HERRMIDIFIER CAC-1000 Electronic Air Cleaner Instruction Manual

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HERRMIDIFIER CAC-1000
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CAC-1000 Electronic Air Cleaner

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Model CAC 1000
Electronic Air Cleaner

This manual provides information for location, installation, operation and service. Before installation and use of the air cleaner, carefully read these instructions to insure maximum benefits from the unit and to avoid needless service cost that can result from improper installation.

INTRODUCTION

This electronic air cleaner is technicality known as a two-stage electrostatic precipitator. It is designed to remove airborne particles — — dust, dirt, smoke — — from indoor air.
Air movement through the unit is controlled by its own blower system. As dirty air enters the unit it passes through a prefilter. The prefilter removes large particles by direct impingement.
The prefiltered air then passes through a two-stage electrostatic precipitator. In the first stage of electrica! operation, all airborne particles, even of submicroscopic size, are electrically charged (positive) as they pass through the ionizer. In the second stage of operation, the charged particles pass into an electrical field established between a series of parallel plates. Here the postively charged parti-cles are attracted to the plates, forming the negative element of the field. SPECIFITIONS

Rated
Capacity| 250-530 ft.3/min.
(425-860 m3/hr.)
Cell Weight| 17 lbs. (7.7 kg)
Unit Weight| 77 lbs. (34.0 kg.)
Power Consumption| 300 watts maximum
Electrical Input| 120 Volts, 60 Hertz or other voltage & frequency shown on data label.
1 Phase
Electrical Output| .9 ma @ 6200 VDC (Nominal)

OPERATION

CONTROL SWITCH (A)
The 3 position control switch located on the side of the unit controls the operation of the power pack and the speed of the fan. (Air Volumes: Lo-250 CFM; Med.-415 CFM; Hi-530 CFM)
ON/OFF LIGHT (B)
The on/off light monitors the electrical operation of your electronic air cleaner. When the control switch (A) is in the Hi, Med. or Lo position, power is being detivered to the power pack and the indicating light will glow. If the on/off light does not glow, the air cleaner is in need of attention. (Refer to service check list, Page 8.)
CELL ACCESS LATCHES (C)
The cell access latches located on the side of the unit hold the access door closed and are designed to auto-matically disconnect electrical power from the power supply when the access door is opened.

INSTALLATION

Two methods of installation are described below. Read each set of instructions carefully and select the method which best suits your application.
CAUTION:
ELECTRONIC AIR CLEANERS CANNOT BE USED IN AREAS WHERE COMBUSTIBLE GASES OR VAPORS ARE PRESENT.
T-BAR CEILING INSTALLATION
DO NOT INSTALL THE UNIT IN A T-BAR CEILING UNLESS THE UNIT CAN ALSO BE SECURED TO THE PERMANENT CEILING OR CEILING JOISTS, BEAMS, ETC. AS DESCRIBED BELOW.

1. The following items are supplied for securing unit:
   A. 4ea.- ¼- 20x 4” Eyebolts
   B. 4ea.- ¼ – 20 Hex Nuts
   C. 4a. – ¼ Lock Washers
   As required – 2/0 Chain (Min.) with mounting hardware (not supplied)

2. Carefully unpack the unit and check for damage incurred in shipment. Report any damage to the freight carrier immediately.

3. Open cell access door and remove the pre-filter and cell.

4. Install mounting angles using No. 8 self drilling screws as shown in Sketch B.

5. Install eye bolts as shown in Sketch B.

6. Select and remove a ceiling tile near the center of the area to be cleaned by the unit.

7. Attach a length of safety chain (2/0 Min.) to each of the four eyebolts. Fasten securely.

8. Lift unit into place and support unit while securingto permanent ceiling, ceiling joists, etc. See Sketch C. CAUTION:
   DO NOT ALLOW FULL WEIGHT OF UNIT TO REST ON T-BAR CEILING.

9. Connect electrical power to unit. See Field Wiring Diagram, Page 3.
   THE NATIONAL ELECTRICAL CODE REQUIRES THE USE OF FLEXIBLE CONDUIT FOR INPUT WIRING TO A CHAIN SUSPENDED UNIT.

