Amana DUCT MOUNT Instruction manual

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Amana DUCT MOUNT Instruction manual | Manualzz

Heating & Air Conditioning

®

C om fort. Q uality. Trust.

DUCT MOUNT

Electronic Air Cleaner Manual

•Installation

•Operation

•Service

•Maintenance

ATTENTION INSTALLING PERSONNEL

As a professional installer you have an obligation to know the product better than the customer. This includes all safety precautions and related items.

Prior to actual installation, thoroughly familiarize yourself with this Instruction Manual. Pay special attention to all safety warnings. Often during installation or repair it is possible to place yourself in a position which is more hazardous than when the unit is in operation.

Remember, it is your responsibility to install the product safely and to know it well enough to be able to instruct a customer in its safe use.

Safety is a matter of common sense...a matter of thinking before acting. Most dealers have a list of specific good safety practices...follow them.

The precautions listed in this Installation Manual are intended as supplemental to existing practices.

However, if there is a direct conflict between existing practices and the content of this manual, the precautions listed here take precedence.

November 2002

Amana

1810 Wilson Parkway • Fayetteville, TN 37334

10026805

Important Information

Great pride and workmanship go into every Amana product to provide our Customers with the highest possible quality.

We realize, however, that during its lifetime the product may require service. The information contained in this manual is intended for use by a qualified Amana Service Technician who is familiar with the safety procedures required in the repair and who is equipped with the proper tools and testing instruments.

WARNING

Repairs covered in this manual that are made by unqualified persons can result in hazards due to improper assembly or adjustments subjecting inexperienced persons making such repairs to the risk of injury or electrical shock which can be serious or even fatal.

IMPORTANT NOTE TO CUSTOMER

CAUTION

If you perform service on your own Amana product, you must assume responsibility for any personal injury or property damage that may result. Amana will not be responsible for any injury or property damage arising from improper service and/or service procedures.

In order to locate an authorized Amana service agency, please consult your telephone book or the dealer from whom you purchased this product. If you require further assistance, please contact:

CONSUMER INFORMATION LINE

AMANA TOLL FREE

1-877-254-4729 (U.S. only) email us at: [email protected]

fax us at: (931) 438- 4362

(Not a technical assistance line for dealers.)

Outside the U.S., call 1-931-433-6101.

(Not a technical assistance line for dealers.)

Your telephone company will bill you for the call.

SHIPPING AND HANDLING

Units are securely packed in shipping containers approved by the International Safe Transit Association. Check the carton upon arrival for external damage. If damage is found, file a request in writing for inspection by the carrier agent immediately. The carrier is responsible for making prompt inspection of damage and for a thorough investigation of each claim. The distributor or manufacturer will not accept claims from dealers for transportation damage. If no damage is found, carefully remove all shipping material and properly dispose of it.

Keep the unit as upright as possible. Laying the unit on its side or top could cause equipment damage.

TO THE INSTALLER

Before installing this unit please read this manual and the Specification Sheet to familiarize yourself on the specific items which must be adhered to such as maximum external static pressure to unit, air temperature rise, minimum or maximum CFM and motor speed connections.

TO THE OWNER

It is important to complete the owner registration card and mail it immediately. This will assist us in contacting you if any service or warranty information should change in the future. When completing the registration card, be sure to include the

Model, Manufacturing and Serial Numbers, plus the installation date.

The warranty certificate is also supplied with the unit. Read the warranty carefully and note what is covered. Keep the warranty certificate in a safe place so you can find it if necessary.

If additional operating instructions are required, call the dealer where the purchase was made. Keep this literature in a safe place for future reference.

2

General Information

SPECIFICATIONS

Maximum Rated Capacity: 2000 CFM (3400 m 3 /hr.)

Maximum Pressure Drop: 0.14 in. w.g. @ 2000 CFM

Maximum Power Consumption: 48 watts

Weights

Each Cell: 12 lbs. (5.45 kg)

Total Unit: 36 lbs. (16.4 kg)

Electrical

Input:

Output:

BASIC COMPONENTS

120V, 60Hz, 1Ph

3.2 mADC @6200 kVDC

CABINET – mounts to existing ductwork; houses the ionizing collecting cells and pre-filters.

COLLECTING CELLS – collect the dust, dirt and other particulate in the air. They contain the ionizing and collecting sections as described above. The cells must be installed with ionizing wires on the air intake side. A spring contact is located on the top of each cell and must be in position to make contact with the contact board assemblies on the bottom of the power tray assembly (Fig. 1).

PRE-FILTERS – trap large particulate before it enters the collector cells.

POWER TRAY ASSEMBLY – contains the indicating lights, the solid-state power supply, electronic airflow sensor, contact boards and electrical controls including ON/

OFF switch and safety interlock switch.

AIR FLOW SENSOR (AFS) – senses the movement of air with the duct. It reduces power usage and prevents build up of ozone within the duct. The AFS utilizes a thermistor that is heated to approximately 130°F and stabilizes at this temperature. When the system blower is energized and air flows through the duct system, a vacuum affect pulls air over the thermistor, thus cooling it. This cooling effect signals the electronic air cleaner to turn on and provide air cleaning.

