Generac Power Systems DF7500 User manual

SAVE THIS MANUAL FOR FUTURE REFERENCE
Register your Generac product at:
WWW.GENERAC.COM
1-888-GENERAC
(1-888-436-3722)
Owner’s Manual
For
DF7500 Dust Suppression System
009111
For technical assistance contact:
www.generacmobileproducts.com
Technical Support
1-800-926-9768

ii Owner’s Manual for DF700 Dust Suppression System
Use this page to record important information about your Generac Mobile Product
Record the information found on your unit data label on this
page. See Unit and Serial Number Locations.
Engine and generator serial numbers are located on separate
data plates affixed to the engine and generator respectively.
When contacting a Generac Mobile Products Authorized
Service Dealer (ASD) about parts and service, always supply
the complete model number and serial number of the unit.
Operation and Maintenance: Proper maintenance and care of
the generator ensures a minimum number of problems and
keeps operating expenses at a minimum. It is the operator’s
responsibility to perform all safety checks, to verify that all
maintenance for safe operation is performed promptly, and to
have the equipment checked periodically by an ASD. Normal
maintenance, service and replacement of parts are the
responsibility of the owner/operator and, as such, are not
considered defects in materials or workmanship within the
terms of the warranty. Individual operating habits and usage
may contribute to the need for additional maintenance or
service.
Unit Model Number
Unit Serial Number
Date Purchased
(000393a)
WARNING
CANCER AND REPRODUCTIVE HARM
www.P65Warnings.ca.gov.

Owner’s Manual for DF7500 Dust Suppression System 1
Table of Contents
Section 1: Introduction and Safety
Introduction ..................................................................1
Read This Manual Thoroughly ....................................1
How to Obtain Service .................................................1
Safety Rules .................................................................1
Safety Symbols and Meanings ...................................1
General Hazards ...........................................................2
Electrical Hazards ........................................................2
Service Safety ..............................................................2
Operating Safety .........................................................3
Positioning the Unit .....................................................3
Starting the Unit ...........................................................3
Trailer Hazards .............................................................4
Towing Safety ...............................................................4
Hitch and Coupling ......................................................4
Running Lights ............................................................4
Wheels and Tires .........................................................4
Safe Towing Techniques .............................................4
Reporting Trailer Safety Defects ................................4
Safety and Operating Decals ......................................5
Section 2: General Information
Specifications ...............................................................7
Unit Dimensions ...........................................................8
Component Locations .................................................9
Control Panel ..............................................................10
Control Panel Components and Functions ................10
Unit and Serial Number Locations ...........................10
Connecting Water Supply .........................................11
Connecting Power Supply .........................................11
Using Transport Locks ..............................................12
Disengaging Transport Locks ....................................12
Engaging Transport Locks .........................................12
Towing the Unit .........................................................12
Lifting the Unit ...........................................................13
Tying the Unit Down ..................................................13
Section 3: Operation
Operation and Use Questions ..................................17
Before Starting ...........................................................17
Starting the Unit .........................................................18
Stopping the Unit .......................................................18
Tilting Blower .............................................................19
Rotating Blower .........................................................19
Automatic Oscillation ................................................19
Section 4: Maintenance and
Troubleshooting
Daily Walk-Around Inspection ..................................21
General Maintenance .................................................21
Preparing for Service .................................................21
Inspecting the Unit .....................................................21
Cleaning the Unit .......................................................21
Emptying Water Circuit .............................................22
Cleaning Water Filters ...............................................22
Inlet Filter ...................................................................22
Nozzle Filter ..............................................................22
Nozzle Cleaning .........................................................22
Lubrication .................................................................23
Jack Maintenance ......................................................23
Trailer Wheel Bearings ..............................................23
Wheel Maintenance ....................................................23
General Troubleshooting ..........................................24

