Invacare MA55 Owners Manual - Page 25

Powering Up the System

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5.1.8 Lock Button 1. Press the Lock button H to lock out all control unit functions, including the On button, to prevent any tampering with the settings. Press the button for approximately 3-5 seconds for the Lock LED to activate. The Lock LED illuminates when in this mode. 5.1.9 Alarm Silence Button 1. Press the Alarm Silence button I to silence the alarm that sounds in the event of power failure or when the hose is disconnected from the control unit. The Alarm LED illuminates when in this mode. 5.1.10 Power Fail LED In the event of power outage, an alarm sounds and Power Fail LED J flashes Amber. The control unit has internal memory and retains the previous settings during the power outage. During a power outage, the mattress retains the air as long as the mattress is connected to the control unit. Periodically test alarm by unplugging the power cord from the wall outlet while unit is on. See troubleshooting section of this manual if alarm fails to sound. 1148136-G Usage 5.1.11 Low Pressure LED In the event that the mattress hose disconnects, an alarm sounds and Low Pressure LED K flashes Amber. Once the low pressure problem is fixed, the control unit resumes operation in the previously set mode. Periodically test alarm by disconnecting the mattress hose. It may take up to 15 minutes for unit to lose enough air for alarm to sound. See troubleshooting section of this manual if alarm fails to sound. 5.2 Powering Up the System 1. Turn on the power to the system by pressing the Power button on the control unit. Once the button is released, a green led illuminates when the unit is on. 25

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Usage
5.1.8
Lock Button
1.
Press the Lock button
H
to lock out all control unit
functions, including the On button, to prevent any
tampering with the settings. Press the button for
approximately 3-5 seconds for the Lock LED to activate.
The Lock LED illuminates when in this mode.
5.1.9
Alarm Silence Button
1.
Press the Alarm Silence button
I
to silence the alarm
that sounds in the event of power failure or when the
hose is disconnected from the control unit.
The Alarm LED illuminates when in this mode.
5.1.10
Power Fail LED
In the event of power outage, an alarm sounds and Power
Fail LED
J
flashes Amber. The control unit has internal
memory and retains the previous settings during the power
outage.
During a power outage, the mattress retains the air
as long as the mattress is connected to the control
unit.
Periodically test alarm by unplugging the power
cord from the wall outlet while unit is on. See
troubleshooting section of this manual if alarm fails
to sound.
5.1.11
Low Pressure LED
In the event that the mattress hose disconnects, an alarm
sounds and Low Pressure LED
K
flashes Amber. Once the
low pressure problem is fixed, the control unit resumes
operation in the previously set mode.
Periodically test alarm by disconnecting the mattress
hose. It may take up to 15 minutes for unit to lose
enough air for alarm to sound. See troubleshooting
section of this manual if alarm fails to sound.
5.2
Powering Up the System
1.
Turn on the power to the system by pressing the Power
button on the control unit.
Once the button is released, a green led
illuminates when the unit is on.
1148136-G
25