SECTION 2
SERHT50NA A0808 2-3
Controls/Alarms/Monitors Range/Selection
18. F
I
O
2
0.21 to 1.00
(with optional accessories)
19.
On / Standby Button Press once to put in Setting condition. (On-Setting/LED off)
Press again to begin v
entilating (On-Ventilating/LED on).
When the HT50 is ventilating, press two times to put ventilator
into Standby/Off condition (LED off).
20. Push To Unlock Buttons & Pressing button unlocks front panel buttons if locked by
Indicator automatic panel lockfeature. Auto lock is enabled/disabled in User
Set Up
. LED lights to indicate panel is locked.
21. Alarms
▲Paw (High Pressure) 4 to 99 cmH
2
O / 4 to 99 mbar, must be 1< Low Paw
▼Paw (Low Pressure) 3 to 98 cmH
2
O / 3 to 98 mbar, limited by > PEEP + 3 and High
Paw -1
Low Baseline Pressure Paw <
PEEP - 3 cmH
2
O/mbar for 3 sec during exhalation
High Baseline Pressure Paw >
PEEP + 8 cmH
2
O/mbar at onset of a breath or 3 sec
after the start of exhalation
Occlusion Paw >
PEEP + 15 cmH
2
O/mbar at onset of a breath or 3 sec
after start of expiration
Apnea 30 sec ± 3 sec
PCV Not Reached Paw P < 50% of PCV setting
▲V
•
I
Insp. Min. Volume 1.1 to 50.0 L/min
▼V
•
I
Insp. Min. Volume 0.1 to 49.0 L/min
Check Prox Line Prox Paw does not match machine Paw during inspiration
Humidifier (5 messages) Humidifier malfunction/disconnection
Power Switchover External power to internal battery switchover alert
Battery Low Minimum of 30 minutes battery time remains until shutdown
Battery Empty Minimum of 15 minutes battery time remains until shutdown
NOTE: The time between the Battery Low Alarm violation and the Battery Empty Alarm violation
will vary depending on the v
entilator load. At high volumes and pressures, the Battery Empty
Alarm will occur much sooner after the Battery Low Alarm, than it will at lower volumes and
pressures. In all cases, the stated minimum times for each alarm will be met, even if the two
alarms occur almost simultaneously.
Device Alert (5 messages) Ventilator malfunction: FAULT BAT SYS, OCCLUSION, 10V
SHUTDOWN, SYSTEM ERROR or MOTOR FAULT
Shut Down Alert On to Standby/Off Shut Down Alert
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