Trion AIR BOSS 60 User Manual

Field Assembled

ELECTRONIC

AIR CLEANER

AIR BOSS Model 60 Series

without

Integral Washing System

•

INSTALLATION

•

OPERATION

•

SERVICE

For Model Numbers

60- ___-01

Electrostatic Precipitators for

Commercial & Industrial

Applications

101 McNeill Road

[phone] • Fax: [phone] • [phone]

www.trioninc.com

MANUAL Form No. 61-0147B • Sept 01

Sanford, NC 27330

•

TABLE OF CONTENTS

SECTION I DESIGN

For The System Design Engineer Page

1. General Description ...................................................................................................................................... 3

2. System Design and Floor Layout ................................................................................................................ 3

3. Outdoor Installations ....................................................................................................................................4

SECTION II INSTALLATION

For The Installing Contractor

1. Unpack and Inspect....................................................................................................................................... 4

2. Assemble Framework ................................................................................................................................... 4

3. Attach Adjoining Ductwork..........................................................................................................................4

4. Install Ionizing-Collecting Cells ................................................................................................................... 5

5. Install Air By-Pass Baffles............................................................................................................................ 5

6. Connect Drain................................................................................................................................................ 5

7. Mount Controller............................................................................................................................................ 5

8. Complete Wiring............................................................................................................................................5

A. High Voltage Wiring .................................................................................................................................. 5

B. Primary Wiring .......................................................................................................................................... 5

9. Check Out For System Start-Up................................................................................................................... 6

SECTION III OPERATION AND SERVICE

For The Maintenance Engineer

1. Introduction and Principle of Operation ..................................................................................................... 6

2. General Description ...................................................................................................................................... 6

3. Initial Start-up ................................................................................................................................................ 6

4. Routine Maintenance .................................................................................................................................... 7

5. Periodic Maintenance ................................................................................................................................... 7

6. Troubleshooting............................................................................................................................................ 8

7. Spare Parts..................................................................................................................................................... 9

8. Troubleshooting Reference Chart ............................................................................................................. 10

Pages 11-14........................................................................................................................................NOT USED

SECTION IV REFERENCE

Illustrations and Drawings

Figure 1 Single Unit Outline............................................................................................. 15

Figure 1A Dimensional and Specification Data................................................................ 16

Figure 2 Exploded View of Single Section unit ............................................................. 17

Figure 3 Recommended Foundation and Drain Basin Design..................................... 18

Figure 4 NOT USED .......................................................................................................... 19

Figure 5 Structural Framework Assembly...................................................................... 20

Figure 6 Cell Arrangement and Bus Bar Connections.................................................. 21

Figure 6A Diagram of Bus Bar Connections .................................................................... 22

Figure 6B Diagram of Bus Bar Connections .................................................................... 23

Figure 7 Model 60 Cell Assembly.................................................................................... 24

Figure 8 Model 60 Air Baffle Arrangement..................................................................... 25

Figure 8A Diagram of Air Baffle Arrangement.................................................................. 26

Figure 9 NOT USED .......................................................................................................... 27

Figure 10 NOT USED .......................................................................................................... 28

Figure 11 Control Schematic (Supplied with specific unit configuration).................... 29

Figure 12 Field Wiring (Supplied with specific unit configuration)............................... 30

Figure 13 Access Door Electrical Interlock Arrangement .............................................. 31

Figure 14A High Voltage Cell Termination.......................................................................... 32

Figure 14B NOT USED .......................................................................................................... 32

Figure 15 High Voltage Lead Termination at Power Supply........................................... 33

2

SECTION I DESIGN

FOR THE SYSTEM DESIGN ENGINEER

1. General Description

Model 60 equipment consists of factory-assembled
components to be “bu ilt-up” i n the field i nto a com pleted
unit. Depending on the system requirements, the
installation may consist of a single unit or a multi-section
unit. A multi-section unit is simply two or more single
units placed side-by-side.

