7 Servicing/Maintenance
47 of 72
Amarex N
NOTE
The motors of explosion-proof pump sets are supplied in "flameproof enclosure"
type of protection. Any work on the motor section which may affect explosion
protection, such as re-winding and machining repairs, must be inspected and
approved by an approved expert or performed by the motor manufacturers. No
modifications must be made to the internal configuration of the motor space.
Repair work at the flameproof joints must only be performed in accordance with
the manufacturer's instructions. Repair to the values in tables 1 and 2 of EN 60079-1
is not permitted.
When dismantling the motor section and the power cables make sure that the cores/
terminals are clearly marked for future reassembly.
1.
Push primary ring 433.02 along the shaft.
2.
Undo and remove screws 914.02.
3.
Remove intermediate casing 113.
4.
Push mating ring 433.02 out of intermediate casing 113.
5.
Remove circlip 932.03.
6.
Remove primary ring 433.01.
7.
Pull off mating ring holder 476.
8.
Take the mating ring out of mating ring holder 476.
9.
Take O-ring 412.02 out of mating ring holder 476.
10.
Take circlip 932.04 out of bearing bracket housing 355.
11.
Remove bearing bracket housing 355.
12.
Pull out rotor 818.
13.
Remove circlip 932.01.
14.
Remove circlip 932.02.
15.
Pull off the two rolling element bearings 321.
7.4.4.2 Removing the mechanical seal and motor part (version UL)
ü
1.
Undo and remove screws 914.02 at bearing bracket 330.
2.
Remove rotor unit 818 from bearing bracket 330.
3.
Push mating ring 433.02 out of bearing bracket 330.
4.
Remove circlip 932.02.
5.
Take bearing bracket 330 off rotor 818.
6.
Remove circlip 932.03.
7.
Remove primary ring 433.01.
8.
Pull off mating ring holder 476.
9.
Take mating ring 433.01 out of mating ring holder 476.
10.
Remove circlip 932.01.
11.
Extract rolling element bearing 321.02.
12.
Extract rolling element bearing 321.01.
Summary of Contents for Amarex N
Page 62: ...9 Related Documents 62 of 72 Amarex N 9 2 2 Version ULG Fig 33 Wiring diagram for version ULG...
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