C-90A
Electronic Air Cleaner
2003
Service Information
C90ASI3(1-03)
Table of Contents
Page
Friedrich Electronic Air Cleaner ................................................................. 3
Specifications ............................................................................................. 3
CAUTION - Before Operation .................................................................... 4
Operating Your Friedrich Air Cleaner ......................................................... 4
How Electronic Air Cleaners Work ............................................................. 5
Cleaning
Important Precautions ....................................................................... 5
Cleaning the Pre-Filter ...................................................................... 5
Cleaning the Carbon Filter ................................................................ 5
Cleaning the Electronic Cell .............................................................. 6
Alternate Cell Cleaning Method ........................................................ 6
Discoloration of the Cell ............................................................................. 6
Replacing the Cell in Cabinet ..................................................................... 7
Activated Carbon Filter............................................................................... 7
Consumer Troubleshooting Guide ............................................................. 7
Troubleshooting Electronic Air Cleaner...................................................... 8
Wiring Schematic ....................................................................................... 9
Major Components ..................................................................................... 10
C-90A Electronic Air Cleaner Component Parts List ................................. 11
Authorized Warranty Repair Stations ......................................................... 12
Page 2
Friedrich Electronic Air Cleaner
The F riedrich Electronic Air Cleaner is a self-contained
console model consisting of a high voltage DC power
supply, electronic cell, 3 speed fan, pre-filter and
activated carbon post-filter in a rugged plastic cabinet.
It is designed to remove dust, tobacco smoke, pollen,
bacteria, and other airborne contaminants from the air.
In just minutes, you will notice improvements in your
indoor air quality as your Friedrich air cleaner begins
the job of removing the billions of irritating microscopic
particles from your home or office. The activated carbon
post-filter also helps eliminate many objectionable indoor
odors.
Specifications
MODEL C-90A
OPERATING TEMPERATURES
This air cleaner is intended for use at temperatures
normally found in occupied spaces.
ELECTRICAL RATINGS
115 Volt, 60 Hertz.
INDICATOR LIGHT
Located on the access cover next to 3-speed
switch. Indicates air cleaner operating properly.
INTERLOCK SWITCH
Interrupts supply power to unit when access cov er
is opened.
WEIGHT
35 lbs. shipping weight
30 lbs. net weight
DIMENSIONS
Height Width Depth
Cabinet 19" 15" 21 1/2"
Cell 16" 12 1/2"4 1/2"
Pre-Filter 15 7/8" 12 3/4" 1/4"
Carbon Filter 15 7/8" 12 3/4" 1/4"
NOMINAL CURRENT AND POWER CONSUMPTION
Power Supply 120 Volt, 60 Hertz
CFM Amps Watts
High Speed 410 .78 99
Medium Speed 340 .56 64
Low Speed 280 .41 47
Page 3
CAUTION - before operation . . .
• Remove the plastic cov er from the activated carbon filter
and install in unit.
• Position the pre-filter at the rear of the unit (closest to
the electronic cell) and the carbon filter at the front (side
air comes out.)
• Make sure the electronic cell is properly placed in the
cabinet - airflow arrow on the end plate should be
pointing toward the fan.
• Make sure that the top cover is securely in place.
• This unit is equipped with a grounded plug for your
protection against shock hazards and should be plugged
directly into a properly grounded receptacle.
• Electronic air cleaners should NOT be placed in any
area where potentially explosiv e gases or vapors exist,
nor should they be used in wet environments .
Operating your Friedrich air cleaner
CONTROLS
All controls for the F riedrich electronic air cleaner are located
on the top of the unit and are accessible through an opening
in the top cover. The controls are OFF - HI -MED - LOW.
Plus, an indicator lamp shows when the cleaner is on and
operating normally .
Generally, HIGH fan speed is used in extreme conditions
for rapid cleaning, such as after a party where there were
many smokers; or for large areas where HIGH f an is required
to circulate the clean air into all areas of the room. MEDIUM
and LOW settings are usually adequate to maintain a clean
air environment.
At initial start-up, the indicator lamp may flicker on and off
and is no cause for alarm. Should the lamp completely fail
to come on, review BEFORE OPERATING and
TROUBLESHOOTING sections.
During the initial use, "snapping" sounds may be heard.
This is normal and the unit may continue to make these
noises the first few da ys of operation. After the initial breakin period, only an occasional "snap" will be heard, indicating
the unit is cleaning your air. NOTE: As the air cleaner
electronic cell becomes dirty, it will “snap” more
frequently. When this occurs, you should consider
washing the cell.