The factory-assembled c omponents are design ed to be
mounted on a field prepar ed pad in the form of a drain
basin, typically constructed of poured concrete.

The standard major c omponents suppl ied with eac h unit
for installation are as follows:
A. Framework – Support members, complete with

sheet metal panels on the top and sides, to rec eive
and locate the ionizing-collecting cells.

B. Ionizing-Collecting Cells – The elements us ed to

remove and collect the contaminants from the air
stream.

C. Control/Power Supply Box(s) – Located in the

control enclosure and con verts 115VAC to the hi gh
voltage DC required to energize the ionizing­collecting cells.
The programm able logic c ontro ller ( PLC) elec trical l y
sequences the washing opera tion. The Pulse W idth
Modulated (PWM) power supplies, providing the
necessary high voltage for the air cleaner and the
controls initiating and sequencing the wash cycle
are furnished in a NEMA 1 2 enclosure des igned for
remote mounting. The distance between the
controller and unit must be determined as the
interconnecting high voltage leads are furnished to
the specified length. Consult factory for distances
greater than 50 ft. Cables are not to be spliced at
any point along their length. In addition, the
enclosure is a central junction for the primary wiring.

D. Accessories – Electrical interlocks, lights and

switches for safety and monitoring.

Note: Trion Tridex Detergent is spe cially formulated
for use with Trion electronic air cleaners. Use of
other cleaners and detergents, not specifically
approved by Trion, will cause possible failures in
the unit and will void any and all warranties on our
equipment.

To maintain the selected cleaning efficiency, it is
important to assur e that the total air volum e (c apacity in
CFM) is uniform l y distrib uted ac ros s the ent ir e f ac e area
of the unit. However, since mos t air ducts are design ed
to handle air velocit ies greater than t he rated ve locity of
the air cleaner, it is necessar y to properly trans ition any
attached ducting. If possible, a contr actio n ratio of 1 in 3
(approximately 20°) should be maintained. If space
prohibits, turning vanes, air baf fles or other m eans may
be utilized. Ducting – where attache d to the s heet m etal
panels – should be gasketed, caulked or otherwise
made water and airtight.

When there is a danger of rain, snow or debris being
drawn into the system with outside air, the m ake-up air
intake should be protected with rain louvers, hooding
and hardware cloth to prevent th e rain, snow or debris
from entering the electronic air cleaner.

Contaminants to be col lecte d – such as o ils in vap orous
state – must be condens ed into particulate form prior to
entering the ionizing-col lecting cells in order to maintain
the anticipated efficiency. Gases, vapors or any non­particulate cannot be precipitated and will therefore
pass through the air cleaner. An y condens ing that tak es
place downstream from the air cleaner defeats the
purpose. By the same token, heavy concentrations of
water vapor, or other matter that becomes highly
conductive when condensed, must be prevented from
entering and/or condensing in the c ollectin g elem ents to
prevent electrical arc over and shorting.

SAFETY NOTE:
Factory designed acc ess to all electrically charg ed
high voltage components contain electrical
interlocks for the safety of operating personnel. Any
additional access that may be provided in the
system, where there is access t o high vo ltage, must
be equipped with such interlocks. Interlocks are
readily available from the factory.

A foundation and drain b asin design must be provided
to carry off the wash water used to clean the ionizing­collecting cells. It is suggested that a new concrete
basin be poured pr ior to the scheduled shipm ent of the
hardware. Refer to Figur e 3, Recommended F ou nda tion
and Drain Basin Layout Drawing.
Serious considerat ion should be given to an y deviation
from the suggested design, which would result in
improper drainage, leakage, air bypass and mounting.

In addition to the governing plumbing codes, the
following points should be considered in the
construction of the basin.

2. System Design and Floor Layout

The arrangement of the supplied components and the
general layout of the system will vary according to
application, adjoining equipment and available space.
However, there are several basic factors pertaining to
all installations that must be considered:

A.) Drain lines m ust be of adequat e size t o car ry off the

required amount of detergent/wash water used.
Refer to the piping schematic drawing, Figure 4.

