Spectron BE55-2U, Руководство по эксплуатации

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BE_55+56-2U_1212.docx 15
Operating Manual
of the BM and BE series
4. Operation
The procedure for changing a cylinder is described below, taking the right-hand gas cylinder by way of example:
Step Activity
1 Acknowledge the change of cylinder.
Position the switching lever with the arrow marking pointing up.
"In operation" can be read for the cylinder on the left --> which is now the supply side.
"Reserve" can be read for the cylinder on the right --> which is now the reserve side.
2 Close the right-hand gas cylinder valve and process gas valve.
3

Open the waste gas valve on the right.

Release the residual pressure in the pigtail.

Close the waste gas valve on the right.

Loosen the pigtail on the cylinder valve on the right and connect it to the new cylinder.
4 Pressure purge the system:

Slowly open the gas cylinder valve on the right.

Close the gas cylinder valve on the right.

Open the waste gas valve on the right to relieve the pressure.

Close the waste gas valve again.
Repeat at least three times.
If the inlet pressure is low, the process has to be repeated more often.
5 Slowly open the gas cylinder valve on the right.
6 Slowly open the process gas valve on the right.
7 Check the gas cylinder connection and all detachable connections for leakage.
4.5
Taking the equipment out of operation
Taking out of operation or interrupting operation for a short period
When interrupting operation for a short period, all you need to do is close the process gas valve.
The red marking in the handwheel window indicates immediately that the valve is closed.
Taking out of operation or interrupting operation for a longer period
Step Activity
1 Close all valves.
To do this, turn until you can see the red marking in the handwheel window.
2 Open the waste gas valves.
3 Any gas in the system flows out of the waste gas pipe.
4 Close the waste gas valves.
5 The pressure in the pressure control panel must be released by allowing the gas to flow away via
the consumer. It must be ensured that the indicators of the two pressure gauges are on zero [0] –
visual check.
If it has been used with corrosive or toxic gases, the entire pressure control panel must be purged
with inert gas.
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