Pipe Connection - Grundfos PUST 04-10 Serie Manual De Instrucciones

8.2 Pipe connection

Holes for inlet pipe, electrical connection and venting are to be
drilled on site.
Placement of inlet and outlet pipe connections
Caution
must be carried out in accordance with local
regulations.
Mark the pit where the inlet is to be. Drill the marked spot with a
hole saw. Remove all burrs from the hole. The hole saw is
available as an accessory. See table below.
LM50/40 40 96230763
LM50/50 50 96230753
LM50/63 63 96571523
LM50/75 75 96571527
LM50/90 90 96571528
L965/110 110 91716040
L965/160 160 91713754
LM100/200 200 91712032
Pilot drill
8.2.1 PUST04 - PUST10
We recommend that
you drill the inlet in
the cylindrical,
smooth part
Fig. 21 Drilling the inlet, ∅400-1000
12
51 - 2/+ 1 96571532
60 - 2/+ 1 96571533
75 - 2/+ 1 96571534
86 - 2/+ 1 96571535
102 - 2/+ 1 96571536
127 - 0/+ 2 91713756
177 - 0/+ 2 91713755
212 - 2/+ 1 91712025
91712026
8.2.2 PS.R.17
The hole saw must have a cup depth of minimum
Note
90 mm.
The inlet must not be drilled in the pit close to
Caution
pipes, float switches or other parts of the pit
installation.
Drilling from the outside
If the hole diameter is greater than 150 mm or the hole is to be
drilled into a rib, drill in the centre of a rib. See fig. 22.
Fig. 22 Drilling from the outside
Drilling from the inside
Due to the circular pit shape, the pilot drill must extend beyond
the cutting edge of the hole saw by at least 23 mm. The position
of the hole is not an issue. See fig. 23.
Fig. 23 Drilling from the inside