B.) Drain lines must be suitabl y trapped and vented to

prevent line gases from entering the air handling
system.

3

C.) The basin floor should be properly pitched and

finished to prevent puddling.

D.) The cross mem bers containing the anchoring st uds

to receive the air cleaner base frame mus t be even
and level to provide a proper foundation for the
metal framework base.

(A) Framework
(B) Ionizing-Collecting Cells
(C) Controller with Power Supplies

Where the installation site is not suitable for a poured
concrete basin, rust r esistant metal pans may be used.
The metal should withstand the weight of service
personnel in addition to the weight of the unit.

Each installation varies according to needs, but
normally the controller is located near the air cleaner.
Ideal mounting heig ht is at e ye level f or ease in r eading
the instrumentation and to facilitate service.

For ease in maintenance and component removal,
adequate space, 39” Minimum Required, must be
provided in front of all access do ors, motors, pum p and
accessory equipment.

3. Outdoor Installations

Requirements for outdoor pr otection var y in acc ordance
to climate and equipment component arrangement for
the particular job. The best approach, for equipment
protection, is the construction of a heated shed or
building over the installation. As an alternative, the
installing contractor should treat the equipment as
required to meet the specific needs.

Controller/PWM Power Supplies
As the controller/power supplies are designed for
remote mounting, the y can be, in many cases, locate d
indoors and still be reasonably close to the main
cabinet. If located outdoors with t he cabinet, it must be
weather protected.

Contact the local Trion Sales Office or the factory if
questions arise, or any additional information is
required.

SECTION II INSTALLATION

(D) Accessories
For the protection of the components, it is

recommended that those materials not immediately
needed for installation be stored in the container in
which they are received in a safe, dry and clean
location. This is particularly true with the ionizing­collecting cells, which may be damaged when not
properly handled.

2. Assemble Framework

T he base frame, two sides and top are m atch marked
on the air entering sid e of the air clea ner at the f actory
prior to shipment. See Figure 5.

(A) Position the base frame on the drain basin. Make

sure it is located with the marking “BOTTOM
FRONT” on the air entering side. The anchoring
studs in the drain basin should be located on the
inside of the frame channels and the entire frame
should be level. Shim as necessary.

(B) Secure the base as illustrated. It is important that

the studs do not protrude above the base frame
channel. Cut top of studs, if necessary. Each anchor
should be treated to prevent rust.

(C) Attach the side and top panels, match marking

where the pieces join o n the air entering side; A to
A, B to B, etc. The r equired fas teners are p ackaged
and marked for the framework.

(D) After the outside frame structure is complete,

position and secure the intermediate cell supports.
The side to receive the air bypass strips marked
“FRONT” should be positioned toward the air
entering side.

FOR THE INSTALLING CONTRACTOR

1. Unpack and Inspect

At the time the unit is received, all shipping c ontainers
and their contents should be exam ined f or dam age. A ny
damage occurring in shipment must be immediately
reported to the carrier, an inspection report completed
and a claim filed at the receiving point.

The number of shipping containers included in the
shipment is dependent upon the unit size and type.
When packaging the material for shipment,
consideration is given to grouping the com ponents into
the installation categories in which they will be used.
The packing list included with shipment identifies the
various items to a specific box number. In gener al, the
grouping is as follows:

3. Attach Adjoining Ductwork

Depending on the applicatio n, the installation plan m ay
or may not call for adjoining duc t work on th e a ir ent ering
and/or air leaving sides of the cabinet.

When adjoining ducting is to be installed, attach to the
flanges on the air ent ering and air leaving sides of the
unit. Maintain structural squareness during attachment.
The seam should be made air and watertight by
caulking or gasketing.
The seam between the concrete drain basin and the
metal work must be c aulked or grouted to form a good
watertight seal.

