SMOG-HOG
MODEL SH-PP
Owner’s
Manual
KNOW YOUR EQUIPMENT
READ THIS MANUAL FIRST.
IF YOU DO NOT FULLY UNDERSTAND THE INSTRUCTIONS, CONSULT YOUR LOCAL
REPRESENTATIVE BEFORE PROCEEDING WITH INSTALLATION OR OPERATION.
Your SMOG-HOG Air Cleaning System should provide many years of trouble-free service. This
manual will help you understand the operation of your SMOG-HOG Air Cleaning System. It will
also help you understand 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. To expedite your service,
have the following information available when contacting UAS.
UAS ORDER REFERENCE: ______________________________________________________
UNIT MODEL: _________________________________________________________________
UNIT SERIAL NUMBER: ________________________________________________________
HIGH VOLTAGE POWER SUPPLY NUMBER: _______________________________________
SYSTEM ACCESSORIES:
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
INSTALLATION DATE: __________________________________________________________
SMOG-HOG CUSTOMER SERVICE
UNITED AIR SPECIALISTS, INC.
4440 Creek Road
Cincinnati, Ohio 45242
1-800-252-4647
FAX: 513-891-4882
TABLE OF CONTENTS
1.
Page
SAFETY PRECAUTIONS ................................................................................. 1
2.
UNIT NOMENCLATURES ................................................................................ 1
3.
DESCRIPTION AND OPERATION................................................................... 1
3.1 Power Packs ............................................................................................... 2
3.2 Ionizers ....................................................................................................... 2
3.3 Collection Cells ........................................................................................... 2
3.4 Filters .......................................................................................................... 2
3.5 Junction Boxes ........................................................................................... 2
3.6 Other Equipment ........................................................................................ 2
4.
INSTALLATION ................................................................................................. 2
4.1 Inspection of Equipment ............................................................................. 2
4.2 Storage ....................................................................................................... 2
4.3 Installation Planning ................................................................................... 3
4.4 Installation .................................................................................................. 3
5.
OPERATION ..................................................................................................... 4
5.1 Pre-Start-up Checks ................................................................................... 4
5.2 Start-up ....................................................................................................... 5
6.
MAINTENANCE AND MANUAL CLEANING ................................................... 5
6.1 Routine Maintenance.................................................................................. 5
6.2 Manual Cleaning of SMOG-HOG Components .......................................... 5
6.3 Manual Cleaning Methods .......................................................................... 6
6.4 When Are Components Clean .................................................................... 7
7.
TROUBLESHOOTING...................................................................................... 7
7.1 Tools Required ............................................................................................ 7
7.2 Checkout Before Testing ............................................................................. 8
7.3 Troubleshooting Procedures ....................................................................... 8
7.4 Power Pack/AC Voltage Checks ................................................................. 8
7.5 DC High Voltage Checks Without Utilizing A High Voltage Probe .............. 8
7.6 Measuring for High Voltage (DC Only) ....................................................... 9
7.7 Checking Ionizers ....................................................................................... 9
7.8 Checking Collection Cells ........................................................................... 9
7.9 Indicator Lamp ............................................................................................ 9
8.
BENCH TEST PROCEDURE ......................................................................... 11
9.
STANDARD PART REPLACEMENT PROCEDURES .................................... 12
9.1 Ionizer Wires ............................................................................................. 12
9.2 Door Feed-Through Insulator ................................................................... 12
9.3 Door Gasket ............................................................................................. 12
9.4 Replacement Parts List/Recommended Spare Parts ............................... 13
10.
ORDERING PARTS ........................................................................................ 14
10.1 Replacement Parts ................................................................................. 14
10.2 Returning Parts ...................................................................................... 14
10.3 Freight Cost ............................................................................................ 14
11.
FIGURES........................................................................................................ 15
1. SAFETY PRECAUTIONS
This manual contains important safety information and
precautionary measures. It is impossible to list all
potential hazards associated with the SMOG-HOG Air
Cleaning System in each application. Proper use of the
equipment must be discussed with United Air
Specialists, Inc. (UAS) or your local SMOG-HOG®
representative. Operating personnel must be aware of,
and adhere to, the most stringent safety procedures.
•
The SMOG-HOG® must not be used in explosive
atmospheres.
•
The SMOG-HOG® must not be used to collect
emissions that are explosive.
•
The SMOG-HOG® must not be used to collect
emissions with a temperature higher than 120°F
without approval from UAS.
•
The SMOG-HOG® must not be used to collect
emissions with a water to oil ratio greater than 50:1
without consulting with UAS.
Application
•
•
The SMOG-HOG® is suitable exclusively for
particulate emission filtration only. Any other or
additional use is considered improper. Improper use
may cause damage to equipment or injury to
personnel.
UAS will not accept liability for any damage resulting
from such improper use. Risks are carried solely by
the user.
®
The SMOG-HOG is not suitable for filtration of
gasses.
Operation
•
The SMOG-HOG® is only to be operated in a safe
and serviceable condition.
•
The SMOG-HOG® must be shut down immediately
in the event of a defect. Faults must be rectified at
once.
•
Do not operate the SMOG-HOG® with either the fan
and motor compartment door or the collection
component door open.
Maintenance
•
The SMOG-HOG® must be switched off and
isolated from the power source when carrying out
maintenance and repair work.
Model SH-PP Owner’s Manual
Only suitable qualified personnel are to work on the
electrical systems.
•
Exercise great care when handling the SMOG-HOG®
collection components, wear protective clothing and
safety glasses.
•
Comply with local and national codes when
disposing of pollutants collected on the collection
components.
2. UNIT NOMENCLATURE
General
•
•
SMOG-HOG® Air Cleaning Systems can include various
combinations of plenums and conditioning devices
connected in series in the direction of airflow. The
SMOG-HOG® unit configuration is clearly defined on
documents and nameplates, refer to Figure 1.
