UAS CLARCOR SMOG-HOG MSH Series User manual

Industrial Electrostatic Air Cleaner l SMOG-HOG MSH Model
OWNER'S MANUAL

KNOW YOUR EQUIPMENT
READ THIS MANUAL FIRST.
Your SMOG-HOG®system should provide many years of trouble-free service. This manual
will help you understand the operation of your SMOG-HOG®unit. It will also help you under-
stand how to maintain it in order to achieve top performance. For quick future reference, fill
in the system and filter information in the spaces below. Should you need assistance, call
the United Air Specialists, Inc. customer service number shown below. To expedite your
service, have the following information available when contacting UAS.
UAS ORDER #: ________________________________________________________________
UNIT MODEL #:________________________________________________________________
UNIT SERIAL #:________________________________________________________________
SYSTEM ACCESSORIES:
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
INSTALLATION DATE: __________________________________________________________
UNITED AIR SPECIALISTS, INC. CUSTOMER SERVICE
1-800-252-4647

TABLE OF CONTENTS
Page
SAFETY PRECAUTIONS ......................................................................................... ii
1. IMPORTANT NOTICE.........................................................................................1
2. DESCRIPTION....................................................................................................1
3. INSTALLATION ...................................................................................................1
3.1 Inspection Note .............................................................................................1
3.2 Installation Planning......................................................................................1
3.3 Unit Mounting................................................................................................2
4. START-UP AND OPERATION ............................................................................2
5. MAINTENANCE AND MANUAL CLEANING ......................................................2
5.1 Normal Maintenance.....................................................................................2
5.2 Manual Cleaning of SMOG-HOG Components............................................3
5.3 Manual Cleaning Methods ............................................................................3
5.4 Appearance Of Components After Cleaning.................................................4
5.5 Replacing Damaged Ionizer Wires ...............................................................4
6. TROUBLESHOOTING ........................................................................................4
6.1 Tools Required ..............................................................................................4
6.2 Perform Before Troubleshooting...................................................................4
6.3 Troubleshooting Procedures .........................................................................5
6.4 Troubleshooting Table...................................................................................8
7. REPLACEMENT PARTS.....................................................................................9
7.1 Replacement Parts List.................................................................................9
8. FIGURES .................................................................................................... 10-12
9. WIRING DIAGRAMS................................................................................... 13-19
WARRANTY
ii

ii
SAFETY PRECAUTIONS
We have provided many important safety messages in this manual on the Electronic Air Cleaner. Always read and obey all
safety messages.
• Use two or more people to move and install the
air cleaning system.
• The air cleaner must be properly grounded.
• Disconnect power before servicing.
• Replace all access panels before operating.
• Wear protective clothing and safety glasses when handling
collection components or servicing the air cleaner
• Electrical connections should only be made by qualified
personnel and be in accordance with local and national
codes and regulations.
• Do not use in explosive atmospheres.
• Use nonflammable cleaners.
• Do not collect emissions which are explosive.
• Keep flammable materials and vapors, such as gasoline,
away from air cleaner.
• The unit should be inspected frequently and dirt removed
to prevent excessive accumulation which may result in
flash-over or fire damage.
• The air cleaner should not be used for support of personnel
or material.
• Operate only in a safe and serviceable condition.
!
!DANGER
!WARNING
!CAUTION
CAUTION
This is the safety alert symbol.
This symbol alerts you to potential hazards that can kill or hurt you and others. All safety messages will follow the
safety alert symbol and the word “DANGER”, “WARNING” or “CAUTION”. These words mean:
Indicates a hazardous situation which, if not avoided, will result in death or
serious injury.
Indicates a potentially hazardous situation which, if not avoided, could result
in death or serious injury.
Indicates a potentially hazardous situation which, if not avoided, may result
in minor or moderate injury.
CAUTION used without the safety alert symbol indicates a potentially
hazardous situation which, if not avoided, may result in property damage.