When a blower is ins talled downstream from the Trion
cabinet, the ductin g bet ween the c abin et and t he blo wer

4

will be under negative pressure and s hould be m ade air
tight to prevent infiltration of contaminated air.

After the ductwork has been installed, clear remaining
material or debris from inside ducts and bottom of
cabinet.

4. Install Ionizing-Collecting Cells

Before placing the ionizing-collecting cells into the
framework, the electric al cell-t o-bus con nectors m ust be
inserted through the holes located in the flang es of the
end plates and secured into place. There are two
connectors per cell, one short collector standoff and a
long ionizer standoff. Connect the bus bars and cell
wiring as shown on Figure 6, 6A, 6B and Figure 7.

NOTE: Follow the direction al arrows located on the
cell end plates. The side of each c ell containing the
spiked ionizer blades must be located on the air
entering side of the cabinet.

5. Install Air By-Pass Baffles

The air baffles provided are to be secured to the air
entering side of the unit to b lock of f the air ga p between
the frame and the top and the sides of each c ell. They
are secured into place with the screws provided. The
vertical baffles for the cell ends are all rubber backed.
The horizontal baffles across the top of each cell are
plain. There are different sizes of each. Refer to Figure
8 and 8A for the arrangement.

6. Connect Drain

Connect a drain line to the pipe coupling in the cabinet
drain basin in accordance wi th the governing plumbing
codes. The drain line must be sealed with a trap or
other means to prevent air by pass . If a trap is used, it
should hold sufficient water column to overcome the
system air pressure and to assure that loss of liquid
from evaporation between cleaning periods will not
break the seal. The drain line should not be smaller than
the drainpipe coupling, or it will otherwise restrict the
flow of water.

7. Mount Controller

The Controller should be mounted at eye level and
located as close to the air cleaner as pr actical. It must
be mounted indoors out of the weather unless suppl ied
with a weatherproof cabinet. Allow sufficient space in
front of the access door(s) for service. Refer to
appropriate Control/Rem ote PWM Box Outline Dr awing
for mounting hole layout and dimensions.

8. Complete Wiring

A. High Voltage Wiring

WARNING:
EXERCISE ALL THE NORMAL PRECAUTIONS
WHEN WORKING WITH HIGH VOLTAGE AND
COMPLY WITH NEC AND ALL APPROPRIATE
LOCAL CODES.

The high voltage wiring consists of interconnecting
the ionizing-collecting cells into banks with bus
bars, then wiring each bank of interconnected cells
to its corresponding power supply with the high
voltage cable.

NOTE: IT IS IMPORTANT TO WIRE EACH BANK
OF CELLS TO ITS CORRESPONDING POWER
SUPPLY AS EACH POWER SUPPLY IS
MARKED WITH A SPECIFIC OPERATING
RANGE AND SIZED FOR A GIVEN BANK OF
CELLS.

Refer to Figure 6A or 6B, and select the
appropriate unit model. Interconnect the cells with
the bus bars as shown. When fully connected, the
cells will be grouped into banks as indicated by the
letters “A” and “B”.
Next, wire the interconnected cell banks to their
corresponding power supplies with the high
voltage cable provided. Depending on the size of
the unit, there may be from 3 to 14 PWM Power
Supplies.

NOTE: Each high voltage cable should be run
in a separate conduit and must not be spliced
at any point between the power supply and the
cell termination.

Use the blue cable for the ionizer and the black
cable for the collector plates. At the cell
termination, the outer jacket of insulation should
carefully be stripped back from the inner layer of
insulation a distance of four (4) inches to prevent
tracking.
Normally the high voltage cable entrance should
be made from the top of the ductwork. If the
installation demands entrance from some other
point, the conduit should be sealed where it
terminated at the duct to prevent moisture from
entering the conduit during the washing operation.
At the power pack termination, be sure the blue
ionizer cable is connected to the terminal marked
IONIZER and the black collector cable is
connected to the terminal marked COLLECTOR.

