Carrier Airaaxcc20a Owners Manual

POWER SUPPLY
If output light remains out with cells removed, the trouble is in the
power supply. Specific problems in power supply assembly can be
isolated by using a multimeter and high-voltage probe to check for
proper output voltages.
To properly check power supply, follow these steps.
1. Remove power supply access cover.
2. Make sure control switch is on and input voltage is 120v, 60
Hz.
3. Set multimeter to read AC voltage. Use 200-v full scale
setting. With test leads attached to multimeter, touch...

An ionizing-collecting cell that has been damaged, where the
designed spacing between electrically charged and ground com-
ponents has been decreased, may also produce an abnormal
amount of ozone.
Step 3ÐHigh Altitude Operation
Because air is less dense at higher altitudes, there is a possibility
of nuisance arcing. To reduce this annoyance, refer to the
following note. Cutting of red jumper wire will reduce voltage and
eliminate arcing. The red jumper wire must be cut in installations
of over 5,000 ft...

Fig. 20ÐWiring for High Altitude Operation
A97173
Fig. 21ÐAirflow Sensor Kit Installation
A97174
AC AC TR TR
C1
D1 R5R4
PC BOARD 
MOUNTING
CLIPS
BLUE
YELLOW
13 

Fig. 22ÐView of Major Components
A97175
OPTIONAL
CELL CONTACT
14 

Fig. 23ÐTroubleshooting the Duct Mount Electronic Air Cleaner
A97176
Is green light on?
Ye sYe s
Ye s
Ye s
Ye s
Ye s No No No No No No
No No No Ye s
Ye s
Ye s
Ye s Ye s
Ye s
Ye s No No
No Is red light on?
Is cell crackling and snapping?
Is cell sizzling?Is transformer defective? Is power supply defective? Is power supply wiring OK? Are contact boards OK? Is cell dirty or defective? Is ON/OFF switch working? Is the safety interlock system OK? Is input AC power available? Is unit operating?1.	 Repair or...

A94328
SERVICE TRAINING
Packaged Service Training programs are an excellent way to increase your 
knowledge of the equipment discussed in this manual, including:
		 • Unit Familiarization		 • Maintenance
		 • Installation Overview	 • Operating Sequence
A large selection of product, theory, and skills programs is available, using popular 
video-based formats and materials.  All include video and/or slides, plus companion 
book.

Classroom Service Training plus hands-on the products in our labs can...