UAS SMOG-HOG PSH User manual

OWNER’S MANUAL
SMOG-HOG®ELECTROSTATIC AIR CLEANER
MODEL: PSH

KNOW YOUR EQUIPMENT
READ THIS MANUAL FIRST.
Your Smog-Hog® PSH should provide many years of trouble-free service. This manual
will help you understand the operation of your PSH unit. It will also help you understand
how to maintain it in order to achieve top performance. For quick future reference, fill in
the unit 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

i
TABLE OF CONTENTS
Page
SAFETY PRECAUTIONS .........................................................................................v
1. INTRODUCTION...................................................................................................1
1.1 Description of Operation ...........................................................................1
1.2 System Definitions ....................................................................................1
1.3 Unit Nomenclature ....................................................................................1
1.4 Description of Components.......................................................................5
1.4.1 Power Packs..................................................................................5
1.4.2 Ionizers ..........................................................................................5
1.4.3 Collector Cells ...............................................................................5
1.4.4 Filters.............................................................................................5
1.4.5 Junction Boxes ..............................................................................5
1.4.6 Other Equipment ...........................................................................5
2. INSTALLATION PLANNING .................................................................................5
2.1 Location.....................................................................................................5
2.2 Clearances ................................................................................................5
2.2.1 Component Access .......................................................................5
2.2.2 Electrical Enclosure Access ..........................................................5
2.2.3 Bottom Working Clearance ...........................................................5
2.3 Supports....................................................................................................6
2.3.1 Skidded Systems...........................................................................6
2.3.2 Unskidded Systems.......................................................................6
2.3.3 Utilities/Drains................................................................................6
2.3.4 Ducting ..........................................................................................6
3. INSTALLATION.....................................................................................................6
3.1 Receiving Inspection .................................................................................7
3.2 Unloading by Forklift .................................................................................7
3.3 Unloading by Crane ..................................................................................7
3.4 Unit Storage/Delay to System Installation.................................................8
3.5 Installing the System.................................................................................8
3.5.1 PSH Systems ................................................................................8
3.5.2 Gaskets .........................................................................................8
3.5.3 Inlet.Outlet Plenums ......................................................................8
3.5.4 Motors/Blowers..............................................................................8
3.5.5 Pre-Conditioning Equipment..........................................................8
3.5.6 Order of Installation .......................................................................8
3.5.7 Leveling .........................................................................................9
3.5.8 Blowers with Vibration Isolators ....................................................9
3.5.9 Drain Pipe Connections.................................................................9
3.5.10 Wash Water Supply Connection ..................................................10
3.5.11 Electrical Field Wire Installation ...................................................10

ii
TABLE OF CONTENTS
Page
4. OPERATION ......................................................................................................11
4.1 Start Up Checks.......................................................................................11
4.1.1 Installing Components ....................................................................11
4.1.2 Ducting Connections.......................................................................11
4.1.3 Blower Rotation...............................................................................11
4.1.4 Blower Belt Tension........................................................................11
4.1.5 Blower Current Measurement.........................................................12
4.1.6 Adjustable Motor Variable Pulley....................................................12
4.1.7 Power Pack Operation....................................................................12
4.1.8 Power Pack Enclosure Push Rod and Ground Bar........................13
4.1.9 In-Place Cleaning............................................................................13
4.1.10 Placing PSH On Line....................................................................14
4.1.11 UAS On Site Start Up Visit...........................................................14
5. MAINTENANCE ...................................................................................................14
5.1 Recommended Maintenance ...................................................................14
5.1.1 Check Power Pack Enclosure Indicator Light(s) ............................14
5.1.2 Ionizer and Collector Cell(s) Weekly Visual Inspection ..................14
5.1.3 Filters, Drain Sumps, and Access Door Gasket Inspection............14
5.1.4 Perform An In-Place Cleaning Wash Cycle....................................15
5.1.5 Manually Cleaning System Components........................................15
6. MANUAL CLEANING OF SYSTEM COMPONENT(S)........................................15
6.1 Type of Detergent ....................................................................................15
6.2 Detergent Strength...................................................................................15
6.3 Water Temperature ..................................................................................15
6.4 Agitation/Impingement..............................................................................15
6.5 Cleaning Cycle Duration ..........................................................................15
6.6 Rinse Procedure ......................................................................................15
6.7 Dry-Out Time............................................................................................16
7. MANUAL CLEANING METHODS........................................................................16
7.1 Soak Tank ................................................................................................16
7.2 Portable Pressure Washer.......................................................................16
7.3 Automatic Parts Washer ..........................................................................16
7.4 Other Cleaning Considerations................................................................16
8. APPEARANCE OF COMPONENTS AFTER CLEANING ...................................16
8.1 Ionizer ......................................................................................................16
8.2 Collector Cell............................................................................................16
8.3 Prefilters/Afterfilters..................................................................................16
8.4 Cabinet.....................................................................................................17

