35
4.
Operation Method
Vacuumizing and air inflow
Vacuumizing:
1
）
Turn the purge valve CW to its end (close);
2
）
Be sure the pump valve is close, turn on the vacuum pump.
3
）
Turn the pump valve CCW to its end, the exhaust speed is max.
here. If the samples are powder or foaming objects, please
slowly turn on or turn on part of exhaust valve.
Air inflow:
1
）
Turn the pump valve CW to its end (close);
2
）
Turn the purge valve CCW to its end, the inflow speed is max.
here. If the samples are powder or foaming objects, please
slowly turn on or turn on part of intake valve.
3
）
The door of chamber is unable to be opened when the inside
pressure resumed to atmosphere pressure.
※
This unit does not have vacuum breaker system and vacuum
pump anti oil backstreaming system. Please buy the anti oil
backstreaming accessories from the vacuum pump agent.
※
Turn on or off the vacuum pump when the exhaust valve is
close, or else the lube oil of vacuum pump would back stream
to contaminate chamber and sample. (unless there is vacuum
breaker)
※
If there is power cut, please turn off the exhaust valve right
away, or else the lube oil of vacuum pump would back stream
to contaminate chamber and sample. (unless there is vacuum
breaker)
※
The above operations must be strictly carried on as per the
procedures. Our company is not responsible for the loss due
to incorrect operation.
PURGE VALVE
Max
Min
PUMP VALVE
Max
Min
Before the pressure of suction port of pump recovers to atmosphere pressure, do not turn off
the power switch of vacuum pump. If turn off the vacuum pump directly, the oil may back
stream.
【
Notes
】
