Installing The Mechanical Seal - KSB Amacan P 500-270 Installation & Operating Manual

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7 Servicing/Maintenance
Table 20: Symbols key
Symbol Description
Always secure screwed connections marked with this symbol with
L
243
Loctite 243 .
ü A new O-ring has been inserted into the groove of bearing housing 350.02.
1. Attach lifting tackle to bail 571, lift up motor housing cover 812 and lower it
down onto bearing housing 350.02 until only a gap remains which allows work
to continue.
2. Connect the control cable to the terminal strip as indicated.
3. Connect the power cable cores to terminal board 835 with disc 550.23, circlip
932.23 and nuts in accordance with the wiring diagram.
4. Fasten the earth conductor (conductor marking green/yellow) of the power
cable to bearing housing 350.02 with bolt 901.20 and spring washer 932.20.
5. Tie the control and power cables together with cable ties.
6. Slowly lower motor housing cover 812 onto motor housing 811. Align the anti-
rotation device of the bearing housing with the recess in the motor housing
cover.
7. Fasten motor housing cover 812 to motor housing 811 or motor unit 80-1 with
hexagon socket head cap screws 914.03. Secure the screwed connection with
Loctite 243.
Observe the tightening torque! (ð Section 7.8, Page 75)
8. Prepare the motor for the leak test. Undo bolts 901.26 at bail 571 to gain access
to the screw plugs for the leak test.
9. Perform the leak test. (ð Section 7.6.7.2, Page 74)
10. Fasten bail 571 with hexagon head bolts 901.26.
Observe the tightening torque. (ð Section 7.8, Page 75)
11. Insert the power and control cables with cable protectors 81-97 into cover plate
82-11 or 68-3.02.
12. Fasten the cover plate to the bail.

7.6.4 Installing the mechanical seal

Observe the following to ensure trouble-free operation of the mechanical seal:
▪ Only remove the protective wrapping of the contact faces immediately before
assembly takes place.
▪ The shaft surface must be 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 or the O-rings with soapy water (not oil).
▪ Cover any grooves in the shaft into which the O-rings could slide with suitable
means or assembly aids.
▪ To prevent any damage to the rubber bellows, place a thin foil (of approximately
0.1 to 0.3 mm thickness) around the free shaft stub.
Slide the rotating assembly over the foil into its installation position.
Then remove the foil.
Amacan P