iii
TABLE OF CONTENTS
Page
9. PART REPLACEMENT PROCEDURES AND ADJUSTMENTS.........................17
9.1 Ionizer Wire Replacement........................................................................17
9.2 Door Feed Through Insulator Replacement.............................................17
9.3 Indicator Light Replacement ....................................................................17
9.4 Component Access Door Gasket Replacement ......................................17
9.5 Power Pack Enclosure Push Rod Adjustment.........................................18
9.6 Blower Lubrication....................................................................................18
10. TROUBLESHOOTING .......................................................................................18
10.1 Tools Required.........................................................................................19
10.2 Perform Before Troubleshooting..............................................................19
10.3 Troubleshooting Procedure......................................................................19
10.4 Step 1 Checking the Power Pack ............................................................20
10.5 Step 2 Checking the Ionizers and Collector Cells ...................................21
10.6 High Voltage Probe Measurements .........................................................22
10.7 Bench Test Procedure .............................................................................23
10.8 Troubleshooting Guide.............................................................................25
11. ORDERING PARTS...........................................................................................26
11.1 Replacement Parts...................................................................................26
11.2 Returning Parts ........................................................................................26
11.3 Freight Cost..............................................................................................26
12. POWER PACK ENCLOSURE ILLUSTRATION AND PARTS LIST ..................28
13. REPLACEMENT PARTS FOR IONIZER AND COLLECTOR CELL .................30

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v
IMPORTANT SAFETY INSTRUCTIONS
To reduce the risk of fire, electric shock, or injury when using your air cleaner, follow these basic precautions:
SAFETY PRECAUTIONS
We have provided many important safety messages in this manual on your Smog-Hog PSH. Always read and obey
all safety messages.
• Wear protective clothing and safety glasses when handling
collector components or servicing the unit.
• Use proper lifting and rigging equipment to install your
electrostatic precipitator.
• The electrostatic precipitator should be properly grounded
prior to servicing.
• Disconnect power before servicing.
• Replace all access panels before operating.
• Do not operate the unit with component doors open.
• 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.
• Do not collect emissions which are explosive
• Use non flammable cleaners.
• Keep flammable materials and vapors, such as gasoline,
away from unit.
• The unit should be inspected frequently and contaminants
removed to prevent excessive accumulation which may
result in flash-over or fire damage.
• Operate only in a safe and serviceable condition.
• Operating temperature to the air stream should not
exceed 120° F.
!
!DANGER
!WARNING
!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.

vi
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1
Revised 10/09 Smog-Hog
PSH Series Model
THIS MANUAL IS COMPILED FOR GENERAL
INFORMATION AND DOES NOT NECESSARILY
REPRESENT ALL OPTIONS OR ACCESSORIES.
CONTACT UAS CUSTOMER SERVICE
1-800-252-4647 FOR ADDITIONAL INFORMATION
1. INTRODUCTION
You are about to install and operate a SMOG-HOG®
PSH operating on the principle of electrostatic
precipitation. PSH removes submicron, airborne
particulate with high efficiency and at a uniquely low
expenditure of energy. With proper handling and
installation, the PSH becomes a powerful tool in
controlling objectionable emissions from a wide range
of processes. The PSH can vary in options, consisting
of working groups of collection components which may,
in turn, be preceded or followed by complimentary
conditioning equipment. The PSH may take the form of
a simple component cabinet for inclusion in a large air
handling system or may be a self-sufficient air pollution
control package. Since the PSH generally becomes an
integral part of a process exhaust network, installation
should be carefully planned, starting with mechanical
layout drawings and electrical wiring diagrams provided
by United Air Specialists, Inc. (UAS). Reading this
manual is important to the successful installation and
operation. The PSH Series has been built to rigid
specifications. As with all precision equipment, the
system requires periodic care and maintenance. This
manual contains instructions for standard maintenance
and manual cleaning of components. If the system is
equipped with In Place Cleaning, there is a separate
owner’s manual. If assistance is required please contact
Customer Service, United Air Specialists, Inc., 4440
Creek Road, Cincinnati, Ohio 45242, 1-800-252-4647.
1.1 Description of Operation
The PSH is a two-stage, Penney-type electrostatic
precipitator used for removal of submicronic
hydrocarbon emissions of smoke and other airborne
contaminants. The two “stages” consist of an ionizing
section and a collecting section. Each ionizing section
consists of a series of (10 mil) wires charged to a
high DC voltage and centered between a like series
of grounded plates. This high voltage differential
generates an intense electrostatic field where airborne
particles are “ionized,” i.e., positive polarity. Each
collecting section consists of a large number of parallel
cell plates, alternately charged at high DC voltage
(the same polarity as the ionizer but about half the
voltage magnitude) and ground potential, thus forming
a magnetic field. Charged particles are simultaneously
repelled by the cell charged plates (smaller dimensional
plates) and attracted to cell ground plates (large
dimensional plates). The result being a highly efficient
removal of charged particulate from the airstream as it
passes through the electrostatic precipitator. The total
current to both the ionizer and collector cell circuits
is below 5 milliamps which is non lethal. Ionizer and
collection cell components are usually preceded and/
or followed by mesh filters to assure even distribution
of air, at low velocity. Air movement is provided by a
system blower located behind the ionizer and collector
cell components that exhausts cleaned air at a specified
cfm rate. More complex systems can include other
conditioning equipment.
1.2 System Definitions
PSH Series is designed for rigorous, often continuous,
smoke and particulate removal duty. The system
includes mechanical pre filters (as applicable), ionizer
and collector cell components, power pack enclosures
and pre/after filters. The PSH has been tested to
operate in accordance with national listing standards
of agencies such as Underwriters’ Laboratories (UL)
and ETL, with local approvals from selected cities as
required. PSH units are designed for installation in
customer ducting where other system components,
including the blower, may be provided by others. PSH
systems can include blowers, skids and other factory-
assembled equipment, which arrives in the field ready
for installation.
1.3 Unit Nomenclature
PSH systems may include various combinations of
features connected in series in the direction of airflow.
The PSH’s configuration code is defined with a series
of letters and numbers. Refer to Figure 1. On “single-
wide”, (the width of one module is a group of two
ionizers and two collector cells in series) the access
doors to collecting components face the operator as
air flows from left to right. Opposite side access right
to left is also available. “Double wide” (the width of
two modules placed side by side) have access doors
on both sides, each door accessing one module, left
to right, and right to left in one system. Air which flows
through one set of ionizer(s) and collector cells will
make a single cleaning “pass.” When an application
dictates, multiple passes can be placed in series in
the direction of airflow. Component identification is
illustrated in Figures 2 and 3.
Figure 1
PSH NOMENCLATURE
Number of Tiers High
(1 through 6)
One Module = Group of 2 Ionizers and 2 Cells
Number of Cells Wide
(2 or 4)
Number of Passes
(1, 2 or 3 Passes in Series)
PSH–64–3