SMOG-HOG® units consist of “modules,” each module
acting as one electrical entity. Modular units designated
as “single-wide” (one module wide) have access doors
to collection components located such that, when
viewing the door, air passes from left to right. Opposite
side access is available, when viewing the door, air
passes from right to left specified, air passing from right
to left. “Double-wide” (two modules wide) units have
access doors on both sides. When an application
dictates, multiple SMOG-HOG® units may be placed in
series in the direction of airflow, which could be a twopass or three-pass SMOG-HOG® Air Cleaning System.
The nominal airflow rating of one ionizer and one
collector cell is 1,000 to 1,500 CFM.
3. DESCRIPTION AND OPERATION
The SMOG-HOG® Air Cleaning System is a two-stage,
Penney-type precipitator used for removal of submicron
hydrocarbon emissions and other airborne contaminants.
The two “stages” consist of an ionizer and a collector cell.
Each ionizer consists of a series of 15 mil tungsten steel
wires, charged to a high DC voltage and centered
between a like series of grounded plates. Airborne
particles are charged positively through the ionizer’s
intense electrostatic field.
Each collector cell consists of a large number of parallel
plates, alternately charged with high DC voltage (the
same polarity as the ionizer but about half its voltage)
forming a magnetic field. Charged particles are
simultaneously attracted to ground plates which are
repelled by charged plates, the result being a highly
efficient removal of charged particulate.
The ionizers and collector cells are preceded and/or
followed by filter media to assure even distribution of air,
at low velocity, through the collection components. Air
1
movement is provided by a system blower, located
behind the ionizers and collector cells which exhausts
clean air at a specified rate.
3.1 Power Packs
Each power pack converts 75 watts of 115 volt, singlephase AC power to high voltage DC for the ionizers and
collection cells. This combination of components is
called a working module.
Standard power packs supply positive DC voltage of
approximately 11 KVDC to the ionizer circuit and 5.5 to
7.3 KVDC to the collection cell.
Power packs are mounted in electrical enclosures on
the component access door. Each power pack supplies
power to a discrete module of components. Each has a
dedicated externally mounted indicator lamp and
illuminates to indicate normal operation.
The maximum total current in the power pack’s high
voltage DC output circuit is 5 milliamperes, rated by UL
as safe for operating personnel. In the event of a short
circuit or overload condition on its output side, the power
pack deactivates and the indicator lamp will not
illuminate. Upon removal of the overload, voltage
automatically returns to normal and the indicator lamp
will illuminate. The power pack is self-protecting against
overloads (e.g., dirty components, short circuits in
ionizer and cell circuits).
When 115 VAC power is removed from the power pack
circuit, an internal resistor bleeds off residual charge
from the ionizer and cell sections. As a precaution,
however, when the component access door is opened,
the blade of an insulated screwdriver should be used to
ground components prior to handling.
!
C AU T I O N
Risk of electrical shock. A residual DC voltage will
remain on high voltage components for a short time
after power is removed. Prior to handling, ground
components using an insulated screwdriver, refer to
Figures 2 and 3.
3.2
Ionizers
Each ionizer supports nine (9) 15 mil diameter tungsten
steel wires. These wires are spring mounted and exactly
centered between aluminum ground plates. When high
DC voltage is applied to the wires, a powerful field
charges contaminant particles. Special convoluted
insulators separate high voltage from grounded
members.
3.3 Collection Cells
Each cell contains a series of parallel plates, alternately
charged and grounded, whose plates are in-line with the
direction of airflow. Charged plates are connected
electrically and suspended from four (4) triangular
shaped insulators on each end plate of the cell.
3.4 Filters
Prefilters and afterfilters promote even air distribution
across the ionizers and the collector cells. Prefilters trap
large particulate as it enters the system while afterfilters
keep agglomerated dry material from being re-entrained
as cleaned air exits the precipitator. Filters can take
many forms but normally are of the mechanical type,
aluminum metal mesh, encased in an aluminum frame.
3.5 Junction Boxes
Top mounted junction boxes are equipped with terminal
strips for 115 VAC single-phase power entry. UAS layout
drawings and UAS wiring diagrams define the exact
nature of required field connections.
3.6 Other Equipment
SMOG-HOG® Air Cleaning Systems may be supplied
with an assortment of special-purpose devices such as
plenums and filters. System components may be
shipped skid mounted or as subassemblies. To be sure
that the system and all of its components perform to
specification, care must be taken to understand the
scope of the installation task - from handling to
assembly.
4. INSTALLATION
4.1 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 internal damage. Notify your delivery
carrier and enter a claim if any damage is found.
4.2 Storage
If system installation is delayed for an extended period
(one month or more), protect system components as
follows:
1. Store in a cool, dry location. Do not disassemble. Do
not remove components.
2. Cover duct and unit openings with plastic sheeting
and duct tape, plumbing openings with plastic hole
plugs.
3. Cover system with plastic sheeting and seal with
duct tape.
2
Model SH-PP Owner’s Manual
When removing system components from storage,
check gaskets, seals and electrical components for
long-term effects of exposure to moisture and dust
before proceeding with installation.
4.3 Installation Planning
Drawings should be reviewed and plans completed for
handling and installing the SMOG-HOG® Air Cleaning
System. Location, support, structure ductwork and work
sequence should be identified to assure an orderly
installation.
Location
System should be located for safe maintenance access.
Locating the system indoors eliminates the climate
associated problems when maintenance is required.
Clearances
Component Access Door. A clearance of 36 inches is
recommended for door opening, allowing for removal/
installation of the ionizers, collector cells and filters.
Electrical Enclosure Access. A minimum of 24 inches
is required from overhead obstructions to allow access
to electrical top boxes. At least 36 inches of side
clearance allows reasonable access to power and
control panels.
Bottom Working Clearance. Plumbing access beneath
the unit should be at least 24 inches.
Supports
The SMOG-HOG® Air Cleaning Systems can be
supported with factory channel support (optional) or
without factory channel support. Typically, lifting points
are identified on the system layout drawings, including
pertinent installation notes. These system support points
serve to facilitate handling by the user or the designated
installing contractor. Field structural support design is
the responsibility of the installer to provide adequate
bearing support. SMOG-HOG® Air Cleaning Systems
are not designed from hanging support from the top of
the unit.