2 Owner’s Manual for DF7500 Dust Suppression System
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Owner’s Manual for DF 7500 Dust Suppression System 1
Introduction and Safety
Section 1: Introduction and Safety
Introduction
Thank you for purchasing a Generac Mobile Products LLC
product. This unit has been designed to provide high
performance, efficient operation, and years of use when
ma inta ined prope rly.
The information in this manual is accurate based on
products produced at the time of publication. The manu-
facturer reserves the right to make technical updates,
corrections, and product revisions at any time without
notice.
Read This Manual Thoroughly
If any section of this manual is not understood, contact your
nearest Generac Mobile Products Authorized Service Dealer
(ASD), or contact Generac Mobile Products Technical Service
at 1-800-926-9768 or www.generacmobileproducts.com
with any questions or concerns.
The owner is responsible for proper maintenance and safe
use of the equipment. Comply with regulations the Occu-
pational Safety and Health Administration (OSHA) has
established, or with equivalent standards. Also, verify that
the unit is applied, used, and maintained in accordance with
the manufacturer's instructions and recommendations. Do
nothing that might alter safe application/usage and render
the unit in noncompliance with the aforementioned codes,
standards, laws, and regulations .
Save these instructions for future reference. This manual
contains important instructions for the unit that should be
followed during setup, operation and maintenance of the
unit and battery. ALWAYS supply this manual to any indi-
vidual that will use this machine.
How to Obtain Service
When the unit requires servicing or repairs, contact an
ASD for assistance. Service technicians are factory-
trained and are capable of handling all service needs. For
assistance locating a dealer, go to https://www.gener-
acmobileproducts.com/parts-service/find-service.
When contacting an ASD about parts and service, always
supply the complete model and serial number of the unit
as given on the data decal located on the unit. Record
the model and serial numbers in the spaces provided on
the front cover of this manual.
Safety Rules
The manufacturer cannot anticipate every possible circum-
stance that might involve a hazard. The warnings in this
manual, and on tags and decals affixed to the unit are,
therefore, not all inclusive. If using a procedure, work
method or operating technique that the manufacturer does
not specifically recommend, verify it is safe for others. Also
make sure the procedure, work method or operating tech-
nique utilized does not render the equipment unsafe.
Safety Symbols and Meanings
Throughout this publication, and on tags and decals affixed
to the unit, DANGER, WARNING, CAUTION and NOTE
blocks are used to alert personnel to special instructions
about a particular operation that may be hazardous if
performed incorrectly or carelessly. Observe them care-
fully. Their definitions are as follows:
NOTE: Notes contain additional information important to
a procedure and will be found within the regular text of
this manual.
These safety alerts cannot eliminate the hazards that they
indicate. Common sense and strict compliance with the
special instructions while performing the action or service
are essential to preventing accidents.
(000100a)
WARNING
Consult Manual. Read and understand manual
completely before using product. Failure to
completely understand manual and product
could result in death or serious injury.
(000001)
DANGER
Indicates a hazardous situation which, if not avoided,
will result in death or serious injury.
(000002)
WARNING
Indicates a hazardous situation which, if not avoided,
could result in death or serious injury.
(000003)
CAUTION
Indicates a hazardous situation which, if not avoided,
could result in minor or moderate injury.

