Oreck Air Cleaner 447628 User Manual

®
S I M P L Y  
A M A Z I N G  
Service Manual  
Table Top Air Cleaner  
Super Air 5 / Air 6  
Model 447628 & 4478801  
REV I., Please disregard all earlier versions.  
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Table of Contents  
General Description and Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 3  
Periodic Maintenance and Tune-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 4  
Trouble Shooting Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 5  
Parts Removal and Replacement Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 15  
Cross Section and Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 25  
Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 26  
General Description and Operation  
Airborne particles and odors are removed from  
air passing through the unit by the process of  
electrostatic precipitation and the revolutionary  
post filter which combines antimicrobial  
treatment and activated charcoal.  
The air around you is filled with thousands of particles of air  
pollution. Some of the pollutants - dust, pollen and lint are visible to the naked eye, but most of  
the pollutants - smoke and bacteria, to name a few, are microscopic in size.  
Polluted air enters the unit through the front of the air cleaner. The fan pulls in dirty air and the  
pre-filter traps large particles (hair, lint, etc.). The smaller particles (dust, smoke, pollen) in the  
dirty air receive a positive electrical charge as they pass through the ionizing section. The  
positive charged particles then enter the collecting section which uses a series of alternately  
charged aluminum plates to attract and retain the particles. It works like a powerful magnet  
and the particles remain there through natural adhesion until removed by the washing process.  
The air then passes through the post filter that helps control microorganisms and remove  
household odors. Next, the negative ion generator freshens stale air. Finally, clean air passes  
back into the room through the top grille.  
3
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Periodic Maintenance Tune-Up  
1. Remove collecting cell and pre/post filters.  
2. Wipe down inside of unit with damp cloth.  
3. Thoroughly Clean Collecting Cell with Oreck Assail-A-Cell Cleaner.  
4. Check for any broken wires in the collecting cell, and ensure wires are securely seated  
in the plastic spacer at the center of the cell. Check for any bent plates in collecting cell.  
Replace if damaged.  
wires  
plastic spacer  
plates  
5. Thoroughly Clean pre-filter with warm soapy water.  
6. Clean negative ion generator tip with a alcohol and a cotton swab.  
7. Clean the dirt and grime from the motor shaft using a soft cloth.  
8. Squirt a few drops of machine oil (“3 in 1” type oil, not WD-40 type oil) in the slot on the  
shaft to lubricate the bearing.  
9. Check to ensure blower wheel rotates freely.  
10. Check to ensure rubber grommet on motor shaft is not worn or loose. Replace if  
necessary.  
11. Check the bearing in the bearing wall (opposite end of motor) on other end of blower  
wheel for excessive wear or damage. Replace if necessary.  
12. Re-install collecting cell and pre-filter.  
13. Install New Post Filter (Activated Charcoal Filter).  
4
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Troubleshooting Guide  
Warning: The troubleshooting portion of this manual requires that the unit power be “ON” for  
much of the servicing portion of troubleshooting. When working on the unit under power, use all  
of the standard precautions in working with any electro-mechanical device that contains line  
voltage, high voltage, and rotating elements. Failure to follow standard safety procedures can  
cause electrical shock, personal injury or property damage.  
Initially:  
1. Plug the unit into a proper outlet.  
2. Check the unit on all speeds to see if the blower and motor are operating properly. The  
power supply light should not operate on the “fan” selection mode.  
Problem Being Checked:  
1. If the motor and blower do not operate:  
a. Check the top for proper positioning. The top must fit tightly on the unit.  
Remove the top. Depress the  
interlock switch with a plastic  
handle screwdriver to test  
operation. If the motor and  
blower operate, then the  
problem is that the interlock  
switch is not gettting engaged  
when the top is on. Reinstall  
the top and ensure tight fit so  
activator post can engage the  
interlock switch.  
b. With the top removed, depress the interlock switch with a plastic handle screwdriver to  
test operation.  
c. If the motor and blower operate, then the problem is that the interlock switch is not  
engaged when the top is on.  
d. Check the top to see if there is a broken activator post.  
e. Check the top to determine if it is warped. If the top appears to be warped, try  
a new top.  
