GCE MM40 Mode D'emploi page 10

EN
7. OPERATION
7.1. START UP OF MANIFOLD
When the manifold is completely installed and the parameters are checked.
Check that shut off valves V1 & V2, V5 & V6 and V10 are closed.
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Check that both purge valves V3 & V4 are closed.
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SLOWLY open gas flow from cylinders or cylinder bundles into the inlets I1 & I2.
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SLOWLY open purge valves V3 & V4 and purge left and right inlet part of the manifold.
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Close purge valves V3 & V4.
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SLOWLY open inlet shut off valves V1 & V2. The cylinder pressures can be read on the gauges
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M1 & M2.
SLOWLY open service valves V5 & V6. The outlet pressure can be read on the gauge M3.
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SLOWLY open outlet shut off valve V10. The gas supply will start flowing into the pipeline
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through outlet connection O1.
Decide by moving the lever L, if right or left bank of cylinders should start to supply. Always
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start supply from the bank that has the lowest pressure.
Info: Two micro switches T5 & T6 are fitted to the back plate to electrically decide which side
is monitored for leaking reserve.
Check all connections for leakage using a leak detection fluid.
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While gas is flowing the pressure in the operating side will fall. This will be indicated on the
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inlet gauges M1 or M2.
7.2. BANK CHANGE OVER
At a predetermined pressure set of the manifold regulators of 10,5 bar, the reserve bank will
take over from the near empty bank of cylinders. You will have an alarm "Change of operating
side". It is indicated by pressure switches. (See Chapter 8 – Alarm conditions).
7.2.1. LEFT HAND (LH) SIDE EMPTY
The inlet pressure gauge M1 on the left-hand side is indicating exhausted cylinders, so the
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left-hand bank of cylinders needs to be replaced.
C1
Fig. 4
10/164
C2
L B