Edwards ATEX 1 EHR, Инструкция по эксплуатации

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OPERATION
A750-04-880 Issue F
4 OPERATION
Note: The procedures in the following sections assume that your sealing liquid supply system is as shown in
Figure 1 , detail A, B or C.
4.1 General operation safety

Do not expose any part of your body to vacuum.

Do not operate the pump with the process inlet or outlet open to the atmosphere.

Do not operate the pump without sealing liquid in the pump.

During operation, prevent accidental contact with the hot pump. Note that if you use hot sealing liquid (up
to 70
o
C), the temperatures of the pump process outlet and seal surfaces will be higher than the temperature
of the sealing liquid supply.

Do not continue to operate the pump under cavitation conditions. If you do, the pump can be severely
damaged (see
Section 4.3 ).

Never disconnect any of the connecting pipelines (for example, the sealing liquid supply pipeline) when the
pump is operating.

Where necessary, wear ear defenders. The pump can be noisy during operation (refer to Section 2.4 ).
4.2 Start-up
1. Refer to Figure 1 , detail A, B or C. Open the sealing liquid supply valve (16) and the priming/drain valve (7).
Wait until liquid flows from the priming/drain valve (7). The pump is now primed. Close sealing liquid supply
valve (16) and then close the priming/drain valve (7).
2. Ensure that all isolation-valves (if fitted) in the process outlet pipeline are open.
3. Ensure that the flow regulating valve (12) is closed.
4. On ATEX Category 1 and 2 pumps configured for external seals flush supplies only: open the seals flush supply
valve (2).
5. Start the pump.
6. Open any isolation-valves (if fitted) in the process inlet pipelines.
WARNING
Obey the safety instructions and precautions listed below. If you do not, there may be a risk of
injury or death to people, or damage to the pump.
WARNING
Do not operate the pump without sealing liquid in the pump. If you do, there may be a risk of
explosion.
WARNING
Do not start the pump full of water as this could damage the pump.