Edwards A705-41-000, Инструкция по эксплуатации

Страница: 71 / 82

© Edwards Limited 2011. All rights reserved. Page 65
Edwards and the Edwards logo are trademarks of Edwards Limited.
Maintenance
A705-40-880 Issue B
11. If your pump has a coolant jacket thermal snap-switch fitted:

Undo the adaptor fitting (9) then remove the thermal snap-switch (10) and support bracket from your pump:
if necessary, refer to the thermal snap-switch instruction manual.

Remove the adaptor fitting from the pump.

Fit a suitable blanking plug to the snap-switch port on the pump.
12. Refer to Figure 13 . Remove the heat exchanger:

Undo the fitting nuts (2, 9) and disconnect the cooling-water pipes from the top and bottom end caps (11, 6)
of the heat exchanger.

Undo and remove the eight bolts which secure the heat exchanger (4), then remove the heat exchanger from
the pump.

Fit suitable blanking plugs to the coolant ports on the pump.
13. Refer to Figure 17 . Attach suitable lifting equipment to the lifting bolts (1) on the pump.
14. Undo and remove the four bolts (4) which secure the service module (pump body, 8) to the two frame cross-
members (5).
15. Use your lifting equipment to remove the service module (pump body, 8) from the frame.
16. Return the service module to Edwards, or dispose of the service module (refer to Section 6.2 ).
5.16.4 Inspect the components removed from the service module
Inspect the O-ring sealing surface on the inlet adaptor, on the exhaust manifold and the pressure relief valve for
damage and scratches.
5.16.5 Fit the new service module
Use the procedure given below to fit the new service module, and to fit the components removed in Section 5.16.3 .
When you fit the new service module, do not refit used O-rings; you must use the new O-rings supplied with the
replacement service module (refer to
Table 16 ).
1. Refer to Figure 17 . Attach suitable lifting equipment to the four lifting bolts (1) on the new service module.
2. Use your lifting equipment to lower the service new module (8) into the frame, so that the bolt holes in the
service module align with the bolt holes in the two frame cross-members (5).
3. Fit the four bolts (4) to secure the service module (pump body, 8) to the two frame cross-members (5). Tighten
the bolts.
WARNING
If the EDP pump is part of an ATEX system, you must inspect the components in accordance with
the following procedure, and replace any components that are damaged, or do not meet the
inspection criteria.
WARNING
Use suitable lifting equipment to move the service module (pump body). If you do not, you can
injure yourself or damage the pump. Refer to
Section 2.3 for the mass of the service module.