Utilities/Drains
Mechanical and electrical service requirements are
clearly indicated on the system layout drawing. The
drain pipes from the SMOG-HOG® Air Cleaning System
should be equipped with a drain trap, refer to Figure 4.
Ductwork
Quality ductwork is important to optimum system
performance and to the integrity of the entire installation.
Sealed connections prevent air and liquid leakage
Model SH-PP Owner’s Manual
during operation. Systems handling oily emissions
should have all-welded seams, with ductwork pitched to
proper collection points, usually toward the SMOGHOG® itself. Duct velocities should generally be within
1500 to 2500 FPM. Gaskets and sealant must be
compatible with the material collected and the
temperature of the airstream.
!
C AU T I O N
Ductwork and accessories attached to the SMOGHOG® System must be independently supported.
4.4
Installation
SMOG-HOG® Air Cleaning System subassemblies are
usually shipped to the job site on flatbed trailers. Most
can be handled by forklift truck, but final placement may
require a crane. See system layout drawing for weights,
sizes and notes detailing responsibilities of the installer.
Unloading By Forklift. A SMOG-HOG® Air Cleaning
System may be unloaded by use of forklift trucks, refer
to Figure 5. Extreme caution should be exercised to
guarantee that the load is lifted at its center of gravity.
When placing the unit on the ground, blocks should be
located under the component exactly where placed
during shipment.
The preferred method of lifting large components is the
use of a spreader bar, refer to Figure 6, 7 and 8 to
guarantee vertical pull on lifting eyes/lugs on the system
component. SMOG-HOG® Air Cleaning Systems over
two tiers high should not be handled by forklift.
Unloading By Crane. Handling of larger SMOG-HOG®
Air Cleaning Systems is a job for a competent rigger.
Spreader bars should be located over the lifting lugs.
!
C AU T I O N
When systems are shipped disassembled, certain
sections may be fastened together to minimize truck
space. Remove shipping bolts prior to handling these
components.
SMOG-HOG® Air Cleaning Systems are factory
prewired. With proper planning, refer to Installation
Planning, final installation should be straight forward.
The SMOG-HOG® subassemblies (multiple passes if so
required) should be rigidly supported with required
clearances, refer to Installation Planning.
Larger SMOG-HOG® subassemblies may be shipped
horizontally with the ionizers, collector cells and filter
media shipped on a separate skid. Do not install these
components until the SMOG-HOG® Air Cleaning System
is installed.
3
Order of Installation. When SMOG-HOG® Air Cleaning
Systems are shipped as subassemblies, the side of
each transition is identified with an airflow arrow. When
installed correctly, all airflow arrows point toward the
outlet of the system.
Leveling. Systems should be level. If a system is not
level (front-to-back and side-to-side), place suitable
shims between the system and support surface. Shims
should be the entire length of the surface.
Gaskets. Gasketing or sealant is required at the field
flange connections. Care is required in preparing
surfaces, attaching gasketing and in sealing corners to
prevent leaks. Surfaces to be gasketed should be
smooth and free of rust and dirt. Gaskets corners may
be abutted, but the method shown in Figure 9 is a
superior method.
Inlet/Outlet Plenums (optional). Factory transition
plenums have all-welded seams and reinforced flanges
to assure tight gasket sealing. Inlet plenums include
diffusers to guarantee even air distribution to the system
components. Mounting hole patterns exactly match
adjacent flanges. Sheet metal plenums and ductwork
supplied by others should be made to the same quality
standards to assure system performance.
Drains. Air passing through the system is under
negative pressure. A drain trap must be installed to
serve as a vacuum break and to assure proper drainage
of the system during operation. The minimum trap “loop”
height is equal to the system static pressure in inches of
water plus 3 additional inches, refer to Figure 4.
Cleanout plugs should be installed in the trap to
facilitate cleaning. Drain materials may be cooper or iron
(if collected materials permit). Multiple SMOG-HOG®
drains may be routed to a single transport pipe. Drain
pipes that are exposed to outside ambient conditions
will require heat tracing/insulation.
Electrical Connection
!
NOTICE
Electrical installation/connections should only be
made by qualified personnel and be in accordance
with local and national regulations.
All field wire terminations will be completed to a top or
side electrical junction box(es). System drawings will
identify field wiring requirements as illustrated with
dashed lines, including, if so required, electrical
components not supplied by UAS, refer to Figure 15
for a typical wiring diagram.
4
5. OPERATION
!
C AU T I O N
Risk of electrical shock. A residual DC voltage will
remain on high voltage components for a short time
after power is removed. Prior to handling, ground
components using an insulated screwdriver, refer to
Figures 2 and 3.
5.1 Pre-Start-up Checks
Loose Fittings. SMOG-HOG® systems pass rigid
inspection before shipment. However, vibrations during
transit and installation may have loosened certain bolts,
nuts or other attaching devices. Check and tighten as
required.
Installing Components. If ionizers and collection cells
were removed for shipment or installation, refer to
Figure 10 for proper installation and electrical contact
alignment.
Ductwork Connections. Blower speeds (blower
supplied by others) are set to compensate for static
pressure losses in ductwork. Starting the blower before
ductwork is complete or before debris is removed can
result in motor overload or other system damage.
Blower Rotation. (System blower supplied by others.)
For proper airflow, the blower must be operating in the
correct direction. Even if the blower is running
backwards, air will move in the proper direction, but at
significantly reduced rates. Blower rotation will be
identified on the blower housing. If blower rotation is
incorrect, a qualified electrician should pursue switching
two of the three field wiring terminations within the
disconnect electrical enclosure.
!
NOTICE
Electrical changes should only be made by qualified
personnel.