2 Owner’s Manual for DF 7500 Dust Suppression System
Introduction and Safety
General Hazards Electrical Hazards
Service Safety
(000107)
WARNING
Hearing Loss. Hearing protection is
recommended when using this machine.
Failure to wear hearing protection could
result in permanant hearing loss.
(000407)
WARNING
Vision loss. Eye protection is required when
operating unit. Failure to wear appropriate eye
protection could result in vision loss or serious
injury.
(000111)
WARNING
Moving Parts. Keep clothing, hair, and
appendages away from moving parts. Failure
to do so could result in death or serious injury.
CAUTION
(000291)
Equipment damage. Do not attempt to start or operate
a unit in need of repair or scheduled maintenance.
Doing so could result in serious injury, death, or
equipment failure or damage.
WARNING
WARNING
Risk of injury. Do not operate or service this machine
if not fully alert. Fatigue can impair the ability to service
this equipment and could result in death or serious
injury. (000215)
(000182a)
WARNING
Equipment damage. Only qualified service personnel may
install, operate, and maintain this equipment. Failure to follow
proper installation requirements could result in death, serious
injury, and equipment or property damage.
CAUTION
(000229)
Equipment or property damage. Do not block air
intake or restrict proper air flow. Doing so could
result in unsafe operation or damage to unit.
(000145)
DANGER
Electrocution. In the event of electrical accident,
immediately shut power OFF. Use non-conductive
implements to free victim from live conductor. Apply
first aid and get medical help. Failure to do so will
result in death or serious injury.
(000104)
DANGER
Electrocution. Water contact with a power
source, if not avoided, will result in death
or serious injury.
(000152)
DANGER
Electrocution. Verify electrical system is
properly grounded before applying power.
Failure to do so will result in death or serious
injury.
(000188)
DANGER
Electrocution. Do not wear jewelry while
working on this equipment. Doing so will
result in death or serious injury.
DANGER
Electrocution. DO NOT use the unit if
electrical cord is cut or worn through. Doing
so will result in death or serious injury.
(000263a)
WARNING
(000586)
Before servicing unit, shut unit down, turn water supply
OFF, and disconnect unit from power source. Failure
to do so could result in death, serious injury, or
equipment damage.

Owner’s Manual for DF 7500 Dust Suppression System 3
Introduction and Safety
Operating Safety
Positioning the Unit
•The area immediately surrounding the unit should
be dry, clean, and free of debris.
•If the unit is equipped with a frame grounding stud,
follow any local, state, and National Electrical Code
(NEC) guidelines when connecting.
Starting the Unit
Lifting Hazards
(000234a)
WARNING
Crushing hazard. Verify unit is properly secured and
on level ground. An unsecured unit can suddenly roll
or move, causing death or serious injury.
WARNING
(000584)
Personal injury. Only use water from controlled, reliable
sources. Uncontrolled water could contain bacteria. Inhaling
mist containing bacteria could result in death, or serious
injury.
WARNING
Personal injury. Keep people and pets away from work
area. Failure to do so could result in death or serious
injury.
(000420)
WARNING
(000585)
Personal injury. Never direct air jet toward people or animals.
Shut unit OFF immediately if people or animals enter the
work area. Failure to do so could result in death or serious
injury.
DANGER
Electrocution. DO NOT use the unit if
electrical cord is cut or worn through. Doing
so will result in death or serious injury.
(000263a)
CAUTION
(000291)
Equipment damage. Do not attempt to start or operate
a unit in need of repair or scheduled maintenance.
Doing so could result in serious injury, death, or
equipment failure or damage.
WARNING
WARNING
Personal injury. Failure to properly connect
lifting cables, chains, or straps could result in
death, serious injury, or property damage.
(000346)
WARNING
Personal Injury. Do not use lifting eye if there are signs
of damage or corrosion. Doing socould result in death,
serious injury, or property damage.
(000433)
WARNING
Personal Injury. Do not use lifting eye other than as
directed. Doing so could result in death, serious injury,
or property damage.
(000434)
WARNING
Personal Injury. Verify all fasteners are properly
tightened prior to lifting unit. Failure to do so could
result in death, serious injury, or property damage.
(000351)