LOCATION
The best location is a position closest to the concentration
of tobacco smoke or dust producing activities.
Position the unit so that the airflow around the intake and
discharge grilles is not blocked. For best results , do not place
the intake grille (rear) closer than 18 cm (8") from a wall.
Provide a clear, unobstructed path for the discharge air.
The farther the discharge air travels, the greater the
effectiveness of the air cleaner . For g reater comfort, position
the air cleaner so that the discharge air does not cause
uncomfortable drafts.
To use a room air cleaner most effectively in rooms that
share an open doorway or archway, position the unit near
the common opening and direct the airflow into the adjacent
room to promote good air circulation.
ECONOMICAL CLEAN AIR
The Friedrich electronic air cleaner costs no more to operate
than a standard household light bulb. The benefits from clean
air far outweigh the low operating costs of continuous
cleaning. Remember, the more you oper ate your electronic
air cleaner , the cleaner y our air will be.
Page 4
How electronic air cleaners work
Electronic air cleaners are an extremely efficient, cost effective method of removing indoor air contaminants. Unlike
standard media that merely block relatively large particles, electronic air cleaners attract and hold particles so small
that an electron microscope is needed to see them.
The PRE-FILTER catches lint, hair and large dust
1
2
particles, as room air is drawn in through the rear
grille by the powerful 3-SPEED FAN.
In the IONIZING SECTION of the ELECTRONIC
CELL, billions of microscopic particles, too small
to be caught by the pre-filter, become electronically
charged as they pass through a powerful electric
field.
COLLECTOR PLATES immediately attract and
3
4
hold these "charged" particles much like metal filings
are attracted to a powerful magnet. The
accumulated particles are permanently removed
from the air and cling to the metal plates until
washed off.
Finally , an A CTIV A TED CARBON FIL TER removes
most household odors and fumes as the clean air
is circulated back into the room.
Cleaning
IMPORTANT PRECAUTIONS
Turn off air cleaner before opening top cover to remove
electronic cell and pre-filter for cleaning. Alw a ys be careful
when handling the electronic cell. Sharp edges and wires
are capable of inflicting wounds. Care should also be taken
when cleaning because of extremely hot water and
potentially harmful effects of detergents on your skin.
The collector plates of the electronic cell and the pre-filter
can become extremely dirty. With an excessive amount of
contamination buildup on the collector plates and the prefilter, the electronic air filter's efficiency decreases. Also , as
dirt builds up on the ionizing wires, the charge process
becomes less efficient.
T o pre vent this loss of efficiency, the electronic cell and prefilter must be cleaned regularly. How often will depend on
actual usage. Cleaning will be more frequent if the air cleaner
is operated continuously or under sev ere conditions .
Pre-Filter
Ionizing
Section of
Electronic Cell
Collector
Plates
3-Speed
Fan
Carbon
Filter
CLEANING THE PRE-FIL TER
Remove the pre-filter and shake out or brush off the
accumulated dust and lint. If this is not adequate , a vacuum
may be used or the pre-filter can be cleaned with an all
purpose alkaline detergent based cleaner to remove tobacco
smoke and cooking grease stains. A thorough rinsing is
required after each cleaning.
After cleaning, allow to dry and reinsert.
CLEANING THE CARBON FILTER
Occasionally, the carbon filter will need cleaning. Use a
stream of air or a vacuum to remove the dirt. THE
CHEMICAL AND ODOR ABSORPTION CAPABILITIES
CAN NOT BE RESTORED. When the carbon filter can no
longer remove odors from the air, it must be replaced
(Friedrich part number 616-420-00). THE CARBON FILTER
MUST BE IN PLACE FOR THE AIR CLEANER TO
OPERATE.
Page 5
Cleaning (Cont.)
CLEANING THE ELECTRONIC CELL
The simplest method of cleaning the electronic cell is to use
an automatic dishwasher. The dishwasher provides the
correct cycle of wash, rinse and dry. Water temperatures
normally found in dishwashers 150°F to 170°F will not harm
the cell.
1. After turning off the air cleaner, remove the cell and
gently place on dishwasher rack with airflow arrows
pointing up. In some dishwashers , it may be necessary
to remove the top rack. BE EXTREMELY CAREFUL
WHEN PLACING ON DISHWASHER RACK TO NOT
DAMAGE IONIZER WIRES OR BEND COLLECTOR
PLATES.
2. Use any available household dishwasher detergent
recommended for use in your appliance and follow
manufacturer's instructions.