UAS Field Inspection and Operator Orientation. The
SMOG-HOG® system may include field inspection
service. Inspection service will be listed on your order
acknowledgment. If so, contact your UAS representative
as installation nears completion, allowing at least two
weeks for scheduling of personnel. UAS Field Service will
fax a checklist to confirm that the system and process
are ready for operation. Field inspection service includes
a review of all electrical and mechanical connections,
including operational checks on all UAS-supplied
equipment. After actual inspection and confirmation that
the system is operating to specifications, the UAS
technician reviews system operation with maintenance
and operations personnel.
Model SH-PP Owner’s Manual
UAS technicians are available for system service at a
daily rate plus travel and expenses.
5.2 Start-Up
Depending upon specifications (by others), the SMOGHOG® system may be electrically interlocked placing the
SMOG-HOG® system on-line automatically or by a push
button. At start-up, all indicator lamps should illuminate
to the power pack enclosures. If an indicator lamp(s)
fails to illuminate, check that the toggle switch is in the
on position to the power pack enclosure. If indicator
lamp still will not illuminate, refer to Section 7,
Troubleshooting.
6. MAINTENANCE AND MANUAL
CLEANING
THE FOLLOWING SECTIONS ARE FOR THE USE OF
TRAINED PERSONNEL ONLY.
!
C AU T I O N
Hazardous live and moving parts are exposed during
the following procedures. Switch off/isolate the
electrical supply to the SMOG-HOG Air Cleaning
System before servicing.
!
C AU T I O N
Risk of electrical shock. A residual DC voltage will
remain on high voltage components for a short time
after power is removed. Prior to handling, ground
components using an insulated screwdriver, refer to
Figures 2 and 3.
!
NOTICE
Cleaning and servicing should only be done by
qualified and trained personnel.
Some collected contaminants may be hazardous.
Consult factory or local safety personnel before
servicing unit and for proper disposal of collected
contaminants.
6.1 Routine Maintenance
Once the system is operational, periodic maintenance is
necessary to assure peak performance. Follow a
common sense pattern of observation and log abnormal
conditions. Since systems reflect the process under
control, maintenance patterns will vary accordingly.
System Checklist. The following is a checklist for
maintaining your SMOG-HOG®:
Check Power Pack Indicator Lamps Daily. Blinking,
dim or extinguished indicator lamps indicate abnormal
Model SH-PP Owner’s Manual
functioning of an operating module. If the indicator
lamps seem abnormal, proceed with component check
below and/or refer to Section 7 “Troubleshooting.”
Check Component Appearance Weekly. With all
indicator lamps illuminated, a quick check of a few
modules could show symptoms of a growing problem or
confirm if manual cleaning is required.
To check the condition of the ionizers and collector cells,
place the system off-line. Open the component access
door and ground the ionizer wire support bar and the
collector cell, refer to Figures 2 and 3. Note the
condition of the door feed-through insulators and
cabinet walls. Experience will dictate whether
contaminant buildup seems excessive or not.
Remember, dirty insulators and components cause a
high voltage reduction. Whenever opening a component
access door, clean the door feed-through insulators.
Remove both ionizers from the module, noting the
condition of contact springs (distorted? skewed?),
standoff insulators (dirty?), and ionizer wires (broken?
sagging?). Wires should be taut and centered between
ground plates. Remove both collector cells from the
module, noting the condition of contact springs
(distorted? skewed?), cell plates (dirty? bent?
skewed?), triangular insulators (dirty?).
Ionizer and collector cell cabinet tracks should be free of
contaminant buildup, providing a good ground contact.
Aluminum filters should be clean enough to allow air to
pass through freely. They should be in line with their
frames and not sagging in the direction of airflow.
Sumps should be free of debris and any standing water.
Door flange gasket should be in place and in good
condition.
If, after following these guidelines, the problem is not
apparent, refer to Section 7, Troubleshooting, or place
the toggle switch to the power pack enclosure in the off
position, eliminating undue power pack stress. Note the
condition and schedule troubleshooting.
6.2 Manual Cleaning of SMOG-HOG®
Components
While there are many methods of 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 applications will be alkaline in nature. It is
extremely important that the detergent have a built-in
buffering agent to prevent deterioration to the aluminum.
5
Detergents are available through United Air Specialists
for specific applications and contaminants.
Detergent Strength. Detergent concentration, or
“strength,” in a mixture with water varies with the
application from 1:1 to 5:1 to even 20:1 parts water to
parts detergent, refer to detergent manufacturer’s
directions. More or less detergent may eventually be
required for effective cleaning at reasonable detergent
cost. Typically, 20:1 is recommended as a starting point.
Experimentation is almost always necessary.
!
C AU T I O N
Never mix acid and alkaline detergents for manual
cleaning. Detergent mixing could cause rapid heat
release, gel formation or other undesirable condition.
Water Temperature. Detergents can be up to twice as
effective in hot water, and hot water alone is very
effective in softening built-up residue. Water temperature
should be 140°F to 180°F, not to exceed 190°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 dissolve some of the contaminant, 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 must be allowed for the detergent to
dissolve 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.
Rinse Procedure. Cleaned components must be rinsed
off quickly and thoroughly to remove any remaining
contaminants. Even if the components appear to be
clean, some detergent residue may remain. This should
be removed because the residue may contribute to
voltage bleed-down when the components are placed in
service. Also, even though the detergent is “buffered”
(i.e., treated to prevent deterioration of the aluminum),
prolonged contact with the components could cause
minor corrosion. As with cleaning, hot water should be
used for rinsing.
Dry-Out Time. Collection components should be dry
before the system is placed back into operation. Startup of a wet system causes dead shorts and/or arcing
conditions. Wet ionizers, collector cells and mesh filters
should be placed in a warm room until they are dry.
Techniques such as hand wiping insulators and blowing
dry with compressed air will greatly shorten drying time.
6
Cleaned components may also be dried out by placing
them in the system and placing the system on-line, with
all power pack enclosure toggle switches in the off
position for approximately 30 minutes.
6.3 Manual Cleaning Methods
The manual cleaning method selected for a given
system will depend on the type of contaminant, rate of
deposit, facility limitations such as cleaning time
windows (process down time) and available utilities. Any
one of the following three acceptable cleaning methods
may be included in such a plan.