4 Owner’s Manual for DF 7500 Dust Suppression System
Introduction and Safety
Trailer Hazards
IMPORTANT NOTE: See original trailer operating
manual for additional safety information.
Towing Safety
Towing a trailer requires care. Both the trailer and vehicle
must be in good condition and securely fastened to each
other to reduce the possibility of an accident. Some states
require that large trailers be registered and licensed. Con-
tact your local Department of Transportation office to check
on license requirements for your particular unit.
Towing Vehicle
DO NOT exceed the towing vehicle’s gross vehicle weight
rating (GVWR).
Hitch and Coupling
•Verify the hitch and coupling on the towing vehicle
are rated equal to, or greater than, the trailer's
gross vehicle weight rating (GVWR).
•Verify the trailer hitch and the coupling are compat-
ible. Verify the coupling is securely fastened to the
vehicle.
•DO NOT tow trailer using defective parts. Inspect
the hitch and coupling for wear or damage.
•Connect safety chains in a crossing pattern under
the tongue with enough slack to permit turning and
to hold tongue up if trailer comes loose.
•Before towing the trailer, verify that the weight of
the trailer is equal across all tires. On trailers with
adjustable height hitches, adjust the angle of the
trailer tongue to keep the trailer as level as
possible.
Running Lights
Verify directional and brake lights on the trailer are
connected and working properly.
Wheels and Tires
•Inspect trailer tires for wear and proper inflation.
•Verify wheel lug nuts are present and tightened to
the specified torque.
Safe Towing Techniques
•Practice turning, stopping, and backing up in an
area away from heavy traffic prior to transporting
the unit.
•Maximum recommended speed for highway towing
is 45 mph (72 km/h). Recommended off-road tow-
ing speed is 10 mph (16 km/h) or less, depending
on terrain.
•When towing, maintain extra space between vehi-
cles and avoid soft shoulders, curbs, and sudden
lane changes.
Reporting Trailer Safety Defects
If you believe your trailer has a defect which could cause
a crash or could cause injury or death, you should imme-
diately inform the National Highway Traffic Safety Admin-
istration (NHTSA) in addition to notifying Generac Mobile
Products LLC.
If NHTSA receives similar complaints, it may open an
investigation; and if it finds that a safety defect exists in a
group of vehicles, it may order a recall and remedy cam-
paign. However, NHTSA cannot become involved in an
individual problem between you, your GMP ASD, or Gen-
erac Mobile Products LLC.
To contact NHTSA, you may either call the Auto Safety
Hotline toll-free at 1-888-327-4236 (TTY:1-800-424-9153),
go to http://www.safercar.gov; or write to:
Administrator
NHTSA
1200 New Jersey Avenue S.E.
Washington, DC 20590
You can also obtain other information about motor vehicle
safety from http://www.safercar.gov.
WARNING
Personal injury. Trailer must be securely coupled to
the hitch with the chains correctly attached. Uncoupled
or unchained towing could result in death or serious
injury. (000233a)
Personal injury. Do not operate unit during transport.
Doing so could result in death, serious injury, or
property damage.
(000231a)
WARNING
(000234a)
WARNING
Crushing hazard. Verify unit is properly secured and
on level ground. An unsecured unit can suddenly roll
or move, causing death or serious injury.
WARNING
Property or Equipment Damage. Tighten wheel lug
nuts after first 50 miles to factory specifications.
Failure to do so could result in death, serious injury,
property or equipment damage. (000235)

Owner’s Manual for DF 7500 Dust Suppression System 5
Introduction and Safety
Safety and Operating Decals
This unit features numerous safety and operating decals.
These decals provide important operating instructions and
warn of dangers and hazards. The following diagrams
illustrate decal locations and descriptions.
Replace any missing or hard-to-read decals and use care
when washing or cleaning the unit. Decal part numbers
can be found in the parts manual at www.generacmobile-
products.com.
Figure 1-1. Safety Decal Locations
IMPORTANT NOTE: See original trailer operating manual for trailer safety and operating decal information.
Table 1-1. Decal Descriptions
ID Description
1Electric Shock Hazard
2Central Lift Point
3Electric Shock Hazard
4Hand Crush
Hazardous Voltage.
Electric shock may cause serious
injury or death.
Disconnect power before servicing.
Tension Dangeureuse .
Une décharge électrique entraînera
des blessures graves, voire la mort.
Déconnecter le courant avant de
commencer le service.
Voltage Peligroso.
Las descargas eléctricas causan
Desde lesiones graves hasta la muerte.
Desconectar la fuente de poder antes
de hacer servicio
ADVERTENCIA AVERTISSEMENT
WARNING ! !!
1
43
2