10. If available clearance between permanent ceiling and T-Bar ceiling is less than 11”, mounting angles must be relocated on unit as required. This will result in further extension of the unit below the ceiling line.

11. If a carbon filter is used, remove filter from plastic bag and install in guide rails on back of cells.

12. Re-install cell, pre-filter and carbon filter.

13. Close access door and unit is ready for operation.

FLUSH MOUNT INSTALLATION

1. Carefully unpack the unit and check for damage incurred in shipment. Report any damage to the freight carrier immediately.
2. Open cell access door and remove the pre-filter and cell.
3. Select a location near the center of the area to be cleaned and locate the ceiling joists in that area.
4. Locate four mounting points (each being at a joist) and pre-drill holes into the joist and unit housing as shown in Sketch D.
5. Lift unit to ceiling and secure using four ¼” X 2½” lag bolts as shown in Sketch D.
6. Connect electrical power to unit. See Field Wiring Diagram.
7. Ifacarbon filter is used, remove filter from plastic bag and install in guide rails on back of cell.
8. Re-install cell, pre-filter and carbon filter.
9. Close access door and unit is ready for operation.

ELECTRICAL WIRING

Electrical access panel is located on the back of the  air cleaner cabinet assembly. Knockouts are provided in the top and side of the housing assembly. Wire the unit to a 120 volt, 60 HZ, 1 phase, or other rated voltage and frequency as shown on the data label on the unit.
Field wiring requires connecting black and white leads to corresponding building currentinput. Connect incom-ing ground (green) wire to the ground screw located in air cleaner.

SYSTEM CHECKOUT

After assemblying and installing the unit, switch the control switch on.
A. The on/off light should now be on. The light shows unit has line voltage.
B. Open cell access door. The on/off tight should go out. The blower should also stop.
ARCING (SNAPPING OR CRACKING NOISE)
An occasional! arcing noise may be emitted from the air cleaner. This is normal and is caused by an exceptionally large piece of dirt entering the collecting cell. An arcing noise may also be noted after cell washing. If this occurs and is constant, allow more time for the cell to dry. (Refer to service check list, Page 8.)

MAINTENANCE AND WASHING MAINTENANCE

When to Wash: Periodically the dirt collected by your unit must be removed. The frequency of washing will depend on the amount of dirt present in the air in your locality.
The washing frequency best suited for your unit can be determined by examining the dirt collected components at three week intervals. As the dirt begins to collect, you will notice a light film, then a very definite collection will be evident at a later examination. When there is a notice-able build-up of dirt, it is time to wash.
In most areas the collecting cell should be washed about every 12 weeks.
NOTE: Dirt build-up on the ionizing-collecting cell should not be confused with dirt stains. Dirt stains are normal and do not affect efficiency.

STEPS FOR WASHING

1. Switch control switch “OFF”,
2. Remove prefilter and cell.
3. Place components in automatic dishwasher, stationary tub, shower stall or over floor drain. Use hot soapy water and rinse thoroughly. As an aid to drying, rinse with clear, hot water. Allow components to dry thoroughly. (lonizing wires are easity broken. Handle the cells with care).
4. Replace prefilter and cell.
5. Close cell access door.
6. Switch control switch to “ON”.
   If arcing noise occurs due to wet cells, turn switch off and allow more drying time. If there are any problems, refer to the service check list.

TROUBLE SHOOTING

The following instructions are for use by qualified personnel.
WARNING:
THE FOLLOWING PROCEDURES WILL EXPOSE HAZARDOUS LIVE PARTS. DISCONNECT POWER BEFORE PROCEEDING.
Tools Required

• (2) screw drivers, 8” blade type with insulated handle
• Needle nose pliers
• Volt/ohm meter (If Available)
• High voltage meter to 10,000 volts DC plus (If Available)

There are two areas in which the majority of service problems originate:

1. The ionizing-collecting cell
2. The power supply

A. Electrical Trouble
CAUTION:

• EXERCISE USUAL PRECAUTIONS WHEN WORK. ING WITH HIGH VOLTAGE.
• WHEN THE CIRCUIT HAS BEEN DE-ENERGIZED, ALWAYS DISCHARGE ANY RESIDUAL CUR. RENT IN THE SECONDARY WITH AN INSU-LATED HANDLE SCREW DRIVER.
• ALWAYS GROUND POWER SUPPLY AND IONIZING-COLLECTING CELL WHEN BENCH TESTING.