IMPORTANT SAFETY INSTRUCTIONS
To reduce the risk of fire, electric shock, or injury when using the air cleaner, follow these basic precautions:
!WARNING

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Revised 03/15
SMOG-HOG®
Electronic Air Cleaner
1
1. IMPORTANT NOTICE
This manual contains important safety information and
precautionary measures. It is impossible to list all potential
hazards associated with every air cleaning system in
each application. Proper use of the equipment must be
discussed with United Air Specialists, Inc. (UAS) or your local
Representative. Operating personnel must be aware of, and
adhere to, the most stringent safety procedures.
Unit Specifications:
For Indoor Use Only
* Weights are approximate and may not reflect final unit weight
2. DESCRIPTION (See figure 1)
This unit is a self-contained, two-stage, air cleaner designed
to remove dry or oily airborne contaminants from industrial
work areas. Operating on the principle of electrostatic
precipitation, it pulls air past a mist-stop pre-filter, charges and
collects airborne particulate, then exhausts clean air to the
environment.
Mist-stop pre-filters serve the dual purpose of trapping
large particles and diffusing the air stream evenly into the
precipitator components at low, controlled velocity. Air passes
through an ionizing section where nearly all particulate is
charged; then on to a collecting section where charged
particles are repelled from similarly charged plates and drawn
to ground plates. Agglomerated particles separated from
collection plates during unit startup are trapped on an after-
filter, allowing clean air to pass through the system blower at
all times.
The Model MSH may be ducted directly to the contaminant
source or un-ducted to remove particles from the general
environment.
2.1 SYSTEM COMPONENTS
1. Mist Stop Filter
The Mist Stop filter is a pre-filter used to remove large
particulate and aids in diffusing the air entering the ESP
section.
2. High Voltage Power Supply
The power pack contains the necessary components to
convert customer provided input power (see section 1)
to the high-voltage DC required for the ionizer and
collection cell.
To ensure both equipment and personnel safety, the power
supply high voltage output circuit is limited to a maximum
of 5.0mA when using power-pack 21-1216 and 5.6mA when
using power-pack 21-1234.
In the event of a short circuit or other overload condition,
the power supply is designed to cause the high voltage to
collapse. When the voltage collapses, the indicator light
will blink. When the overload is removed, the voltage will
automatically build up to normal and the indicator light will
illuminate. The power supply is self-protecting
against overload.
When the power is removed from the power supply circuit,
an internal resistor bleeds off the residual charge on the
collection cell. As a precaution, when the access door is
opened, the blade of an insulated handle screwdriver
should be used to ground components before removal
(see grounding procedure, figures 5 & 6).
3. Unicell Ionizing & Collection Section
The ionizing section supports thin tungsten wires which carry
a positive charge of approximately 11 KVDC. This section
electrically charges (ionizes) the contaminated particles being
pulled through the unit.
The collection section contains plates alternately charged to
a positive voltage of approximately 5.5 KVDC. This section
collects charged particles passing through the ionizer.
4. Air Mover
The motor/blower pulls in the contaminated air and exhausts
the clean air through the outlet.
3. INSTALLATION
3.1 INSPECTION NOTE
Upon receipt of your unit, check for any shipping damage.
A damaged carton indicates that the equipment may have
received rough handling during shipping that may have
caused possible internal damage. Notify your delivery carrier
and enter a claim if any damage is found.
3.2 INSTALLATION PLANNING
Locating the Unit: Consideration must be given to the
placement of the precipitator to maximize its effectiveness.
When your SMOG-HOG® is used as a ducted source
collector, the enclosure or pickup hood design is important
for adequate capture of contaminants. Model MSH blowers
have limited static pressure capacity. Check with factory for
anticipated duct losses in excess of 0.5 inWC (12.7 mmWC).
CFMCMH lbs kg HP kW V/PH/Hz FLA
MSH-05-H
MSH-05-V
MSH-05-M-H
MSH-05-M-H
MSH-11-H
MSH-11-V
MSH-11-M-H
MSH-11-M-V
1,100 1,870
Electrical Service
0.25 0.2
1.45 1.1
100-120/1/60
3-wire
230/1/60
4-wire
578192
3.5521572
2.3
9.297571
Weight *Blower Size
Model
115 52
Airflow
500 850

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SMOG-HOG®
Electronic Air Cleaner
!CAUTION
The MSH unit should be inspected frequently and
collected contaminant removed from the system
regularly to prevent excessive accumulation
which may result in a flashover or risk of fire.