6 Owner’s Manual for DF 7500 Dust Suppression System
Introduction and Safety
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Owner’s Manual for DF7500 Dust Suppression System 7
General Information
Section 2: General Information
Specifications
Unit Dimensions
Figure 2-1. Unit Dimensions
Description Units DF7500
Electric Connection A Inlet plug three phase 32
Voltage V 240
Hertz Hz 32
Smallest Generator Required kW 32 three-phase
Fan Power kW 7.5
Pump Power kW 2.2
Water Connection - 1” hose barb
Water Consumption gal/min (L/min) 13.7 (52)
Inlet Pressure psi (bar) 1.45 (.1) - 5.8 (.4)
Inlet Water Filter micron/mesh 180/80
Number of Nozzles 24
Rotation Angle Range degrees 335
Tilt Angle degrees 0-40
Noise Level DB @ 22 ft (7 m) 84
Maximum Horizontal Range (without wind) ft (m) 98-131 (30-40)
Maximum Vertical Range (without wind) ft (m) 52 (16)
Maximum Covered Area acre (m2) 1.13 (4,600)
Weights
Skid Mounted lb (kg) 1,993 (904)
Trailer Mounted lb (kg) 2,373 (1,076)
Dimensions
Skid Mounted L x W x H ft (m) 10.83 (3.30) x 6 (1.83) x 7.15 (2.18)
Trailer Mounted L x W x H ft (m) 102 (31) x 178 (52) x 104 (32)
Specifications are subject to change without notice. Refer to the product specification sheet for complete list.
B
A
C
009031
A6 ft (1.83 m)
B10.83 ft (3.3 m)
C7.15 (2.18)

8 Owner’s Manual for DF7500 Dust Suppression System
General Information
Component Location
Figure 2-2. Component Locations
Control Panel
Figure 2-4. Control Panel
ALifting Eye FRadio Control Receiver
BNozzles GWater Inlet Filter
CWater Flow Control Valves HWater Inlet Connection
DWorking Range Limiter Pins ITransport Safety Locks
EControl Panel JElectrical Socket
009032
A
A
B
A
C
D
E
F
GH
I
J
G
F
E
D
C
B
A
H
J
K
L
N
M
I
Control Panel Components and Functions
AManual Control Switch
BOscillation System Switch
CHour Meter
DWater Pump Switch
EFan Switch
FPhase Controller Error Lamp
GPhase Controller Switch
HInput Switch
IButton Emptying Water Circuit
JBlower Tilting Lever
KFan Motor Protection Circuit Breaker
LWater pump Protection Circuit Breaker
MEmergency Stop Button
NOscillation System Protection Circuit Breaker

Owner’s Manual for DF7500 Dust Suppression System 9
General Information
Transmitter Unit
Figure 2-4. Transmitter Unit
Transmitter Unit Components and Functions
Unit and Serial Number Locations
See Figure 2-5 to locate the unit ID tag (A) and vehicle
identification number (VIN) tag (B). Important information
such as the unit model number, serial number, VIN, and
tire loading information are listed on these tags. Record
the information from these tags in the event the tags are
lost or damaged. This information may be needed when
ordering parts or requesting assistance
Figure 2-5. Unit and Serial Number Locations
Connecting Water Supply
NOTE: DO NOT run unit without sufficient water supply.
Failure to follow water supply requirements will void
warranty.
Water supply must meet the following requirements:
•Water must be greater than 15 gallons per minute
(52 liters per minutes) and no less than 14 psi (1
bar).
•Water supply hose length must not exceed 50 ft
(15.2 m).
•Water temperature must be less than 100°F
(38°C).
•DO NOT siphon standing water for the water
source.
•Use only controlled water from reliable sources.
•DO NOT use a one-way valve, vacuum breaker, or
check valve in any part of the water supply.
G
F
E
D
C
A
H
J
K
B
I
L
AFan ON
BFan OFF
CPump ON
DPump OFF
EOscillation system ON
FOscillation system OFF
GFan and pump ON
HAll devices OFF
ITilting Up
JTilting Down
KMain ON-OFF switch (on back)
LTransmission battery status
B
A
009111
WARNING
(000584)
Personal injury. Only use water from controlled, reliable
sources. Uncontrolled water could contain bacteria. Inhaling
mist containing bacteria could result in death, or serious
injury.

