Edwards A37104902, Instruction Manual

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▪ We recommend the use of a foreline vacuum isolation valve to allow the pump to
warm up before pumping condensable vapours or if a vacuum needs to be
maintained when the pump is not running.
▪ Avoid high levels of heat input to the pump from the process gases, otherwise the
pump may overheat and seize, and cause the motor thermal overload device to
open.
▪ If using the pump in a high ambient temperature with a high gas throughput, the
temperature of the pump body may exceed 70 °C (158 °F). We recommend the use
of additional guarding to prevent contact with hot surfaces under these conditions.
▪ Make sure that the exhaust pipeline cannot become blocked. If an outlet-isolation
valve is fitted, make sure the pump cannot be operated with the valve closed.
▪ Provide for a purge of inert gas when the pumping system is shut down, to dilute
dangerous gases to safe concentrations. A suitable gas-ballast control valve for
introduction of purge gas into the pump is available as an accessory (refer to
Solenoid operated gas-ballast control valve on page 38 ).
Contact our application team for further advice on dilution requirements if required.
4.3 Unpack and inspect
Remove all packing materials and protective covers and check the pump. If the pump is
damaged, notify your supplier and the carrier in writing within three days, state the Item
Number of the pump together with your order number and your supplier's invoice
number. Retain all packing materials for inspection. Do not use the pump if it is
damaged.
Check that your package contains the items listed in
Table: Checklist of items on page 18 .
If any of these items is missing, notify your supplier within three days.
If the pump is not to be used immediately, replace the protective covers. Store the pump
in suitable conditions, as described in Storage on page 34 .
Table 8
Checklist of items
Quantity Description Check (
ü
)
1 Rotary vacuum pump
r
Fitting pack containing the following:
1 Hexagon wrench, 4 mm
r
1 Hexagon wrench, 6 mm
r
1 NW10 centring ring
r
1 O-ring for centring
r
1 O-ring for outlet port
r
4.4 Locate the pump
The pump can be either free-standing on its baseplate which is fitted with rubber pads,
fixed by four fixing bolt holes in the baseplate, or used with vibration isolators. For the
location of fixing holes in the baseplate, refer to Figure: Dimensions (mm) on page 14 .
Provide a firm, level platform for the pump. Locate the pump so that the oil level
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A37132880_F - Installation