3. Not all dishwashers may be capable of holding the
electronic cell. Be sure to compare the internal size of
the dishwasher to the dimensions of the electronic cell:
16" high x 12
dishwasher must be able to move freely.
4. Take care to avoid damaging the cell when removing it
from the dishwasher. GENTLY LIFT THE CELL
STRAIGHT UP TO PREVENT DAMAGE TO IONIZER
WIRES AND COLLECTOR PLATES.
5. The cell may be hot when removed from the dishwasher .
Allow to cool or wear protective glov es. Make sure that
all water is drained off when removing the cell from the
dishwasher.
1/2" wide x 4 1/2" deep. All par ts of the
6. If dirt stains or detergent residue remain after washing, it
may be necessary to rewash the cell or switch detergent.
ALTERNATE CELL CLEANING METHOD
If an automatic dishwasher is not a vailable or not of sufficient
size to accommodate the cell, a large container capable of
holding the electronic cell can be used.
1. Mix an alkaline detergent with hot water in a ratio of 4
oz. of detergent to 1 gal. of water. Water temperature
should be between 150°F and 170°F. Be careful to av oid
prolonged skin contact with solution and DO NOT splash
solution in the ey es.
2. Soak the cell in the solution for about 15 minutes. The
solution should be agitated in some way every 2 to 3
minutes by sloshing or stirring the solution.
3. Remove the cell from the cleaning solution and place in
a clean container of hot water 150°F to 170°F f or rinsing
and let set for 10 minutes .
4. Remove the cell from the rinse water and allo w to drain
and dry before using.
5. If there is any detergent residue remaining, rinse again,
since it may aff ect the efficiency of the air cleaner.
NOTE: The ionizer wires may become so dir ty that an
occasional cleaning is recommended. With a damp cotton
ball, wipe the ionizer wires by placing the wire between finger
and thumb.
Discoloration of the cell
Occasionally , after the cleaning process, the cell ma y seem
stained. If the stain is black or very dark, it is probably
detergent residue and should be rinsed off at once. If
yellowing appears, it is probably stain from tobacco or other
smoke.
Page 6
The yellowing does not affect air cleaning efficiency. Use
an ammonia based or butyl based detergent to clean tobacco
tar and other smoke residue from the collector plates.
Replacing the cell in cabinet
After the cell has been washed, check for broken ionizer
wires and bent collector plates. If broken wires are observed,
return unit to Authorized Warranty Station for wire
replacement. If bent collector plates are observed, carefully
straighten with a screwdriver or other flat object. BE
CERTAIN THAT NO TWO COLLECTOR PLATES ARE
TOUCHING AS THIS WILL CAUSE ARCING AND
PREVENT THE AIR CLEANER FROM OPERATING
PROPERLY.
Remember that the electronic air cleaner has a cell key which
prevents the cell from being positioned incorrectly. If the
cell seems stuck when being inserted or the access cover
will not fit securely, check to be sure that the cell is being
positioned properly . If e xcessive force is used, the cell or air
cleaner unit could be damaged. Airflow arro ws point toward
fan motor.
If the cell is placed into the air cleaner while still damp, the
indicator light may not come on until the cell is dry, which
would normally take about two hours. If the cell is energized
and annoying snapping sounds occur, the cell should be
removed from the air cleaner and allowed to thoroughly dry.
Activated carbon filter
The activated carbon filter should be replaced when it is no
longer effective in eliminating odors. The life of the carbon
filter will depend on the concentration of odors and fumes in
the air passing through the air cleaner. Under normal
circumstances, the carbon filter should last up to six months.
THE CARBON FIL TER MUST BE IN PLACE FOR THE AIR
CLEANER TO OPERATE.
Consumer troubleshooting guide
In the event that you e xperience problems with the operation
of your air cleaner , please...
• Make sure electronic cell is clean, dry and properly
installed.
• Make sure pre-filter and carbon filter are both properly
installed.
PROBLEM 1
FAN OFF
LAMP OFF
Make sure the supply cord is plugged
into a standard household receptacle.
Make sure there is voltage to the
receptacle by testing with another
electric device.
Make sure the carbon filter is in place.
Make sure the top access cover is
properly in place in order to actuate the
interlock switch. The interlock switch
is provided for consumer safety and
should never be bypassed.
FAN ON
LAMP OFF
Check the electronic cell to see if any
of the collector plates are touching.
Gently straighten and evenly space
the plates.
Check the electronic cell to see if any
of the ionizer wires are broken. See
Major Components for their location.
If broken wires are observed, no
further corrective actions should be
taken by the consumer. Return the
unit to an Authorized Warranty
Station for repair. See Page 12.
