LTV 1150 - Page 282

Page 9-26 LTV
®
1200/1150 Ventilator Service Manual p/n 18603-001, Rev. C
LTV
®
1200/1150 SERIAL NUMBER: _____________
TEST
DESCRIPTION
STEP
#
MEAS.
VALUE
REQUIREMENT
PASS
/ FAIL
Solenoids
Step position 100, turbine speed 4000
9)A)
ExhPilot solenoid deactivated (OFF): Pressure at exhalation drive port must = 0 ±
0.1 cmH
2
O
ExhPilot solenoid activated (ON): Pressure at exhalation drive port must be
≥14 cmH
2
O
Step position 100, turbine speed 4000
9)B)
Purge solenoid deactivated (OFF): Pressure at the High & Low flow transducer
ports = 0 cmH
2
O
Purge solenoid activated (ON): Pressure at the High & Low flow transducer
ports ≥ 14 cmH
2
O
PPin and PPout solenoids activated
(ON):
9)C) Pressure at the exhalation drive port must
be ≥14 cmH
2
O
Turbine speed 10
9)D)
PPP pressure displayed must be ± 0.5 of
the applied pressure
PPin solenoid deactivated (OFF):
Leakage rate must be ≤ 1 cmH
2
O within one
minute
PPout solenoid deactivated (OFF): 9)E) Pressure at exhalation drive port must = 0 ±
0.1 cmH
2
O
15 cmH
2
O to high flow transducer port: 9)F)
Apres solenoid activated (ON):
AP: 0 cmH
2
O ± 0.5 after activation
FDw: 0 cmH
2
O ± 0.5 after activation
15 cmH
2
O to low & high flow transducer
ports:
Pinch off inlet pressure, purge solenoid
activated for 3 sec., then deactivate.
9)G)
Calculated change in Pressure:
FDw display must not change by more than
0.5 cmH
2
O before and after activating
solenoid
15 cmH
2
O to low & high flow transducer
port:
9)H)
ExhDiffP solenoid deactivated (OFF):
FDw display must read 0 ± 0.5 cmH
2
O
ExhDiffP solenoid activated (ON):
FDw display must read AP ± 0.5 cmH
2
O
15 cmH
2
O to high flow transducer port: 9)I)
Pinch off the input pressure line
FDw display must read 15 ± 0.5 cmH
2
O