Activator Post  
Interlock Switch  
Turn the top over and examine it for a broken activator post. Lay the top on a smooth  
surface. Check it for warpage that could keep the interlock switch from being engaged.  
f. Check the interlock switch (item 3 of the parts diagram).  
5
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Troubleshooting Guide  
How to Remove the Power Supply Cover  
1. Insert flathead screwdriver into slot on the interior edge of the power supply cover, and  
push plastic clip away from contact wall so that the cover can be lifted up.  
Gently pry the plastic clip  
away from contact wall to  
release the cover.  
2. The switch wires will limit the movement of the power supply cover.  
3. Is the switch actuator broken?  
If the actuator is broken,  
replace the switch.  
4. Is the switch properly seated in the bracket, or is the bracket broken or distorted?  
The switch is held in position by a bracket that allows the switch to be snapped  
between two locator ribs on the bracket.  
If the switch is out of  
position, straighten and  
secure it. If the bracket is  
broken or distorted, replace  
the motor bracket.  
5. Are the wires connected to the switch?  
Check both wires on the  
interlock switch to ensure  
that they are connected and  
tight.  
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Troubleshooting Guide  
6. Check the voltage to and from the switch when activated. You should be able to  
measure line voltage entering and leaving the switch when activated.  
TO SWITCH, If voltage is  
present on line side of the  
LINE SIDE  
switch but not present on  
load side, the switch is bad.  
LOAD SIDE  
FROM SWITCH, If there is no  
voltage on line side of the  
switch, check the wall outlet.  
If there is voltage at the  
outlet, then the line cord is  
bad.  
7. Check the switch plate cover. The plate must sit squarely on the bearing wall  
and the cabinet base.  
If the switch plate cover is  
not secure, it will prevent the  
top from engaging the  
interlock switch. Insure that  
the cover is in position.  
2. If the motor operates but the green “cleaning air” light does not operate:  
a. Remove the cell and check to see if the “cleaning air” light comes on.  
CLEANING AIR LIGHT  
b. If the light operates with the cell removed, check the cell for broken wires that  
could cause a dead short. Check to see if the cell plates are bent or touching.  
Check to see if there is a foreign object in the cell. Check for carbon paths or  
tracks on the cell ends.  
If the cell has loose or broken wires or bent plates,  
replace the cell. If there are no loose or broken  
wires present, hold the cell up to the light and look  
for metal shavings or anything that may be causing  
a short. If nothing is apparent, clear and retest the  
cell. If the problem persists, replace the cell. If carbon  
tracking is present on cell ends, replace the cell.  
7
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Troubleshooting Guide  
c. If the light does not operate with the cell removed, check the wires to the  
light and confirm that they are properly connected. Check the voltage from  
the light terminals on the power supply board. Set meter to appropriate scale.  
You should have about 16 volts DC.  
If the wire has voltage, the  
light is bad and needs to be  
replaced. If the wire does  
not have voltage, go to  
next step.  
d. Option 1: Check the output of the power supply by using the recommended H.V.  
probe and a multimeter. The unit must be "ON" with the operating switch in the  
"Max Clean" position and the interlock switch must be depressed. The voltage  
should measure from -5.5 KVDC to -7.0 KVDC. An alternate method to check  
voltage is by using a plastic handled screwdriver to short the high voltage  
contacts and observe a spark.  
If the voltage is not present,  
check the transformer output.  
If the voltage is present and not  
within range, replace the power  
supply board and check the  
transformer output. If the  
voltage is present and within  
range, the power supply is  
operating properly.  
Option 2: Using a plastic handle screwdriver, short the high voltage contacts  
and observe a spark.  
Short the HV contacts to  
observe a spark.  
8
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Troubleshooting Guide  
e. Check the input voltage to the transformer using a standard lead and a multimeter.  
Check the voltage from the black lead on the terminal L speed control switch and white  
lead on power supply board labeled line neutral. Activate the interlock switch. The  
meter should indicate line voltage. Check the voltage on the two yellow wires on the  
power supply board from the transformer. The interlock switch must be activated. The  
meter must indicate 24 vac.  
BLACK LEAD  
If there is no power to the  
transformer, recheck  
YELLOW WIRES  
section 1, the interlock  
switch.  
If there is power to the  
transformer, but no output  
voltage, replace the  
transformer and power  
supply board assembly.  
