Setup and connection
5.3.4
Installing auxiliary pipes (if available)
Follow the manufacturers’ specifications for any available
auxiliary systems.
1. Connect the auxiliary pipes to the auxiliary connections so
that they are stress-free and do not leak (→ setup drawing).
2. To avoid air pockets, run the pipes with a continuous slope
up to the pump.
5.4
Installing the motor
Only necessary if the pump aggregate is assembled on site
For motors larger than size 225, mount support feet.
WARNING
Risk of injury due to overturning motor!
Secure the motor to prevent overturning before working on
the stub shaft.
NOTE
Damage due to incorrect installation!
Ensure that no excessive axial forces are applied to the
pump shaft.
Ensure that the stub shaft rests flush against the collar of
the motor shaft.
Stub shaft free from oil and grease
The shaft key is not required for installation up to a stub
shaft bore hole diameter of 55 mm.
Stub shaft hole diameter (→ 3.1 Labels, Page 10).
4
A
B
C
5
Fig. 9
Widening the stub shaft
A Version for stub shaft, hole diameter up to 55 mm
B Version for stub shaft, hole diameter up to
55 mm and clamping ring
C Version for stub shaft, hole diameter starting from 60 mm
1
Cheese head screw
2
Stub shaft
3
Shaft key groove of the motor shaft
4
Clamping ring
5
Key (from stub shaft bore hole diameter 60 mm)
1. Observe the following during the installation:
–
Adhere
to
the
prescribed
tightening
torques
(→ 9.2.4 Tightening torques, Page 40).
2. Remove the retaining clamp for the stub shaft from the
motor bell housing (341.01):
–
To
do
this,
undo
the
bolts/nuts
(901.10).
(→ 9.1 Sectional drawings, Page 30).
3. Undo the hexagon head bolts (901.07) and remove the
washers (554.07).
4. Remove one half of the guard sheet (686.01) from the
motor bell housing (341.01).
The Allen key required to undo the cheese head screw
(914.06) is inserted in one of the two cast-in recesses in
the motor bell housing.
5. Undo the cheese head screw (914.06) on the stub shaft
(220.xx) and unscrew it completely (→ 9.1 Sectional draw-
ings, Page 30).
Tighten the jack screw with a screwdriver without applying
any excessive force.
6. Widening the stub shaft (220.xx):
–
Screw the M10 x 40 or M12 x 40 jack screw (not
included in the scope of delivery) into the stub shaft.
18
NI series
BA-2021.06 en-US
550 113 – 146-900/E