Operator’s Manual LTV
®
Series ventilator Page 9-29
p/n 10664, Rev. Y
LOCKED
The LOCKED message is displayed when a button is pushed while the controls are locked. No
audible alarm is given.
When a LOCKED message is displayed:
• The LOCKED message is flashed in the display window for 5 seconds or until the controls are
unlocked.
• Control settings may not be changed.
There are two methods for unlocking the controls: EASY and HARD. The unlock method is selected
under the Extended Features menus
47
.
To unlock the controls with EASY unlocking:
1) Push the Control Lock button.
To unlock the controls with HARD unlocking:
1) Push and hold the Control Lock button for 3 seconds.
LPPS OFF
The LPPS OFF message is displayed when;
• The LPPS alarm is set to VC/PC ONLY (when this setting is selected, the Low Pressure alarm
applies only to Volume Control and Pressure Control breaths), and
,
• The LMV alarm is not set to dashes “- -”.
This is an informational message only. The message is displayed at power up, when monitored data
is being scrolled automatically, and when no front panel activity is detected for 60 seconds.
To clear the LPPS OFF message:
1) Push any front panel button or turn the Set Value knob.
This message is not displayed in NPPV mode.
47
See Chapter 10 - Extended Features, Control Unlock for more information.
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