10 Owner’s Manual for DF7500 Dust Suppression System
General Information
1. Run water 30 seconds prior to connection to elimi-
nate debris.
2. See Figure 2-6. Connect a hose to 1” water inlet
(A) and hand-tighten.
Figure 2-6. Water Connection
Connecting Power Supply
IMPORTANT NOTE: Installations must be comply
with national, state, and local codes.
IMPORTANT NOTE: See generator operator’s manual
for proper installation procedure to generator.
1. Install power cable wires (A) to three phase, 240
volt power source.
Figure 2-7. Electrical Connection
2. See Figure 2-10. Verify input switch (B) is in the
OFF position.
3. Verify emergency stop button (C) is in the out
armed position. If the emergency stop button is
engaged, twist the emergency stop button clock-
wise to release.
Figure 2-8. Emergency Stop Button
4. See Figure 3-4 . Connect power cable to socket (D)
Figure 2-9. Electrical Connection
A009111
(000145)
DANGER
Electrocution. In the event of electrical accident,
immediately shut power OFF. Use non-conductive
implements to free victim from live conductor. Apply
first aid and get medical help. Failure to do so will
result in death or serious injury.
(000152)
DANGER
Electrocution. Verify electrical system is
properly grounded before applying power.
Failure to do so will result in death or serious
injury.
(000104)
DANGER
Electrocution. Water contact with a power
source, if not avoided, will result in death
or serious injury.
Electrocution. Turn utility and emergency
power supplies to OFF before connecting
power source and load lines. Failure to do so
will result in death or serious injury. (000116)
DANGER
(000155a)
WARNING
Electric shock. Only a trained and licensed electrician
should perform wiring and connections to unit. Failure
to follow proper installation requirements could result in
death, serious injury, and equipment or property damage.
A
009116
008780
C
B
008950
D

Owner’s Manual for DF7500 Dust Suppression System 11
General Information
Using Transport Locks
See Figure 2-10. Transport locks (A) (B) must be
disengaged prior to operation
IMPORTANT NOTE: Verify transport locks are
engaged prior to transporting the unit.
Disengaging Transport Locks
1. Remove transport locking pin (A) from transport
lock support.
2. Lift transport locking pin (B) to raised position
Engaging Transport Locks
1. Shut off manual oscillation. See Control Panel.
2. Lower blower completely. See Control Panel.
3. See Figure 2-10. Align holes in actuator supports
(A).
4. Insert transport locking pin through holes (A) and
secure with cotter pin.
5. Rotate blower to forward position.
6. Insert transport lock (B) into hole in base.
Figure 2-10. Transport Locks
Towing the Unit (if equipped)
See trailer operator’s manual for proper towing setup and
procedure.
Lifting the Unit
1. Verify equipment being used to lift the unit is in
good condition and has sufficient capacity. For
approximate weights, refer to Specifications.
2. Engage transport locks. See Using Transport
Locks.
3. Remain aware of people and objects around the unit
while preparing, maneuvering, and lifting the unit.
• When lifting the unit, attach any slings, chains, or
hooks directly to the four lifting points (A). The
central lift point is located on top of the enclosure,
connected to a lift structure inside the unit.
• Use fork lift pockets (B) with care. Avoid
approaching unit at an angle as this can damage
the forklift pockets. Verify obstructions are clear of
the forklift tines before lifting.
Figure 2-11. Lifting Points
A
B
008784
WARNING
Personal injury. Failure to properly connect
lifting cables, chains, or straps could result in
death, serious injury, or property damage.
(000346)
WARNING
Personal Injury. Do not use lifting eye if there are signs
of damage or corrosion. Doing socould result in death,
serious injury, or property damage.
(000433)
WARNING
Personal Injury. Do not use lifting eye other than as
directed. Doing so could result in death, serious injury,
or property damage.
(000434)
WARNING
Personal Injury. Verify all fasteners are properly
tightened prior to lifting unit. Failure to do so could
result in death, serious injury, or property damage.
(000351)
008776
A
B
A