2
Revised 10/09 Smog-Hog
PSH Series Model
Figure 2
PSH Component Identification
Figure 3
PSH System Identification
Prefilter
Ionizer
Collector Cell
Afterfilter
Power Pack Enclosure
Component Door
Electrical Junction Box
Lifting Eye (4 places,
not provided on skidded
systems)
3’’ FPT Drain (1 side,
1 bottom on PSH
12 thru 52; 1 each side,
1 bottom on PSH
24 thru 64)
Lifting Eye
Module Top View
Power Pack Enclosures
Top Electrical
Junction Box
Inlet Plenum
Component Door
Mounting Skid
Model Shown:
PSH-34-2
Pass #1
Pass #2
Outlet Plenum
System Blower
AIRFLOW
* Overall width includes power pack enclosures.
** Overall height includes top electrical junction box.
NAMEITEM
1
2
3
4
5
6
7
8
9
Modules
Wide
1
1
1
1
1
2
2
2
2
2
Weight
(lbs.)
215
365
525
680
840
730
1025
1350
1675
2000
A
26
5
/
8
26
5
/
8
26
5
/
8
26
5
/
8
26
5
/
8
26
5
/
8
26
5
/
8
26
5
/
8
26
5
/
8
26
5
/
8
B*
46
3
/
8
46
3
/
8
46
3
/
8
46
3
/
8
46
3
/
8
87
7
/
8
87
7
/
8
87
7
/
8
87
7
/
8
87
7
/
8
C**
34
13
/
16
58
5
/
8
82
7
/
16
106
1
/
4
130
1
/
16
58
5
/
8
82
7
/
16
106
1
/
4
130
1
/
15
153
7
/
8
D
18
3
/
8
18
3
/
8
18
3
/
8
18
3
/
8
18
3
/
8
18
3
/
8
18
3
/
8
18
3
/
8
18
3
/
8
18
3
/
8
E
37
5
/
8
37
5
/
8
37
5
/
8
37
5
/
8
37
5
/
8
72
5
/
8
72
5
/
8
72
5
/
8
72
5
/
8
72
5
/
8
Units
PSH 12
PSH 22
PSH 32
PSH 42
PSH 52
PSH 24
PSH 34
PSH 44
PSH 54
PSH 64

3
Revised 10/09 Smog-Hog
PSH Series Model
Figure 4
PSH System Components
Indexing Filter
Vee-bank Filter
Inlet Plenum with Baffle Diffusers
Air-to-Air Heat Exchange
Fresh Air Blower
Inlet Plenum
Cooling Coils with Plenum
PSH SYSTEM COMPONENTS
SMOG-HOG® (ESP)
Skid Wash Control Panel Blower Panel
Recirculation Tank
Outlet Plenum
System Blower
SNOG-HOG® with In-Place Cleaning System (Fixed Headers)

