4.6 Outlet
The pipe caliber connected to the outlet side should not be thinner than the outlet diameter.
Otherwise there is a risk that the pressure inside the pump will rise up to cause break of the casing or
oil level gauge, or overload of the motor.
Oil mist would appear through the exhaust side when the pump running around high pressure range,
discharge it to outdoor or an oil removing device through exhaust piping. It is recommended to use
an oil mist trap to reduce oil consumption and to trap oil mist.
WARNING
The pump is not made as the withstand pressure structure.
Ensured pressure value of the pump is not over 0.03MPa (gauge pressure).
Ensure exhaust side keeps clear when the pump running.
4.7 Operation
1. The pump can start and run under any pressure which not higher than atmospheric pressure. If
the environment temperature is not lower than 10°C , pump can start without any difficulty. If
there is electromagnetic valve equipped on the inlet port, it should be started at the same time
with pump starting.
2. During pump operating, if the air inlet side suddenly exposed to the atmosphere because of
accidently trouble (system damaged etc.), you should stop the pump as soon as possible, close
the pipe which connecting with the system to avoid the pump oil splashing out.
3. High working environment temperature will lead to the ultimate vacuum worse.
4. The ultimate pressure of the pump, the value measured from compression mercury vacuum
gauge should prevail. Connect vacuum gauge which was full pre-pumped and calibrated directly
to the inlet port, if the pump temperature goes to stabilize, the ultimate pressure can be reached
after pump running 30 minutes.
5. The pump becomes hot during operation (40 to 80°C ). Do not touch the motor, pump unit and
pipes during or just after stopped operation while the pump unit remains very hot. Apply an
appropriate protection to avoid touching the surface as necessary.
WARNING
The oil temperature reaches 70 to 80°C on continuous operation for hours under
high suction pressure. Perhaps parts inside the pump are damaged if the oil
temperature higher than80°C . Check the pump or contact with us.
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