3.3 UNIT MOUNTING
Carefully remove the unit from the shipping container, again
inspecting for shipping damage. For ease of installation, open
the access door and remove the unicell and filters from the
cabinet.
Units are designed for machine mounting. Units may be
mounted onto any flat surface such as a machine tool cabinet
top or on an angle iron support base using the mounting feet
on the unit. Ensure the structure is adequate to safely support
the full weight of the MSH unit.
Prior to installation, verify you have at least 25˝ (635 mm)
[Horizontal Single-Pass, Vertical Single & Tandem Pass] and
40˝ (1016 mm) [Horizontal Tandem Pass] for door swing and
component access on the door side of the unit. Allow 12˝
(305 mm) clearance from side obstructions to electrical box
where the high voltage power supply is located. Allow 15˝
(381mm) clearance to the blower access panel for service.
Drain Connection: MSH unit is equipped with a 11/2˝ NPT
drain and can be supplied with an optional drain loop
assembly. (See figure 2) (horizontal unit only)
To avoid the risk of electrical shock and proper operation
of the air cleaner when making the power connection make
certain the air cleaner is grounded by connecting a good
earth ground wire to the earth ground point in the electrical
enclosure.
Installation should conform to all national and local codes.
Refer to Section 9 for your appropriate wire diagram and
interconnect. Ensure to take into account all purchased
options. These may include power cord kits, remote on/
off, disconnect, and/or external transformer. Complete the
electrical connections to the unit utilizing the supplied terminal
blocks inside the electrical enclosure.
4. START-UP AND OPERATION
For best results, the unit should be started before the air
becomes contaminated, insuring clean air at all times. The
unit has been thoroughly tested prior to shipment from the
factory; however, there may be some initial arcing of the
components at start-up. The arcing should cease after a few
minutes of operation.
An indicator light on the unit is illuminated during normal
operation of the power pack and unicell. If the light fails to
illuminate when the power is turned on, see “Troubleshooting”
(section 6.4) for further instructions. Periodically, momentary
shorts will occur indicated by the flickering indicator light.
If the light is dim, fails to glow, or continues to flicker, the
components may need cleaning or servicing (see “Cleaning
Instructions”, Section 5.2 and 5.3).
5. MAINTENANCE AND MANUAL
CLEANING
5.1 NORMAL MAINTENANCE
Once the unit is operational, periodic maintenance is
necessary to assure proper performance. Follow a
regular pattern of unit observation and log abnormal
conditions. Since units reflect the process under control,
maintenance patterns will vary accordingly.
CHECK POWER PACK ENCLOSURE INDICATOR
LIGHTS
The MSH should be monitored daily by observing that
the indicator light is illuminated to each power pack
enclosure. Occasional arcing (flashing of an indicator
light) is normal. An established arcing condition or dead
short condition (continuous flashing of an indicator light)
or the indicator light is not illuminated is not normal
should be corrected.
CHECK COMPONENT APPEARANCE WEEKLY
A visual of the unicell could identify problems such
as moderate to extreme contaminant build up to the
unicells even though the indicator lights are illuminated.
This will be helpful in scheduling a manual cleaning of
the components. To check the condition of the unicells,
place the MSH off line. Open the module door and
perform the grounding procedure, refer to Figures 5 and
6, inspect the condition of the unicells, filters, door feed-
thru insulators and interior of the cabinet. Experience
will dictate whether contaminant build-up is excessive.
Contaminant build up will decrease high voltage to the
ionizer and collector cell circuit. When accessing the
module, always clean the two door feed-thru insulators.
The following should be inspected.