POWER TRAY

ASSEMBLY

CABINET

POWER TRAY

ASSEMBLY COVER

PRE-FILTER(S)

COLLECTING

CELL(S)

Figure 1

ON-OFF

SWITCH

INDICATING

LIGHTS

CELL

CONTACT

FRONT PANEL

ASSEMBLY

3

DUSTING AND “WHITE DUST”

Your new Electronic Air Cleaner (EAC6) will efficiently clean and filter your household air. Unfortunately, it will not eliminate the need for regular dusting of your furniture and belongings. Due to the design of all duct-mounted air cleaners, they can only clean the air that reaches the air cleaner. Therefore, if the particulates are not being carried to the air cleaner in the air stream, the air cleaner cannot remove them from your home.

Occasionally a “white dust” may be noticed in bedrooms or newly furnished rooms. This is mainly composed of lint that because it is heavier than other particulates, settles before it reaches your unit. This “white dust” is not mixed with airborne dirt particles; therefore, it is clean and has no staining or soiling properties. However, running the furnace blower continuously, day and night, will help reduce this from occurring.

OZONE

Under normal operating conditions all Electronic Air Cleaners produce minute quantities of ozone as an incidental byproduct. In fact, all electronic products, such as televisions, cordless phones and refrigerators, produce some amount of ozone. The average homeowner can detect the smell of ozone concentrations as low as 25 to 100 ppb

(parts per billion). The design of this unit has been tested and ozone production is approximately half of the published permissible limits established by the Environmental

Protection Agency. These limits recommend that the concentration of indoor ozone not exceed 50 ppb. Ozone is not harmful in these concentrations. In fact, the ozone level in major cities can sometimes reach as high as 100 ppb on a summer day. The addition of optional charcoal after-filters can help reduce this.

Normally, a new unit will produce more ozone than one that has been in operation for several weeks. This is due to sharp corners or manufacturing burrs on the ionizingcollecting cell(s) and is normal. As the Electronic Air

Cleaner arcs and zaps, the voltage is vaporizing these areas and tends to round them off. This is a part of the

General Information

breaking in period of ownership and the issue is selfcorrecting. Also, high altitude locations can be more susceptible to noticing the presence of ozone.

An ionizing-collecting cell that has been damaged or bent

(the designed spacing between electrically charged and ground components has been decreased) may also produce an abnormal amount of ozone.

OPERATION

This electronic air cleaner (technically known as a twostage electrostatic precipitator) is designed to remove airborne particulates – dust, dirt, smoke, pollen, virus, spores, bacteria, mold – from indoor air.

It is used in forced air heating, cooling and ventilating systems. As dirty air enters the air cleaner, the air passes through a metal mesh pre-filter. The pre-filter prevents lint, pet hair and other large particulates from entering the air cleaner by impingement. It is important that these filters be in place to prevent excessive dirt loading of the air cleaner collector cells. These filters extend the time between maintenance of the air cleaner collector cells. This allows the collector cells to provide clean air for a longer period between washings.

The pre-filtered air then passes through a two-stage electronic air cleaner. In the first stage all airborne particulate, even the submicron sized, are electrically charged (positive) as they pass through the ionizer. The ionizer field is set up by a corona discharge emanating from the fine tightly strung wires suspended between two adjacent flat plates. In the second stage, the charged particulate pass into an intense electrical field established between alternately charged and grounded parallel plates. Here the positively charged particulate is attracted to the ground plates and is precipitated out of the air stream.

Because of a built-in electronic air flow sensor; the air cleaner operates automatically with the system blower.

The air cleaner should be installed in the system so that all the system air is circulated through the air cleaner. The

EAC6 will only remove the airborne contaminants delivered to it. Maximum performance is obtained when the system blower is set for continuous operation. For high altitude applications, see Troubleshooting (Qualified

Servicer Only) section.

4

General Information

PRE-INSTALLATION CONSIDERATIONS AND REQUIREMENTS

CAUTION

Read rules and instructions carefully for safe operation. Failure to follow them could damage your unit or cause a hazardous condition. Check your unit ratings given on the cleaner to ensure it is suitable for your application.

P

LACEMENT

The best location for the air cleaner is in the return air duct next to the blower compartment. In this location, the blower motor and cooling coils will be kept the cleanest.

DO NOT INSTALL THE AIR CLEANER IN THE DIS-

CHARGE AIR DUCT. Before installing the air cleaner, consider the application (see Figures 3 to 8). If a transition is required, refer to section entitled “Transitions”. The unit must be readily accessible for periodic inspection and cleaning of the pre-filters and electronic cells to maintain maximum efficiency and trouble-free operation.

A

IR

C

ONDITIONING

The air cleaner should be installed upstream of the cooling coil. This will keep the coil clean and reduce air conditioning coil maintenance. Improved cooling efficiency is the result that directly affects energy costs. A clean coil will reduce utility costs. If the air cleaner is downstream of the cooling coil, condensation will form on the cooled collector plates when the air conditioner cycles. This will allow water droplets to form on the collector plates and cause nuisance arcing. Arcing will reduce air cleaner efficiency and reduce the life of the high voltage power supply.

