Edwards GV250, Instruction Manual

Page: 10 / 16

A505-71-880 Issue C
Page 6 © Edwards Limited 2009. All rights reserved.
Edwards and the Edwards logo are trademarks of Edwards Limited.
INSTALLATION
3.3 Fit the Silencer
Refer to Figure 2 and use the following procedure to fit the Silencer to the GV pumping system. During installation,
take note of the recommendations included in the GV instruction manual.
1. If the GV pumping system has been used, purge it with air or nitrogen, then shut down the pumping system and
allow it to cool to a safe temperature before you continue: refer to the shut-down procedure in the GV
instruction manual.
2. Isolate the GV pump and other components in your process system from the electrical supply, so that they
cannot be operated accidentally.
3. If the GV pumping system is already installed, undo and remove the four M8 x 50 hex-head bolts, nuts and
washers (4 and 7) which secure your exhaust pipeline to the GV outlet (5), then disconnect your exhaust pipeline
from the GV outlet.
4. If you have not installed the GV pumping system, remove the blanking plate from the GV outlet: refer to the GV
instruction manual.
5. Attach suitable lifting equipment to the two lifting brackets (11), then use the lifting equipment to move the
Silencer into position against the GV outlet (5).
6. Use four of the M8 x 50 bolts, nuts and washers (7 and 4) supplied with the Silencer (or those removed in Step 3),
together with the trapped ‘O’ ring (6) supplied with the GV pumping system, to connect the Silencer inlet (8) to
the GV outlet (5). Ensure that the Silencer (10) is vertical, as shown in
Figure 2 .
7. Use the ISO63 trapped ‘O’ ring (1) and the fourM8bolts, nuts and washers supplied with the Silencer to connect
the Silencer outlet (2) to your exhaust-extraction system.
8. Ensure that the drain plug (9) is tight.
9. Disconnect your lifting equipment from the lifting brackets (11).
3.4 Leak test the installation
Leak test the system and seal any leaks found after you have installed the Silencer: refer to the Installation section
of the GV pump instruction manual.
WARNING
When you install the Silencer and your exhaust-extraction system, ensure that you comply with
the WARNINGs and CAUTIONs in the GV instruction manual. If you do not, you can cause injury to
people and damage to the pumping system.
WARNING
Leak test the system after installation and seal any leaks found, to prevent the leakage of
dangerous substances out of the system and leakage of air into the system.