Inspect the ionizer section of each unicell, noting
the condition of the contact spring (distorted? bent?
missing?), ionizer standoff insulators (contaminant
build up) and ionizer wires (contaminant build up?
missing?), repair or replace. Ionizer wires should be
taut and centered between ground plates. Ground
plates between each ionizer wire should be straight
and parallel. Inspect the collector cell section of
each unicell, noting the condition of the contact
spring (distorted? bent? missing?), cell plates (bent?
warped?) should be parallel and straight, repair or
replace. Cell hot plates (smaller dimensional plate)
should be centered between ground plates (larger
dimensional plate). Cell plates should not have
contaminant bridging between the cell plates or at
!DANGER
ELECTRICAL SHOCK HAZARD ELECTRICAL
CONNECTIONS SHOULD ONLY
BE MADE BY QUALIFIED PERSONNEL
!DANGER
DO NOT OPERATE THIS EQUIPMENT IN
THE PRESENCE OF COMBUSTIBLE
VAPORS OR GASES

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SMOG-HOG®
Electronic Air Cleaner
support structure corners or the triangular insulators.
Inspect filters, noting the condition (contaminant build
up?, media separation?, bent frames?) should not
have contaminant build up restricting airflow, repair or
replace. Module drain sump should not have moderate
to extreme contaminant build up. Unicell module
support tracks should be free of contaminant build-up
for ground contact. Module and access doors gaskets
should be in-place and in good condition.
5.2 MANUAL CLEANING OF SMOG-HOG
COMPONENTS
There are a number of methods for manual cleaning,
certain key cleaning criteria contribute to the
effectiveness of every method. These include the type
of detergent, detergent strength, water temperature,
agitation/ impingement, duration, rinse procedure and
dry-out time.
TYPE OF DETERGENT
In general, the detergent used on most hydrocarbons
(e.g., oily residues) will be alkaline in nature. It is
extremely important that the detergent have a built-in
buffering agent to reduce aluminum deterioration.
DETERGENT STRENGTH
Detergent concentration in a mixture with water varies
with the application from 1:1 to 20:1 parts water to parts
detergent. For any contaminant condition, the best
course is to use a cleaning solution per the detergent
manufacturer’s directions. More or less detergent
may eventually be required for effective cleaning at
reasonable detergent cost. The recommended factory
detergent concentration is 5% (20:1).
WATER TEMPERATURE
Detergents can be up to twice as effective in hot water.
Hot water alone is very effective in softening built-up
residue. Water temperature should be 140°F to 170°F,
not to exceed 180°F.
AGITATION/IMPINGEMENT
These methods are virtually the same, with
impingement being the most extreme form of agitation.
Any liquid movement over built-up residue will remove
a layer, allowing detergent to work on the next layer. A
reduction in cleaning time duration usually results.
CLEANING CYCLE DURATION
In most cleaning methods, adequate time should be
allowed for the detergent to remove the contaminant
thoroughly. Reaction time will vary depending on
detergent strength, temperature and agitation.
Guidelines for mixing, heating and expected results are
included on specification sheets for most detergents.
!CAUTION
Never mix caustic and alkaline detergents for
manual. Detergent mixing could cause rapid
heat release, gel formation or some other
undesirable condition.
Time is necessary for effective cleaning. Soaking may
seem slower and less effective than high impingement
and/or hot water above 180°F for cleaning action, so
personnel should be forewarned about using excessive
pressure or temperature to shortcut the cleaning
process. High pressure or stream spray cleaning until
plate edges are shiny is not effective. Not only will
penetration to the cell core not occur, but warping and
bending of the plates may result as well. Patience and
thoroughness of cleaning best preserve the integrity of
the components in the long term. Soaking and gentle
rinsing provides for best results.
RINSE PROCEDURE
Cleaned components should be rinsed off quickly and
thoroughly to remove remaining contaminants. Some
detergent residue will remain if rinsing is not performed.
The residue may contribute to voltage bleed-down when
the unicell is placed in operation. Also, even though the
detergent is “buffered” prolonged contact could cause
minor corrosion. Hot water should be used for rinsing.
DRY-OUT TIME
Unicells and filter media should be dry before the MSH
is placed into operation. Startup of a wet system will
cause dead short conditions to the ionizer and collector
cell circuits. Wet unicells and filter media should be
placed in a warm room for drying. Techniques such as
hand wiping insulators and blow drying unicells and
filter media with compressed air will decrease drying
time.