WHITE LEAD  
3. If the green “cleaning air” light operates and the blower wheel does not turn.  
a. Remove the top and check to see if the stripper is in place.  
The stripper is held in  
position by slots in the  
contact wall and bearing  
plate and alignment tabs on  
the stripper plate. If the  
stripper is not in position,  
reposition the plate by  
placing tabs into the slots.  
b. Use your hand to try to spin the blower wheel.  
If the wheel does not spin  
freely, check for anything  
that may be blocking the  
movement of the wheel and  
remove the blockage. If no  
blockage is apparent, see  
3c and 3d  
c. Turn the unit over and check for signs of distortion in the cabinet bottom beneath the  
motor that might prevent the blower from spinning.  
If the cabinet bottom is  
distorted, replace the unit.  
9
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Troubleshooting Guide  
d. If there are no signs of distortion, remove the blower wheel (see: Blower Wheel  
Removal) and activate the unit. Notice if the motor shaft rotates without the blower  
wheel. If the motor shaft operates, the problem is related to the blower wheel.  
If the motor shaft rotates  
then replace the blower  
wheel drive grommet and  
bearing wall. If the motor  
shaft does not rotate, replace  
the motor.  
4. If the motor shaft does not turn on all speeds, or seems sluggish, it may be due to a  
build-up of dirt and grime on the motor shaft. To remedy this.  
a. Clean the dirt and grime from the motor shaft using a soft cloth.  
Motor Shaft  
b. Squirt a few drops of lubricating oil (“3 in 1” type oil, not WD-40 type oil) in the slot on  
the shaft to lubricate the bearing.  
5. If the blower wheel vibrates:  
a. Check for bent or warped blades.  
Replace the blower wheel if  
blades appear warped or  
bent.  
b. Check for loose or worn drive grommet.  
Replace the drive grommet.  
10  
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Troubleshooting Guide  
c. Check to see if the blower wheel is adequately supported by the outside bearing  
plate assembly.  
The outboard end of the blower wheel should be  
firmly supported, allowing no movement other than  
rotation. If that end of the wheel can be moved front  
to back and up and down, remove the bearing plate  
assembly and check the bearing for damage or  
excessive wear. Replace parts as needed. Use care  
in handling the blower wheel. Do not distort the  
wheel blades. On reassembly, insert the outboard  
wheel shaft into the bearing plate then position the  
plate into the cabinet. The blower wheel should be  
positioned so that the clearance between the ends of  
the wheel and the adjacent walls are approximately  
equal on both sides. If the wheel is too close it may  
drag on the wall. Too much clearance at the outboard  
end may cause the wheel shaft to slip out of the  
outboard bearing.  
d. Check to see if the motor mounting bracket snap tabs are in place or are loose.  
Look into the four base slots to see the tabs.  
If the tabs are not in position,  
use a screwdriver inserted  
into slots to push the tabs  
out of the slot. You may  
need to twist the screwdriver  
slightly to disengage the  
snaps. Inspect the mounting  
bracket; replace it if  
damaged. Check for broken  
mounting tabs, distorted  
bracket (because of  
excessive heat). A distorted  
motor bracket normally  
indicates motor overheating.  
The motor should be  
replaced.  
e. Check to see if the motor is loose in the support bracket by holding the bracket  
and trying to move the motor. If the motor moves, remove the mounting bracket to  
check the isolator pads  
Insure that the isolator pads  
are in position. Replace if the  
motor moved while being  
held in place with mounting  
bracket.  
11  
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Troubleshooting Guide  
6
If the cell is arcing, check the following:  
a. If there are loose or broken ionizer wires.  
Replace the cell.  
b. If the cell is dirty. Remove the cell and wash with warm soapy water. Dry completely  
before re-installing.  
c. If there are bent cell plates.  
Replace the cell by following  
instructions on inside of  
cabinet top.  
d. If the cell is improperly installed in the unit.  
Reinstall the cell.  
e. If the cell contacts are broken or loose.  
CELL CONTACTS  
Replace the cell.  
12  
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Troubleshooting Guide  
f. If the H.V. contacts are not properly aligned or the contact wall is not properly  
aligned.  
The H.V. contacts must make  
good contact. Replace the  
contact wall or straighten the  
contacts, if possible.  
