GeneralAire GA50A20 - Manual (Page 2)

CONTENTS
Certified for shock and electrical fire hazard only.
SAFETY CONSIDERATIONS
Read and follow instructions carefully. Follow all local
electrical codes during installation. All wiring must conform
to local and national electrical codes. Improper wiring or
installation may damage Air Cleaner.
Understand the signal words WARNING and
CAUTION which are present in the Owner’s Manual.
WARNING and CAUTION signifies a hazard which
could result in property damage, personal injury or death.
Installation and servicing of Electronic Air
Cleaners can be hazardous. Only trained and qualified
service personnel should install, repair, or service
Electronic Air Cleaners.
Homeowners or untrained personnel can perform
the basic maintenance functions of cleaning and
replacing filters.
When working on air cleaning equipment, observe
precautions in the manual, labels attached to the unit,
and other safety precautions that may apply. Follow
all safety codes. Wear safety glasses and work gloves.
WHAT THE ELECTRONIC AIR CLEANER DOES
Your High Efficiency Electronic Air Cleaner has been
designed to remove atmospheric and household dust, coal
dust, insecticide dust, mites, pollen, mold spores, fungi,
bacteria, viruses, pet dander, cooking smoke and grease,
tobacco smoke particles, and more down to .01 micron
(.01 micron = 1/2,540,000 of an inch).
BENEFITS
Helps provide relief for allergy or asthma suffering.
Helps prevent damaging black dust from staining walls
and furnishings, reducing the amount of time and
money spent cleaning and redecorating.
Helps eliminate unpleasant odors (with use of optional
Carbon Filters).
Helps protect heating/cooling equipment, prolonging
the operating efficiency.
HOW IT WORKS
The High Efficiency Electronic Air Cleaner operates on
the principle of electrostatic precipitation. Millions of
airborne pollutants are carried through the return air ducts
of the heating/cooling system and treated through four
stages of filtration.
The prefilters (2) remove all large visible particles such
as lint. Smaller particles then pass through a two-stage
electrostatic collecting cell (2). First, particles are given a
powerful positive electrical charge by the ionizing wires.
Second, charged particles move into the collecting area
IMPORTANT: Please read entire instructions before
installing the Electronic Air Cleaner.
WARNING
Before beginning any installation or modification, be
certain that the main line electrical disconnect switch is
in OFF position. Electric shock could result. Tag
disconnect switch with suitable warning labels.
SAFETY CONSIDERATIONS 2
WHAT THE ELECTRONIC AIR CLEANER DOES 2
BENEFITS 2
HOW IT WORKS 2
SPECIFICATIONS 3
COMPONENTS 3
INSTALLATION 3-5
Static Pressure 3
Location 3
Installation Location With Humidifier 4
Installation Location With Air Conditioner 4
Electronic Air Cleaner Installation 5
Wiring 5
SYSTEM CHECK 5
OPERATION 6
WHITE DUST 6
MAINTENANCE 6
Cell and Prefilter Cleaning 6
Activated Carbon Filter Replacement 6
SERVICE 7-10
Quick Check 7
Testing For High Voltage At Power Board 7
Measuring High Voltage At Power Board 7
Replacing Performance Light 7
Replacing A Power Board 8
Testing Air Proving Switch (APS) 8
Replacing An Air Proving Switch (APS) 8
Testing The 24 V Transformer 8
Replacing The 24 V Transformer 8
Setting Voltage Of Power Board 9
Setting Voltage Without High Voltage Meter 9
Testing For Voltage At The Cell 9
Testing Cell For Bad Contacts 9
Testing Cell with an Ohmmeter 9
Removing Power Box 10
Replacing A Tungsten Ionizing Wire 10
EXPLODED VIEW 10
PARTS LIST 11
TROUBLESHOOTING GUIDE 12
WARRANTY 15
2
Fig. 1
2 Prefilter
3 Ionizing Section
4 Collecting Cell Plates
5 Carbon Filters (3)
(optional)
1 Dirty Air
6 Clean Air to Heating/
Cooling System