Hot Detergent Soak Tank. This method involves placing
components 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 collected in a precipitator.
Components 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.
Automatic Parts Washers. Certain commerciallyavailable units combine and automate the features
necessary for effective cleaning, including water
heating, detergent injection, agitation, rinsing and
drying.
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 must be
taken not to expose collection cell plates to close-up
and prolonged blasts of high temperature or high
pressure water. Cell plates deform under continuous
exposure to such conditions.
OTHER CLEANING CONSIDERATIONS
The previous methods address the cleaning of SMOGHOG® components only. The cabinetry should also be
periodically cleaned (e.g., during normal planned
maintenance downtimes) to be certain that the
contaminants do not buildup in the unit sumps, thereby
obstructing drains. Each time manual maintenance is
performed, the door feed-through insulators should be
thoroughly cleaned. Voltage output of the power packs
should also be checked when maintenance is
performed.
UAS and/or your local representative can provide
assistance in choosing the best method for cleaning
SMOG-HOG® components in your application.
Model SH-PP Owner’s Manual
6.4 When Are Components Clean?
After manual cleaning, the ionizers, collector cells and
pre/afterfilters should have a clean, not necessarily
“new,” aluminum appearance. Slight discoloration will not
affect system efficiency. The following is a checklist for
acceptable components:
• Ionizer
1. Aluminum frame and plates are free of contaminant
buildup.
2. Standoff insulators are clean and white (no residual
coating). Cracked or carbon-tracked insulators have
been replaced.
3. Wires and springs are intact and taut, centered
between plates and free of coatings.
4. Contact springs and contact screws are properly
aligned (contact springs not deformed).
5. Bent or broken parts have been repaired or
replaced.
• Collection Cell
1. Aluminum frame is square, plates are parallel and
hot plates are centered between ground plates.
2. Residual particulate has been removed between
plates and at corner supports. Material bridging
across plates has been removed.
3. Triangular insulators are free of contaminant.
Cracked or carbon-tracked triangle insulators have
been replaced.
4. Contact springs and contact screws are properly
aligned (contact springs not deformed).
5. Bent or broken parts have been repaired or
replaced.
• Prefilters/Afterfilters
1. Aluminum media and frame are free of
contaminant.
2. Frame is square and media is intact.
3. Filters are installed with drain holes down and
arrow on their frames pointing in the direction of
airflow.
• Cabinet
1. Door feed-through insulators are clean and white.
2. Door gaskets are clean and intact.
3. Component tracks are free of contaminant (for
component grounding).
4. Module sumps and bottom drains are clear and
free-flowing.
Model SH-PP Owner’s Manual
5. Walls, ceiling and doors are free of heavy buildup.
6. Blower has been checked for heavy buildup,
cleaned if required.
7. TROUBLESHOOTING
THE FOLLOWING SECTIONS ARE FOR THE USE OF
TRAINED PERSONNEL ONLY.
!
C AU T I O N
Hazardous live and moving parts are exposed during
the following procedures. Switch off/isolate the
electrical supply to the SMOG-HOG® Air Cleaning
System before servicing.
!
C AU T I O N
Risk of electrical shock. A residual DC voltage will
remain on high voltage components for a short time
after power is removed. Prior to handling, ground
components using an insulated screwdriver, refer to
Figures 2 and 3.
!
C AU T I O N
When the system is operating, 115 VAC is present in
the power pack enclosure at all times. Disconnect the
SH-PP from the power source and lock out before
servicing.
Before proceeding with troubleshooting, check for
proper electrical alignment of contact springs and
contact screws, refer to Figure 10. Improper electrical
alignment and deformed contact springs can cause
arcing, indicator lamp blinking or dead short condition,
indicator lamp not illuminated.
When a SMOG-HOG® Air Cleaning System is equipped
with component access doors to each side of the
system, the location arrangement of contact springs and
contact screws will be different from side to side. When
ionizers and collection cells are removed from one side
of the unit, those same ionizers and collections cells
should be installed to that side but not necessarily the
same component access door. If ionizer and collection
cells are switched from side to side, improper electrical
alignment will occur decreasing system efficiency.
7.1 Tools Required
• High voltage probe, 0 to 15 KV, to check high voltage
at power pack and to the ionizer and the collector
cells.
• Volt-ohmmeter, to check 115 VAC input voltage and
continuity.
• Screwdriver, 8" or longer, with insulated handle.
7
7.2 Checkout Before Testing
Each component access door acts as an independent
collection system. Operating problems can generally be
traced by reference to the indicator lamp on the power
pack enclosure to each module. When the indicator
lamp is illuminated, AC power is present at the power
pack and high voltage should be available to ionizer and
collector cell components. When the indicator lamp is
dim or flashing, or not illuminated, some abnormal
condition exists and the module is operating below
desired high voltage levels and at reduced efficiency.
(Refer to Figure 11 and Figure 12)
1. Check that the power pack enclosure toggle switch is
in the on position.
2. Check that the two interlock switches are engaging.
a) Power Pack Enclosure
b) Component Access Door
3. Visually inspect:
The following conditions could exist:
a) High voltage wires from the power pack to the
door feed-through insulators (damaged/burnt
appearance).
1. High voltages are below the normal operating range
of the ionizer and/or collector cell circuit (dirty
ionizer/collector cell components?).
b) Both door feed-through insulators (cracked or
carbon tracking and/or dirty).
Operating Range:
Ionizer:
Collector Cell:
10.0 to 11.1 KVDC
5.0 to 7.0 KVDC
2. Ionizers and collector cells are not correctly installed,
refer to Figure 10.
3. Contact springs deformed and/or misaligned.
4. Broken ionizer wires.
5. Bent parts.
6. Cracked and/or carbon track to the insulators (door
feed-through insulator, ionizer standoff insulator,
collector cell triangle insulator).