4
Revised 10/09 Smog-Hog
PSH Series Model
Figure 5
Ionizer and Collector Cell Contact Spring Arrangement
Ionizer Contact Spring Arrangement
Attach Nut to Screw
on Ionizer Wire Support Bar
Ionizer Standoff Insulator
4 per Assembly
Install Spring to Mate
With Adjacent Ionizer
Install Wire
9 per Assembly
Component
Door
Cell Door
Feed Thru
Insulator
Ionizer Door
Feed Thru
Insulator
Install Spring to Mate With Door
Feed Thru Insulator
Install Wire Tension Spring
18 per Assembly
Ionizer
Ionizer Contact Spring
Ionizer Door Feed Thru Insulator
Ionizer Standoff Insulator
Ionizer Wire
Ionizer Wire Tension Spring
Acorn Nut
Screw
Collector Cell
Cell Contact Spring
Contact Screw with Washer
Triangle Insulator
Cell Door Feed Thru Insulator
NAME
NAME
ITEM
ITEM
1
2
3
4
5
6
7
8
1
2
3
4
5
7 8
4
2
5
3
2
6
Attach Nut to Screw
on Ionizer Wire Support Bar
7 8
Ionizer
1
Install Spring to Mate with Center
Post in Adjacent Cell Triangle Insulator
Install Contact Screw
with Washer on Cell
Triangle Insulator
2
3
Install Spring to Mate with
Cell Door Feed Thru Insulator
2
Cell Door Feed Thru
Insulator
Ionizer Door
Feed Thru
Insulator
Component
Door
GPN Collector Cell
5
1
Cell Triangle
Insulator
8 per Cell
4

5
Revised 10/09 Smog-Hog
PSH Series Model
1.4 Description of Components
1.4.1 POWER PACKS
Each power pack converts 115 volt, single-phase
AC power to high voltage DC for two ionizers and
two collector cells. This combination of components
comprises a working “module”. Standard packs supply
positive DC voltage of 11.0 (nominal) KVDC to two
ionizers and 5.5 KVDC to two collection cells. Power
packs with special ratings are supplied on certain
applications. Power packs are mounted in power pack
enclosures located on the module doors to the PSH.
Each pack has an externally mounted indicator light
that illuminates to indicate normal operation. The PSH
power pack meets UL safety standards. In the event
of a short circuit or overload condition to the output
side, the power pack’s high voltage collapses and the
indicator light is in the flashing mode. Upon removal
of the overload, the power pack automatically returns
to normal and the indicator light will be illuminated.
The power pack is self-protecting against overloads
(e.g. dirty components, short circuits in ionizer and
cell circuits) and is self regulating from AC voltage
variations 90 to 130 VAC.
1.4.2 IONIZER SECTION
Each ionizer supports nine (9) 10 mil tungsten steel
ionizer wires spring mounted and centered between
aluminum ground plates. Refer to Figure 5. When
high DC voltage is applied to the wires, a powerful
field charges contaminated particles. Ionizer standoff
convoluted insulators are part of the ionizer wire
support bar(s) which separates high voltage from the
grounded chassis.
1.4.3 COLLECTOR CELL SECTION
Each collector cell contains a series of parallel plates,
alternately charged and grounded, whose planes
are in-line with the direction of airflow. Refer to
Figure 5. Charged plates are connected electrically
and suspended from four triangular shaped insulators
on each end of the unicell. The ground plates are
independently supported.
1.4.4 FILTERS
Prefilters and afterfilters can take many forms but are
normally of the mechanical type, aluminum metal mesh
and encased in an aluminum frame. Filters provide
even air distribution and collect large particles.
1 . 4 . 5 J U N C T I O N B O X E S
PSH mounted junction boxes are equipped with
terminal strips for 115 VAC single phase power entry.
On factory-assembled systems, three phase field
connection is usually to a single point to a UAS Main
Electrical Panel or a UAS Blower Panel. Refer to UAS
System Layout Drawings and UAS Electrical Drawings
which define the required field installation for each
application.
1.4.6 OTHER EQUIPMENT
The PSH may be supplied with, in-place cleaning, inlet
plenum with baffle filters or aluminum filters, outlet
plenums, skid mounted, insulated enclosure, cooling/
heating coils, and blower. System components may be
shipped skid mounted, or as subassemblies. Planning
is required to understand the scope of the installation,
from handling to assembly to the connection of utilities.
2. INSTALLATION PLANNING
Prior to receipt of equipment, drawings should be
reviewed and plans completed for handling and
installation. Site selection, support structure, utilities,
drains, ductwork and work sequence need to be
coordinated.
UAS Electrical Panels provide the necessary
electrical interlocks and controls for the PSH.
If electrical control panels supplied by others are
not per UAS specifications the PSH is operating
in an UNSAFE mode, voiding the warranty.
The following are general guidelines.
2.1 Location
Systems should be located as near as possible to the
emission source, but with consideration given to utility
proximity and safe maintenance access. Indoor location
is preferred since it eliminates climate associated
problems such as servicing the system, heat traced/
insulated wash water and drain pipes or an insulated
system enclosure.
2.2 Clearances
2.2.1 COMPONENT ACCESS
A clearance of 36” is recommended for maintenance
and component removal/installation to the access
door(s) side, refer to UAS System Layout Drawing for
clearances.
2.2.2 ELECTRICAL ENCLOSURE ACCESS
A minimum of 18” is required from overhead
obstructions to allow access to electrical top boxes.
A side clearance of 48” usually is recommended for
access to electrical panels, refer to NEC for specified
clearance.
2 . 2 . 3 B O T T O M W O R K I N G C L E A R A N C E
Plumbing access should be at least 18” beneath
the unit.
!CAUTION

