeve so that it lies evenly in the hole.
3. LM50/100 sleeves: Pull the sleeve outwards until its collar
touches the inside of the pit all around the hole.
L965 sleeves: Pull the sleeve outwards until its collar touches
the inside of the pit at the positions 3 and 9 o'clock.
See fig. 26.
4. Lubricate the inside of the sleeve with a water-based
lubricant.
5. Chamfer the pipe and press it home.
LM50/100 sleeves: Push the inlet pipe through the sleeve.
See fig. 24.
As it must be possible to pull the pump up
Note
through the pit, the inlet pipe must not project
beyond the sleeve by more than 5 cm.
Pit side
Max. 50 mm
Fig. 24 Pipe with LM50/100 sleeve, seen from side
L965 sleeves: Push the inlet pipe into the sleeve and against the
stop. See fig. 25.
Pit side
Fig. 25 Pipe with L965 sleeve, seen from side
Pit side
Fig. 26 Pipe with L965 sleeve, seen from top
8.4 Installation of pump(s)
Some versions come without the pump(s) installed.
For installation and startup of the pump, see the installation and
operating instructions for the pump.
Lower the pump carefully into the pit in order to
Caution
avoid damage to pump and pit.
8.5 Pipework with flange connections
If the pit is to be installed at a temperature below
0 °C, loosen all bolts of the flange and retighten
Note
them when the pit has been installed.
This will prevent stress in the pipes.
8.6 Fitting the chain
For pumps on auto coupling, we recommend that you fit the chain
in the foremost lifting eye of the lifting bracket. The number of
lifting eyes depends on the pump.
Fig. 27 Chain fitted to pump
Warning
The lifting equipment used for lifting the pump
must be rated for the weight of the pump,
approved and maintained according to local
regulations.
Warning
Grundfos supplied chains are marked with
maximum load and production date.
Maximum load must not be exceeded.
Maintenance according to local regulations.
We recommend that Grundfos supplied chains
and shackles must be checked minimum once
per year for cracks, corrosion or other
irregularities. If any defects are found, replace
the chain or shackles.
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