H

UMIDIFIERS

An evaporative humidifier can be mounted upstream of the air cleaner. It is best to install an atomizing humidifier downstream of the air cleaner because hard water salt deposits and water droplets may damage the air cleaner.

If an atomizing humidifier must be mounted upstream of the air cleaner:

1. Mount it as far upstream as possible. (Recommend at least 10 feet.)

2. Install a standard disposable furnace filter between the humidifier and the air cleaner to trap water droplets and hard water deposits.

3. Clean the air cleaner more frequently to prevent hard water deposit buildup.

O

UTDOOR

A

IR

When outdoor air is added to the return air duct, sufficient heat should be added to maintain the return air temperature of 40°F (4°C) minimum. Lower temperatures can cause ionizer wire failure.

S

HEET

M

ETAL

I

NSTALLATION

The electronic air cleaner is adaptable to all new or existing residential forced air furnace and cooling systems.

T

RANSITIONS

If the air duct does not fit the air cleaner cabinet opening, gradual transitions are recommended to reduce air turbulence through the air cleaner and maximize efficiency. Not more than 20° (about 4” per running foot) of expansion should be used on each side of the transition fitting (see

Figure 2).

AIRFLOW

MAXIMUM 4" DROP

PER LINEAL FOOT

AIR CLEANER

TRANSITION

SECTION

Figure 2

AIRFLOW

FURNACE

5

General Information

The air cleaner can be in any position, except with the access door facing down. The figures below show the various positions the air cleaner can be mounted.

AIR FLOW

AIR FLOW

SHEET METAL

TRANSITIONS

AIR FLOW

AIR CLEANER

AIR CLEANER

SHEET METAL

TRANSITIONS

AIR CLEANER

Figure 3

BASEMENT FURNACE

(LOW BOY)

Mounted horizontally in return plenum just above the furnace.

Figure 4

COUNTERFLOW FURNACE

Mounted horizontally in return duct or plenum, just above the furnace.

Figure 5

SPACE SAVER FURNACE

(HIGHBOY)

Side installation. Cleaner is mounted vertically, where return air enters side inlet of furnace.

AIR FLOW

AIR FLOW

BEFORE

AFTER

Figure 6

OFFSET INSTALLATION

Mounted between the duct and furnace. If there is less than 7in. between the duct and the furnace, move the return air drop then install the cleaner between them.

AIR FLOW

Figure 8

HORIZONTAL FURNACE

Mounted vertically in the return duct as close to the furnace as possible.

SHEET METAL

TRANSITIONS

AIR CLEANER

AIR CLEANER

BLOWER DOOR

6

AIR CLEANER

Figure 7

AIR FLOW

SPACE SAVER (HIGHBOY)

Mounted horizontally beneath the furnace. Raise furnace using a suitable wood structure and install cleaner.

General Information

T

URNING

V

ANES

If the air cleaner is installed adjacent to a 90° duct elbow, add turning vanes inside the duct to improve the air distribution across the face of the air cleaner (Figure 9).

Failure to follow this recommendation can reduce the efficiency of the electronic air cleaner.

L

OCATION

Figure 9

Select a location that is readily accessible for periodic inspection and cleaning. Allow a minimum of 24” clearance in front of the access panel and 12” clearance above the power tray for component removal and service space ( Figure 10).

24 1/4

18

[457]

24 7/8

[632]

24

[610]

FRONT

SERVICE

ACCESS

9/16 [14mm]

22 1/2 [572]

7 1/4

[184]

25 [572]

Figure 10

D

IRECTING

A

IRFLOW

T

HROUGH THE

C

LEANER

The air cleaner is set up for a left to right airflow, when facing the access door. For a right to left airflow, follow these directions:

1. Remove the pre-filter and cells from the cabinet. A plastic positioning spacer is located inside the bottom of the cabinet (Figure 11) to allow installation of the cells in the proper position with respect to airflow.

2. Remove the screw securing the spacer to the cabinet.

3. Reposition the spacer in the alternate hole at the bottom of the cabinet closest to the airflow exit side of the cabinet. Secure with the screw removed in step

2.

4. Seal the unused hole with duct tape.

5. Remove the cell handle and reattach to the opposite end of the cell. Turn cells around, replace in cabinet.

6. Replace pre-filters on the airflow entrance side of the cabinet. NOTE: The directional arrows on the cell end plates must point in the direction of airflow.

7

Figure 11

Installation

WARNING

Personal Injury Hazard

To avoid the possibility of property damage, personal injury, or death, a trained, experienced servicer should install this electronic air cleaner. Power supply must be disconnected before installation, and a thorough checkout of the unit installation must be completed before unit operation.

THIS AIR CLEANER SHOULD NOT BE INSTALLED ON THE HOT AIR SIDE OF DUCT-TYPE SYSTEMS.

