Operating instructions

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Inflating these bolsters increases bolster height on the sides of the
mattress. Integrated bolsters and raised bolsters are inflated to 60 mmHg.
This value is not adjustable.
4.3 Additional Functions
LOCK KEYPAD (All Sentry/ST Systems)
This key locks all keys, including the Power ON/OFF key. Press and hold
for 2 seconds to activate. The corresponding blue LED is lit. Press and
hold for 2 seconds to unlock. In the event of a power outage or being
unplugged, the Lock function will deactivate and must be reset when
power is restored.
ALARM FUNCTION
The Sentry/ST System is equipped with an audible alarm to alert the user
that the actual pressure in the air cells is below or above the set pressure.
An error message will also appear on the display instructing the user to
“Check Air Cells”. This will happen in approximately 10 minutes. The alarm
and error message will continue until the problem is resolved, unless in AP
mode. See NOTE below.
NOTE: In AP mode, once the problem is resolved, it takes two cycles for
the alarm to stop. The unit may also be turned off for 10 seconds and
turned back on to reset the alarm more quickly.
Refer to Troubleshooting guide for further instructions.
See Section 6.0
AUDIBLE ALARM MUTE (All Sentry/ST Systems)
This key mutes the AUDIBLE ALARM. When the ALARM MUTE key is
pressed, the AUDIBLE ALARM cannot be heard, but an error message
continues to flash on the display and a solid blue LED activates. If the
alarm condition is not resolved within 15 minutes the audible alarm will re-
activate. In the event of a power interruption, the Alarm Mute function will
deactivate. (See Troubleshooting Guide in Section 6.0).