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9
GENERAL MAINTENANCE
The tests and inspections specified below apply only to the Amico Economy Manifold and not to the medical gas pipeline
system as a whole. They are intended to help ensure the proper operation of the manifold and not to be interpreted as
repair instructions. Fault finding and repair procedures are given in the Troubleshooting section of this manual.
CONTROL EQUIPMENT
Control equipment should be inspected and tested according to the following schedule:
1. PRESSURE REGULATOR
• Observe and record line pressure periodically
• Test for external leaks annually
2. PRESSURE RELIEF VALVES
• Determine the pressure at which relief occurs at least annually and compare with the requirements of clause
4-3.1.8.5. of NFPA 99.
3. HIGH PRESSURE INLET VALVE (MANIFOLD HAND VALVES)
• Inspect once annually and test for external leakage and tightness when opening and closing the valve.
CYLINDER EXTENSION BARS
The following components shall be inspected annually:
1. Test check valves of pigtail assemblies for proper closure.
2. Inspect pigtail assemblies for apparent damage and thread damage to cylinder connections, replacing all
damaged pigtails immediately.
NOTE:
Replace ALL pigtails after five years of service. The cylinders and the operating regulators of a Nitrous Oxide or a
Carbon Dioxide supply system shall be observed daily during peak demand periods to determine whether they show
frosting or condensation on the surface. Where this is evident, the system shall be further inspected for evidence of
leaks and should excessive condensation or frosting occur, the option would be to add more cylinders to increase the
volume or to upgrade to an Amico Corporation Microprocessor Automatic Manifold with a built in heater kit.
PERIODIC STANDING PRESSURE TEST
At intervals of not more than two years, a one hour standing pressure test shall be made on each medical gas system to
check for leakage.
Maintenance