PROBLEM 2
• Make sure the top cover is properly snapped in place.
• Check fan motor and indicator lamp on all speed settings
starting with low.
If your air cleaner still has any of the following problems,
proceed step by step as shown below until no further action
should be taken.
PROBLEM 3
FAN OFF
LAMP ON
This condition represents a nonserviceable failure of the air cleaner.
Return the unit to an Authorized
Warranty Station for repair. See Page
12.
No further corrective actions should be
taken by the consumer. Return the unit
to an Authorized Warranty Station for
repair. See Page 12.
Page 7
Troubleshooting electronic air cleaner
Electrical Troubleshooting Procedure for Electronic Air Cleaner
START
Make sure electronic cell is clean,
dry and properly
installed
ÐÐ
Ð
ÐÐ
Make sure pre-filter and activated
carbon filter are properly
installed, and carbon filter is
activating filter interlocking
switch lever.
ÐÐ
Ð
ÐÐ
Replace the access
cover and turn the air
cleaner on. Check
Low, then Med, then Hi
on multispeed fan.
Both
ÐÐ
Ð
ÐÐ
Check fan and
neon light.
Both
Off
ÐÐ
Ð
ÐÐ
Push interlock
switch with plastic
handled screwdriver. Short from
cell frame to a hot
collector plate.
Arcing
Yes
ÐÐ
Ð
ÐÐ
Electronic
Air Cleaner is
OK.
Electronic components on power supply
board are not field replaceable. Attempted
service will damage the board.
Off
Light
On
Fan
On
Arcing
No
WARNING
Check Line 120
VAC power.
Correct as
needed.
ÏÏ
Ï
ÏÏ
Jumper fan
switch contacts
ÎÎ
Î
ÎÎ
- For each speed
in turn on
multispeed fans.
Remove cell.
ÎÎ
Î
ÎÎ
Replace access
cover, Check
ÎÎ
Î
ÎÎ
neon light.
ÐÐ
Ð
ÐÐ
Inspect cell for
- Bent Collector Plates
- Broken Ionizer Wires
- Dirt on Insulators
- Damaged or dirty
Contact Tabs
No cell damage noted
ÐÐ
Ð
ÐÐ
With Ohmmeter, check
for short between
- Cell Frame and Ionizer
Section
- Cell frame and
Collector Section
Infinite
Resistance
ÐÐ
Ð
ÐÐ
Cell OK
Fan
On
Light
Off
120 VAC Present
Replace Switch
ÎÎ
Î
ÎÎ
Turn OFF power. Make
Fan
Off
Light
Off
Cell
Damaged
sure shaft on fan motor
ÎÎ
Î
ÎÎ
rotates freely. Check for
open windings. Replace
if necessary.
Remove access
cover. Check for
ÎÎ
Î
ÎÎ
correct input
voltage: 120 VAC.
Models P1 and P2
terminals on
power supply.
Repair or
ÎÎ
Î
ÎÎ
replace cell
Cell
ÎÎ
Î
ÎÎ
Shorted
Check Contact Board for
ÎÎ
Î
ÎÎ
coating on ground contacts
Check wire connections
are secured properly
Replace Power Board
Assembly
TO USE THIS CHART:
1. Follow the steps in order. Don't skip around.
2. Each time you isolate and fix a problem, go back to
START.
3. Repeat ALL the steps until the air cleaner checks out OK
WARNING
Some of these steps expose dangerous high
voltage. Only a qualified service technician
should attempt this procedure.
ÐÐ
Ð
ÐÐ
Replace Cell
ÐÐ
Ð
ÐÐ
ÐÐ
Ð
ÐÐ
Check filter
Interlocking
Switch, Access
ÎÎ
Î
ÎÎ
Cover Interlocking Switch,
System Switch.
Voltage
correct
Voltage
NOT
Correct
Clean
OK
Check 100 VDC
voltage across
ÎÎ
Î
ÎÎ
terminal on lamp.
ÐÐ
Ð
ÐÐ
Check wiring back
through switch, power
cord, and outlet to
circuit breaker or fuse.
Lamp
Off
Fan
On
Voltage above 120 VDC
Replace Light
ÎÎ
Î
ÎÎ
Dirty
Clean contacts with fine
grain sandpaper or emery
ÎÎ
Î
ÎÎ
cloth.
Lamp
On
Fan
Off
Voltage
Below
70 VDC
Replace
System
ÎÎ
Î
ÎÎ
Switch or fan
motor.
