Sentry Industries PR911 - Manual (Page 13)

CARE AND MAINTENANCE
GENERAL
Use a soft, clean cloth moistened with plain, luke-warm water to clean the exterior of the unit.
Never use solvents such as benzene or other strong chemical cleaners since these could damage the unit's finish.
It is important that no liquid reaches the inside of the unit.
POWER DURATION
GENERAL
RADIO FLASHLIGHT BLINK/SIREN
10 days with new alkaline batteries/ 8 hours with fully
charged built-in NiCad battery. 1 day with new alkaline batteries/ 1 hour with fully
charged built-in NiCad battery. 2 days with new alkaline batteries/ 2 hours with fully
charged built-in NiCad battery.
TROUBLE SHOOTING GUIDE
PROBLEM POSSIBLE CAUSE SOLUTION
No sound is heard. Power is not on.
VOLUME Control is set to minimum.
Station has not been tuned properly.
FM reception is weak.
AM reception is weak.
Select appropriate power source.
Adjust the VOLUME Control.
Tune station properly.
Extend the FM antenna.
Adjust the position of the unit.
GENERAL
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PMMU-0038-0105