Checkout Procedure For Manifold Port Valve - GE 9100c Technical Reference Manual

9100c
9.10.2 Checkout
procedure for
manifold port valve
WARNING
9-18
M1207027
Reproduced from the electronic master in MATRIX
Use the Vaporizer Manifold Valve Test Tool to perform the checkout
procedure for the manifold port valve. This tool and test procedure
are intended for use only when the valve cartridge assembly is
replaced.
This replacement and test procedure is a service action and is not
Note
part of the maintenance program.
1. Bleed all gas pressure from the machine (Section 9.1).
2. Ensure that all cylinder and pipeline gauges read zero before
proceeding.
3. After replacing the valve cartridge assembly, remove the
vaporizer port o-ring.
4. Attach the valve testers to the top of the valve by sliding the
bottom of the tester onto the o-ring groove.
5. Tighten the tester screw down onto the valve until the screw
bottoms out on the top of the valve. The tester o-ring should
create a seal with the top of the valve.
6. Remove the rear upper panel (Section 9.2).
7. Remove the inlet tube from the vaporizer manifold.
8. Test the negative low-pressure leak-test device:
a. Put your hand on the inlet of the leak-test device. Push hard
for a good seal.
b. Remove all air from the bulb.
c. The bulb should not inflate in less than 60 seconds.
9. Attach the negative low-pressure leak-test device to the common
gas outlet using the test adapter (Section 3.9.1).
10. Remove all air from the bulb. The bulb should not inflate in less
than 45 seconds.
11. Remove the valve tester.
12. Reassemble the inlet tube, vaporizer port o-ring, and the upper
rear panel.
13. Conduct a negative low-pressure leak test on the system
(Section 3.9.1).
If the valve test tool is not removed before flowing gas
through the system, pneumatic head damage could
result.
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M1207026