NOTE: The following is a typical installation of the air cleaner on a highboy furnace (Figure 5). You may have to alter the installation to fit your application.

1. Remove the old furnace filter and discard.

2. Remove any existing dirt from the blower and ducts.

The air cleaner cannot remove existing dirt. The area must be thoroughly clean before you begin.

3. Remove unit access panel, and slide the pre-filters and ionizing-collecting cells out of the cabinet. Place them safely aside with the warranty registration card.

4. Locate the cabinet in the cold air return duct so that all of the return air flows through the unit (Figure 11).

If the furnace and air cleaner openings are different, use a transition refer to page 4, Figure 2.

5. Mounting holes are provided for ductwork attachment (Figure 12). The 0.140” holes are sized for #8 sheet metal screws, or 1/8” rivets. If the adjoining ductwork is flanged, install the screws so that the screw heads are inside the cabinet. This will prevent damage to pre-filters and optional charcoal after-filter during removal and installation after cleaning

ATTENTION: Be especially careful not to cover the airflow sensor orifice when sealing the air cleaner and ductwork.

This hole is located on the right hand side of the cabinet that holds the power tray assembly (when facing the unit). The hole is 3/16” in diameter and is located on the front of the power tray assembly (see Figure 1). In applications with minimum airflow, it is helpful to seal any openings on the power tray assembly or cabinet. This will increase the velocity of air flowing over the airflow sensor, enabling the airflow sensor to turn the electronic air cleaner on and off.

The only opening required for actuation of the airflow sensor is the 3/16” diameter hole previously described.

7. Set airflow direction (see “Directing Airflow Through

the Cleaner” section for the correct setup).

8. Install pre-filters and ionizer-collector cells.

9. Reinstall sliding power tray assembly into the cabinet.

10. Reinstall cabinet access panel.

CAUTION

SCREW

BLOWER

COMPARTMENT

MOUNTING HOLES

Figure 12

6. After the unit has been secured, seal seams air tight with duct tape or caulking.

Only a trained, experienced serviceman should install this electronic air cleaner. The power tray assembly should be removed before installation. To remove the power tray assembly, remove the two (2) screws (see Figure 12) in the top front of the cabinet. Remember to keep this hardware for reinstallation of the power supply when the air cleaner installation is complete. A thorough checkout of the unit installation should be completed before unit operation.

Read these instructions carefully before attempting to install or operate the air cleaner. Failure to follow could result in improper installation and a voided warranty. This electronic air cleaner has a BUILT-IN automatic air flow sensor (AFS) that senses the air movement within the duct and turns the electronic air cleaner on and off accordingly.

8

Electrical Connections

The EAC6 Air Cleaner is designed to take advantage of the integrated accessory control panel available on most furnaces.

The 120V electronic air cleaner tap on the furnace will provide power to the air cleaner only when the circulating air blower is in operation.

WARNING

To avoid the risk of electrical shock, wiring to the unit must be properly polarized and grounded.

WARNING

To avoid electrical shock, injury or death, disconnect electrical power before servicing or changing any electrical wiring.

CAUTION

If the electronic air cleaner is wired directly to the integrated accessory control on the furnace, it is imperative that the ampere rating of the control is sufficient to handle the current required by the air cleaner. All wire shall be in accordance with the National Electrical Code.

CAUTION

Do not wire directly to a multiple speed blower motor. Wiring to a multiple speed blower motor will damage the power supply and void the warranty.

CAUTION

Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation. Verify proper operation after servicing.

Power can be supplied to the EAC6 by one of two methods: By connecting the supplied power cord directly to a standard

120 VAC, 60Hz, single-phase receptacle, or by connecting the unit permanently to a power source. Follow the steps below to permanently connect the electronic air cleaner to a power source.

1. Remove the power tray assembly cover plate by removing two screws at the front of the electronic air cleaner.

2. Remove the wire nuts from the black and white wires. Remove the green ground wire from under the green ground screw. Remove the power cord.

3. Wire unit to 120 volt, 60 Hz, 1 phase supply. A fieldwiring compartment with knockout holes is located at the rear of the power tray assembly (Figure 14). The electronic airflow sensor will automatically cycle your

EAC6 Electronic Air Cleaner with the blower system.

The sensor is activated when the fan is on and airflow is present in the duct. It is pre-set at the factory and needs no adjustment (Figure 13).

9

BLACK TO BLACK

WHITE TO WHITE

Figure 13

GREEN TO GREEN

Startup, Adjustments, and Checks

Indicator Light Inspection

WARNING

The following procedure should be conducted by a qualified HVAC contractor or repair person ONLY. These procedures will expose hazardous electrically energized components. Disconnect power between checks and proceed carefully.

1. Turn the HVAC system blower OFF.

2. Switch the ON/OFF rocker switch to the ON position.Both the green input power light and red cell energized light should be visible.

3. Both lights should go out in approximately 20 to 60 seconds. This is the normal time for the electronic airflow sensor to complete its stabilization period.

3. Wait approximately one minute and turn the HVAC system blower to the ON position. Both lights should illuminate.

4. Perform the following checks to see if the red energizer light goes out.

• Cell access panel is removed.

