LTV 1150 - Page 290

Page A-4 LTV
®
1200/1150 Ventilator Service Manual p/n 18603-001, Rev. C
Fixed Alarms
Control Range Tolerance / Indicators
Default Settings EEPROM problem detected n/a
DISC/SENSE
(Low Pressure Sense
Line Disconnect)
Positive (exhaled) airway flow
during first 200 ms of
inspiration and exhaled tidal
volume (Vte) of previous
breath is more than 4000 ml
n/a
DISC/SENSE
(High Pressure Sense
Line Disconnect)
Airway pressure changes by <
1 cmH
2
O during 200 ms after
inspiratory start
OR
After initial 200 ms of
inspiration airway pressure
drops below 0.125 cmH
2
O and
can’t be raised more than 0.5
cmH
2
O in next 500 ms
± 0.5 cmH
2
O
n/a
External Power Lost <9.5 V
± 2%
Hardware Fault
Hardware problem detected
n/a
Internal Battery Empty < 11.5 V
± 2%
Battery Level
LED Red and
full volume
audible alarm.
Internal Battery Low < 11.9 V
± 2%
Battery Level
LED Amber
Oxygen Inlet Pres. High
(LTV
®
1200 Only)
High pres source: 85 PSIG
Low pres source: 10 PSIG
± 2 PSIG
± 1 PSIG
Oxygen Inlet Pres. Low
(LTV
®
1200 Only)
< 35 PSIG
± 2 PSIG
Reset Processor problem detected n/a
Transducer Fault Autozero value outside
manufacturer’s specifications
n/a
SBT Off End of an SBT period n/a
SBT Time Two minutes remaining in an
SBT period
n/a
,
Volume
Alarm Volume 60 to 85 dBA at one meter
± 5 dBA
Vent Inop