© Edwards Limited 2007. All rights reserved. Page 21
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Maintenance
A371-32-880 Issue C
5.5 Inspect and clean the inlet-filter
1. Refer to Figure 3. Unscrew the inlet adaptor (1) and remove the inlet-filter (2) and o-ring (3).
2. Wash the filter in a suitable cleaning solution. Allow the filter to dry.
3. Refit the o-ring (3), inlet-filter (2) and inlet adaptor (1).
Figure 3 – Inlet-filter removal and replacement
5.6 Clean or replace the gas-ballast o-ring
Note: The filter element (3) is retained in its seating with adhesive; do not try to remove it.
Refer to Figure 4.
1. Unscrew and remove the gas-ballast control (1).
2. Remove the o-ring (2) from the control.
3. Wash the o-ring in a suitable cleaning solution. Replace the o-ring if it is damaged.
4. Replace the o-ring carefully on its seat. Screw the gas-ballast control back into the pump, and reset to the
required position.
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