7. Checking for ionizing needle operation. Using HV voltage probe check needle for  
high voltage -5.5 KVDC to -7.0 KVDC.  
a. If voltage is present, the ionizer is OK.  
Clean needle with alcohol  
and a cotton swab.  
b. If voltage is not present, check HV power supply.  
See above diagram.  
c. If voltage is present at HV power supply but not the needle.  
Replace the negative ionizer  
assembly including wire,  
with needle attached, and  
terminal.  
IMPORTANT: Replace using  
wire routing on contact  
board.  
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Notes  
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Super Air 5 Model 447628  
Parts Removal and Replacement  
General Parts Replacement  
Motor Removal and Replacement page 16  
Power Supply Removal and Replacement page 19  
Transformer Removal and Replacement page 21  
Bearing Wall Assembly and  
Blower Wheel Removal and Replacement page 22  
Led Assembly Removal and Replacement page 23  
Cell Assembly Removal and Replacement page 23  
Ionizer Needle Removal and Replacement page 23  
Fan Blade Removal and Replacement page 24  
Warning - All parts removal and replacement should  
be performed with power disconnected from the unit.  
15  
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General Parts Replacement  
Motor Removal and Replacement  
1. Remove the cabinet top by pressing  
down the thumb latch and sliding the  
top forward.  
2. Remove the cell assembly (see inside  
of top for instructions).  
3. Remove the stripper by pulling it  
to the right and applying pressure to  
the bearing wall. Lift the left hand side  
of the stripper out of the bearing wall  
locator seat and then remove the  
stripper.  
4. Flip the unit onto its side with the  
bearing wall up and release the two  
locking tabs for the bearing wall  
assembly by using a regular  
screwdriver from the bottom. Place  
screwdriver blade into the slot on top  
of the snap finger locking tab and twist  
the blade slightly while pulling on the  
bearing plate. Repeat for the second  
tab. The bearing wall may now be  
removed by moving the blower wheel  
and bearing wall away from the cabinet  
and lifting the bearing wall off of the  
blower wheel.  
16  
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General Parts Replacement  
ROTATING ELEMENT WARNING - Unit has a rotating blower wheel and cooling  
fan to circulate air and keep the unit cool. When servicing the unit and repairing  
the unit always insure that you keep objects and internal electrical wiring away  
from the rotating elements. Failure to allow for proper clearance for rotating  
members can cause electric shock, personal injury or property damage.  
5. Remove the blower wheel by gently  
grasping the outside of the wheel at the  
center support rib and the rib closest  
to the motor. Tilt the wheel up and pull  
it away from the motor shaft. The blower  
wheel rubber grommet is glued to the  
shaft of the motor and will remain  
attached to the motor.  
6. Remove the power supply cover by  
placing a screwdriver blade in the cover  
slot with the blade inserted on the blower  
wheel side of the slot. Catch the tan snap  
tab and twist the screwdriver slightly while  
lifting up on the cover and remove the  
power supply cover assembly. Lay the  
assembly aside out of the way.  
7. Remove the interlock switch from the  
mounting bracket by releasing the snap  
lever and lifting the switch out of the  
bracket. It is not necessary to disconnect  
the switch wires.  
SLOTS  
8. Turn the unit over. Use a screwdriver to  
release the motor mounting bracket  
locking tabs by inserting the screwdriver  
blade between the snap tab and the  
housing. Twist the snap tab toward the  
center of the four motor mounting slots.  
You will need to pull the mounting bracket  
away from the cabinet while releasing the  
tabs. After releasing all four tabs, remove  
the bracket.  
17  
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General Parts Replacement  
HIGH VOLTAGE WARNING - This equipment is supplied with line voltage from a  
standard wall socket. Use standard precautions in working on it with line voltage  
applied. Failure to practice normal electrical safety precautions can cause  
electrical shock, personal injury or property damage.  
9. Unplug the red terminal (3), brown  
terminal (2) and black terminal (1) wires  
from the selector switch by pushing a  
paper clip (straightened) under the wire  
into the switch while pulling on the wire  
lightly.  
10. Remove the white motor wire from the  
power supply board line neutral  
connection.  
11. Remove the motor and replace it with the  
new motor.  
MOTOR WIRE  
12. Reverse the above steps to replace the  
motor.  