B. Primary Wiring

(1.) Duct Door Electrical Interlocks

(Two are furnished as standard) - Outside each
duct access door.

(2.) Duct Door Electrical Interlock and Pilot

Lights

(Two are furnished as standard) – Outside each
duct access door and adjacent to the electrical
interlocks.

(3.) Duct Lights

(Two are furnished as standard) – On air entering
side and on air leaving side of air cleaner on the
inside of the ductwork.

(4.) Disconnect Switch and Pilot Lights

(Four are furnished as standard) – T wo on Inside,
Two on Outside of each access door at most

5

convenient location near the door. Those located
inside are wired in series with the electrical
interlocks and used as a s afety measure to control
the primary power to the high voltage power
supplies from inside th e duc t. Those located outs i de
control the duct lights.

Grounding

An earth ground must be provided to the Model
60 cabinet and control. All ground connections
must be in contact with bare metal and securely
affixed. Ground conductor size and connection
means will be in accordance with all applicable
electrical code standards.

that each alternate plate is charged while the
intermediate plates are electrically grounded.

Periodically, depending on the type and concentration of
contamination in the air, the contaminate is washed
from the plates by manuall y cleaning the cel ls while in
place or removing them from the unit and then cleaning.
Two major functional components comprise the air
cleaner:

(1) Ionizing-collecting cells to ionize and collect

airborne particul ate matter.

(2) Power supply(s) to supply high voltage direct

current to the ionizing-collecting cells.

9. Check Out for System Start-up

When the installatio n has been completed, ass ure that
the equipment is ready for start-up by checking the
following:

A. Ensure all construction debris is removed from the

ionizing-collecting cells, drain basin and ductwork.

B. The drain line from the Trion drain basin is clear and

completely connected to its point of termination.

C. Supply line power is available and electrical wiring

is completed to the following components:

1. Controller

2. Electrical Interlocks

3. Ionizing-Collecting Cells

4. The System Fan

5. Duct Lights, Indicating Lights and Switches

SECTION III OPERATION & SERVICE

WARNING

RISK OF ELECTRIC SHOCK
These servicing instructions are for use by qualified
personnel only. To reduce the risk of electric shock,
do not perform any servicing other than that
contained in the operating instructions unless you
are qualified to do so.

FOR THE MAINTENANCE ENGINEER

1. Introduction and Principle of Operation

The Trion electronic air cleaner is technically known
as an electrostatic precipitator. In this type of
equipment, all airborne particles, even of microscopic
size, are electrically charged (positively) as they pass
through a high voltag e ionizer. These char ged particles
are then attracted and adhere to a series of parallel
collecting plates, which form the negative elements of
an electrostatic field.

The ionizer consists of charged stainless steel spiked
blades spaced between grounded electrodes. The
collecting sectio n consis ts of para llel plates arrange d so

Normally, systems are designed for collection
efficiencies in the range of 90 percent or more.
Collecting a contaminant at these efficiencies,
especially when there are high c onc e ntrations can result
in large accumulations in a relatively short period.
Therefore, maintenance must encompass two areas;
the operation of the equipment for efficient collection
and the systematic removal of the collected
contaminant.

2. General Description

The ionizing-collecting cells (contaminant collecting
elements) are housed in t he cabinet on u nistrut fram es.
They can be removed from the unit as required, from
the backside (do wnstream airf low side). W hen installing
cells into the cabi net, observe the direc tional arrows on
the cell end plates. The side of the cell containing the
spiked ionizer b lades alwa ys must be loc ated on the air
entering side.

The Power Supply(s) convert the 11 5 volt, 60HZ, singl e
phase AC supply to the high voltage DC needed to
power the ionizin g- c ollec ti ng c e lls . Pot ent ial of 13 KVDC
are required for the ionizer s ections and 6.5 KVDC for
the collector sections of the cells.

