Concoa 536 Series, Инструкция по установке и эксплуатации

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OPERATION
As the gas in the primary side (liquid cylinders) is depleted, there will not be a drop in gas pressure
on the left gauge until the cylinders are empty. When the inlet pressure drops to the pressure
setting of the reserve side regulator, flow will begin from the reserve cylinder. The inlet pressure on
the primary side will stabilize at 130-140 PSI. This is called a changeover. At this point, the gas
pressure on the reserve side will drop. This indicates that it is time to change the liquid cylinders on
the primary side. Before removing the cylinder, be sure to close the cylinder valve and any other
valves that connect the cylinder to the system. Remove the depleted cylinder(s) and replace with a
full cylinder(s). Note: While changing cylinders on one side, there will be no interruption in flow.
WARNING: After several changeover cycles, it is possible that the reserve cylinder may not have
sufficient reserve capacity. Periodically check the pressure of the reserve high pressure cylinders.
Maintain enough gas in the high pressure cylinders so that when a changeover occurs, the system
will not run out of gas before the liquid cylinders are replaced.
For Pressure Switch Gauge Models:
Adjusting the alarm set point does not affect the switchover point of the AutoSwitch. The alarm is
used to provide an audible and visual warning that a changeover is about to occur. If the nearly
depleted cylinders are changed when the alarm LEDs illuminate, the cylinders will not be as empty
as if the actual changeover had occurred. Slide the red tab seen on each inlet gauge to adjust the
alarm set points. The lowering of the alarm set point pressure may cause the alarm to not work
properly. When adjustments are made, check the function of the system. Pressurize the system and
shut off the inlet pressure to both sides. Allow the inlet pressure to decrease by allowing a small
flow (50 CFH). Observe both inlet gauges. When the left bank is low (below the set point on the
gauge), the red LED will illuminate. Make sure the left red LED illuminates before the pressure on
the opposite side starts to decrease. Allow the system inlet pressure to decrease further until the
right red LED illuminates. This should happen before both inlet pressures start falling together.
Figure 11
MAINTENANCE
At regular intervals, the system should be checked for leaks and proper function (see trouble shooting).
Any leaks in the system should be corrected immediately. The pigtail check valve should also be
checked for leaks when a depleted cylinder is removed. Note: the system inlet and pigtail should be
pressurized when checking for leaks. At no time should the preset regulator factory settings be
changed.
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