6
Revised 10/09 Smog-Hog
PSH Series Model
Failure to achieve In Place Cleaning specifications will
result in an ineffective wash cycle, increasing system
maintenance costs. If the PSH is located outside and
there are climate associated problems (32°F or below),
exposed piping wash/drain including solenoid valves
should be heat traced and insulated. Do not heat trace
the solenoid valve coil.
2.3.4 DUCTING
Quality ducting is important system performance.
Sealed connections prevent air and liquid leakage
during operation. Welded duct connections are
required with ducting pitched towards the PSH.
Duct design air velocities are typically 1,500 to 2,500
FPM. Gaskets and sealant, where used, should
be compatible with the material collected and the
temperature of the airstream. Wet airstreams (high
humidity) typically require insulation to prevent
condensation.
3. INSTALLATION
CRUSH AND ELECTROCUTION HAZARD
Use adequate safety measures when lifting and
assembling heavy components. Consult site
safety personnel for recommendations. Location
should be clear of all obstructions, such as
utility lines and building clearances.
2.3 Supports
2.3.1 SKIDDED SYSTEMS
Lifting points for skid mounted PSH systems are
illustrated to the UAS System Layout Drawings
including installation notes. Field structural support
design is the responsibility of the installer. Good design
practice should be followed in allowing adequate
clearance for plumbing, conduit installation, and
maintenance.
2.3.2 UNSKIDDED SYSTEMS
When PSH components are shipped unassembled, care
should be taken to provide adequate bearing support on
the field support structure.
Ducting and accessories attached to the PSH
unit should be independently supported.
2.3.3 UTILITIES/DRAINS
Mechanical, electrical service requirements and system
entry points are clearly marked on the UAS System
Layout Drawing and UAS Electrical Drawings. The PSH
main drain pipe should be have a drain trap. Refer
to Figure 6. When a PSH is equipped with In Place
Cleaning, operating water pressure (working pressure),
flow rates (gpm) and hot water specified are based on
factory testing, refer to UAS System Layout Drawing or
In Place Cleaning Owner’s Manual for specifications.
Figure 6
Drain Trap
CAUTION
!DANGER

7
Revised 10/09 Smog-Hog
PSH Series Model
3.1 Receiving Inspection
The PSH system components are thoroughly checked
and tested at the factory. Although precautions have
been taken to ensure against shipping damage, be sure
to carefully inspect contents upon delivery. Notify your
carrier immediately and enter a claim for any damage
found. Check the material received against shipping
papers for any shortages.
NOTE: Damage to cartons, skids, shrink wrap, etc.,
may indicate that rough handing has caused
internal damage. Careful inspection, including
the opening of all shipping containers, should
precede acceptance of equipment.
Certain items (e.g., detergent containers) may be
drop shipped and/or shipped separately. Be sure to
inspect such items before marking and storing. Open
all cartons. Notify the trucking company and UAS
immediately if cartons or any other shipping list items
are missing. Handling SMOG-HOG skidded systems
and 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 refer to UAS
System Layout Drawing for weights, sizes and notes
detailing responsibilities of the installing contractor.
3.2 Unloading By Forklift
As shown in Figure 7A, the PSH unit, duct transition
or skidded system may be unloaded by use of forklift
trucks. 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 forklift
removal of large components involves using a spreader
bar. Refer to Figure 7B. This guarantees vertical pull
on lifting eyes/lugs on the system or component. When
lifting large components, a spreader bar should be used
for equal, vertical lifting.
3.3 Unloading By Crane
Handling of large, skidded PSH systems is a job for
a competent rigger. Figure 7C is for a typical PSH
unit and Figure 7D illustrates lifting lugs for a skidded
system. Spreader bars should be located over the two
front lugs and the two rear lugs of the system skid, with
a spacer bar between them to assure vertical pull. Lugs
are located to minimize tilting during lift.
When systems are shipped disassembled, certain
sections may be fastened together to minimize
truck space. Remove shipping bolts prior to
handling these components.
Lifting Eyes
(Two Per Side)
Channel For
Fork Lift
SMOG-HOG® Unit
Spreader Bar
Lifting Eye
(Two Per
Unit Side)
Loose Transition
Plenum
Spreader Bar
To Crane
To Crane
Lifting
Lug
Block
Spreader Bar
(One Each End)
Spacer Bar
SECTION A-A
Skid Mounted
System
Lifting Lug
(One Each Corner)
Ground
Wood Cushion
(Width of Unit)
Flat Stock
SIDE VIEW
Structural
||
i
||
Beam
Screw Pin
Anchor Shackle
Precipitator
Mounting Block
Figure 7A Unloading by Forklift
Figure 7B Typical Spreader Bar
Figure 7C Lifting SMOG-HOG® Modular Unit
Figure 7D Lifting Loose Pieces
Figure 7E Suggested Lifting Configuration
CAUTION