• Rocker switch is switched to the OFF position.

• HVAC system is not running.

NOTE: The airflow sensor must go through its normal stabilization period when power is disconnected from the input to the air cleaner. This includes opening the access door on the cabinet, switching the ON/OFF rocker switch to the OFF position and any interruption of input power from the main power source. (A current breaker trip, fuse open, electrical power is interrupted).

10

Maintenance

CAUTION

PERSONAL INJURY HAZARD

Sharp Edges. Handle the cells carefully to avoid cuts from the sharp metal edges.

CAUTION

To avoid possible damage to the air cleaner, do not use laundry detergent to clean the cells or pre-filters.

CAUTION

Do not drop the ionizing collector cells. Damaged cell plates or ionizing wires can cause excessive arcing and noise.

Cells and Pre-filter Cleaning

Regular washing is necessary to ensure proper performance. A thorough washing once every two months will be adequate for most installations. More frequent washings (once a month) may be necessary on some installations (new homes for example) where there is new carpeting, plaster dust, or excessive cigarette smoke.

C

ELLS AND

P

RE

-

FILTER

R

EMOVAL

:

1. Push air cleaner switch to OFF. Wait 15 seconds.

Open access door.

2. Carefully remove the pre-filter and each cell. Set aside in a safe place.

cloth or sandpaper (not emery cloth) along the ionizing wires.

6. Stand cells and pre-filter up to drain. Drain for two hours.

NOTE: The aluminum collector cells may be slightly discolored after washing. This is a normal chemical reaction and will not harm your unit or affect its performance.

C

LEANING

NOTE: Wash cells one at a time.

1. Place enough hot water in a utility tub to cover a cell.

Dissolve 2 to 4 oz. of granulated automatic dishwater detergent (not laundry detergent) in the water.

2. Allow cell to soak for 30 minutes then agitate up and down until it appears clean. Remove cell from tub.

3. Repeat with second cell.

4. Next clean the pre-filter. Place pre-filter in tub and agitate the pre-filter up and down in the solution until it appears clean. Drain dirty water.

5. With a hose held approximately 10” above, rinse the cells and pre-filters. Do not spray the ionizing wires directly as they may snap and/or break. Be sure to rinse the edges of the cell frame thoroughly to dislodge any trapped lint or dirt. Carefully wipe a damp

C

ELL AND

P

RE

-

FILTER

R

EINSTALLATION

1. Replace pre-filter and cells in cabinet. Ensure the arrows on the cells point in same direction as airflows through the duct. If you have to force it past positioning spacer on bottom it is probably in a wrong position.

2. Reposition access door (engage tabs on lower edge of door into slots in cabinet.). Carefully close door.

3. Turn air cleaner switch to ON.

4. Remember the airflow sensor must go through its stabilization period. See NOTE in the “System

Checkout” section.

11

Quick Reference Troubleshooting

SYMPTOM

Rapid arcing or zapping.

Excessive ozone smell.

Excessive ozone smell

POSSIBLE CAUSES

Broken or loose ionizing wire(s)

Dirty ionizing-collector cell

Damaged or bent collector plates

Dirty insulator caps on ionizing-collector cell

Air cleaner is wired directly to a 120V power source

Loose high voltage connections

Radio or television interference

Hissing or sizzling noise Poor electrical contact

CORRECTIVE ACTION

Remove broken or loose wire and replace with new.

Wash per instructions

Straighten plates with needle nose pliers or replace entire ionizing-collector cell.

Clean with warm soapy water and rinse well

Qualified HVAC contractor must install air flow sensor (AFS) or rewire air cleaner to the HVAC system blower.

Repair or replace the component.

Uncommon occurrence ---

Check for good common ground for air cleaner.

Ensure that there is a good connection between the top of the ionizing-collector cell and the bottom of the ocntact board assembly. Contact HVAC contractor.

Green LED light is not ON

No power available

Loose wiring at ON/OFF switch

Defective ON/OFF switch

Reset circuit breaker. Replace fuse.

Check for secure connection.

Replace ON/OFF switch.

Red LED light is not ON

ON/OFF switch not in the "ON" position

Loose wiring within power tray assembly

Broken or shorted electrical component

Turn the unit ON.

Check for secure connections. Contact

HVAC contractor.

Remove broken wire and replace with new wire.

Excessive dirt buildup on ionizing wires

Clean wires with alcohol and allow to dry thoroughly before turning the unit ON.

Contact board assemblies are corroded or carbonized Replace contact board assembly.

Broken ionizing wire

Dirty ionizing-collector cell

Remove broken wire and replace with new wire.

Clean per instructions.

Foreign object located between collector plates

Damaged or bent collector plates

Insulators are corroded or carbonized

Remove object from ionizing-collector cell

Straighten with a pair of needle nose pliers or replace cell.

Replace insulators or ionizing-collector cell.