5.3 MANUAL CLEANING METHODS
The manual cleaning method selected will depend
on the type of contaminant, rate of deposit, facility
limitations such as cleaning time windows (process
downtime) and available utilities. All cleaning methods
listed in this section are acceptable.
SOAK TANK
This method involves placing unicells and filter media
in an agitated solution of hot water and detergent and
is the most effective method. With proper detergent
selection, this procedure will quickly remove most
contaminants. Unicells and filter media should not be
placed in highly concentrated detergent solutions or
allowed to soak for extended periods, (e.g., overnight),
especially at elevated temperatures. Extended soaking
(e.g., days) in solvent or detergent solution will
degrade components over time and should be avoided.
PORTABLE PRESSURE WASHER
A self-contained pressure washer with a spray wand
can be an effective cleaning method, providing it is
used with caution. Care should be taken not to expose
the unicells to close-up and prolonged blasts of high
pressure/temperature, causing cell plate deformity,
requiring a replacement set of unicells and filter media.

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SMOG-HOG®
Electronic Air Cleaner
AUTOMATIC PARTS WASHERS
Certain commercially available units combine and
automate the features necessary for effective cleaning,
including water heating, detergent injection, agitation,
rinsing and drying.
OTHER CLEANING CONSIDERATIONS
The previous methods address the cleaning of unicells
and filter media. The MSH cabinet should also be
periodically cleaned (i.e., during normal planned
downtimes) to reduce contaminant build up. High
voltage output of the power packs should also be
checked when manual cleaning is performed.
5.4 APPEARANCE OF COMPONENTS
AFTER CLEANING
Components should have a clean, not necessarily
“new,” aluminum appearance. Moderate discoloration
will not affect unit efficiency. Checklist for acceptable
components.
UNICELL
1. Frame, end plates and cell plates are free of
contaminant build-up (residual contaminant has been
removed between plates and at comer supports).
2. The frame is square, cell plates are parallel and cell hot
plates are centered between ground plates.
3. Ionizer standoff insulators and cell triangular insulators
are cleaned (no residual coating). Cracked or carbon-
tracked insulators have been replaced.
4. Ionizing wires and springs are intact and taut, centered
between plates and free of coatings.
5. Contact springs and contact screws are properly
located, and replace missing contact hardware.
6. Contact springs are not deformed.
7. Bent or broken parts have been repaired or replaced.
PRE-FILTERS/AFTER-FILTERS
1. Aluminum media and frame are free of contaminant.
2. Frame is square and media is intact.
3. Filters are to be installed with drain holes on the bottom.
CABINET
1. Door feed-thru insulators are cleaned and white.
2. Door gaskets are cleaned and intact.
3. Component tracks are free of contaminant build up
(for unicell grounding).
4. Module drain sump is cleaned and free-flowing.
5. Interior is free of extreme contaminant build-up.
6. Blower wheel is free of contaminant build-up.
5.5 REPLACING DAMAGED IONIZER
WIRES
1. Remove the damaged wire from each spring. Also replace
spring if it is damaged.
2. Loop one end of the new wire over the bottom spring, then
extend the top spring and loop the end of the wire over the top
spring. Pliers may aid in this procedure (Refer to Figure 4).
NOTE: In the event that replacement wires are not
immediately available, the ionizer may be left in
service. Remove broken wire(s) and springs from the
assembly. Operation with missing wires will result in
reduced operating efficiency.
6. TROUBLESHOOTING
6.1 TOOLS REQUIRED
Screwdriver: 8 inches or longer with insulated plastic handle.
Volt-Ohm meter: For checking input voltage, low-voltage DC
and continuity (ohms).
High-voltage probe: For checking high-voltage power supply
(range: 0 to 15 KVDC)
Amp probe (or clip-on amp meter): For checking motor
current.
6.2 PERFORM BEFORE
TROUBLESHOOTING
The following should be checked to the module(s)
in which the indicator light(s) is flashing or is not
illuminated. Corrections should be completed and parts
replaced.
• Contact springs in the correct location, Figure 1.