8
Revised 10/09 Smog-Hog
PSH Series Model
3.4 Unit Storage or Delay
to System Installation
If PSH 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; cover plumbing
openings with plastic hole plugs.
3. Cover skidded systems with plastic sheeting
and seal with duct tape. Do not use black plastic
sheeting. When removing components from
storage, check gaskets, seals and electrical
components for long term effects of exposure
to moisture and dust before proceeding with
installation.
4. The system exhaust blower should be protected
from the weather. Failure to do so could damage
the motor, bearings, belts, and electrical
components. The following are guidelines.
• Store in an area with no vibration.
• Cover blower with a tarp do not use
a black tarp, which will promote
condensation.
• Remove drive belts.
• Rotate fan wheel monthly
Also consult the blower manufacturer for storage
and start up recommendations.
3.5 Installing The System
Skidded PSH systems arrive from the factory ready for
final plumbing and wiring, with proper planning refer to
Section 2, Installation Planning final installation should
be straightforward. When PSH sub-assemblies are to
be installed on customer’s structure, further instructions
are in order.
3.5.1 PSH SYSTEMS
The majority of skidded systems are shipped with
ionizers, collector cells and filters installed. The
system may be lifted into place without removing the
ionizers, collector cells and filters. However, when job
circumstances and or shipping requirements dictate,
ionizers, collector cells and filters are shipped on a
separate skid. These components should not be in-
stalled until the system is in place. Individual PSH units
should be rigidly mounted, with front-to-back bearing
support in the direction of airflow. Refer to Figure 8.
Clearance for plumbing access should be provided
under each unit, refer to Installation Planning. The PSH
main drain pipe should have a drain trap and multiple
passes require drain connection(s) to be manifolded for
each pass. Structural field installed support channels
should not interfere with proposed plumbing and wiring.
Where the PSH is to be suspended, refer UAS System
Layout Drawing. Do not support ducting, plumbing or
other field hardware from the PSH.
3.5.2 GASKETS
When PSH systems are shipped in sections for field
assembly, required gasketing and mounting hardware
are provided. Care is required in preparing surfaces,
attaching gasketing and in sealing corners to prevent
leaks. Surfaces to be gasketed should be confirmed as
smooth and free of rust and dirt. Gasket corners may be
abutted, but the method shown in Figure 9 is a superior
method. A sealant resistant to process contaminants
and liquids (including cleaning compounds) should be
used where gaskets interface. Note that temperatures
above 250oF exceed the limits of most common gasket
materials. Only materials like viton and teflon have a
proven long-term life.
3.5.3 INLET/OUTLET PLENUMS
As supplied by UAS, transition plenums have all-welded
seams and reinforced flanges to assure tight gasket
sealing. Inlet plenums include diffusers to promote even
air distribution across subsequent system components.
Mounting hole patterns exactly match adjacent
flanges. Sheet metal plenums and ducting should be
made to the same quality standards to ensure system
performance.
3.5.4 MOTOR/BLOWERS
Motor/blower assemblies installed in the field should
be equipped with vibration isolators and adequate
structural support. When supplied by others, the
motor/blower assemblies should meet air volume
specifications to the PSH model; refer to UAS System
Layout Drawing.
3.5.5 PRE-CONDITIONING EQUIPMENT
For the PSH to operate at peak efficiency, certain
pre-conditioning equipment may be required. When
supplied by UAS, this equipment should be installed
per UAS System Layout Drawing and UAS Electrical
Drawings. Incorrect installation of such devices as
cooling coils or other equipment may alter system
performance and void the UAS warranty.
3.5.6 ORDER OF INSTALLATION
When the PSH is shipped in sections refer to the UAS
System Layout Drawing for proper installation.
GASKET
MATERIAL
Buna N
Rubber
Pure EPDM
Buna AP
Silicone
Viton
Teflon
GOOD RESISTANCE
TO
Most mineral oils
and process oils
Most plasticizers
Most plasticizers
mineral oils
Selected oils
Most plasticizers, oils,
solvents
Most plasticizers, oils,
solvents
TEMPERATURE
LIMITS (Fo)
250
250
250
250
500-700
700