12 Owner’s Manual for DF7500 Dust Suppression System
General Information
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Owner’s Manual for DF7500 Dust Suppression System 17
Operation
Section 3: Operation
Operation and Use Questions
Contact your nearest Generac Mobile Products Authorized
Service Dealer (ASD), or contact Generac Mobile Products
Technical Service at 1-800-926-9768 or
www.generacmobileproducts.com with any questions or
concerns about unit operation and maintenance.
Before Starting
1. Place unit on flat ground in a well ventilated area.
2. Place barriers 6 ft (2 m) around unit to prevent
unauthorized personnel from nearing unit.
3. See Figure 3-1. Verify sufficient water supply is
properly connected to water inlet (A). For water
requirements, see Connecting Water Supply.
Figure 3-1. Water Connection
4. Turn on water supply.
5. See Figure 3-4. Open water control valves (B).
Figure 3-2. Water Control Valves
(000145)
DANGER
Electrocution. In the event of electrical accident,
immediately shut power OFF. Use non-conductive
implements to free victim from live conductor. Apply
first aid and get medical help. Failure to do so will
result in death or serious injury.
(000152)
DANGER
Electrocution. Verify electrical system is
properly grounded before applying power.
Failure to do so will result in death or serious
injury.
(000104)
DANGER
Electrocution. Water contact with a power
source, if not avoided, will result in death
or serious injury.
(000100a)
WARNING
Consult Manual. Read and understand manual
completely before using product. Failure to
completely understand manual and product
could result in death or serious injury.
CAUTION
(000291)
Equipment damage. Do not attempt to start or operate
a unit in need of repair or scheduled maintenance.
Doing so could result in serious injury, death, or
equipment failure or damage.
WARNING
WARNING
(000586)
Before servicing unit, shut unit down, turn water supply
OFF, and disconnect unit from power source. Failure
to do so could result in death, serious injury, or
equipment damage.
WARNING
Personal injury. Keep people and pets away from work
area. Failure to do so could result in death or serious
injury.
(000420)
WARNING
(000584
)
Personal injury. Only use water from controlled, reliable
sources. Uncontrolled water could contain bacteria. Inhalin
g
mist containing bacteria could result in death, or serious
injury.
A
009111
008796
B