7. Wet components from manual cleaning.
8. Failed power pack.
9. Failed indicator light.
10. Poor wire connections to the power pack and/or
indicator lamp.
11. Power pack electrical enclosure interlock switch and/
or access door interlock switch (120 VAC to power
pack) is not properly engaged.
12. Disruption of service voltage (120 VAC) to the
SMOG-HOG® power pack circuit.
If there is not an obvious cause for the problem,
proceed with troubleshooting.
7.3 Troubleshooting Procedures
If the power pack indicator lamp is not illuminated, follow
the procedures as outlined in this section, including the
Troubleshooting Guide, Table 1.
8
7.4 Power Pack/AC Voltage Checks
c) Loose 120 VAC wire connections.
4. Check for 115 VAC at the power pack, Terminals 5
and 6, refer to Figures 11 and 12. Be sure to engage
the power pack enclosure and component access
door interlock switches before checking for 115 VAC.
5. Place the power pack enclosure toggle switch in the
off position and disconnect high voltage wires #8 and
#7. Place the toggle switch in the on position and
depress the power pack enclosure interlock switch.
The indicator lamp should illuminate. If not, check
wire terminations to the indicator lamp circuit.
6. Check indicator lamp voltage output, should be
approximately 10.0 VDC.
7. If no problems have been encountered with
Statements 1 through 6, refer to “8. Bench Test
Procedure Testing A Power Pack.” If high voltages
are within the operating range from the Bench Test
Procedure, further inspection is required, refer to
Sections 7.5 to 7.9.
7.5 DC High Voltage Checks Without
Utilizing A High Voltage Probe
(Refer to Figure 10)
1. Ionizer(s) may be shorted to ground. Remove the #8
wire from the power pack (#7 cell wire should be in
place) and depress the power pack enclosure
interlock switch. If the indicator lamp illuminates,
open the component access door and remove the
ionizers. Check ionizers for problems such as broken
ionizer wires, foreign objects across wires, cracked
or dirty insulators, faulty or missing contact springs,
incorrect contact spring alignment, bent parts and
defective door feed-through insulator.
Model SH-PP Owner’s Manual
2. Cell(s) may be shorted. With #8 wire in place,
remove #7 wire from the power pack and depress
the power pack enclosure interlock switch. If the
indicator lamp illuminates, open the component
access door and check the collection cells. Remove
the cells and check for contaminant bridging across
the plates or to the cabinet structure. Check for
proper plate-to-plate clearance, spring contact,
buildup on or tracking across triangular insulators,
bent plates and the condition of door feed-through
insulator.
7.6 Measuring for High Voltage (DC Only)
To correctly check power pack high voltage output, a
high voltage probe with a scale from 0 to 15 KVDC is
necessary, refer to manufacturer’s instructions for proper
usage.
7.7 Check Ionizers (Refer to Figure 10 and 13)
1. Make sure the component access door is closed and
that ionizers and contact springs/contact screws are
in place and correctly connected. Check that the
toggle switch is in the on position.
2. Open the power pack access door and connect the
ground wire of the high voltage probe to any bare
metal grounded surface.
3. Depress power pack enclosure door interlock switch.
7.8 Checking Collection Cells
(Refer to Figure 10 and 13)
1. To measure high voltage to the collection cells, use
same procedure as described above for ionizers,
except at the cell door feed-through insulator.
2. Cell voltage should read 5.0 to 7.0 KVDC with
indicator lamp illuminated.
3. Refer to Section 8, “Bench Testing Procedure For
Checking Collector Cell Components.”
7.9 Indicator Lamp
If satisfactory ionizer/cell voltage is present and the
lamp remains off, the problem can be a defective lamp,
lamp circuit wiring or an internal problem within the
power pack.
The LED indicator lamp located on the power pack
enclosure is polarity sensitive. For proper operation, the
“+” (gold) terminal on the lamp must be connected to
Terminal 9 of the power pack. If the lamp wires are
reversed, the lamp will not light.
Power Pack Indicator Lamp Output with the LED
connected is approximately 10.0 VDC.
Power Pack Indicator Lamp Outlet with a 6V
incandescent lamp is approximately 3.5 to 6.0 VDC.
4. Place tip of probe to the ionizer door feed-through
insulator. Ionizer voltage should read 10.0 to 11.1
KVDC with the indicator lamp illuminated.
5. If the ionizer voltage is low, open component access
door and check for a voltage at the contact washer to
the ionizer door feed-through insulator of 10.0 to
11.1 KVDC. If voltage is still low, refer to “Power
Pack/AC Voltage Check.” If not, the problem is within
the ionizer components, broken wire, bridged or
cracked standoff insulators, refer to Section 8,
“Bench Test Procedure” for checking ionizer
components.
Model SH-PP Owner’s Manual
9
10
Model SH-PP Owner’s Manual
Cannot place system on-line.
System is not cleaning the airstream.
Hissing noise to the ionizer components.
1. Refer to blinking indicator lamp Statements
1 through 8.
2. No 120 VAC to the power pack.
Indicator lamp fails to illuminate.
Loose ionizer support bar.
Bent parts to the ionizer.
Ionizer wires coated with contaminant.
Cracked or dirty insulators.
1. Circuit breaker tripped/fuses failed.
1. Improper component electrical alignment.
2.
3.
4.
5.
1. Loose ionizer wires.
3. Power pack failure.
4. Indicator lamp failure.
1. Excessive contaminant buildup in the ionizer
and/or collector cell components causing
arcing.
2. Improper component electrical alignment.
3. Bent/deformed/warped cell plates.
4. Bent ionizer parts.
5. Deformed ionizer and/or collector cell contact
springs.
6. Cracked and/or carbon tracked insulators;
door feed-through insulators, ionizer standoff
insulators, cell triangle insulator.
7. Broken ionizer wires.
8. Ionizers and collector cell components are wet
after manual cleaning.
CAUSE
Blinking indicator lamp to the power pack
enclosure, continuous clicking/snapping noise.
PROBLEM
TABLE 1 - TROUBLESHOOTING GUIDE
Refer to Figure 10.
