Physio-Control LUCAS - Manual (Page 26)

26 100057-00 F, ©J OLIFE AB 2007
LUCAS TM C HEST C OMPRESSION S YSTEM , I NSTRUCTIONS FOR U SE
2$
2%
6.1.1 C HECKING A PRESSURE REGULATOR
If a flow rate performance diagram exists:
1. Check that the nominal output pressure for the
pressure regulator is within 46-87 PSI (3.17-6
bar).
2. Find the regulator output pressure ( Bar ) in
Figure 2$ and obtain the minimum free flow
rate (
L/min
) from the diagram. The example in
Figure 2$ shows a regulator output pressure of
66.7 PSI (4.6 bar).
3. From the flow rate performance diagram for
the pressure regulator, obtain the output
pressure for the regulator at the minimum free
flow rate. Calculate the pressure drop.
4. Check that the calculated pressure drop does
not exceed the maximum allowable pressure
drop (
ΔP ) at the nominal pressure ( Bar ),
obtained from Figure 2% .
If no flow rate performance diagram exists, follow
the instructions in Section 6.1.2 to check your
pressure regulator.
6.1.2 C HECKING A WALL OUTLET
1. Measure and verify that the nominal supply
pressure is within 46-87 PSI (3.17-6 bar).
2. Find the nominal supply pressure ( Bar ) in
Figure 2% and obtain the minimum free flow
rate (
L/min
) from the diagram. The example in
Figure 2% shows a nominal supply pressure of
66.7 PSI (4.6 bar).
3. Measure the supply free flow rate and restrict
the flow to the minimum required free flow
rate obtained from Figure
2% .
4. Measure the supply pressure at the minimum
required free flow rate. Calculate the pressure
drop.
5. Check that the calculated pressure drop does
not exceed the maximum allowable pressure
drop (
ΔP ) at the nominal pressure ( Bar ),
obtained from Figure 2% .