RADIO AND/OR TELEVISION INTERFERENCE

This trouble is not common, but when it occurs it is usually due to either continuous high voltage leak or discharge, or due to the absence of a good common electrical ground. Refer to conditions listed under “Arcing Noise” and “Hissing Noise” in the Quick Reference Troubleshooting Chart to determine a fix for this problem.

12

The following section is to be used by a qualified contractor or installer only. These procedures are not to be attempted by any person who is not qualified to work with high voltage or who is not familiar with this type of air cleaner.

Amana cannot be held responsible for any injury or damage by any person not qualified to install this product.

13

Troubleshooting (Qualified Servicer Only)

WARNING

PERSONAL INJURY HAZARD

The following procedures will expose hazardous live parts. Disconnect power before proceeding and between checks. Failure to do so could result in severe personal injury or death. Exercise the usual precautions when working with high voltage.

When the circuit has been de-energized, always discharge any residual current in the secondary with an insulated handle screwdriver. Always ground power supply and ionizing-collecting cell when bench testing.

RECOMMENDED SERVICE TOOLS

8” Screwdriver with insulated handle.

Phillips #1 and #2 screwdriver

Needle nose pliers.

Fluke #8021B multimeter or equivalent

Fluke #80k-40 high voltage probe or equivalent

LED Readings

The EAC6 is equipped with an input LED light (green) and a cell energized LED light (red) for indicating proper unit operation. When the unit is in normal operation (system fan running, access door in place, control switch in the “ON” position), and the green light is not lit, there is a problem in the primary circuit. If the red light is not lit, then the problem is a shorted secondary. Although failure of the indicating lights should not be overlooked, these conditions are unusual and rather remote. The lights are LED (Light Emitting Diodes) and are very reliable.

W BL

1. Safety Interlock Switch

2. ON/OFF Rocker Switch

3. 50 VA Stepdown Transformer

4. High Frequency Power Supply

5. Electronic Air Flow Sensor

6. Ionizing-Collector Cells

7. Contact Board Assembly

3

2 1

4

7

R

7

5 6 6

Figure 16

14

Troubleshooting (Qualified Servicer Only)

SECONDARY CIRCUIT PRIMARY CIRCUIT

If there is supply line voltage at the service connections and no input voltage to the power supply (green light out), the outage can be located by checking operation of the safety switch and the interconnecting wiring with a multimeter. Refer to circuit diagram (Figure 16) to check operation of the switches. Follow these steps:

1. Ensure air cleaner circuit breaker is in the ON position and fuse is not open.

2. The power supply board has a built-in internal fuse to protect the 24V transformer. It can be checked visually by inspecting the fuse. If the fine wire inside the fuse is broken, a problem exists in the 24V circuit of the power supply board. Do NOT replace this fuse. The entire power supply board must be replaced. The purpose of the fuse is not to protect the power supply board, but to function as a troubleshooting feature of the product to protect the transformer from damage.

3. If the fuse is NOT blown, check the ON/OFF switch and safety interlock switch for proper engagement and operation. This can be completed using a voltohm multimeter.

4. Check the ON/OFF switch and wiring. Disconnect wire between ON/OFF switch and power supply from the power supply. Disconnect wire between the ON/

OFF switch and safety interlock switch at the safety interlock switch. Connect a multimeter to disconnected wires. Turn the ON/OFF switch to the ON position. The meter should indicate a continuous circuit. If multimeter indicates an open circuit, check each wire and switch to determine which component is open. Repair or replace as needed.

5. Check the safety interlock switch and wiring. Disconnect wire between safety interlock switch and power supply from the power supply. Disconnect wire between the safety interlock switch and ON/

OFF switch at the safety interlock switch. Connect a multimeter to the safety interlock switch and disconnected wire. Depress the safety interlock switch.

The meter should indicate a continuous circuit. If multimeter indicates an open circuit, check wiring and switch to determine which component is open.

Repair or replace as needed.

WARNING

PERSONAL INJURY HAZARD

The following procedures will expose hazardous live parts. Disconnect power before proceeding and between checks. Failure to do so could result in severe personal injury or death.

A short circuit can develop if the space between the conductive or semi-conductive material is bridged. The bridging or short may be caused by damaged components, improper voltage or foreign material lodged between or on the components.

To check the secondary circuit for proper output voltages:

1. Remove power tray access cover and door panel.

2. Visually inspect. Ensure the system blower is operating, the control switch is ON and, using a multimeter and probe, input voltage is as specified.

Also check the cell contacts and high voltage contact board assembly for corrosion, excessive dirt build up, and electrical arc tracking (carbon path from stainless steel spring to grounded metal). If corrosion, build up, and or arcing is present, clean or replace contact.

3. Make connections from the high voltage probe to the multimeter in accordance to the operator’s manual.

The meter should be set for reading DC voltage at a

20-volt full scale.

4. Remove the cell access door. Attach the high voltage ground lead from the high voltage probe to the cabinet. While depressing the safety interlock switch, touch the ionizer wire support bar with the end of the high voltage probe (see Cell Trouble-

shooting Chart). The meter should read 6.2 kVDC

±0.2 kVDC.

