LTV 1200 - Page 263

p/n 18603-001, Rev. C LTV
®
1200/1150 Ventilator Service Manual Page 9-7
G) Note the current usage meter. Usage Meter has incremented correctly.
H) Reset the time to current time.
NOTE
O
2
may exhaust from Air Inlet filter Port and falsely elevate reading. Do not permit
exhausted O
2
to enter via the fan intake.
8) Perform an Internal Oxygen Enrichment (oxygen leakage) test.
A) Connect an oxygen sensor with a
pump to draw flow through the O
2
Sampling Tube
69
installed prior to
replacing the back panel.
For the LTV
®
1200:
Connect a 50 ± 2 PSIG oxygen
source to the inlet port of the
ventilator’s Oxygen Blender and
set the O
2
% setting of the
ventilator to 100%.
For the LTV
®
1150:
Connect the O2 inlet port to an
oxygen source providing 1.0 to
1.5 PSIG of oxygen.
Operate the ventilator for a minimum
of 2 minutes.
While monitoring the peak O
2
%
value, extract the tube approximately
0.5 inch per breath.
Peak % O
2
measurement taken from inside
the unit must be < 25%.
69
O
2
Sampling Tube, P/N 10544, ~10.0” long, 0.125” O.D. X 0.079 I.D. clear polycarbonate tubing.