Assembly Of Columns; Assembly Of The Hydraulic; Assembly Of Hydraulic; Assembly Of Discharge Pipe - Wilo MMI50V Instrucciones De Instalación Y Funcionamiento

- Drill a 6 mm hole through the bushing using the lubrication hole in
the bearing housing as a drilling guide.
9.3.9

ASSEMBLY OF COLUMNS :

- Fit columns using the bearing housing as a centering ring.
Check that bearing housing is correctly positioned according
lubrication pipe.
9.3.10 ASSEMBLY OF THE HYDR AULIC
9.3.10.1 LOWER BEARING EXCEPT SILICON CARBIDE
ONES
- Press the bushing [3313] into the back cover.
Use a bronze drift (OD drift > OD bushing) and check the flange
contact surface is correct.
9.3.11

ASSEMBLY OF HYDRAULIC

- Press the impeller key [6710] in the shaft [2100].
- Slide the impeller [2200] onto the shaft [2100].
- Add the washer/lock washer [2905].
- Add the circlips [6544A]
- Put a new gasket [4596] in pump casing.
- Fasten the casing [1150].
9.3.12 ASSEMBLY OF DISCHARG E PIPE
- Install a new gasket [4590A] between discharge pipe [9200] and
casing.
- Tighten bolts [6581].

9.4 MOTOR

In order to ensure an optimum lifetime of the integrated motor a
minimum maintenance is necessary : clean cooling fins regularly, check
coupling alignment (if any), check cable gland tightening, ...
Ball bearing lifetime depends on axial and radial forces applied on motor
shaft therefore on the pump design (close-coupled pump, pump sets
with elastic coupling, ...).
Motor can be fitted with lifetime lubricated ball bearings (identified ZZ
or 2Z) or greased. Greasing nipples are located at the ball bearings and
re-greasing quantities are indicated on motor nameplate.
See motor instructions manual to find data about maintenance work to
be performed.

9.5 TIGHTENING TORQUES

Tightening torques depend on the material used in the assembly and on
the type of lubricant that is used.
Refer to applicable regulation to know the tightening torques for
the fastening of cast iron or stainless steel made flanges. The values
given below should be only indicative. If real tightening torques are
required please ask our technical services.
Threads
M6
M8
M10
M12
M16
M20
M24
M30
M36
Stainless steel bolts : apply anti-fretting paste before assembly.
Tightening torque for back cover fastening nuts 92.00 :
Thread
M12
M16
ENGLISH
Tightening torques
8,5 Nm
12 Nm
25 Nm
40 Nm
90 Nm
175 Nm
300 Nm
500 Nm
700 Nm
Tightening torque
65 Nm
130 Nm
27