5. If no voltage is measured, remove the first cell and check the second cell. The meter should read 6.2

kVDC ± 0.2 kVDC.

6. If proper voltage is measured, the first cell is shorted

15

Troubleshooting (Qualified Servicer Only)

(see Cell Troubleshooting Chart).

7. If no voltage is present, remove the second cell. Install cell number one and measure voltage as described above. If voltage is present, the second cell, which is now out of the cabinet, is shorted (see Cell

Troubleshooting Chart).

8. If no voltage is present, remove both cells and measure the power supply output. While depressing the safety switch, touch the end of the high voltage probe to either the front or rear contact board assembly (Figure 17). The meter should read 6.2 kVDC ±

0.2 kVDC.

Figure 17

NOTE: The cell contacts should be visually checked for corrosion, excessive dirt build up, and electrical arc tracking (carbon path from stainless steel spring to grounded metal).

9. If no voltage is measured, refer to the Power Supply

Troubleshooting section.

I

ONIZING

-C

OLLECTING

C

ELL

The cell is electrically energized through a contact terminal located at the top center of the cell. The ionizing wires and every other collector plate are electrically charged while each interleaving plate is grounded.

If the space between the conductive or semi-conductive material is bridged, a short circuit develops. The bridging or short may be caused by damaged components or foreign material lodged between or on the components.

Since the cell is removed from the unit periodically to wash away collected dirt, it is susceptible to physical damage.

Also, the cell contains one component, the ionizing wires, which due to their function have to be designed with a minimum structural support and are therefore susceptible to breakage. However, trouble related to a shorted collector cell is readily shown by the output indicating light and can be quickly isolated by this simple procedure.

To determine if a short exists in one or both of the collector cells, turn the electronic air cleaner off and remove both electronic cells from the cabinet. Shut the door and repower the unit. If the red “cell-energized” light comes on, an electrical short exists in one or both of the electronic cells. Replace cells in the unit, one at a time, to determine which cell is shorted.

Most troubles in the cell can be visually detected and corrected (reference the Troubleshooting Chart for diagnostic information).

NOTE: The ionizer-collector cells are NOT designed for field repair. Only the ionizing wires and insulators can be field replaced. It is not recommended to attempt to replace other cell components, i.e. collector plates, ionizer supports.

POWER SUPPLY

If the output light remains out with the cells removed the trouble is in the power supply. Using a multimeter and high voltage probe to check for proper output voltages can isolate specific problems in the power tray assembly.

To properly check the power supply, follow these steps:

1. Remove power tray access cover.

2. Ensure the system blower is operating, the control switch is on and input voltage is as specified.

3. Set the multimeter for reading AC voltage at a 200volt full scale. With test leads attached to the multimeter, touch the two transformer output lead junctions to the printed circuit board and read the meter.

4. If there is a no output voltage from the 24-volt transformer, replace the 24-volt transformer and power supply.

AIR SENSOR

If the air cleaner is installed in a location that is dusty and dirty, the sensor on the AFS can become coated with dirt and lint. This coating can insulate the AFS and keep it from operating properly. To clean the thermistor, take a cotton swab dipped in rubbing alcohol and carefully insert it into the hole located on the right hand side of the power pack assembly (when facing the unit). The hole is 3/16” in diameter and is located on the front of the power tray assembly. Carefully twirl the cotton swab between your fingers, making sure the tip is lightly in contact with the gray disc, cleaning the coating from the thermistor.

16

Troubleshooting (Qualified Servicer Only)

HIGH ALTITUDE OPERATION

Because the air is less dense at higher altitudes, there is a possibility of nuisance arcing. To correct this condition:

1. Turn the unit OFF. Disconnect cord or turn off circuit breaker.

2. Remove the two screws securing the cover to the power tray and remove it from the unit. (The entire power supply tray may be removed from the cabinet by removing two screws from inside the cabinet.) Do not lose screws.

3. Locate the jumper terminal (Figure 18).

Figure 18

4. With needle nose pliers, carefully adjust the jumper settings from HIGH to MED. Ensure that the jumper is firmly seated in the terminal.

5. Replace the power tray cover and secure it with the two screws.

6. Replace the access door and turn the unit ON.

This procedure will slightly reduce the output voltage, minimize arcing and reduce ozone production. If the condition does not improve, repeat the above procedure and move the jumper setting from MED to LOW.

If there appears to be excess ozone, go through the following checklist:

IONIZING-COLLECTING CELLECTOR CELL TROUBLE SHOOTING PROCEDURE

Loose ionizing wire(s)

Excessively Dirty Cell

Damaged (bent) plates

Improper ground

Cause

Large pieces of foreign matter lodged bgetween plates

Very dirty insulators

Broken ionizing wires

Excessively bent or misaligned components due to mishandling

Externally broken or cracked insulators

Correction

Replace loose wires

Clean as outlined in Maintenance

Straighten or replace collector cell

Check ground.

