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10
SERVICE INDICATION SERVICE CHECKS
ON/OFF switch “ON” Unit functioning Normally
Blower ON
Operating Light ON
ON/OFF switch “ON” 1. Power is not being supplied to air cleaner.
Blower ON A. Check fuse or circuit breaker.
Operating Light OFF B. Ensure power pack is properly installed and latched.
2. Collecting cell shorted - Turn power Off - Remove power pack - Remove
collecting cells - Replace power pack - Restore power (ensure blower is
operating).
A. If Operating Light comes ON check cells for bent plates, loose ionizing
wire(s) or cracked insulator(s).
B. If Operating Light remains OFF, malfunction is in the power pack. (See
power supply Checkout Procedure).
Excessive arcing during 1. Wet collecting cell.
normal operation - A. Allow cell(s) to dry after cleaning before applying power.
Operating Light may blink 2. Damaged collecting cell(s).
A. Remove cell(s) and inspect for bent plates, loose ionizing wire(s), cracked
insulator(s), etc.
3. Collecting cells dirty.
A. Clean cells as instructed in this manual.
4. Faulty power supply (see power supply checkout procedure)
BASIC UST SERVICE GUIDE
This guide will cover most homeowner complaints. If, after checking the items listed, the unit still fails to operate
properly, contact the nearest Authorized Service Center.