Connect The Pump Outlet; Gas-Ballast Inlet Connection; Figure 10: Electrical Supply Connection, Three-Phase Motors: 380-415 V 50 Hz And 460 V - Edwards E1M18 Instruction Manual

Figure 10 Electrical supply connection, three-phase motors: 380-415 V 50 Hz and 460 V 60 Hz
3

4.9 Connect the pump outlet

WARNING:
Connect the pump outlet to a suitable treatment plant to prevent the discharge of
dangerous gases and vapours to the surrounding atmosphere. Use a catchpot to
prevent the drainage of contaminated condensate back into the pump.
The exhaust system must be configured so that the maximum pressure at the pump
outlet does not exceed 0.5 bar gauge (1.5 bar absolute, 1.5 x 10
throughput.
We recommend fitting an oil mist filter to the pump outlet in the following
circumstances:
▪ When using the pump with the gas-ballast control open.
▪ When operating the pump with an inlet pressure greater than 10 mbar for
extended periods.
▪ When frequently pumping down from atmospheric pressure.
The mist filter will trap the oil exhausted from the pump: the oil can be reused if it is not
contaminated.
To connect the pump to the outlet accessories or to the exhaust treatment plant:
▪ Connect 15 mm internal diameter vacuum or plastic hose to the outlet nozzle
(Figure: General view of the pump on page
▪ Remove the outlet nozzle and connect to the 3/4 inch BSP threaded hole.
▪ Remove the outlet nozzle and replace it with an NW25 flange adaptor (available as
an optional accessory, refer to
to the NW25 flange.

4.10 Gas-ballast inlet connection

The position of the gas-ballast inlet is shown in
page 11. The gas-ballast inlet has several filters (shown in
A34310880_T - Installation
L1
L2
L3
W2
U1
U2
V1
V2
W1
11).
Pump outlet adaptor on page
Figure: General view of the pump on
Page 29
5
Pa) at full pump
48) and then connect
Figure: Remove/replace the