Remove

Clean as outlined in Maintenance

Remove all pieces of broken wire(s)

Straighten or replace collector cells

Replace insulator

17

Troubleshooting (Qualified Servicer Only)

SYMPTOM

Green indicator LED out;

Unit not operating

Green indicator LED out;

Unit operating

PROBABLE CAUSE CORRECTIVE ACTION

Input AC power not available Replace any blown fuses and reset tripped breakers.

Repair or replace any loose wires or bad connections.

Inspect Air Flow Sensor (AFS) for proper location and operation. If not ok, replace AFS.

Defective Safety Interlock system Check that access door is not open or ajar.

Repair or replace any loose wires or bad connections.

Replace defective momentary contact switch.

Defective ON/OFF switch

Inspect AFS for proper location and operation. If not ok, replace AFS.

Ensure ON/OFF switch is turned "ON".

LED blown

Repair or replace any loose wires or bad connections.

Replace defective ON/OFF switch.

Inspect AFS for proper location and operation. If not ok, replace AFS.

Replace power supply.

Red output voltage LED out

Objectionable noise, crackling/snapping sounds

Sizzling or hissing noise eminating from collector cell

Abnormal ozone smell*

Dirty or defective cell Wash dirty cell.

Remove any objects between adjacent collector plates.

Replace corroded or carbonized insulators.

Replace any broken ionizing wires.

Replace contact board if contacts are corroded or carbonized.

Corroded or carbonized contacts on contact board

Replace any defective wires.

Using alcohol, clean dirt buildup on contacts and let dry thoroughly.

Repair or replace any loose wires or bad connections.

Loose wires or bad power supply connections

Defective Transformer

Defective component or poor solder connection on Power

Supply Board

Arcing in collector cell

Replace transformer and power supply board.

Replace power supply board.

Wash dirty cell.

Remove any objects between adjacent collector plates.

Wash dirty cell, including any powder buildup on ionizing wires.

Straighten any bent plates

Replace contact board.

Poor electrical contact betweeen top collector cell contact and spring contact on contact board.

Damaged ionizing-collector cell See Ionizing-Collector Cell Troubleshooting

Procedure.

* It is normal for a new unit to produce more ozone than one that has been in operation for several weeks. The problem is self-correcting. If the odor still lingers or increases, please follow this troubleshooting guide's recommendation.

18

12

10

11

Ref. No.

1

10

11

12

13

14

15

8

9

6

7

4

5

2

3

PARTS LIST

Description

Power Tray Assembly (120 Volt)

High Frequency Power Supply

Electronic Air Flow Sensor Kit

ON/OFF Switch

Safety Interlock Switch

Cabinet Assembly

Pre-Filter (2 required)

Ionizing-Collector Cell

Ionizing Wire Assembly (1 wire)

Handle

Access Door

Contact Board Assembly (qty. 2)

Step Down Transformer (120 Volt to 24 Volt)

Insulator

Plastic Positioning Spacer (not shown)

Heating & Air Conditioning

®

ELECTRONIC AIR CLEANER AND

MEDIA AIR CLEANER

Comfort. Quality. Tru st.

TM

LIMITED ONE YEAR WARRANTY

Applies to EAC6 and MAC1 Models

RESIDENTIAL INSTALLATION

LIMITED FIRST YEAR

We will provide a free replacement part, f.o.b. Fayetteville, Tennessee, for any part which proves to be defective due to workmanship or material.

WARRANTY LIMITATIONS:

• Begins at date of original purchase.

• Applies only to original installation and normal use and service within the United States and Canada.

• Excludes door latch, disposable media cartridge, charcoal filter accessories, duct work, and installation.

• Applies to service performed by an authorized Amana ® brand servicer.

• Excludes non-residential installations.

WARRANTY IS VOID IF:

• Serial plate is defaced or removed.

• Product has defect or damage due to product alteration, shipping and handling, accident, fire, flood, lightning or other conditions beyond our control.

• Product is not installed according to our instructions and specifications.

• Product is operated in a corrosive environment containing concentrations of corrosive agents causing deterioration of metal components.

OWNER'S RESPONSIBILITIES:

• Provide proof of purchase (sales receipt).

• Provide normal care and maintenance.

• Make product reasonably accessible for service.

• Pay for freight, labor and travel.

• Pay for service costs for service outside servicer's normal business hours.

• Pay for service calls related to product installation.

IN NO EVENT SHALL WE BE LIABLE FOR INCIDENTAL OR

CONSEQUENTIAL DAMAGES*

*This warranty gives you specific legal rights and you may have others which vary from state to state. For example, some states do not allow the exclusion or limitation of incidental or consequential damages so this exclusion may not apply to you.

For answers to questions regarding the above or to locate an authorized servicer, contact: Consumer Affairs Department

1810 Wilson Parkway

Fayetteville, Tennessee 37334

1-877-254-4729 inside U.S.A.

1-931-433-6101 outside U.S.A.

Part No. 20182103S

Printed in U.S.A.

Applies to

EAC6 and

MAC1

Models  5/2002 Goodman Company, L.P.

Fayetteville, TN 37334

® is a trademark of Maytag Worldwide N.V. and is used under license to Goodman

Company, L.P. All rights reserved.

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