13. It is important that the motor isolators are  
installed correctly and are seated as  
designed. Contacts on side of insulator  
should fit over motor bearing bracket.  
Motor and isolators must fit securely.  
ISOLATOR PAD  
18  
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General Parts Replacement  
Power Supply Removal and Replacement  
1. Follow steps 1, 3, and 6 of Motor Removal and Replacement.  
EXTREME HIGH VOLTAGE WARNING - This equipment is supplied with line  
voltage from a standard electrical wall socket. That voltage is transformed to a  
24V signal that is then amplified to over 6000VDC. In working with the equipment  
you must always know the voltage level for the equipment and wiring. Attempting  
to measure or work with the 6000 VDC power without using the proper high  
voltage probe can cause electrical shock, personal injury or property damage.  
Probing a high voltage without the proper meter will potentially damage the volt meter.  
EXTREME HIGH VOLTAGE WIRING WARNING - The unit has been designed  
such that extremely high cell collector voltage wiring is isolated from all other  
wiring. Special wiring routing holders have been designed into the unit. This  
extremely high voltage wiring must be routed correctly. Failure to route and isolate  
the wire can create a fire hazard, personal injury or property damage.  
INSULATOR BOARD WARNING - The unit has been designed with special  
insulator and isolator spacer boards that must be in position. These boards are  
made of a special insulator material and must be in position to properly isolate  
wiring and connectors from uninsulated parts. Failure to place the boards in the  
proper location can create a fire hazard, cause personal injury, or property damage.  
2.  
Before removing the HV power supply  
board make note of the position of all  
the wiring. You will note that all wiring is  
bound and well away from the motor  
fan. The HV power single red line  
coming from the left hand side of the  
board is routed in special built-in plastic  
routing holders and isolated from all  
other wires. Note that the routing and  
isolation is critical and must not be  
altered. In addition, the two insulator  
sheets are preset and must be in  
position. After carefully noting the  
above, remove the HV power supply  
board by first removing the HV red lead  
from the bottom holder. You can now lift  
the board up and rotate it into a position  
to allow the connectors to be removed.  
Reconnect the replacement board by  
carefully removing one wire at a time  
from the connected board and placing it  
on the same location on the  
replacement board.  
19  
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General Parts Replacement  
All leads must be connected to the new board properly. The HV power line must be  
isolated and properly routed. Two insulator sheets must be in position and all wiring must  
be captured to prevent contact with rotating elements. A wiring diagram is included in the  
service manual for your use.  
3. The new board may now be reinstalled in  
the housing by sliding it back into position.  
The housing has two board reference ribs  
molded in the bottom that hold the board  
in position. Position the board between  
the side wall and the reference ribs. You  
may need to hold the board in place  
before and during installation of the power  
supply cover.  
ROTATING ELEMENT WARNING - Unit has a rotating blower wheel and cooling  
fan to circulate air and keep the unit cool. When servicing the unit and repairing  
the unit always insure that you keep objects and internal electrical wiring away  
from the rotating elements. Failure to allow for proper clearance for rotating  
members can cause electric shock, personal injury or property damage.  
4. The power supply cover may now be  
reinstalled. Check wiring to insure it is  
routed properly and cannot contact motor  
fan and is properly isolated. Install the  
power supply cover by placing the cover  
locator tabs into the cabinet at an angle  
while rotating it into place. The locking  
snap should engage when in the final  
position.  
EXTREME HIGH VOLTAGE WARNING - This equipment is supplied with high  
voltage from a standard electrical wall socket. That voltage is transformed to a 24V  
signal that is then amplified to over 6000 VDC. In working with the equipment you  
must always know the voltage level for the equipment and wiring. Attempting to  
measure or work with the 6000 VDC power without using the proper high voltage  
probe can cause electrical shock, personal injury or property damage. Measuring  
high voltage without the proper meter and probe will potentially damage the volt meter.  
20  
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General Parts Replacement  
5. To test the power supply, touch the metal  
shaft of a screwdriver, with an insulated or  
plastic handle, to one of the contacts while  
keeping the screwdriver tip about 1/8"  
away from the other contact. You should  
see an arc and hear a snapping sound.  
6. Reverse step 1.  
Transformer Removal and Replacement  
1. Follow steps 1, 2, 3, and 6 of Motor  
Removal and Replacement.  
