A386-11-880 Issue E
Page 6 © Edwards Limited 2008. All rights reserved.
Edwards and the Edwards logo are trademarks of Edwards Limited.
Installation
If the Exhaust-Silencer is to be fitted to a new pump, locate the pump in its operating position before you fit the
Exhaust-Silencer. If you do not, you may damage the Exhaust-Silencer when you move the pump.
3.3 Unpack and inspect
Remove all packing materials and protective covers and check the Exhaust-Silencer.
If the Exhaust-Silencer is damaged, notify your supplier and the carrier in writing within three days; state the Item
Number of the Exhaust-Silencer together with your order number and your supplier’s invoice number. Retain all
packing materials for inspection. Do not use the Exhaust-Silencer if it is damaged.
If the Exhaust-Silencer is not to be used immediately, replace the protective covers. Store the Exhaust-Silencer in
suitable conditions, as described in Section 6.
3.4 Remove the old Exhaust-Silencer (if necessary)
Note: The following procedure assumes that the old Exhaust-Silencer has been installed in the recommended
configuration.
1. Release the NW40 clamp which secures the inlet-flange of the Exhaust-Silencer to the CDP, QDP or iQDP pump
outlet or the outlet of the long NW40 elbow connected to the outlet of the CDP, QDP or iQDP pump. Remove the
clamp and the Co-Seal.
2. Release the NW40 clamp which secures the outlet-flange of the Exhaust-Silencer to the exhaust check-valve.
Remove the clamp and the Co-Seal.
3. On CDP pumps only: Remove the 2 ‘O’ rings from each of the 3 mounting hooks on the Exhaust-Silencer, then
remove the Exhaust-Silencer from the pump.
4. On QDP and iQDP pumps only: Slide the Exhaust-Silencer out towards the high-vacuum end of the pump to
remove the Exhaust-Silencer from the pump. Alternatively, undo the two support-plate retaining screws (Figure
4, item 7) and slide the Exhaust-Silencer complete with the support-plate towards the motor end of the pump.
Substances which accumulate in the Exhaust-Silencer may be dangerous. Do not allow these
substances to come into contact with your skin or eyes. Do not inhale vapours from these
substances.