18 Owner’s Manual for DF7500 Dust Suppression System
Operation
6. See Figure 3-3. Verify power source is properly
connected to socket (C). For power requirements
and setup, see Connecting Power Supply.
Figure 3-3. Electrical Connection
IMPORTANT NOTE: For grounding requirements, fol-
low National Electrical Code (NEC), state, and local regu-
lations.
7. See Figure 3-4. Verify transport lock (D) and (E)
are disengaged. For more information, see Using
Transport Locks.
Figure 3-4. Transport Safety Locks
Starting the Unit
1. See Figure 3-5. Verify emergency switch (A) is in
the out, armed position. If emergency switch is not
armed, twist counterclockwise to reset.
2. Turn input switch (B) ON.
3. Set manual control switch (C) to MANUAL.
4. Press fan (D) ON.
5. Press water pump (E) ON.
6. If using automatic oscillation system, press
oscillation system (F) ON.
NOTE: If using automatic oscillation, system must be set
up prior to operation. See Automatic Oscillation.
NOTE: If the fan does not start and phase controller
error lamp (G) is lit, turn phase controller switch (H) to
PHASE SRT or PHASE SRT then restart fan.
Figure 3-5. Control Panel
Stopping the Unit
NOTE: See Figure 3-5. Stop the unit at any time by
pressing emergency stop (A).
Shut down the unit in the following sequence:
1. Shut off oscillation system (F).
2. Shut off water pump (E).
3. Shut off fan (D).
4. Shut off input switch on control panel (B).
Tilting the Blower
NOTE: Transport locks must be disengaged before tilting
the blower. See Using Transport Locks.
See Figure 3-5. Use control panel tilting lever (I) or
remote control tilt buttons to adjust tilt 0 to 40°.
Manual Rotation
NOTE: Transport locks must be disengaged before
rotating blower. See Using Transport Locks.
1. See Figure 3-5 . Verify oscillation is switched OFF (F).
2. See Figure 3-6 Use handle (A) to rotate blower.
Figure 3-6. Manual rotation
C008950
A
B
008784
008780
D
G
E
A
B
C
F
H
I
A
009116

Owner’s Manual for DF7500 Dust Suppression System 19
Operation
Automatic Oscillation
NOTE: Transport locks must be disengaged before
using oscillation system. See Using Transport Locks.
See Figure 3-7. When the oscillation system is set to
ON, blower rotation is controlled by the placement of
limiting pins (A). Oscillation range can be adjusted by
moving limiting pins to any hole (B) in the deck. When
micro switch (C) contacts a limiting pin the blower
reverses direction.
Figure 3-7. Automatic Oscillation
1. Turn OFF oscillation system. See Control Panel.
2. Manually rotate blower to the extreme the blower
should rotate to the left.
3. Install limiting pin (B) into nearest hole (B) to the
left of micro switch (C).
4. Manually rotate blower to the extreme the blower
should rotate to the right.
5. Install limiting pin (B) into nearest hole (B) to the
right of micro switch (C).
6. Turn ON oscillation system. See Control Panel.
NOTE: When shutting down the unit, switch off
automatic oscillation first. See Stopping the Unit for
proper shutdown sequence.
Using the Transmitter
The operator using the radio control system must:
•Understand transmitter and machine functions.
•Visually follow machine movements activated by
transmitter.
•Switch off transmitting unit whenever suspending
the job.
•Remember the transmitter can activate machine
movements even in indoor locations away from the
receiving unit.
•Never leave the transmitter unattended.
•Avoid using radio control inside shielded areas.
•Replace batteries when discharged.
NOTE: If radio control fails at any time, switch control
switch (A) to MANUAL CONTROL.
1. See Figure 3-8. Move control switch (A) to RADIO
CONTROL.
2. Verify emergency switch (B) is in the out, armed
position. If emergency switch is not armed, twist
counterclockwise to reset.
Figure 3-8. Control Panel
3. See Figure 3-9. Switch main on-off switch (A) on
back of transmitter to ON.
Figure 3-9. Transmitter
4. Select fan on/off (B), pump on/off (C), oscillation on/
off (D), tilting up/down (E), or fan and pump on (F).
NOTE: If LED (G) does not flash or flashes weakly when
a button is pressed, the battery needs to be replaced.
NOTE: Pushing the stop button on the control panel
immediately disables all radio control.
5. Use macro button (G) to automatically switch off
oscillation, pump, and fan in the proper shutdown
sequence.
008805
C
AB008780
B
A
G
A
009034
B
C
D
E
F
G

20 Owner’s Manual for DF7500 Dust Suppression System
Operation
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