• Unicell components have a moderate to extreme
contaminant build up, manually clean the unicell
components.
• Ionizer wires and tension springs missing or broken,
remove broken wires and springs from the drain sump.
• Ionizer standoff insulators, cell triangular insulators,
and or door feed through insulators display moderate
to extreme contaminant build up, broken or carbon
tracked insulators (imbedded black streak which
cannot be removed by cleaning, replace insulator).
!CAUTION
TROUBLESHOOTING AND SERVICING
PROCEDURES SHOULD BE PERFORMED BY
QUALIFIED PERSONNEL ONLY

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Revised 03/15
SMOG-HOG®
Electronic Air Cleaner
6.3 TROUBLESHOOTING PROCEDURE
CAUTION
HIGH VOLTAGE SPECIFICATIONS:
Ionizer Circuit Operating Range: 10.0 to 11.8 KVDC
Collector Cell Circuit Operating Range: 5.0 to 7.5 KVDC
There will be continuous cell arcing if cell voltages
exceed 7.5 KVDC.
If there is a dead short condition or arcing condition
usually the problem is within the collector cell. The
power pack should be confirmed that the power pack
is operational, start with step (1), before proceeding to
the step (2). In the event of a dead short condition the
power pack is designed to “shut down” the high voltage
to the ionizer and collector cell circuits causing the
indicator light to flash. When the dead short condition is
removed the high voltage output will return to normal.
The indicator light will be illuminated. The power pack is
self protecting from dead short conditions.
All connectors on the power pack are identified with
name and wire number with the exception of the
ground connector (green wire to this connection) Refer
to Figure 7. Step 1 and Step 2 do not require a high
voltage probe.
The ionizer section supports 10 mil tungsten wires
which apply a high voltage positive charge to the
contaminant particles.
The cell section contains plates alternately charged
collecting the charged particles from the ionizer section.
High voltage problems can generally be isolated
by reference to the indicator light. If the indicator
light(s) are illuminated and the unit is moving air
but efficiency is below normal (unicells not dirty,
smoke discharging from the exhaust blower) check
that the contact springs are in the correct locations,
see Figure 1.
!CAUTION
Risk of electrical shock. The high voltage
circuits to the ionizer and collector should be
grounded before removing the power pack, high
voltage wires, door feed through insulators
and unicell(s). The grounding procedure can
be accomplished by waiting one minute after
turning the unit off and referring to Figures 5
and 6. An internal resistor within the power
pack discharges the residual high voltage. The
grounding procedure statement is not identified
within the troubleshooting steps but should be
performed. The power pack total current output
is limited to a maximum of 5 milliamps to assure
personnel safety.
A high voltage probe is required to measure high
voltages to the ionizer and collector circuits to the
unit. As an accessory, a high voltage probe can be
purchased for a multimeter.
STEP 1
PROBLEM: Indicator light is flashing
or not illuminated
PROCEDURE: Checking the power pack
The MSH should be placed "off", open power pack
enclosure lid door, and disconnect both high voltage
wires (Ionizer #8 and Collector #7) from the power
pack. The high voltage wires should carefully be
placed away from the ionizer and collector cell power
pack connectors, eliminating the high voltage wires
from contacting the power pack connectors. Place the
MSH "on"; the indicator light should be illuminated.
If the indicator light is illuminated the power pack is
operational, proceed to step (2). If the indicator light is
flashing (high voltage wires #8 and #7 disconnected
from the power pack), the power pack requires
replacement. If the indicator light is not illuminated
proceed with following until the problem is corrected.
Verify there is 120 VAC to the power pack, place the
MSH "off" and remove the 120 VAC wires from the
power pack terminals 5 and 6. Connect the multimeter
to the two 120 VAC wires and place the MSH "on". If
120 VAC is not present there are problems upstream
from the power pack, refer to wiring diagram.
STEP 2
PROBLEM: Indicator light is flashing.
PROCEDURE: Checking the unicell
components
Do not proceed with step (2) until step (1) is completed.
The following steps are the process of elimination in
identifying the problems to the ionizer/collector cell
circuit.
