CAIRE FreeStyle Manual page 74

the historical hour meter will function. The hour-glass icon will flash to indicate that time is being
accumulated.
Toggle/Reset Switch
This switch (showing in Figure 20) toggles the display or resets the maintenance channel
depending on the activation time and the current display mode.
Upon power-up, the display defaults to the historical display mode. The display will remain in
historical mode until the pushbutton is used to toggle the display into maintenance mode. The
hour meter will remain in this mode until toggled or until power is removed. The hour-glass
icon will remain on and the "TMR1" icon will be displayed below the hour-glass icon. As with
the historical display mode, the hour-glass icon will flash to indicate that time is being
accumulated and the TMR1 icon will remain on solid. The historical channel cannot be reset. To
reset the maintenance channel, begin with the module in maintenance mode, and then press
the toggle/reset switch for five seconds. A reset is indicated by a "0" display.
HOUR METER REPLACEMENT FOR FREESTYLE ONLY
When removing the front cover to replace the hour meter on a
FreeStyle, always use an ESD safe-work area. Also, use an ESD wrist
strap to protect electronic circuitry.
1. Remove the front cover housing per the HOUSING REMOVAL section of this manual.
2. Ensure that all power sources are disconnected.
3. Locate the hour meter (shown in Figure 20).
4. Using a small Philips head screw driver, remove the 2 screws.
5. Gently pull upward to remove the hour meter from the 8-pin connector (J3). When
removing, take care not to bend or break any pins on the J3 connection header.
6. Replace hour meter.
FREESTYLE 5 HOUR METER FUNCTIONALITY
The Freestyle 5 logs the hours of use on the internal circuit board. An interface kit can be purchased
that allows you to retrieve this hour reading. The Hour Meter Kit can be ordered through CAIRE
Customer Service (1-800-482-2473) by using PN KI406-1.
Portable Oxygen Concentrator
MN220-1 B 74