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Medical Gas Supply System
6.8
Replace Medical Terminal Unit
Test Point.
Terminal unit capsule kit number, see table 13, chapter
7.
NOTE - The terminal unit test point has its own isolation
valve, so the manifold can continue to function as normal
while maintaining this unit.
6.8.1
Isolated the terminal unit from the valve shown
in figure 44.
6.8.2
Probe the terminal unit to vent the gas.
CAUTION! When exhausting anaesthetic and
oxygen manifolds ensure that the manifold room is well
ventilated and no potential ignition sources are present.
NOTE - If the unit is not fully vented after a few seconds,
ensure the isolation valve is closed.
6.8.3
Follow steps in 6.8.4 for 1
fix only or 6.8.6 for terminal unit capsule only.
Figure 44 - Terminal Unit Test Point Replacement.
Isolation
Valve
NOTE - Isolation valve is shown in its closed position.
fix only, 6.8.5 for 2
st
O-Ring
Seal
Disconnection
Point
M4
Nut and
Washers
Terminal
Unit Capsule
2
Fix
nd
1
fix
st
6.8.4
Replace the 1
44 for reference.
6.8.4.1 Thread an Allen key tool through the 2
the fasteners. Unfasten the 2
terminal unit.
6.8.4.2 Remove the check valve from the 1
unit.
6.8.4.3 Disconnect the 1/2" connection and remove the
2 x M4 nuts and washer.
6.8.4.4 Replace the O-ring with the new one in the
service kit.
CAUTION! Ensure the replacement unit is the
correct gas type.
6.8.4.5 Align the new 1
ensure the O-ring is correctly fitted then tighten the
connection point.
nd
6.8.4.6 Secure the 1
removed M4 nut and washers.
6.8.4.7 Insert the check valve from the old unit into the
new 1
fix.
st
6.8.4.8 Thread an Allen key tool through the old 2
socket to the fasteners. Fasten the 2
terminal unit.
6.8.4.9 Open the test point isolation valve and probe
the terminal unit to ensure there is gas flow.
6.8.4.10 Close the terminal unit isolation valve.
6.8.5
Replacing the 2
44 for reference.
6.8.5.1 Thread an Allen key tool through the 2
socket to the fasteners. Unfasten the 2
fix terminal unit.
6.8.5.2 Remove the check valve from the 1
unit.
CAUTION! Ensure the replacement unit is the
correct gas type.
6.8.5.3 Insert the check valve into the 1
with the new 2
fix.
nd
6.8.5.4 Thread an Allen key tool through the new 2
socket to the fasteners. Fasten the 2
terminal unit.
6.8.5.5 Open the test point isolation valve and probe
the terminal unit to ensure there is gas flow.
39
fix terminal unit only, See figure
st
fix socket from the 1
nd
fix terminal
st
fix with the 1/2" connection,
st
fix in place with the previously
st
fix to the 1
nd
fix terminal unit only, see figure
nd
fix from the 1
nd
fix terminal
st
fix, supplied
st
fix to the 1
nd
4109992485.00
fix to
nd
fix
st
fix
nd
fix
st
fix
nd
st
fix
nd
fix
st
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