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Medical Gas Supply System
3.
Commissioning.
3.1
General.
Commissioning of the Manifold Changeover System
must be carried out in full after initial installation. The
objective of the commissioning procedure is to ensure
that all components are serviceable and that the overall
system is operable and set to the correct distribution
pipeline pressure. Suitably qualified competent
personnel who are familiar with this manual must only
undertake commissioning of the Manifold Changeover
System.
3.2
Preparation.
3.2.1
Ensure that all pigtails are connected to the
cylinders and manifold headers on both sides, and that
the restraint chains are secure around the cylinders.
3.2.2
Ensure that the outlet pipe from the Manifold
Changeover System is connected to the distribution
system of the same gas service.
3.2.3
Ensure that the manifold shutoff valve (shown in
Item 8, Figure 1) is fitted and in the closed position.
3.2.4
Open 1 cylinder valve on each bank of the
manifold to pressurize the system.
3.2.5
Check connections on the headers, pigtails,
regulator, and associated pipework for leaks.
3.2.6
Turn power on to the controls, ensure screen
and power on LED's are enlightened.
3.3
Pressure Checks.
3.3.1
Ensure that full gas cylinder pressure is shown
on the controller screen and backup cylinder gauge (Item
17, Figure 1) check the intermediate pressure according
to Table 6, the cylinder graphics are shown as full and
the appropriate LED and icons are lit up (see Figure 16).
See Figures 9 to 14 in Section 2.5, if setup changes are
required.
3.3.2
Check that the pipeline distribution pressure
displayed on the screen and back up gauge (Item 11,
Figure 1) is typically as per Table 5 in Section 4, Principles
of Operation. Adjust as necessary. See procedure for
line pressure adjustment in Section 4.5.
4109992459.00
3.4
Function Checks.
3.4.1
With the left bank as duty, press [Left Arrow]
to select if necessary. Ensure all left hand cylinders
are closed, then slowly drain the pressure from the
vent valve (shown in Figure 1, Item 6) until the cylinder
contents pressure is below the bank changeover point
(typically 150 psi for 55 psi supply, 300 psi for 100 and
180 psi supply). Stop draining the pressure once the
running bank has changed to the right-hand side.
Figure 16 - Start-up, Normal Operation.
NOTE - The below details are shown with left bank set as
duty, if right back is duty any of the bank related graphics
and LED's will be mirrored.
5
1500
150
7
Screen and LED Conditions
No.
Description
1
Line Pressure Value
2
Cylinder Pressure
Valve
3
Manifold Status
Graphic
4
Power LED
5
Left Bank Running
Icon
22
2
1
O2
1500
SCFH
56
1500
44.0
66.0
150
PSI
PSI
PSI
110.0
9
Icon
Condition
N/A
Typically as shown
Typically as shown
N/A
Shown as Normal
Standby Running
Standby Low
Reserve Low
Low Line Pressure
High Line Pressure
Change Cylinder
Immediately
Change Cylinder
On
Off
On
Off
3
4
6
8
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