Carefully straighten cell plates.
Replace bent parts.
Replace contact springs.
1. Restore power by resetting the circuit
breaker/replacing fuses.
1. Refer to Figure 10.
2. Measure high voltages. Operating Range
Ionizer: 10.0 to 11.1 KVDC. Collector Cell: 5.0
to 7.0 KVDC. Manually clean components if
below the operating range. Replace failed
power packs. For testing, refer to Section 7.4.
1. Check ionizer wire springs and ionizer
wire tautness.
2. Tighten wire support bar.
3. Replace bent parts.
4. Clean ionizer wires.
5. Clean or replace insulator, ionizer standoff
insulators, ionizer/collector cell door feedthrough insulator.
1. Refer to blinking indicator lamp Statements
1 through 8.
2. Check engagement of power pack and
component access door interlock switches.
Check for loose wire terminations, broken wires.
3. Refer to Section 7.4.
4. Refer to Section 7.9.
6. Visually inspect all insulators and replace
failed insulators (carbon track is a blackish
streak embedded into the surface).
7. Replace ionizer wires.
8. Place toggle switch in the off position to each
power pack enclosure and operate the system
exhaust blower until components are dry,
approximately 30 minutes.
2.
3.
4.
5.
1. Isolate problem, refer to Sections 7.5 to 7.8.
SOLUTION
8. BENCH TEST PROCEDURE
THE FOLLOWING IS FOR THE USE OF TRAINED
PERSONNEL ONLY
5. Connect AC cord plug to wall outlet.
6. Measure high voltage with probe, ionizer voltage
should be about 10.0 to 11.1 KVDC.
7. Disconnect AC cord plug from wall outlet.
!
C AU T I O N
Hazardous live and moving parts are exposed during
the following procedures. Switch off/isolate the
electrical supply to the SMOG-HOG® Air Cleaning
System before servicing.
!
C AU T I O N
Risk of electrical shock. A residual DC voltage will
remain on high voltage components for a short time
after power is removed. Prior to handling, ground
components using an insulated screwdriver, refer to
Figures 2 and 3.
This procedure can be utilized to determine an electrical
problem with a power pack or an ionizer/collection cell
before or after manually cleaning.
TOOLS REQUIRED
•
One power pack.
•
Two high voltage wires (or spark plug wire), 6' in
length with test clips at each end of wire.
•
One high voltage probe.
•
One AC cord to activate power pack, 120 VAC, with
ground wire.
HIGH VOLTAGE OPERATING RANGE
Ionizer Section:
10.0 to 11.1 KVDC
Collector Cell Section: 5.0 to 7.0 KVDC
8. Discharge high voltage with a screwdriver with
plastic handle by touching the ionizer wire with the
blade of a screwdriver and contacting screwdriver
shaft to metal frame.
Possible causes for below normal ionizer high voltages:
Ionizers: Dirty components (requires manual cleaning),
bent parts, broken ionizer wires, cracked or carbon track
standoff insulators, deformed contact spring grounding
to an adjacent ionizer, wet ionizer from washing.
TESTING A COLLECTOR CELL
The cell can be tested in the same manner as an ionizer
with the following exceptions:
•
Step 1 – Select one collector cell to be tested.
•
Step 2 – Connect high voltage wire to power pack
connector, identified as “collector” and to cell contact
spring.
•
Step 3 – Connect the other high voltage wire to the
metal frame of the collector cell and to the ground
stud on the power pack.
•
Step 6 – Cell voltage should be 5.0 to 7.0 KVDC.
•
Step 8 – Discharge high voltage by inserting a
screwdriver blade between cell plates.
Possible causes for below normal cell voltages:
TESTING AN IONIZER
Collector Cell: Dirty components (requires manual
cleaning), warped/deformed/bent cell plates, contaminant
bridging between the cell plates, deformed cell contact
spring grounding to an adjacent collector cell, wet
collector cell from washing.
1. Select one ionizer component to be tested.
TESTING A POWER PACK
2. Connect one high voltage wire to ionizer contact
spring and to power pack connector identified as
“ionizer.”
1. Perform Steps 4 and 5.
PROCEDURE (Refer to Figure 12)
3. Connect the other high voltage wire to metal frame
of the ionizer and to the ground stud on the power
pack. This serves as a ground.
4. AC cord should be connected to power pack with
ground wire secured to ground stud on the power
pack.
Model SH-PP Owner’s Manual
2. Measure high voltage with probe.
Ionizer Operating Range:
10.0 to 11.1 KVDC
Collector Cell Operating Range: 5.0 to 7.0 KVDC
3. Replace power pack if high voltages are below the
operating range.
11
9. STANDARD PART REPLACEMENT
PROCEDURES
9.1 Ionizer Wires (See Figure 14)
1. Remove damaged wire from each spring.
2. Replace spring if damaged or missing.
3. Loop one end of new wire over bottom spring. Pull
top spring down with pliers and loop end of wire over
spring.
4. Release spring gently. Wire should now be taut and
centered.
NOTE: IF REPLACEMENT WIRES ARE NOT
AVAILABLE, REMOVE BROKEN WIRES AND/
OR SPRINGS FROM THE ASSEMBLY UNTIL
PARTS ARE AVAILABLE. OPERATION WITH
MISSING IONIZER WIRES WILL RESULT IN
REDUCED OPERATING EFFICIENCY.
9.3 Component Access Door Gasket
1. Remove existing door gasket making sure to remove
all contaminant residue.
2. Trim one edge of the new door gasket neatly and
evenly.
3. Measure and cut gasket to approximate length
required, allowing surplus for final trim.
4. Install the trimmed edge at the top center cabinet
door flange. Use a small mallet to tap the gasket on
the four-sided cabinet flange.
5. Check that the door gasket is firmly seated onto the
cabinet door flange. If the door gasket is not firmly
seated, the door gasket may not seal.
9.2 Door Feed-Through Insulator
1. Turn toggle switch to the “off” position.
!
