Thor Motor Coach Class B+ Owner's Manual page 29

Identification and Safety
Testing Procedure
28
The smoke alarm will only indicate the presence of smoke that reaches the sensor.
The smoke alarm is not designed to sense gas, heat or flames.
The CO alarm is not designed to detect fire or any other gas. It will only indicate the
presence of CO gas at the sensor. CO may be present in other areas.
For instruction on programming the alarm refer to the Smoke Alarm User's
Manual within your Owner's Packet for detailed setup information.
It is important to test this unit every week to make sure it is working properly. Using the
test button is the recommended way to test this Smoke Alarm. Press and hold the test
button on the cover of the unit until the alarm sounds (the unit may continue to alarm
for a few seconds after you release the button). If it does not alarm, make sure the
unit is receiving power and test it again. If it still does not alarm, replace it immediately.
During testing you will hear a loud, repeating horn pattern: 3 beeps, pause, 3 beeps,
pause; and the Red LED will flash rapidly.
Note:
If the unit does not alarm, make sure the batteries are correctly
installed and test again. If the unit still does not alarm, replace it
immediately.
The motorhome should never be operated or occupied
unless the smoke detector is present and functioning
properly.
Never remove a fuse or battery providing power to a
carbon Monoxide, LP, or Smoke alarm for the purpose of
turning the alarm off.
DO NOT STAND CLOSE TO THE ALARM WHEN THE
HORN IS SOUNDING. Exposure at close range may be
harmful to your hearing. When testing, step away when
the horn starts sounding.
NEVER USE AN OPEN FLAME OF ANY KIND TO TEST
THIS UNIT. The built-in test switch accurately tests
the unit's operation as required by Underwriters
Laboratories, Inc. (UL).