7.5.2 Reassembling the pump section
7.5.2.1 Installing the mechanical seal
Observe the following points to ensure trouble-free operation of the mechanical
seal:
▪
Make sure the surface of the shaft is absolutely clean and undamaged.
▪
Immediately before installing the mechanical seal, wet the contact faces with a
drop of oil.
▪
For easier installation of bellows-type mechanical seals, wet the inside diameter
of the bellows with soapy water (not oil).
▪
To prevent any damage to the rubber bellows, place a thin foil (thickness
approximately 0.1 to 0.3 mm) around the free shaft stub.
Slip the rotating assembly over the foil into its installation position.
Then remove the foil.
✓
The shaft and rolling element bearings have been properly installed in the
motor.
1. Push drive-end mechanical seal 433.01 on shaft 210 and secure it with taper lock
ring 515 or circlip 932.03.
2. Insert O-rings 412.04/412.35 and 412.15/412.11 into discharge cover 163, and
press them into bearing bracket 330 as far as they will go.
3. Push pump-end mechanical seal 433.02 onto shaft 210.
For special mechanical seals with covered spring, tighten the socket head cap screw
at the rotating assembly before fitting the impeller. Observe installation dimension
"A".
Table 20: Installation dimension A
Pump size
Installation dimension "A"
[mm]
All sizes
29
7.5.2.2 Fitting the impeller
7.5.2.2.1 Fitting impeller type S and cutter
NOTE
For bearing brackets with tapered fit make sure that the tapered fit of impeller and shaft
is undamaged and installed free from grease.
1. Slide impeller 230 onto the shaft end
2. Insert grooved pin 561 into impeller 230.
3. Place impeller body 23-7 on the centring hub.
4. Insert impeller screw 914.04 and tighten it to a torque of 30 Nm.
5. Fasten ring 500 in suction cover 162 with screws 914.06.
A
Fig. 25: Installation
dimension "A"
7 Servicing/Maintenance
Amarex® N
45 of 66
Goodnal STP ST041 Biological Treatment (KSB WAS PUMP 1 & 2 PU-0530-010 OM Instructions) Vendor Manual
Q-Pulse Id VM381
Active 29/10/2013
Page 47 of 76
