© Edwards Limited 2009. All rights reserved. Page 39
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INSTALLATION
A533-23-880 Issue C
3.9 Connect the iF exhaust outlet to your exhaust-extraction
system
Use a catchpot to prevent the drainage of condensate back into the iF system. Condensate that drains back into
the iF system could damage the FDP pump.
When you connect to your exhaust-extraction system, take note of the following:
Ensure that all components in the exhaust pipeline have a maximum pressure rating which is greater than the
highest pressure that can be generated in your system.
Incorporate flexible pipelines in the exhaust pipeline to reduce the transmission of vibration and to prevent
loading of coupling-joints. We recommend that you use Edwards braided flexible pipelines.
You must be able to isolate the exhaust-outlet from the atmosphere if you have pumped or produced
corrosive chemicals.
Adequately support exhaust pipelines to prevent the transmission of stress to pipeline coupling-joints.
Use the following procedure to connect the iF system to your exhaust-extraction system: refer to Figure 1.
1. If the check valve (18) is not required on your application:
remove the exhaust enclosure (26) by removing the screws connecting to the rear bulkhead cover, drip tray
(27) and exhaust enclosure top plate.
undo and remove the clamp and ‘O’ ring (22 and 21) which secures the check valve to the elbow (20).
retain the check valve for possible future use.
2. If neither the check valve (18) nor elbow (20) is required on your application, or if the elbow is required in a
different orientation:
remove the exhaust enclosure (26) by removing the screws connecting to the rear bulkhead cover, drip tray
(27) and exhaust enclosure top plate.
undo, or remove, the clamped ‘O’ ring that secures the elbow to the silencer (19).
reposition, or remove, the elbow (retain both elbow and check valve for possible future use if removed).
3. Remove the temporary cover or blanking plate from the exhaust outlet. Retain blanking plate for future use.
Retain temporary cover for future use on non-contaminated pumps only. Use the NW40 trapped 'O' ring and
clamp supplied to connect the exhaust outlet on the check valve (18), or elbow (20), or silencer (19), to your
exhaust extraction system.
4. If the check valve was removed or elbow was removed or re-orientated:
refit the exhaust enclosure (if possible) using the screws connecting to the rear bulkhead cover, drip tray and
exhaust enclosure top plate.
Pipe the exhaust to a suitable extraction system.
Do not operate the iF system with the exhaust pipeline blocked. If the exhaust pipeline is blocked,
the iF system can generate exhaust pipeline pressures up to 7 bar (7 x 10
5
Pa).
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