Edwards CDP

© Edwards Limited 2008. All rights reserved. Page 9
Edwards and the Edwards logo are trademarks of Edwards Limited.
Installation
A386-11-880 Issue E
3.5 Fit the new Exhaust-Silencer
Note: The procedures in Sections 3.5.1 and 3.5.2 assume that the new Exhaust-Silencer will be installed in the
recommended configuration.
3.5.1 Fit the new Exhaust-Silencer to a QDP, iQDP or CDP i, Ei or Si pump
Refer to Figures 6 and 7 to determine the correct installation configuration for your pump and fit the new Exhaust-
Silencer as described below.
1. Remove the protective covers from the inlet- and outlet-flanges of the Exhaust-Silencer and check that the
sealing-faces of the flanges are clean and are not damaged.
2. If you have a new pump, remove the protective cover from the outlet of the NW40 long elbow fitted to the
outlet of the pump.
3. Check that the sealing-face on the outlet of the NW40 long elbow is clean and is not damaged.
4. Check that the mounting clamp which secures the long elbow to the outlet of the pump is correctly orientated;
the clamping-bar must be parallel with and in its closest position to the pump, as shown in Figure 5.
5. If the Exhaust-Silencer is to be fitted to a QDP80, iQDP80 or CDP80 i, Ei or Si pump, use the NW40 Co-Seal and
clamp supplied to fit the 50 mm NW40 straight adaptor supplied to the outlet of the Exhaust-Silencer.
6. On CDP pumps only:
 Position the Exhaust-Silencer underneath the pump.
 Check that the inlet of the Exhaust-Silencer is correctly orientated with the long NW40 elbow, then fit the
‘O’ rings on the mounting hooks on the pump to the corresponding mounting hooks on the Exhaust-Silencer.
7. On QDP and iQDP pumps only: Slide the Exhaust-Silencer in from the high-vacuum end of the pump.
Alternatively, slide the Exhaust-Silencer complete with the support-plate in from the motor end of the pump and
tighten the support-plate retaining screws (Figure 4, item 7).
8. Use the NW40 Co-Seal and clamp supplied to fit the inlet of the Exhaust-Silencer to the outlet of the NW40 long
elbow on the outlet of the pump.
9. Use the NW40 Co-Seal and clamp supplied to connect the Exhaust-Silencer to the exhaust check-valve.