Remove two #6 screws and nuts that  
secure the transformer to the cabinet  
bottom. Save for installment of the new  
transformer.  
HIGH VOLTAGE WARNING - This equipment is supplied with line voltage from a  
standard wall socket. Use standard precautions in working on it with line voltage  
applied. Failure to practice normal electrical safety precautions can cause  
electrical shock, personal injury or property damage.  
ROTATING ELEMENT WARNING - Unit has a rotating blower wheel and cooling  
fan to circulate air and keep the unit cool. When servicing the unit and repairing  
the unit always insure that you keep objects and internal electrical wiring away  
from the rotating elements. Failure to allow for proper clearance for rotating  
members can cause electric shock, personal injury or property damage.  
2. Remove the power supply and disconnect  
the yellow low voltage leads and white line  
voltage lead. Remove the black input line  
to selector switch position 4 using a  
straightened paper clip inserted into the  
selector switch connection.  
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General Parts Replacement  
3. Remove the two #8/32 lockwasher nuts  
and remove the transformer and replace it  
with the new unit.  
4. Reverse the above steps 1,2, and 3 to  
replace the transformer.  
Bearing Wall Assembly and Blower Wheel Removal and Replacement  
1. Follow steps 1, 2, 3, 4 and 5 of Motor Removal and Replacement.  
2. The rubber grommet will need to be  
removed from the motor shaft. This can  
be done by cutting it off using a sharp  
razor knife and slitting the grommet along  
the motor shaft axis. You can then peel  
the grommet off of the shaft. The motor  
shaft must be clean before installing the  
new blower wheel and grommet. Using a  
razor knife, carefully remove any sealant  
on the shaft and wipe it with a clean cloth.  
3. You are now ready to reinstall the new  
lower wheel and grommet assembly.  
Place one drop of adhesive (loctite 401 or  
equivalent "super glue" type adhesive) on  
the motor shaft in the small groove about  
1/2" from the blower wheel attachment  
end. Place the new bearing wall  
assembly on the blower wheel shaft.  
Slide the grommet on to the motor shaft  
and rotate the bearing wall and blower into  
position. Snap the wall into the cabinet.  
Move the blower wheel so that the tips of  
the blades are about 1/4" from the bearing  
wall.  
4. Reverse the above steps 1, 2 and 3 and to replace the bearing wall and blower wheel.  
22  
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General Parts Replacement  
Led Assembly Removal and Replacement  
1. Follow steps 1, 2, and 6 of Motor Removal and Replacement.  
2. Disconnect the two red led leads from the  
power supply board and remove the led  
assembly by removing the led retaining  
ring from the back of the front panel and  
removing the led and the leads.  
LED LEADS  
3. Replace with a new led assembly.  
4. Reverse the above steps 1 and 2 to  
replace the led assembly.  
Cell Assembly Removal and Replacement  
1. Follow steps 1and 2 of Motor Removal and Replacement.  
2. Replace with a new cell.  
3. Reverse the above step 1 to replace the  
cell.  
Ionizer Needle Removal and Replacement  
1. Follow steps 1, 3, and 6 of Motor Removal and Replacement.  
EXTREME HIGH VOLTAGE WARNING - This equipment is supplied with line  
voltage from a standard electrical wall socket. That voltage is transformed to a  
24V signal that is then amplified to over 6000 VDC. In working with the equipment  
you must always know the voltage level for the equipment and wiring. Attempting  
to measure or work with the 6000 VDC power without using the proper high  
voltage probe can cause electrical shock, personal injury or property damage.  
Probing a high voltage without the proper meter will potentially damage the volt  
meter.  
23  
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General Parts Replacement  
EXTREME HIGH VOLTAGE WIRING WARNING - The unit has been designed  
such that extremely high cell collector voltage wiring is isolated from all other  
wiring. Special wiring routing holders have been designed into the unit. This  
extremely high voltage wiring must be routed correctly. Failure to route and isolate  
the wire can create a fire hazard, personal injury or property damage.  
2. Carefully remove the ionizer needle  
assembly that is the piece of red insulated  
wire with fast on connection on one end  
and the needle on the other end. Replace  
with new needle assembly.  
