MIL'S PRO2XY, Инструкции по запуску и обслуживанию, Страница: 28 / 48

PRO
2
XY OXYGEN CONCENTRATOR
26 519211-22
EN
11.5 Operating under control of single-line concentrator with LP booster (12-bar version)
When storage receiver pressure is less than 10.5 bar (measured by C1O ), the concentrator starts.
At the end of the two cycles of pre-production or if pressure reaches 10 bar, the low-pressure booster starts.
When storage receiver pressure reaches 12 bar (measured by
C1O ), the LP booster stops, and the order is given to stop the
concentrator: the concentrator operates during two cycles of production (flexo mode) and stops. If during these two cycles, the
storage receiver pressure reaches 10 bar (measured by
C1O ), the concentrator keeps running and there is no pre-production phase.
The booster also starts.
When storage receiver pressure is less than 5 bar (measured by
C1O ), the LP booster doesn't start: the oxygen goes through the
storage receiver directly from the homogenizer. When storage receiver pressure reaches 5.1 bar, the booster is released.
When homogenizer/receiver pressure [
CpO
2
] drops below 4 bar (default value), the LP booster can't operate.
When homogenizer/receiver pressure [ CpO
2
] is higher than 5 bar (default value), the LP booster starts.
The LP booster is also protected according to its compression ratio. When the ratio
[C1O] / [CPO2] (converted to absolute pressure)
reaches 2.5 the booster stops, to avoid internal heating which would lead to its ruin. It will restart at 2.1.
When a concentrator starts, it will operate during 2 cycles on itself before the delivery of oxygen in its homogenizer /receiver.
if "O
2
analyser effect" is on STOP in the PROCOM 2 and if the O
2
concentration decreases under 90%, the isolating valve is closed, the
consumption valve is open, consequently the O
2
concentration reaches up to 93%. In this case, the concentrator and its LP booster
are not available for production.
11.6 Operating under control of multiple-line concentrator with LP booster (12-bar version)
The isolating valve
[V.is]
of the priority concentrator is open and the
[C1O]
sensor pressure fitted on the storage receiver will control
the general pressure level of the oxygen consumption. This sensor will communicate the running order of the top-up and the back-
up concentrators.
As long as they are not called to help the priority concentrator, the isolating valves of the top-up and the back-up concentrators are
closed.
When the
[C1O] priority sensor pressure reaches 10.5 bar, the priority concentrator starts.
At the end of the two cycles of pre-production or if pressure reaches 10 bar, the low-pressure booster starts.
If the pressure drops to 9.2 bar, the top-up concentrator and its LP booster start and their isolating valve is open following the same
procedure as the priority concentrator and its LP booster.
If the pressure still drops to 8.5 bar, the back-up concentrator and its LP booster start and their isolating valve is open following the
same procedure as the priority concentrator and its LP booster.
When the
[C1O] priority sensor pressure reaches 12 bar, boosters stop and the order is given to the various concentrators to stop.
The isolating valves of the top-up and back-up concentrators are closed again and the concentrators operate during 2 cycles of
production (flexo mode). If during these two cycles, the storage receiver pressure reaches 10 bar (measured by
C1O ), the priority
concentrator keeps running and there is no pre-production phase. Its booster also starts.
When storage receiver pressure is less than 5 bar (measured by
C1O
), the LP booster doesn't start: the oxygen goes through the
storage receiver directly from the homogenizer. When storage receiver pressure reaches 5.1 bar, the booster is released.
When homogenizer/receiver pressure drops below 4 bar (measured by
CpO
2
), the LP booster can't operate.
When homogenizer/receiver pressure is higher than 5 bar (measured by CpO
2
), the LP booster starts.
The LP booster is also protected according to its compression ratio. When the ratio
[C1O] / [CPO2] (converted to absolute pressure)
reaches 2.5 the booster stops, to avoid internal heating which would lead to its ruin. It will restart at 2.1.
When a concentrator starts, it will operate during 2 cycles on itself before the delivery of oxygen in its homogenizer /receiver.
If the O
2
concentration decreases under 90%, the isolating valve is closed, the consumption valve is open, consequently the O
2
concentration reaches up to 93%. In this case, the concentrator and its LP booster are not available for production.
When the oxygen concentrator is stopped or during a power cut, some parts are always under pressure.