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Medical Gas Supply System
6.5.18 Insert new Regulator/Body O-ring. Use care to
place uniformly in groove.
6.5.19 Using Plastic Pick, remove old O-ring from Piston
Diaphragm and install new one included in kit.
6.5.20 Stack Piston Diaphragm, Spring and Spring Icon
together.
6.5.21 Place Spring Chamber on top of these
components to capture them. The O-ring on Piston
Diaphragm should hold all components in Spring
Chamber.
6.5.22 Assemble Spring Chamber to the Manifold Body.
Tighten to 68 Nm.
6.5.23 Put Locknut on Adjusting Screw and assemble to
Spring Chamber.
6.5.24 Turn Adjustment Screw until desired set
pressure is reached.
6.5.25 Tighten the Locknut.
6.5.26 Verify the manifold operation.
6.6
Replace Line Pressure Relief
Valve.
Line pressure relief valve kit numbers, see table 13,
chapter 7.
NOTE - Line pressure relief valve replacement requires
total isolation of the manifold.
If the optional service mode running is to be used during
maintenance, complete steps in 6.1.
6.6.1
Complete the steps in 6.2 to isolate and
depressurise the manifold ready for maintenance.
6.6.2
Slowly turn the swivel nut of connection in the
upper position, see figure 42. Loosen the relief valve
nut at the below position see figure 42. If you hear gas
escaping do not fully unscrew the joint, refer back to
section 6.2 to ensure the system is fully drained.
6.6.3
Remove the existing relief valve carefully and
replace it with the new relief valve together with the new
connector from the service kit.
6.6.4
Fit the new relief valve, ensure the direction
arrow is as per figure 42.
6.6.5
Fit the vent point fitting.
6.6.6
Follow section 6.17 to bring the manifold back
online.
6.6.7
Verify the manifold operation.
Figure 42 - Line Pressure Relief Valve Replacement.
Vent
Point
Fiting
Disconnection
Points
Relief
Valve
Fitting
37
Flow
Direction
Arrow
4109992485.00
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