© Edwards Limited 2012. All rights reserved. Page 1
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Introduction
A705-61-880 Issue M
1Introduction
1.1 Scope and definitions
This manual provides installation, operation and maintenance instructions for the Edwards GV Dry Vacuum Pumps
(abbreviated to GV pump(s) or pump(s) in the remainder of this manual). You must use the GV pumps as specified in
this manual.
Read this manual before you install and operate your pump. Important safety information is highlighted as WARNING
and CAUTION instructions; you must obey these instructions. The use of WARNINGS and CAUTIONS is defined below.
Cautions are given where failure to observe the instruction could result in damage to the equipment, associated
equipment and process.
The following IEC warning labels appear on the pump:
The units used throughout this manual conform to the SI international system of units of measurement. Where
appropriate, US equivalent units of measurement are also given.
1.2 The GV pumps
Refer to Figure 1. The GV pumps are rugged, reliable dry vacuum pumps designed for general vacuum use.
The pump is a three-stage, positive displacement rotary pump in which pairs of intermeshing rotors (mounted on
common shafts) are held in correct phase relation by a pair of timing-gears. The timing-gears and the adjacent
double-row angular contact ball bearings are oil lubricated.
The pump has lifting-bolts (5) and is mounted on a robust frame (9). Fixing holes (8) in the frame can be used to
secure the pump frame in its operating position.
Warnings are given where failure to observe the instruction could result in injury or death
to people.
Warning - refer to accompanying documentation.
Warning - risk of electric shock.
Warning - hot surfaces.
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