9
Revised 10/09 Smog-Hog
PSH Series Model
!WARNING
Figure 10
Spring Type Vibration Insulator
The PSH unit should be secured with appropriate
hardware by the installing contractor.
3.5.7 LEVELING
As base-mounted sections are installed, each section
should be leveled to ensure proper drainage and mutual
alignment. If a unit is not level within 1/8” (front-to-back
and side-to-side), place suitable Shims between unit
and support structure surface. Shims should run the
entire length of the mating surfaces. Skidded systems
should be level to within 1/8” per 4 feet of length and
width.
3.5.8 BLOWERS WITH VIBRATION ISOLATORS
Skid mounted units with blowers are normally shipped
with vibration Isolators between blower and skid. Refer
to Figure 10. These assemblies are shipped with
isolators in a restrained condition, remove shipping
bands.
Figure 8
Modular Cabinet Support
Modular Cabinet
System Support Skid Cabinet
Foot
Mounting Holes
(Four Places Per Cabinet)
Figure 9
Suggested Corner Gasket
Flange Gasket
Caulk Edges
Mounting Holes
3.5.9 DRAIN PIPE CONNECTIONS
The PSH modular cabinet is supplied with drain
connections. (Refer to UAS System Layout Drawing.)
The number of drain connections will depend on the
PSH model. All PSH cabinet drain connections should
be connected to one main drain pipe with a drain
trap and properly sloped to the building drain pipe
connection. Refer to Figure 6. Air passing through
the system is under negative pressure. A drain trap
is required serving as a vacuum break and to assure
proper drainage during system operation. The trap
“height is equal to the system static pressure, plus
three additional inches of water. Cleanout plugs should
be installed to the trap to facilitate cleaning. Drain
pipes should be heat traced and insulated if particulate
tends to solidify at expected ambient temperatures.
This precaution also applies to drain and water pipes
exposed to cold climates.

10
Revised 10/09 Smog-Hog
PSH Series Model
3.5.10 WASH WATER SUPPLY CONNECTIONS
Wash water is required for systems with In-Place
Cleaning, refer to the UAS System Layout and the
In-Place Cleaning Owner’s Manual for installation,
operation and specifications.
3.5.11 ELECTRICAL FIELD INSTALLATION
ELECTRICAL SHOCK HAZARD
When electrical control panels are supplied by
others an electrical interlock should be provided
for the power pack circuit to the Smog-Hog PSH
and the system exhaust blower. This provides
safe operation of the PSH. Do not operate the
power pack circuit with the system exhaust
blower off line. This is an unsafe condition.
All electrical work should be performed by a qualified
electrician in accordance with local electrical codes.
Disconnect electrical power before installing or servicing
electrical components. The PSH is manufactured per
job specifications and UAS specifications, refer to UAS
Electrical Drawings. Dashed lines on UAS Electrical
Drawings identify field wiring requirements and possible
certain recommended equipment not supplied by
UAS. When additional equipment is specified for field
installation, refer to UAS System Layout Drawing and
UAS Electrical Drawings. If the PSH is skid mounted,
interconnection wiring may have been completed at the
factory. Do not mount auxiliary electrical equipment on
or inside UAS equipment unless specifically authorized
by UAS. Such unauthorized action may void the system
warranty. UAS provides solid-state programmable
logic controllers (PLC) on various systems. The PLC
operates on a low (24 VDC/120 VAC voltage and is
susceptible to faults induced by the close proximity to
higher voltage wires. Accordingly, the following should
be observed during electrical installation:
1. Three-phase leads should not be located within
4 inches of the solid-state controller.
2. Care should be exercised when drilling conduit
entry holes to protect PLC and other electrical
components from metal chips and dust. Failure
to comply with these instructions can result in a
fault condition requiring repair or replacement
by authorized service personnel. Costs of such
repair or replacement are the responsibility of the
user/installing contractor.
THE FOLLOWING SECTIONS ARE
FOR THE USE OF TRAINED SERVICE
PERSONNEL ONLY.
The PSH 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.
Hazardous live and moving parts are exposed
during the troubleshooting procedures.
Power pack enclosure(s) service voltage is
120VAC. This can be lethal. Voltage 120 VAC is
present within the power pack enclosure even
though the toggle switch is placed in the off
position.
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 placing the toggle
switch in off position to the power pack enclosure
or refer to Figures 17 and 18. The power pack
total current output is limited to a maximum of
5 milliamps to assure personnel safety.
!WARNING
!WARNING
!WARNING
!CAUTION
!DANGER
!CAUTION