C AU T I O N
When the system is operating, 115 VAC is present in
this enclosure even with the toggle switch in the off
position.
2. Open power pack access door.
3. Remove lead wire by removing both #10-32 hex
nuts.
4. Remove insulator retaining nut.
5. Open component access door and remove defective
insulator.
6. Remove long screw from insulator.
7. Clean RTV sealant from door surface.
8. Install replacement insulator, reversing the above
procedure, making sure to apply a thin coat of
sealant (RTV) to base insulator.
12
Model SH-PP Owner’s Manual
9.4 SH-PP Replacement Parts List
Part Number
Description
* 02-7012-S
* 02-3267
* 03-0558
* 36-0009
* 36-0016
* 02-1303
* 37-0028
Ionizer Assembly, 9 Wire
Ionizer Wires, 15 mil (9 per set)
Springs for Ionizer Wires (18 per set)
Ionizer Contact Spring (short length)
Ionizer Contact Spring (long length)
Contact Nut Assembly
Ionizer Standoff Insulator (convoluted)
* 02-2339-S
* 36-0009
* 30-0387
* 30-0394
* 33-0001
GPN Collector Cell
Cell Contact Spring
Cell Contact Screw
Cell Flat Washer #8
Pre/Afterfilters (Aluminum) 18 x 18-3/8 x 7/8
* 21-1248
03-1497
37-0026
02-0749
20-2748
Power Pack
High Voltage Wire Kit for Ionizer and Collector Cell
Door Feed-Through Insulator
Door Feed-Through Insulator Assembly (includes 37-0026 Insulator)
LED (Green) Indicator Lamp
02-0331
20-0258
20-0260
20-0467
Indicator Lamp Assembly 6V Incandescent Red Lens
Lamp Socket for 02-0331
Lens, Red for 02-0331
Bulb, Incandescent 6V for 02-0331
20-0326
20-0035
20-2907
Toggle Switch - SPST, 125V
Rubber Boot for Toggle Switch
Interlock Switch
42-1530
Component Access Door Gasket (7 ft. required for each access door)
* Recommended Spare Parts (Quantity: 2 of each, with the exception of the power pack which requires only one.)
Model SH-PP Owner’s Manual
13
10. ORDERING PARTS
10.1 Replacement Parts
Replacement parts for ionizers, collection cells and
miscellaneous parts identified in Section 9.4. Other
common replacement parts can be identified on
drawings shipped with the system.
To order UAS parts, contact your local representative or
call/write:
United Air Specialists, Inc.
4440 Creek Road
Cincinnati, Ohio 45242
Tel. 1-800-252-4647
For prompt service, please specify:
1. Unit Model Number (nameplate)
2. Part Number or Part Description (refer to Section 9.4)
10.2 Returning Parts
When returning parts directly to UAS for any reason,
call UAS for a return material authorization number
(RMA). Mark this number prominently on the returned
package to assure prompt handling and service.
10.3 Freight Cost
Freight cost on returned parts must be paid by the
sender. Freight cost on parts shipped from UAS is
prepaid by UAS and added to the cost of the parts.
14
Model SH-PP Owner’s Manual
Number of Ties High
(1 through 6)
Number of Ionizer(s) and
Collector Cells Per Tier
(1 through 8)
SH - PP - 3 4 - 1 - Number of Passes
(1, 2, 3 or 4 Units in Series)
SMOG-HOG Packaged Precipitator
Figure 1. SMOG-HOG Air Cleaning System Nomenclature
Figure 4. Typical Drain Trap Configuration
Figure 2. Grounding the Collection Cell
Figure 5. Unloading A Single Unit
Figure 6. Typical Spreader Bar
Figure 3. Grounding the Ionizer
Model SH-PP Owner’s Manual
15
Figure 7. Lifting SMOG-HOG Modular Unit
Figure 8. Lifting Loose Pieces
Figure 9. Suggested Corner Gasket
16
Model SH-PP Owner’s Manual
Figure 10. Installation of Ionizer & Collector Cell Components
Model SH-PP Owner’s Manual
17
Figure 11. Label, Wiring Diagram - SH-PP
Figure 14. Ionizer Wire Replacement
Figure 12. H.V. Power Supply Input/Output Connections
Figure 15. Wiring Diagram
Figure 13. Ionizer and Cell Voltage Measurement with
Access Door Closed
18
Model SH-PP Owner’s Manual
UNITED AIR SPECIALISTS, INC.
LIMITED WARRANTY
UAS warrants all equipment manufactured and sold by UAS against defective parts and workmanship for one
year from date of shipment to Purchaser, except that commercial or non-industrial air cleaners (other than
engineered systems) are warranted for three years from such date. This warranty is subject to the limitations in
UAS’ standard terms and conditions provided to Purchaser. Any unauthorized repairs or modifications or abnormal use or misuse of equipment will void all warranties. In no case will UAS’ responsibility or warranty
extend to equipment not manufactured by UAS.
THE FOREGOING WARRANTY IS EXCLUSIVE AND IN LIEU OF ALL OTHER WARRANTIES,
WHETHER WRITTEN, ORAL OR IMPLIED, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT.
As Purchasers exclusive remedy for any defects in the equipment, UAS will exchange or repair any defective
parts during the warranty period, provided such parts are returned, prepaid, to UAS’ factory. The obligation of
UAS is limited to furnishing replacement parts F.O.B. UAS’ factory or making repairs at UAS’ factory of any
parts which are determined, upon inspection by UAS, to be defective. UAS is not responsible for labor or
transportation charges for the removal, reshipment or reinstallation of the parts.
IN NO EVENT WILL UAS BE RESPONSIBLE FOR ANY SPECIAL OR CONSEQUENTIAL DAMAGES.
4440 Creek Road • Cincinnati, Ohio 45242
National: (800) 252-4647
Telephone: (513) 891-0400 • Fax: (513) 891-4882
http://www.uasinc.com
An ISO Certified Company
ISO 4.1.11 10/01
Part No. 44-10199-0001