Page 10-20 LTV
®
Series ventilator Operator’s Manual
p/n 10664, Rev. Y
Valve Home Position
Use the Valve Home Position option to view the home position for the LTV’s flow valve. The home
position is displayed as: VHome xxx where xxx is the home position for the valve installed in the
ventilator.
The home position is determined by the revision of the flow valve and is set when the ventilator is
manufactured or when the flow valve is replaced.
Set Defaults
The SET DEFAULTS option is only displayed and accessed through the Ventilator Checkout menu
(VENT CHECK) or Ventilator Maintenance menu (VENT MTNCE) and is used to reset user settable
Controls and Extended Features settings to their factory-set default values. See Chapter 9 - Ventilator
Alarms, DEFAULTS for factory-set default values.
To enable the Ventilator Checkout menu:
To enable the Ventilator Checkout menu, the patient must be disconnected from the ventilator
(ventilate the patient using an alternative method of ventilation), the ventilator must be turned off, and
a special power on sequence used to turn it back on. See Chapter 11 - Ventilator Checkout Tests for
important information and instructions, prior
to proceeding.
To set the default values:
1) When the VENT CHECK menu is displayed, turn the Set Values knob until VENT OP is
displayed and push Select.
2) Turn the Set Values knob until DEFAULTS is displayed and push Select. SET DEFAULTS will
be displayed.
3) Push Select while SET DEFAULTS is displayed. DEFAULTS will be displayed.
• Except for the Language selected and the Date/Time settings and format, all user settable
Controls and Extended Features options are reset to their factory-set default values.
• A DEFAULTS event is recorded in the Event Trace log (see Appendix E - Event Trace for
additional information) along with the date and time the settings were reset.
To exit the Ventilator Checkout menu and enter normal ventilation mode:
1) Turn the Set Values knob through the Ventilator Operations sub-menus until EXIT is displayed,
and push the Select or Control Lock button. VENT OP will be displayed.
2) When VENT OP is displayed, turn the Set Values knob until EXIT is displayed, and push the
Select or Control Lock button.
• POST will be performed, the ventilator will begin ventilation using the factory set default
settings and a DEFAULTS SET alarm will be generated (see Chapter 9 - Ventilator Alarms,
DEFAULTS SET for additional information and instructions to reset the DEFAULTS SET
alarm).
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