11
Revised 10/09 Smog-Hog
PSH Series Model
4. OPERATION
4.1 Start-up Checks
4.1.1 INSTALLING COMPONENTS
If ionizers, collector cells and filter media were removed
for shipment or installation, refer to Figure 5 for proper
installation and electrical contact alignment. Filter
media is installed as after filters (after the collector
cells) with In-Place Cleaning. Do not install filter
media as pre filters (before the ionizers) with In-Place
Cleaning. This will reduce the effectiveness of the
wash cycle by 50 percent. The filter media is utilized
as pre and after filters if the PSH is not equipped with
In-Place Cleaning. The PSH inlet plenum, if supplied
by UAS, will have baffle filters or aluminum media.
The inlet plenum should be inspected that all baffle
filters or aluminum filters are installed.
4.1.2 DUCTING CONNECTIONS
Blower speeds are factory set by the blower
manufacturer to compensate for static pressure losses
in ducting as specified by others. Starting the blower
before ducting is complete or before debris is removed
can result in motor overload or other system damage.
4 . 1 . 3 B L O W E R R O TA T I O N
For proper airflow, the blower should be operating in
the correct direction. If the blower is operating in the
reverse direction, air will move in the proper direction,
but at significantly reduced rates. To check rotation:
1. Place PSH unit off line.
2. Remove blower housing from the blower to
observe the pulley rotation.
3. Place the PSH unit on line for approximately one
minute.
4. Place PSH unit off line.
5. As the blower pulley slows down, observe the
direction of rotation.
6. Note directional arrow located on the blower
housing.
Extreme care should be exercised when operating
blowers with motor/drive belts exposed. Loose
fitting clothing can easily be drawn into these
moving parts.
7. If blower wheel was not rotating in the correct
direction, disengage main three-phase fused
disconnect switch.
!WARNING
!WARNING
Do not attempt to rewire “live” electrical
connections.
8. Open power panel and reverse any two of the three
wires at the terminal strip (Ll, L2, and L3).
9. Engage the main three phase fused disconnect
switch and place the PSH on line, checking blower
rotation.
4.1.4 BLOWER BELT TENSION
The drive belt tension adjustment is critical within the
first 24 hours of the system exhaust blower operation.
During this 24 hour period, the initial stretch of the
belt occurs which requires a belt tension adjustment.
If this tension adjustment is not completed the belt will
wear prematurely, requiring a replacement. A drive belt
tension gage should be used for adjusting belt tension.
If fan belt tension is improper, set tension by adjusting
the motor slide base. Loosen four bolts holding the
motor to the base and turn the adjustment bolt(s) on
the base. Check with a steel straight edge to make
sure that motor pulley and blower pulley is still aligned.
Tighten motor mounting bolts. Figure 11 illustrates
a typical motor/blower arrangement (motor/blower
configurations will vary).
Figure 11
Typical Motor/Blower Configuration
CAUTION
Improper tension on drive belts will cause
premature failure of belts.

12
Revised 10/09 Smog-Hog
PSH Series Model
4.1.5 BLOWER CURRENT MEASUREMENT
Using an ammeter measure the current amperage of
the blower motor. The measurement should not exceed
the full load ampere (FLA) rating identified on the
blower motor nameplate. If the overload relay is tripping
perform the following: check overload relay for proper
setting per motor FLA, measure blower rpm and design
static pressure to determine that actual conditions are
per blower specifications. Blower rpm can be measured
with a tachometer. Design or total static pressure (TSP)
is the summation in static pressure between the blower
inlet and outlet. This summation is best checked with a
manometer and pitot tube measuring readings from (a)
the exhaust transition near the blower inlet and (b) the
exhaust stack after the blower outlet. If the actual static
pressure is higher than the blower specifications, and or
the blower rpm is higher than the blower specifications,
reduce the blower speed by opening the variable pitch
pulley as described in the next procedure. Blower
specifications or blower curve refers to the established
operating conditions set by the blower manufacturer,
rpm, cfm (air volume), and TSP. A reduction in blower
rpm will decrease the TSP. A new pulley set may be
required to reduce the blower rpm and amperage. The
blower can be supplied either by UAS or by others.
A blower curve can be requested through the blower
manufacturer with the serial number.
4.1.6 ADJUSTING MOTOR VARIABLE PITCH PULLEY
Increasing blower speed (RPM) will increase airflow
(CFM) and current amperage. Refer to Figure 12. To
increase speed, close the variable pitch pulley (from
“normal,” as in Figure 12A, toward “full closed,” as in
Figure 12B). Decreasing blower speed will decrease
airflow (CFM) and current amperage. To decrease
speed, open the variable pitch pulley (from “normal,”
as in Figure 12A, toward “full open,” as in Figure 12C).
To adjust the variable pitch pulley:
1. Loosen motor base nuts, adjust motor slide base
and remove the drive belt.
2. Loosen set screw “A” to clear the drive key
between pulley halves.
3. Remove the key.
4. Adjust pulley in increments of one turn to the
desired setting.
5. Install key and tighten set screw “A.”
6. Install drive belt.
7. Loosen set screw “B.”
8. Align belt centerlines of motor and blower pulleys
using straight edge and square.
9. Set belt tension using a belt tension gage.
Some system exhaust blowers will not have an
adjustable motor pulley.
Improper blower speeds adversely affect system
performance. Contact United Air Specialists
before adjusting motor variable pulley settings
or replacing the pulley.
CAUTION
Figure 12
Adjustable Motor Pulley Settings
4.1.7 POWER PACK OPERATION
The power pack voltage range is 90 to 130 AC, 60 Hz,
supplied by UAS Main Electrical Panel or electrical
panel supplied by others. If the electrical panel is
supplied by others the power pack circuit should be
electrically interlocked with the blower circuit. The PSH
will be operating in an unsafe mode if an electrical
interlock is not installed. The power pack indicator light
on the unit is illuminated when high voltage output is
within specifications. If the indicator light is flashing or
fails to illuminate refer to Section 10 Troubleshooting.