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Medical Gas Supply System
5.
Maintenance Procedures.
A competent person who is conversant with the
maintenance of high-pressure medical gas installations
and any special national conditions, which may
apply, must carry out all maintenance. Preventative
maintenance contracts are available from BeaconMedaes
for installations within UK. The distributors will be able
to supply similar contracts in other areas.
WARNING! Obtain a work permit (or equivalent
for overseas) before commencing with any work on a
medical gas installation.
5.1
Before Installation.
5.1.1
Check all the parts clean and oil-free, especially
for the parts contacting with the gas of high pressure.
5.1.2
Check gas specific connections to match the
right type of the gas.
5.1.3
Don't use chemicals, lubricants or sealants
unless specified in these instructions.
5.1.4
Before connecting cylinder to manifold system,
momentarily open and close cylinder valve to blow out
dirt and debris.
5.1.5
After connecting cylinder to manifold, open
cylinder valve slowly to allow heat of compression to
dissipate.
5.1.6
Don't use flame or "sniff" test for leaking
inspection.
5.1.7
Don't apply heat to any part of manifold system.
5.1.8
Always secure cylinders with racks, straps, or
chains. Unrestrained cylinders may fall over and damage
or break off cylinder valve.
5.1.9
Don't repeatedly bend, sharply bend, or twist
copper tailpipes as damage to tubing may occur.
5.1.10 Don't bend flexible tailpipes into a radius smaller
than 3'.
5.1.11 Visually inspect each tailpipe for cleanliness and
pipe damage. Don't use and immediately replace dirty or
damaged tailpipes.
5.1.12 Check leaks at the connections of cylinder to
tailpipe using oxygen compatible leak detector solution.
5.2
During Cylinder Replacement.
5.2.1
Visually inspect each tailpipe for cleanliness and
pipe damage. Don't use and immediately replace dirty or
damaged tailpipes.
4109992485.00
5.2.2
Check leaks at the connections of cylinder to
tailpipe using oxygen compatible leak detector solution.
5.3
Daily Inspection.
5.3.1
Visually inspect manifold for normal operation.
Record controller display status (e.g. running bank).
5.3.2
Record left and right bank pressure gauge
readings.
5.3.3
Record line pressure gauge reading.
5.3.4
Check visual indicators for correct function and
message, see section 4 figure 25 for reference.
WARNING! If the manifold is being used as an
emergency backup manifold, and either cylinder bank is
observed to be in low pressure, replacements for empty
cylinders should be made available immediately.
5.3.5
Check manifold pressure gauges for abnormal
conditions, see section 4 figure 25 for reference.
5.3.6
Check manifold for unusual noises or vibrations.
5.3.7
Check that all cylinders are properly secured
and that batch labels are correct and in date. Replace as
necessary.
5.4
Monthly.
5.4.1
Verify the operation of manifold changeover
system using Performance Verification Procedure.
5.4.2
Perform pressure and function inspection.
5.4.3
Check the line pressure on the running cylinder
bank is normal, typically as per section 4.1 table 6. See
section 4.5 if adjustments are required.
5.4.4
Switch the supply over to the standby cylinder
bank (see section 4.7, figure 30), and check the line
pressure is still within normal supply.
5.4.5
Close the line isolating valve on the manifold
slowly and confirm that there is no effect on the line
pressure to the hospital. Open the isolation valve when
finished.
5.4.6
Check that the manifold relief valves are not
passing by disconnecting the downstream exhaust
coupling and inspecting for a gas leak. Also check the
condition of the seals (See figure 33). Replace the valve
or seals as necessary. Reconnect the exhaust pipework,
ensure the O-ring seals correctly in place.
5.4.7
Close one cylinder valve and disconnect the
tailpipe at the cylinder end (see figure 34). Listen for a
leak from the tailpipe. A minor leak is permissible and
likely but an obvious major leak denotes failure of the
30
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