3. Initial Start-up

A. Inspect the inside of the adjoining ductwork and

Trion cabinet to be s ure it is clean and free of any
debris or constructio n materials . Especial ly note the
opening in the drain basin for any restrictions. T he
ducting, where secured to the cabinet collars,
should be sealed water t ig ht e ith er with gasketing or
caulking.

B. Inspect the ionizing-collecting cells to se e that all of

the ionizing blades or wires are int act, that n o large
pieces of foreign material are lodged between the
plates, and that the cells are properly installed i n th e
cabinet with the spiked ionizing blades or wires
located on the air entering side.

C. Check the high voltage leads to see that they are

connected to the proper terminal both at the

6

ionizing-collecting cells and inside the controller.
Refer to Figure 14A.

D. Be sure that the drain lines from the Trion cabinet

drain basin are com pletely connected and pro perly
terminated. A trap or seal of some type should be
incorporated in the line to prevent air b ypass .

E. Be sure that electrical power is available, that the

wiring is completed, and that the system blo wer is
ready to energize.

F. Be sure that all access door interlocks are closed.

The Air Boss contr oller (Optional) contains a dig ital
LED display for kilovolt and milliampere readings.
The milliamme ter should be observed on a routine
basis to be sure that it is reading within the
prescribed operatin g range as marked on the data
plate. For those units containing a voltmeter, the
collector voltage should be between 6 and 7 KV,
and the ionizer between 12.5 and 13.5 KV.

The ATS controller a nd rem ote PWM box both have
LED indicating lights to show power to the PWM
power supplies. Flickering or failed LED’s indicate
electrical arcing and/or power failure.

G. Close the system electric al s upp ly s witches, m ak ing

power available to the Trion controller and the
system fan.

H. Turn the controller selector switch to the “ON”

position. The blo wer sho uld run ( if instal led) and the
power supply(s) should be energized. Electrical
arcing within the ionizing-c ollecting cells m ay occur.
It is a normal occurrenc e caus ed by accumulation of
dusts from construction or other sources in the
cell(s) and should subside quickly. If the arcing is
continuous and does not subside, recheck the
routing of the high voltage lea ds betwee n the po wer
supply(s) and the cell(s). Refer to the field-wiring
diagram. The ionizer lead m ust be connecte d to the
ionizer and the collector lead to the collector.

4. Routine Maintenance

A. Washing Frequency

The frequency that the collected dirt is to be washed
from the unit depends upon the t ype and am ount of
dirt in the air to be cl eaned. Dirt, which is greasy in
nature, tends to harden af ter collection and should
be washed away often. Likewise, units operating
under extremely heavy dirt loads should be washed
more often as a larg e build-up of collect ed material
will have a tendency to “blow-off” if permitted to
remain on the collecting elements for long periods
of time. In that the type and amount of dirt varies
geographically (and fr om one location to another in
any given area) it is recommended to start operation
with a washing frequency of at least once a month.
This schedule may then be alter ed as needed after
visual examinations of the collected material
contained on the ionizing-col lec t ing ce lls.

B. Detergent

Effective washin g is d epe ndent upon detergen t. T he
detergent, as supplied by Trion, Inc., is formulated
specifically for electronic air cleaners . If substitutes
are used, they must be appro ved by Trion, so as to
not void the warrant y. They should be safe for us e
in ventilation systems and non-caustic, as 95% of
the ionizing-collecting cells are constructed of
aluminum, special high voltage insulation and
gasket seals.

C. Electrical Operation

5. Periodic Maintenance

A. Controller - Every 12 Months

The inside of the controller cabinet should be
examined for accumulated dirt and dust. If required,
the components should be cleaned using a good
brand of electrical contact cleaner. All terminal
connections should be checked f or securement and
tightened or reworked as required.