1. lonizing-Collecting Cell 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 ground. Most troubles in the cell can be readily detected visually.
   Problem Areas| Corrections
   ---|---
   • Excessive dirt build-up| • Wash
   • Large pieces of foreign matter lodged between plates| • Remove
   • Very dirty insulators| • Clean
   • Broken ionizing wires| • Remove all pieces of broken wires and replace
   • Excessively bent or misaligned components due to mishandling| • Straighten or replace
   • Externally broken or cracked insulators| • Replace

System Check
A simple system check can be made by drawing an arc as follows:
a. Remove pre-filter and cell.
b. Remove pre-filter from cell.
c. Re-install cell without pre-filter.
d. Use screw driver to energize safety switch.
If high volt meter not available, proceed as follows:
e. Use an insulated screw driver to draw an arc between extended ground plate and ionizing wire. A sharp electrical arc of approximately 1/4” should be ob- served. This indicates proper cell operation. If weak arc or no arc is observed, follow cell and power supplycheckout.
f. If using high volt meter, voltage should read between 5.9 — 6.5 kilovoits. If voltage is below 6 kilovolts or no output at all, the problem lies in either the cells or power supply. See Service, Page 8.

2. Power Supply (without high volt meter)
   If there is primary power to the power supply and the secondary output voltage is absent or very low, the power supply is defective. A simple check can be made by drawing an arc, with an insulated handle screwdriver between common ground and the high voltage output terminal (c). A good power supply will produce a pro-nounced arc where a defective one will produce no arc at all or a very weak one.
   (Refer to Figure 1, Power Supply Test Points).

3. Power Supply Check (with DC high volt meter)
   Take reading with the high voltage meter at cell contact point. Should range 7 KV or higher (without cell connected).
   If voltage is above 7 KV, the problem is in the cell (see cell checkout procedure). (If voltage is below 7 KV (without cell connected), the problem is in the power supply. Proceed as follows:
   a. Remove power pack from the unit.
   b. Check for loose wires; if loose wire found, reconnect.
   c. If defective power supply is indicated, replace.

HIGH FREQUENCY POWER SUPPLY Part No. 347155-XXX
Thea following are approximate resistance values. + 20%
Test Points Resistance
[A] to [B)
70 Ohms for 120 VAC rated unit
33 Ohms for 100 VAC rated unit
300 Ohms for 220 and/or 240 VAC rated unit
[DO] to[C] 150 Meg Ohms

POWER SUPPLY TEST
The following are approximate output voltage at rated input voltage.
Tests Points Secondary DC Voltage
(DJ to (Cc) 6200 VDC ±  300V (Cells connected)
[0] to [Cc] 7000 VDC Min.b (Cells disconnected)

OUTPUT: This is a high frequency solid state circ designed for etectronic air cleaners with high performar reliability.

• 900 micro amps
• 624 .3KVDC (with cell connected)
• 7KVDC Min. (without cell connected)

B. Other Troubles — Their Symptoms and Corrections

1. Arcing Noise
   When an arcing noise is noted, it is usually located in the DC high voltage circuit. The ionizing-collecting cell is part of this circuit and normally the trouble will be found to be in the cell. The noise is caused by high voltage arcing to ground.
   An occasional arcing noise is normal and inherent in all precipitators, These occasional arcs are caused by large particles of dirt in the air such as a cigarette ash, insect, etc. Constant or repeated intermittent arcing should be checked.
   Check For:
   a. Loose ionizing wire(s) — repair or replace
   b. Excessively dirty cell components — clean
   c. Damaged (bent) plates of ionizer — straighten or replace
   d. Defective or loose high voltage lead or contact assembly — repair, replace
   e. Cracked insulator — replace
   f. Improper ground — check ground and correct if necessary.

