S149-01-880 Issue F
Page 16 © Edwards Limited 2011. All rights reserved.
Edwards and the Edwards logo are trademarks of Edwards Limited.
Installation
Figure 9 - Inlet piping configurations
3.5.1 Vacuum access port locations
Vacuum access ports are conveniently located on the pump and provide 6.4 mm (1/4 inch) or 12.7 mm (1/2 inch)
access (Refer to Figure 2 items 7 and 11, Figure 3 items 7 and 12, and Figure 4 items 6 and 19). The pipe plugs can
be replaced with a small vacuum ball valve to which a gauge can be connected. If a McLeod gauge is used, a synthetic,
thick-wall, smooth-bore tubing such as Tygon should be used for a flexible connection. The gauge should be located
approximately 610 mm (24.0 inch) above the port to prevent oil from entering the gauge.
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