BSC BSV10, Инструкция по эксплуатации

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5 Gas Ballast Function
This product is installed with the gas ballast function (G3/8 plug screw in the gas ballast port) as
standard. It can be used with connecting needle valve or pipes. The gas ballast function is applicable
to exhaust the condensed gas such as water vapor or solvent vapor.
Breathed condensed gas shall be liquefied through the compress process of the pump, mixed with
the pump oil and then cycled mixed together inside the pump unit. This status brings you the same
situation that you used the high steam pressure oil that raises the ultimate pressure. It also shortens
the life cycle of the shaft seal since the oil lubrication shall deteriorate.
Import the air or dry nitrogen through the gas ballast port just before the pump compression process,
the condensed gas (such as water vapor or solvent vapor) is not liquefied but exhausted with the air
through the exhaust valve, it called gas ballast function.
To use the gas ballast, breathe in the air through the gas ballast port before sucking in condensed gas
and operate the pump around twenty minutes, this is because the “gas ballast effect” becomes larger
as the pump temperature is higher Wait until the pump temperature rises around70°C to open the
vacuum valve to operate the pump. The “gas ballast effect” under lower temperature shall be lower
than the specified process performance.
You also have to note that the condensed gas might remain in the pump oil after you have exhausted
a lot of condensed gas or exhausted the condensed gas without opening the gas ballast port since the
process capacity of the condensed gas by the gas ballast port is limited. In such case, close the
vacuum valve, breathe in the air through the gas ballast port and idle operate the pump. Then the oil
temperature shall rise up and the oil will be cleaned by means of the gas ballast effect. Keep on idle
operating the pump with opening the gas ballast port until the specified ultimate pressure is attained.
You need to replace the pump oil if it was not cleaned (the specified ultimate pressure can’t obtain)
after operating a long time.
CAUTION
The vacuum pump gets high temperature during operation. As the gas ballast port also gets high
temperature, be sure to wear protective gear such as a pair of gloves.
Ensure close the gas ballast port to start operating the pump. The oil might jet out of the gas ballast
port during the operation around high pressure range.
CAUTION
Keep the gas ballast port closed when not exhausting the condensed gas.
If you kept opening the gas ballast port when not exhausting the condensed gas, it might cause the
oil splash, power loss or ultimate pressure rise.
Also, Opening the gas ballast port will increase the temperature rise, noise level and oil mist volume.