B. Ionizing-Collecting Cell – Every 6 to 12 Months

Remove and inspect th e ionizing-coll ecting cells for
excessive dirt accumulations. Manually clean as
required in a soak tank, commercial car wash, or
with a pressure hose or pressure cleaner using a
low-pressure setting. At this time, particular care
should be taken in cleaning each of the insulators.

WARNING:

DO NOT USE HIGH PRESSURE STEAM CLEANING
EQUIPMENT TO CLEAN CELLS. THE EXCESSIVE
HEAT AND PRESSURE WILL CAUSE THE PLATES
TO WARP AND IN TURN POSSIBLY CAUSE
EXCESSIVE ARCING.

C. Filter Devices – Every 4 to 6 Months

Hoods, impingers, metal mesh filters, ducts and
other appurtenances shall be cl eaned to bar e metal
at frequent intervals prior to surfaces becoming
heavily contaminated with grease, oil or other
contaminate. It may be advantageous to clean
readily removable items, such as impingers, metal
mesh filters or other permanent filter devices in a
soak tank, with a press ure hos e or pr essur e cleaner
low setting. After cleaning to bare metal,
components shall not be coated with powder or
other substance.

When a cleaning service is used, a certificate
showing dates of inspection and/or cleaning shall be
maintained on the premises.

WARNING
Flammable solvents or other flammable
cleaning aids shall not be used.

7

At the start of the cleaning process, electrical
switches that could be accidentally activated shall
be locked out. Com ponents of the fire suppression
system (if installed) shall not be rendered
inoperable during the cleaning process.

Care should be taken not to apply cleaning
chemicals on any fusible links or other detection
devices of the automatic extinguishing system.

6. Troubleshooting

WARNING:
EXERCISE THE USUAL PRECAUTIONS WHEN WORKING
WITH HIGH VOLTAGE. THE MAXIMUM OPERATING
OUTPUT FROM THE POWER SUPPLY IS 15,000 VDC AND

5.5 MA. to 11.0 MA. WHEN IN PARALLEL.

The most common outage is a short in the
secondary circuit and is best located through the
process of elimination. Symptoms are a flickering
indicating light accompanied by an arcing noise in
the ionizing-collecting cell(s) or an indicating light
that is not glowing.

A flickering ligh t with a n ar c i ng n ois e is a n i ndic a tio n
of a high resistance s hort circuit and a light that is
not glowing is an indicati on of a dead short. (A light
that is not glowing ca n also be an indication of an
open circuit in the primary circuit. Refer to the
paragraph on open circuits.) The short may be in
the power supply, the high voltage cables or the
ionizing-collec ting cell(s ). To is olate the sh ort to an y
one of these three components, proceed as follows:

IF SAFETY SWITCHES ARE CLOSED AND CIRCUIT IS
ENERGIZED, DO NOT TOUCH HIGH VOLTAGE. WHEN
THE CIRCUIT IS DE-ENERGIZED, ALWAYS BLEED OFF
REMAINING STATIC CHARGE WITH AN INSULATED
HANDLED SCREW DRIVER BY SHORTING to GROUND

THE POINTS OF HIGH VOLTAGE DC POTENTIAL

.

WARNING

Risk of Electrical Shock

The servicing Instructions are for use by qualified
personnel only. To reduce the risk of electric shock,
do not perform any servicing other than that
contained in the service instructions unless you are
qualified to do so.

A. Introduction

This section on troubleshooting provides a
description of potential malfunctions, their cause,
location and correction. A Trouble Reference Chart
listing the most probable causes and corrections
follows the general text.

The electronic air cleaner is the unit within the
system that has the highest efficiency collection
rating and is also the one with the high est potential
for malfunction. W hen a malfunction does oc c ur, the
outage is usually found in the electrical secondary
circuit in the ionizing-collecting cell(s).

WARNING

When safety interlock switches are closed, do not
come in contact with high voltage components. The
operating output from the high voltage power
supply(s) is 12,600 VDC and 6 MA. to 11.0 MA.

