Starting The Generator; Stopping And Depressurising The Generator - Parker MIDIGAS 2 Guide D'utilisation

4.2 Starting the generator

1 Make sure that all connection points are secure and all of the ball
valves on the system are closed.
2 Open the ball valve (BV1) on the compressed air inlet port.
3 Switch 'ON' the electrical power to the generator and wait for the
controller to complete the initialisation routine.
4 Press or to initiate the start up routine. If the start clean up option
is enabled the generator will run through "Rapid Cycle / Pure Start"
[Refer to section 4.4 for more details on Rapid Cycle and Pure Start].
Note. If the generator was running when the electrical power was
removed (e.g. power failure), the start up routine will be initiated
automatically.
On completion of the clean up cycle the N
the N outlet indicator will illuminate green.
2
5 Open the buffer inlet ball valves (BV2) approximately 10 degrees and
leave the buffer vessel to pressurise gradually. When the pressure
gauge on the buffer vessel reads within 0.5 barg (7psig, 0.05MPa) of
the inlet pressure, check for leaks in the connecting piping and then
fully open the ball valves.
6 Open the ball valves on the outlet of the buffer vessel (BV3) and check
for leaks in the piping between the vessel and the generator.
7 Open the ball valve (BV4) on the N
Note: If the purity of the gas is not within specification (applies only to generators fitted with an O
through a vent solenoid within the generator. Gas will only be delivered to the application when the specified purity is achieved.
The generator is designed for continuous use and, once running, requires no further operator intervention.

4.3 Stopping and depressurising the generator

1 Close the ball valve on the N
2 Press or to initiate the shutting down sequence.
3 The generator will complete the current cycle and then exhaust both
beds. This may take several minutes particularly on ppm generators.
4 When the generator is depressurised it will revert to standby mode.
Close the ball valve (BV1) on the compressed air inlet port and buffer
vessel ball vales (BV2) and (BV3).
There may be a residual pressure of approximately 1.5
bar within the columns due to the release of oxygen
from the CMS. This must be released if the generator
is to be shipped or requires maintenance.
5 To release the residual pressure disconnect the purge pipe (X) from
one of the flow regulators on the upper manifold.
Wait for the pressure gauges to drop to zero before continuing.
outlet valve will open and
2
Outlet port.
2
Outlet port (BV4).
2
analyser) it will be vented to atmosphere
2
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