BeaconMedaes HTM02-01 Operation & Maintenance Instructions Manual page 19

Emergency Reserve Manifold
(b) all system pressures are normal;
(c) all alarms are showing "green" normal
lamps;
(d) the automatic manifold main isolating
valve is open; and
(e) the manifold is supplying the hospital.
5.3.2 Close the isolating valve on the ERM slowly
and confirm that there is no effect on the line
pressure to the hospital.
5.3.3 Open all cylinder and header high-pressure
isolating valves.
5.3.4 Check that the ERM safety valves are
not passing, by disconnecting their downstream
exhaust coupling and inspecting for a gas leak and
check the condition of the seals (See figure 14).
Replace the valve or seals as necessary. Reconnect
the exhaust pipework, ensure the O-ring seals
correctly in place.
Figure 14 - Relief Valve Inspection
2nd stage relief valve
1st stage relief valve
5.3.5 Close one cylinder valve and disconnect
the tailpipe at the cylinder end (see figure
15). Listen for a leak from the tailpipe. A minor
leak is permissible and likely but an obvious major
leak denotes failure of the manifold non-return
valve (NRV). If the latter happens, do not totally
detach the tailpipe but instead retighten it and test
other tailpipes in the same way. Any failed NRV's
can be replaced (see section 6.8) after all cylinder
valves have been closed and the system has been
depressurised. Repeat this test when the new
NRV's have been fitted (See figure 15 and section
4.7 - Cylinder Operation).
Figure 15 - Manifold header Non-Return Valve
Inspection.
5.3.6
cylinder and bank valve on 1 side of the ERM is
open (see figure 1). Open Valve 'C' and probe
the sampling outlet to produce a steady flow and
check the pressure on the line gauge does not dip
by more than 10%. If possible attach a flowmeter
to the sampling outlet and pipe away to a safe
location while performing this test. Close valve 'C'
when finished.
manifolds ensure that the manifold room is well
Flat face
ventilated and no potential ignition sources are
connector
present while running this test. Run this test
with O-ring
for as short a time as possible. Oxygen can be
seal & swivel
absorbed into clothing etc., so once the test is
nut
complete it would be recommended to spend at
least 20 minutes out doors to ensure the oxygen
has released. During this time stay away from
naked flame, do not smoke etc. Do not perform
this test unless the risks can be kept within an
acceptable level.
5.3.7
(should be typically as per table 4 in section 4).
Observe this pressure for typically 10-20 minutes
to ensure that there is no regulator creepage.
Excessive creepage will necessitate replacement
(see section 6.3) and a repeat of this test.
5.3.8
open one cylinder/header isolating valve until the
cylinder content gauge indicates full pressure, and
then close the valve.
19
Ensure the line valve 'B' is closed and one
CAUTION: For anaesthetic and oxygen
Check the static pressure of the regulator
To test the "reserve low" contact gauge,
Bodok Seal
Tailpipe to
cylinder
connection
Typical Cylinder
Valve
2005715.05