There are four conditions which could occur with a
flashing indicator light.
1. The high voltages are below specifications to the
ionizer and or the collector cell circuit(s).
2. There is an arcing condition to the ionizer and or
collector cell circuit(s).
3. There is a dead short condition.
4. The power pack has failed. Refer to step 1.
Power pack enclosure(s) service voltage is
120VAC or 230VAC. This can be lethal. Voltage
(120 VAC) or (230 VAC) is present within the
power pack enclosure.
!WARNING

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SMOG-HOG®
Electronic Air Cleaner
(a) Place the MSH "off", and open power pack lid door.
Disconnect high voltage wire #8 to the ionizer connector
with high voltage wire #7 (Collector) connected on the
power pack and place MSH "on". The indicator light
should be illuminated. If so, the cell circuit is operational
proceed to (b). If indicator light is flashing perform the
following:
• Place MSH "off", open component door, and remove
the unicell(s).
• Place MSH "on". The indicator light should be
illuminated. If the indicator light is illuminated the
problem is within the collector cell section. If the
indicator light is flashing the problem is the high
voltage door feed through insulator (dirty, cracked,
carbon tracking) and or the high voltage wire (broken
wire or wire insulation has deteriorated causing a
dead short condition).
Parts should be replaced as required.
Inspect the unicell(s) for the following:
COLLECTOR CELL CONDITIONS
CAUSING FAILURE
• Dirty collector cell(s) (contaminant build up bridging
the cell plates and or on cell triangular insulators)
requiring manual cleaning.
• “Wet” collector cell(s), not properly dried after manual
cleaning, use compressed air to accelerate the drying
time.
• Deformed collector cell contact springs contacting a
“grounded surface”.
• Bent cell plate(s) contacting the opposing cell plate(s).
• Carbon tracking to the cell triangular insulators,
imbedded black streak which cannot be removed by
cleaning (replace insulator.)
• Surface oxidation to unicell component requiring
a replacement.
• Unicell is structurally weak, loose steel rivets,
deterioration to cell plate spacers or paper thin cell
plates due to utilizing the improper detergent.
Parts should be replaced as required, install unicell(s).
Sometimes a flashing indicator light will clear itself
by removing the unicell(s) from the module and then
installing the unicell(s) back into the module.
Place MSH "off"; connect all wires which have been
disconnected and install unicell(s).
(b) Indicator light is illuminated with the high voltage
wire #7 connected to the collector cell connector on the
power pack. Place MSH "off" and connect high voltage
wire #8 to the ionizer connector on the power pack.
Place the MSH "on".
The indicator light should be illuminated? If so, the
unicell(s) are operational. If the indicator light is flashing
perform the following:
• Place MSH "off", open the component door, and
remove unicell(s).
• Place MSH "on". If the indicator light is illuminated the
problem is within the ionizer section. If the indicator
light is flashing the problem is the high voltage door
feed through insulator (dirty, cracked, carbon tracking)
and or the hv wire (broken wire or wire insulation has
deteriorated causing a dead short condition).
Parts should be replaced as required, install unicell(s).
Inspect the unicell(s) for the following:
IONIZER CONDITIONS CAUSING FAILURE
• Dirty ionizer(s) (contaminant build up) requiring
manual cleaning.
• “Wet” ionizer(s), not properly dried after a wash cycle
or manual cleaning procedure, use compressed air to
accelerate the drying time.
• Deformed ionizer contact springs contacting a
“grounded surface.”
• Broken ionizer wires.
• Contaminant build up and or cracked ionizer stand off
insulators.
• Carbon tracking (black streak) to the ionizer stand off
insulators (replace insulator).
• Ionizer wires not “taut” contacting the ground plates.
• Bent ionizer wire support bar contacting a “grounded
surface.”
• Bent ground plates contacting the ionizer wires.
• Surface oxidation to unicell component requiring
a replacement.
• Unicell is structurally weak or has loose rivets.
Parts should be replaced as required.
Sometimes a flashing indicator light will clear itself
by removing the unicell(s) from the module and then
installing the unicell(s) back into the unit.