AirSep MN134-1 B - Manual (Page 23)

MN134-1 rev B
02/14
18
I /0 Power Switch Installation
Follow the removal procedure for the I /0 power switch in reverse order to install a
new power switch.
1. Be sure to reinstall the new switch properly with the orientation of the “0”
on the switch located on the bottom when finished.
2. Same side wire connections of power switch can be made to either terminal.
5.12 Buzzer Replacement
1. Set the unit’s I /0 switch to the “0” position and disconnect the power cord.
2. Remove the left side panel.
3. Unscrew the two Phillips-head screws that hold the buzzer to the superstructure,
and solder to disconnect the buzzer leads.
4. Solder the leads to the new buzzer, and screw the buzzer to the superstructure.
5. Reconnect the side panel.
5.13 Hour Meter Replacement
HM009-2 is a dual function hour meter. It has a selection switch accessible by a pinhole in
the upper right corner of the hour meter.
To toggle between display modes - press in the switch once using a small paperclip.
1. ‘TMR1’ mode displays accumulated hours, which can be reset to zero hours by pressing
and holding the switch in until 0.0 is displayed (approximately 3 seconds).
2. If ‘TMR1’ is not displayed, then total operating hours of unit is displayed.
1. Set the unit’s I /0 switch to the “0” position and disconnect the power cord.
2. Remove the left side panel.
3. Disconnect the hour meter leads.
4. Push hour meter mounting tabs inward from the hour meter.
5. Remove the hour meter through the control panel.
6. Install the new hour meter into the control panel, making sure the hours are
displayed on top. (Hour glass icon should be located on bottom of hour meter when
properly installed).
7. Reconnect the hour meter leads.
8. Reconnect the side panel.
5.14 Flowmeter Replacement
Flowmeter Removal
To remove the flowmeter, follow the steps below:
1. Set the unit’s I /0 switch to the “0” position and disconnect the power cord.
2. Remove the side panel.
3. Cut the tie-wraps, and remove the ¼-inch green oxygen tubing from the
flowmeter fittings.
4. Unscrew the flowmeter nuts with a wrench.
5. Remove the flowmeter through the control panel.
Flowmeter Installation
To install a new flowmeter, follow the flowmeter removal procedure in reverse
order. Leak test the tubing connections.
5.15 Power Cord Replacement
1. Set the unit’s I /0 switch to the “0” position, and disconnect the power cord.
2. Remove the side and back panels.