BOC E2M28, Инструкция по эксплуатации

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E2M28 and E2M30 Rotary Vacuum Pumps
IN
STALLATION
PAGE
22
Issue K 22 Jul 05
3.9 Connect 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.
We recommend that you fit an oil mist filter to the pump outlet in the following circumstances:
• If you use the pump with the gas-ballast control open.
• If you operate the pump with an inlet pressure greater than 10 mbar for extended periods.
• If you frequently pump down from atmospheric pressure.
The mist filter will trap the oil exhausted from the pump: you can reuse the oil if it is not contaminated.
To connect the pump to your outlet accessories or to your exhaust treatment plant, you can:
• Connect 15 mm internal diameter vacuum or plastic hose to the outlet nozzle (Figure 1, item 2).
• 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, see Section 7.4.13) and then connect to the NW25 flange.
3.10 Gas-ballast inlet connection
The position of the gas-ballast inlet is shown in Figure 1 (item 4). The gas-ballast inlet has several filters
(shown in Figure 11) to trap any dust and debris if you use air as the gas-ballast supply.
If you want to use a different gas for the gas-ballast supply, or if you want to connect a valve to the gas-
ballast inlet:
1. Remove the filters (as described in Section 5.6).
2. Connect your gas supply or valve to the
1
/
4
inch BSP threaded hole.
3.11 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.
WARNING
Connect the pump outlet to a suitable treatment plant to prevent the discharge of
dangerous gases and vapours to the surrounding atmosphere.
WARNING
Use a catchpot to prevent the drainage of contaminated condensate back into the pump.