IONIZER NEEDLE  
ASSEMBLY  
3. Reverse step 1 above to replace  
assembly.  
Fan Blade Removal and Replacement  
1. Follow steps 1, 2, 3, and 6 of Motor Removal and Replacement.  
ROTATING ELEMENT WARNING - Unit has a rotating blower wheel and cooling  
fan to circulate air and keep the unit cool. When servicing the unit and repairing  
the unit always insure that you keep objects and internal electrical wiring away  
from the rotating elements. Failure to allow for proper clearance for rotating  
members can cause electric shock, personal injury or property damage.  
2. Remove fan with flathead screwdriver by  
lightly prying the fan off of the motor shaft.  
3. Replace the fan with the new fan and  
insure that the new fan is installed on the  
motor shaft with the metal locking collar  
closest to the motor body. Press the fan  
onto the shaft and allow about 1/4"  
distance between the motor end bracket  
and the fan hub. Spin the fan to ensure it  
is clear of all objects.  
4. Reverse above step 1 above to replace  
the fan.  
24  
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Parts List  
QTY  
1
ITEM #  
PART NO.  
242235-001  
242331-007  
242404-001  
247135-001  
AT2PK  
DESCRIPTION  
1
2
3
4
5
6
7
8
9
SWITCH KNOB, BLACK  
TRANSFORMER  
1
1
INTERLOCK SWITCH  
FAN BLADE  
1
2
CHARCOAL COMBINATION FILTER  
CONTROL LABEL  
1
247667-001  
342472-002  
342480-003  
254682-001  
1
CONTACT WALL ASSEMBLY  
PLASTIC MESH PREFILTER  
BLOWER WHEEL KIT  
1
1
1
1
1
10  
11  
12  
254681-001  
451686-003  
442415-101  
MOTOR KIT (BALL BEARING MOTOR DOES NOT REQUIRE COOLING FAN)  
CABINET TOP, GRAY  
COLLECTOR CELL  
1
1
1
1
1
1
1
2
1
1
1
1
2
3
1
1
13  
14  
15  
16  
17  
142475-001  
342228-001  
342227-001  
136483-001  
342402-251  
342402-254  
442223-201  
242253-001  
142581-001  
145820-002  
40184-01  
ION NEEDLE ASSEMBLY  
STRIPPER  
MOTOR MOUNTING BRACKET  
DRIVE GROMMET  
HV POWER SUPPLY BOARD  
HV POWER SUPPLY BOARD “HUMP BACK”  
CABINET BOTTOM  
18  
19  
20  
21  
MOTOR ISOLATOR PAD  
SWITCH ASSEMBLY  
SWITCH ROCKER  
CARTON  
442414-001  
20CFT  
CARTON INSERT  
NLA  
CHARCOAL FILTERS (NO LONGER AVAILABLE)  
CHARCOAL FILTERS  
30CFT  
33358  
CELL CLEANER  
242809-015  
OWNER’S MANUAL  
12  
11  
5
8
14  
3
21  
1
13  
15  
19  
6
9
10  
7
16  
20  
4
2
19  
18  
17  
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Wiring Diagram  
INTERLOCK  
SWITCH  
POWER SWITCH  
LINE  
CORD  
BLACK (RIBBED)  
BLUE (242477-035)  
BLUE (242477-035)  
BLK (HI)  
BRN (MED)  
RED (LO)  
LINE NEW  
BLOWER  
WHT  
RED  
RED  
LED  
120V, 60HZ  
ION./COLL. CELL  
BLK  
120V  
WHT  
BLACK (RIBBED)  
YEL  
YEL  
24V  
POS 1 OFF  
GRN  
GRN  
GRN  
POS 2 L-1  
RED  
POWER  
SWITCH  
OUTPUT  
POS 3 L-1,4  
POS 4 L-2,4  
POS 5 L-3,4  
GRN (242477-027)  
RED (142475-001)  
©2004 Oreck Holdings, LLC. All rights reserved. All trademarks are owned and used under the authority of Oreck Holdings, LLC.  
75422-01  
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Notes  
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27  
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©2004 Oreck Holdings, LLC. All rights reserved. All trademarks are owned and used under the authority of Oreck Holdings, LLC.  
75422-01 REV I 08/04  
R-7693, R-7695  
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