4.7.2 Side inlet-port connection
A side inlet-port is available, refer to
Figure: General view of the pump on page 11
. To
use the side inlet-port, use the following procedure.
1.
Carefully remove the side panel from the pump: use a suitable flat blade
screwdriver or similar tool for this purpose. The panel is located by two nylon
rivets.
2.
Unscrew and remove the blanking plug with its O-ring.
3.
Unscrew and remove the adaptor flange and its O-ring and replace it with the
blanking plug and O-ring that was removed in Step 2.
4.
Screw the adaptor flange and its O-ring into the side inlet-port.
4.8 Pump outlet connection
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.
To connect the pump to your outlet accessories or to the exhaust treatment plant:
▪
Connect a 10 mm internal diameter vacuum hose or 12 mm internal diameter
plastic hose to the outlet nozzle (
Figure: General view of the pump on page 11
).
▪
Remove the outlet nozzle and connect to the 3/8 inch BSP tapped hole.
▪
Remove the outlet nozzle and replace it with an NW25 flange adaptor (available as
an optional accessory, see
Spares and accessories on page 36
) and then connect to
the NW25 flange.
Take note of the following information before connecting to the pump outlet:
▪
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
5
Pa) at full
pump throughput.
▪
In the following circumstances, we recommend you to fitting an oil mist filter to
the pump outlet
▪
if using the pump with the gas-ballast control open
▪
if operating the pump with an inlet pressure greater than 10 mbar for
extended periods or
▪
if frequently pumping down from atmospheric pressure.
▪
The mist filter will trap the oil exhausted from the pump: the oil can be re-used if it
is not contaminated.
4.9 Leak-test the system
Leak
‑
test the system and seal any leaks found after you have installed the pump, to
prevent leakage of substances out of the system and leakage of air into the system.
Page 21
A37132880_F - Installation
Summary of Contents for A37104902
Page 43: ...Page 41 A37132880_F Service...
Page 44: ...edwardsvacuum com...