When the power supply(s) is de-energized there Is a
20 second delay for the voltage to decay. Always
short from ground to a point of high voltage with a
well Insulated jumper wire or an insulated handled
screwdriver to bleed-off any remaining residual
charge.

1. Disconnect both high voltage leads from their
respective terminals in the power supply and
support them away from any point of contact.

2. Energize the power supply:
a. If the light still flickers or does not glow, the

trouble is indicated t o be in the power supp ly. First,
check the inline fuse mounted on the circuit board
and replace if it is blown. Second, replace the power
supply in its entirety.

b. If the light glows steady with the leads
disconnected the power supply is indicated to be
normal.

Indicating lights are install ed in t he fac e pane l of the
control to monitor the electrical operation of each
power supply and the ionizing-c ollecting cell(s) they
energize. The quant ity of power suppli es per unit is
dependent upon unit size with one or two power
supplies for each ionizing-collecting cell tier in
height. Other than the basic hand tools, it is
advantageous to have a volt/ohm /milliammeter with
a 20 KVDC high voltag e probe. These instruments
are standard catalog items by several
manufactures.

B. Secondary Short Circuit

NOTE: It will be necessary to close the access door
electrical interlock switch operated by the access
door, to complete the primary circuit to the power
supply.

3.Next reconnect both high voltage leads to their

respective terminals inside the power supply and
disconnect them at the ionizing-collecting cell(s).
Support them away from any point of contact and
energize the power supply.

a. If either high voltage lead is defective the light will

indicate the trouble. Each lead may then be ch ecked

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separately by disconnecting them , one at a time, f rom
their respective ter minals at the power suppl y. When
a lead is found to be defective, replace it in its
entirety. Do not repair or splice.

b. If the light glows steady with the leads disc onnected

at the ionizing-collecting cell(s) the trouble is then
indicated to be in the ionizing-c ollec t ing cel l(s ) .

The trouble can then be isolated to a single cell, or the
ionizing or collector section of a given cell as follows:

(1) First determine if the short is in the ionizing

section or the collecting section by connecting
each high voltage lead to its respective section,
one at a time, and energizing the power pack.
(The lead not connected must be supported
away from any point of contact.) The short
symptoms will still exist for the section in which
the short is located. If the trouble causing the
short is bridging both secti ons, then the s hort will
be indicated in both sections when they are
individually connected.

(2) W hen the short is isolated to a ce ll tier, remove

all the cells within the tier and visually check the
sections indicated to contain the short.
(a). If the short is in the ionize r secti on, look for a

broken or defective insulator.

(b). If the short is in the collector sec tion, look for

a large piece of foreign material bridging the
collector plates or a defective insulator.
(c). If the short is indicated to be in both sections,

it will probably be a foreign object bridging the air

gap between the ionizer and the collector.

c. Open Circuits

Although open circuits can occur in the secondary they
usually take place in the primary. If the unit contains
only one power supply and the indicating light does not
glow the outage is probably one of the following.
(1) Supply line power to the control disconnected.
Reconnect.
(2) Open access door interlock in control of electronic
air cleaner. Be sure all access doors are properly closed
and secured.
(3) Blown in-line fuse- Replace Power Supply.
(4) Outage in the power supply. Look for charred or
burned components or a loose wiring connection.
Replace power supply or reconnect wiring.
(5) Defective indicating light. Replace light.

d. Malfunctions other than short or open circuits. Refer

to troubleshooting reference chart in this section.

7. Spare Parts

Recommended spare part qu antities are usually based
on the unit size and th e amount of units per installat ion.
For specific rec ommendations, cons ult the Tr ion factor y
or nearest Sales Off ice. Consid eration, ho wever, s hould
be given to stocking the following components;

DESCRIPTION QTY.
PWM Power Supply 2
Cell Insulators 6
LED 2

Part Numbers are not listed as they are subject to
change. Always state Unit Model and Serial Numbers
when ordering parts.

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