Grundfos LC 221 Series, Installation And Operating Instructions Manual

Page: 28 / 832

English (GB)
28
7.3 Procedure for installation of lifting station
1. Check the scope of delivery.
For scope of delivery, see section 2. Scope of delivery .
2. Prepare the adjustable inlet on the back of MOG or MDG.
The turnable inlet disk has a DN 100 inlet and allows the inlet
height to be adjusted to any height between 180 and 315 mm
above floor level. The most common heights, 180, 250 and
315 mm, are marked beside the inlet. See fig. 19. An inlet disk
with a DN 150 inlet is available as an accessory. See fig. 20.
The screws around the outer ring of the inlet disk are not fully
tightened allowing the inlet disk to be turned. This will allow
the inlet to be adjusted to the desired inlet height.
When the desired inlet height has been set, tighten all screws.
All screws must be tightened to max. 9 Nm.
Fig. 19 DN 100 inlet disk, adjustable from 180 to 315 mm
above the floor to the middle of the inlet pipe
Fig. 20 Optional DN 150 inlet disk, adjustable from 207 to
279 mm above the floor to the middle of the inlet pipe
Fig. 21 Untightened screw in outer ring
Fig. 22 Plugging the main inlet.
3. Prepare optional inlets by cutting out the desired one.
Use cup drills
∅
150 for DN 150,
∅
100 for DN100 and
∅
43 for
DN 50 inlets. The cutting line is recessed. To avoid sharp
cutting edges, the holes must be deburred. The socket seals
are provided with collars.
Note
Before connecting Multilift MOG or MDG,
consider that when turning the inlet disk to fit to
the height of the inlet pipe, the lifting station and
the discharge will move sideways accordingly
(max. 72.5 mm). See fig. 19.
TM0
5
035
1
2
8
11
T
M
05
16
69
34
11
T
M
05
03
3
6
10
11
Caution
Multilift MOG and MDG lifting stations are
supplied with loose screws in the outer ring of
the turnable inlet disk. See fig. 21. Check and
tighten all screws to max. tightening torque of
9 Nm before connecting the inlet pipe.
Note
If the main inlet is not to be used it can easily be
plugged using a standard DN 100 pipe plug
fastened with three screws and washers.
See fig. 22.
Only the screws and washers are supplied with
the lifting station. The pipe plug must be bought
separately.
TM0
5
0
3
2
9
1
0
11
/ TM
05
03
52
10
11