2.2.1.5
High Temperature Shutdown Alarm (Medical Air Systems)
Provide temperature switch to activate an alarm and shutoff the compressor
when the discharge-air temperature exceeds 177 degrees C 350 degrees F.
2.2.1.6
High Carbon Monoxide Level Alarm (Medical Air Systems)
For compressor with carbon monoxide monitor only, provide local
non-cancellable visual and cancellable audible alarm to alarm when carbon
monoxide levels rises above 15 milligram per kilogram parts per million.
2.2.1.7
Oil Filter Alarm (Vacuum Pumps)
Provide differential pressure switch for the discharge-oil filter to
activate an alarm upon sensing backpressure or rising pressure drop beyond
a set level.
2.2.1.8
Low Vacuum Alarm (Vacuum Pumps)
Provide vacuum switch to activate an alarm when the system vacuum upstream
of shutoff valve drops below 41 kPa 12 inches Hg.
2.2.1.9
Bulk Liquid Oxygen Low Level Alarms (Bulk Liquid Oxygen System)
Provide the following alarms:
a.
A "Reserve In-Use" alarm to function when liquid oxygen in
converter tank reaches a predetermined minimum level or when
"Reserve In-Use" switchover is activated.
b.
A low level alarm for reserve tank.
c.
A low pressure alarm in reserve tank.
d.
A low level alarm for main tank.
2.2.2
Medical Gas Cylinder Manifold Systems
Provide non-ferrous manifold, fittings, valves, parts, and connections
rated at 20,682 kPa (gage) 3000 psig working pressure for each type of
medical gas as indicated. Non-ferrous materials include aluminum, brass,
bronze, monel, and inconel.
2.2.2.1
Cylinder Banks
[Duplex] manifold arrangement with [_____] cylinder connections per bank.
Provide each bank with a two-stage pressure regulator with built-in safety
valves and pressure gages, check valves, cylinder connecting coils and
handles, header valves, and all other required equipment. Pressure
regulator shall reduce 20,682 kPa (gage) 3000 psig cylinder pressure to 379
kPa (gage) 55 psig for system delivery. For nitrogen cylinder banks, the
system delivery pressure may be 1379 kPa (gage) 200 psig instead of 379 kPa
(gage) 55 psig.
2.2.2.2
Bank Switch-Over
**************************************************************************
NOTE: Delete the bracketed sentence for systems
with less than six cylinders.
SECTION 15217N
Page 19
Previous Page