2. Hissing Noise
   A hissing noise (or frying sound) usually stems from a loose high voltage connection or from an improper ground, The reduction in the designed spacing usually is caused by bends or deformities in the cell from mis-handling. Check For:
   a. Damaged (bent) plates or ionizer — straighten or replace.
   b. Loose ionizing wires — repair or replace.
   c. Dirty cetl or large piece of foreign material between plates — clean.
   d. Defective high voltage contact assembly — repair or replace.
   e. Poor connection between cell and contact assembly — repair.
   f. Loose high voltage wiring — repair.
   g. Improper ground — check ground and correct if necessary.

3. Humming Noise
   The ionizing wires have a normal tendency to vibrate when charged. On some occasions when atmospheric conditions are just right and the humidity is exceptionally low, the vibration is aggravated to the point where an audible hum can be noted. It is usually noted more in the northern sections of the country during the winter months. This condition can be further aggravated if the ionizing-collecting cell is very dirty. The condition is self-correcting when the relative humidity is increased or can be alleviated by washing the cell.

4. Radio and/or Television Interference
   This trouble is not common but when occuring is usually due to either a continuous high voltage “leak or discharge’, or from the absence of a good common electrical ground. Refer to checks listed under 1. Arcing Noise and 2. Hissing Noise.

5. Ozone
   Under normal operating conditions all electrostatic air cleaners produce minute quantities of ozone as an incidental by-product, as do televisions and other electrical appliances. The design of the unit has been tested and is far below the published permissible limits. The level of detection (when it is noticed) varies from individual to individual, some being more susceptible than others.
   Usually a new unit will produce more ozone than one that has been in operation for several weeks. This is due to the normal amount of sharp corners or manufacturing burrs on the ionizing-collecting cell. The voltage working on these areas however, tends to round them off, thereby they are self- correcting.
   An ionizing-collecting cell that has been damaged, where the designed spacing between electrically charged and ground components has been decreased, may also produce an abnormal amount of ozone.
   Check For:
   a. Damaged (bent) plates — straighten or replace
   b. Loose ionizing wires — repair or replace
   c. Dirty cell — clean
   d. Loose high voltage connections — repair or replace

SERVICE

QUICK REFERENCE TROUBLE CHART

Condition Or Symptom| Trouble Description| Probable Location| Possible Cause| Correction
---|---|---|---|---
Power On/Off Light (Amber) Out| Open Primary Circuit| Primary Wiring
On/Off switch| No power from ser- vice connection to power supply
Loose wiring Defective wiring| Obtain power
Repair Replace
Power On/Off Light (Amber) Out| Light out but unit working| Power
Indicating Light| Defective Light| Replace
Cracking Noise| Objectionable Noise| Cell| Loose Ionizing Wire Dirty Cell
Damaged (bent) plates Damaged (bent) ioni- zer| Replace Wash Straighten or replace Straighten or replace
Loud Hissing Noise| Same| Cell Hi-Voltage| Dirty Cell
Loose Hi-Voltage Connection
Insufficient Ground| Wash Correct
Correct
Radio and/or TV Interference| Same| Cell
Hi-Voltage Connection| Improper Ground Loose Hi-Voltage Connection| Correct
Correct
Odor of Ozone| Same| | See page 7|

ORDERING PARTS

When ordering replacement or spare parts, state the Unit Model No. and Serial Number. These numbers are shown on the data plate located on the cabinet housing.
Complete parts list are available upon request. Orders will be filled in accordance with the terms and conditions of current price sheets.
A return material request form must accompany ail return parts.

WARRANTY

All TRION Electronic Air Cleaners are warranted for compo-nent failure and workmanship for a period of one year after purchase, provided the Warranty Card has been properly filled out and returned. Do not return defective parts without prior permission from the factory.

PARTS LIST

NOTE: Specifications subject to change without notice.

P.O Box 760
101 McNeill Road
Sanford, North Carolina 27331-0760
Customer Service: 800-227-3917
Fax: 800-458-2379
Trion Limited
Reith Way, West Portway Industrial Estate
Andover, Hampshire SP10 3TY
Tel: (01264) 364622
Fax: (01264) 350983
Manual Part No. 147515-001 12/95

References

• Repair Your Grill: Shop Replacement Parts for 24,880 Models
• Herrmidifier Air Cleaner Parts - Select From 27 Models

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