Edwards EXT200/200H GCMS, Инструкция по эксплуатации, Страница: 27 / 38

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Operation
B756-01-880 Issue K
4 Operation
4.1 Start-up
Use the procedure below to start up a basic, manually controlled pumping system with a manual vent valve and an
EXDC version controller. Refer to the EXDC Instruction Manual.
1. Ensure the manual vent valve is closed (turn clockwise to close it).
2. Turn on the cooling-water supply (if water cooling is used) and/or switch on the power to the air cooler.
3. Start the backing pump.
4. When the vacuum system pressure is approximately 10 mbar or less, switch on the power supply to start the EXT
Split Flow Pump.
5. The pump will then accelerate to full operating speed. Once nominal operating speed is reached, the normal
speed LED on the EXDC Controller will illuminate.
Note: Refer to the controller manual if using the EXC Controller.
4.2 Shut-down
Note: In an emergency only, open the vent valve quickly to decelerate the pump rotor in the shortest possible
time.
WARNING
Do not operate the pump unless it is connected to the vacuum system. The pump rotor rotates at
very high speeds and the rotating blades might not be visible. If the pump is not installed correctly,
the pump rotor can cause injury.
WARNING
Do not move the pump whilst it is running. The gyroscopic forces generated by this movement can
cause excessive use of the back-up bearing and may result in catastrophic failure of the pump.
WARNING
When power is restored following a power cut, the pump will re-start automatically. The pump
must remain connected to the vacuum system to prevent risk of injury.
WARNING
After power to the pump has been switched off, either through emergency or as a requirement,
the rotor will continue to spin at very high speeds. Until the rotor has stopped, it possesses
considerable mechanical energy.
WARNING
Do not remove the EXDC Controller/EXC Controller cable from the pump until the pump is
completely at rest. To do so could expose personnel to hazardous voltage and potentially damage
the EXDC/EXC Controller.