Light OK, replace
complete power
ÎÎ
Î
ÎÎ
supply
Page 8
Wiring Schematic
Page 9
C-90A
Major Components
Page 10
C-90A ELECTRONIC AIR CLEANER COMPONENT PARTS LISTING
PART NO. DESCRIPTION QTY.
616-203-00 FILTER, PRE .......................................................................................................... ..1
616-420-00 FILTER, CARBON ....................................................................................................1
616-424-01 CARTON, RSC .........................................................................................................1
616-425-00 PACKING, TOP & BOTTOM .....................................................................................2
920-010-01 OWNERS MANUAL C-90A .......................................................................................1
616-209-00 BUTT ON, SYSTEM SWITCH ...................................................................................4
616-211-01 SIDE, CABINET ........................................................................................................2
616-212-01 LID, CABINET ...........................................................................................................1
906-081-00 SCREW, #4 - 24 X 3/4" .............................................................................................2
616-417-00 FASTENER ...............................................................................................................4
616-210-01 BASE, CABINET.......................................................................................................1
906-080-00 SCREW ...................................................................................................................10
917-018-00 STRAIN, RELIEF ......................................................................................................1
616-206-00 FAN, 5 BLADE ..........................................................................................................1
616-217-00 ORIFICE ...................................................................................................................1
616-410-00 BLADE COVER ASSEMBLY.....................................................................................1
616-411-01 PANEL, CONTROL................................................................................................... 1
906-022-08 SCREW, SELF-TAPPING .........................................................................................2
906-047-02 SCREW, TAPPING 8A X 3/8 H/W SER ZP ...............................................................2
906-051-00 SCREW, T/C 8-32 X 3/8 H/W SER ZP......................................................................5
605-000-96 SUPPLY CORD ........................................................................................................1
610-714-74 MOTOR ....................................................................................................................1
616-201-00 POWER SUPPLY .....................................................................................................1
616-202-01 CONTACT BOARD................................................................................................... 1
616-207-00 SWITCH, SYSTEM ...................................................................................................1
616-215-00 SPRING, CELL GROUND ........................................................................................1
616-219-00 SWITCH, INTERLOCK .............................................................................................1
616-220-00 LIGHT INDICATOR................................................................................................... 1
616-224-00 WIRE ........................................................................................................................1
616-224-01 WIRE ........................................................................................................................1
616-224-02 WIRE ........................................................................................................................1
616-224-03 WIRE ........................................................................................................................1
616-224-04 WIRE ........................................................................................................................1
616-225-00 PLUG ASSEMBLY .................................................................................................... 1
616-402-00 CAP ASSEMBLY ......................................................................................................1
616-478-00 TAB, DUAL GROUNDING ........................................................................................1
616-977-00 TWIST LOK STANDOFF ..........................................................................................3
616-218-00 BRACKET, GRILLE ..................................................................................................4
616-404-00 GRILLE .....................................................................................................................2
616-976-00 RIVET, PLASTIC.......................................................................................................6
616-665-00 SPACER, POWER SUPPLY ..................................................................................... 2
616-213-00 IONIZER/COLLECTOR CELL...................................................................................1
616-556-00 IONIZER WIRE .........................................................................................................9
616-204-00 SWITCH, FILTER INTERLOCK ................................................................................1
616-407-00 BRACKET, MOTOR MOUNT.................................................................................... 1
Page 11
Regional C-90A Authorized Warranty Repair Stations
R & B Appliance Parts
11
1
11
5070 Lindsay Ct.
Chino, California 91710
TEL: 714/591-9405
1-800-421-2189
Alamo Service Co.
22
2
22
1450 North Flores
San Antonio, Texas 78212
TEL: 210/227-7571
1-800-328-2450
B & G Service Co.
33
3
33
3950 North Elston
Chicago, Illinois 60618
TEL: 773/588-2290
Use Factory Certified Parts.
Reeve Air Conditioning, Inc.
44
4
44
2501 South Park Road
Hallandale, Florida 33009
TEL: 954/962-0252
1-800-962-3383
Superior A/C Service, Inc.
55
5
55
524 Sackett Street
Brooklyn, New Yor k 11217
TEL: 718/852-8200
FRIEDRICH AIR CONDITIONING CO.
Post Office Box 1540 · San Antonio, Texas 78295-1540
4200 N. Pan Am Expressway · San Antonio, Texas 78218-5212
(210) 357-4400 · FAX (210) 357-4480
www.friedrich.com
Printed in the U.S.A.
Page 12
C90ASI3 (1-03)
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