Penlon Prima 451 - Pre-Use Checks - Gas Supply; Gas Pipeline Supplies; Gas Cylinder Supplies

Prima 451 – User Manual 21
Installation and Pre-use Checks
5.2 Pre-use Checks - Gas S upp l y
5.2.1 Gas Pipeline S upp li e s
C A U TIO N
When connecting pipeline hoses, always ensure that each
supply hose is connected to the correct gas inlet, and that a
gas-tight connection is achieved.
Oxygen
s upp l y :
1. Connect the oxygen pipeline hose on l y .
Check that the correct pressure gauge reading is
obtained.
2. Turn on the Gas Delivery switch (1).
Check that the correct basal flow of oxygen is delivered
(see section 4.8).
3. Open both oxygen and nitrous oxide flowmeter valves.
Check that flow is only shown in the oxygen flowmeter.
4. Close both valves.
Turn off the Gas Delivery switch.
Check that the oxygen basal flow is stopped.
Nitrous Oxide s upp l y :
5. Connect the Nitrous Oxide pipeline hose.
Check the gauge reading.
Turn on the Gas Delivery switch (1).
Check for a flow of nitrous oxide when the flowmeter
needle valve is operated.
NOTE: cylinder supply can be used if necessary for this
test.
Air
s upp l y :
6. Connect the Air pipeline hose.
Check the gauge reading.
Check for a flow of air when the flowmeter needle valve is
operated.
5.2.2 Gas
Cylinder S upp li e s
Warning
Use only non-magnetic cylinders with this machine. Steel
cylinders can cause serious injury or death if brought into
an MRI scanning room.
Caution
Open the cylinder valves slowly to avoid damage to the
pressure reducing valve and pressure gauges. Ensure that
valves are at least one full turn open when in use.
1. Fit the gas cylinders to their respective yokes, open the
cylinder valves one at a time and check the pressure on
each gauge.
NOTE
a) When two cylinders are provided for a single gas, test
each separately, clearing pressure after each test by
opening the flowmeter valve.
b) Turn off the reserve cylinders during normal use.
c) Nitrous oxide: cylinder pressure does not indicate
cylinder content.
2. Ensure that all flowmeters are kept closed until gas
supplies are required.
C
A U TIO N
The mechanical AHD system requires that
the oxygen flowmeter control is restricted to
prevent the needle valve from fully closing.
This ensures a minimum oxygen basal flow.
DO NOT attempt to close the flow to zero.
Do not overtighten the knob.
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