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Medical Gas Supply System
6.11 Replace the Gauge for
Distribution System Pressure.
Line pressure gauge kit number, see Table 11, Chapter 7.
NOTE - Line pressure gauge maintenance can be
performed with the associated bank isolated, while
running on the opposite bank of the manifold.
Following procedure describes process to service line
pressure gauge. If necessary, gauge service can be
performed while manifold is in service. However, this
should only be done by qualified technicians experienced
in servicing medical equipment.
6.11.1 If the optional service mode is selected during
maintenance, complete steps in 6.1.
6.11.2 Complete the steps in 6.3 to perform this
maintenance with one bank running. If total isolation is
preferred, follow steps in 6.2.
NOTE - Figure 44 shows example of left line pressure
gauge maintenance, mirror to opposite side for working
on the right bank.
6.11.3 Close the line isolation valve and the intermediate
isolation valve upstream and downstream of the 2
stage regulator to isolate the regulator. Refer to Figure
38.
6.11.4 Vent the pressure in the 2
which is isolated from last step to 0 psi by pressing the
bank bleed valve on the regulator.
CAUTION! When exhausting anaesthetic and
oxygen manifolds ensure that the manifold room is well
ventilated and no potential ignition sources are present.
Figure 38 - Isolating the Left 2
Line
Isolation
Valve
Bank bleed
valve
Intermediate
Isolation
Valve
stage regulator
nd
Stage Regulator.
nd
6.11.5 Loosen the line pressure gauge fix nut, then
loosen the line pressure gauge connector nut.
Line Pressure
Guage
Fix
Nut
Connector
Nut
6.11.6 Replace the new gauge and new connector.
6.11.7 Follow section 6.19 or 6.20 depending on
whether the maintenance was performed with total or 1
bank isolation to bring the manifold back online.
6.11.8 Verify the manifold operation. Refer to Section
3.4.
Figure 44 - Line Pressure Gauge Replacement.
Line Pressure
Gauge
nd
47
4109992459.00
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