Generac Power Systems DF 2.2 User manual

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Owner’s Manual
For
DF 2.2 Dust Suppression System
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Technical Support
1-800-926-9768

ii Owner’s Manual for DF 2.2 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.
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 MDG25IF4 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
Operating Safety ..........................................................3
Positioning the Unit .....................................................3
Starting the Unit ...........................................................3
Service Safety ..............................................................3
Section 2: General Information
Specifications ...............................................................5
Component Locations .................................................5
Setup .............................................................................6
Water System Connection ...........................................6
Electrical Connection ...................................................6
Section 3: Operation
Operation and Use Questions ....................................7
Before Starting .............................................................7
Starting the Unit ...........................................................7
Stopping the Unit .........................................................8
Adjusting Jet Angle ......................................................8
Lifting the Unit ..............................................................8
Section 4: Maintenance and
Troubleshooting
Daily Walk-Around Inspection ....................................9
General Maintenance ...................................................9
Inspecting the Unit .......................................................9
Preparing for Service ...................................................9
Cleaning the Unit .........................................................9
Inlet Filter Cleaning ....................................................10
Nozzle Cleaning .........................................................10
General Troubleshooting ..........................................10

2Owner’s Manual for MDG25IF4

Owner’s Manual for DF 2.2 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
maintained properly.
The information in this manual is accurate based on
products produced at the time of publication. The
manufacturer 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
Occupational 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
individual 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
circumstance 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
technique 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
carefully. 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 2.2 Dust Suppression System
Introduction and Safety
General Hazards Electrical Hazards
(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)

Owner’s Manual for DF 2.2 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
Service Safety
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
(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. 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 2.2 Dust Suppression System
Introduction and Safety
This page intentionally left blank.

Owner’s Manual for DF 2.2 Dust Suppression System 5
General Information
Section 2: General Information
Specifications
Component Locations
Figure 2-1. Component Locations
Description Units DF 2.2
Voltage V 240
Hertz Hz 60
Pump Power kW 2.2
Electric Connection - L6-15 NEMA twistlock
Water Connection - 3/4“ garden hose
Fan - 9 Nylon blades, aluminum hub
Nominal Pressure psi (bar) 14.5 (1) - 72.5 (5)
Water Consumption psi -- gal/min
(bar --l/min)
14.5 -- 1.44 (1.0 – 5.4)
21.8 -- 1.74 (1.5 – 6.6)
29 -- 1.98 (2.0 – 7.5)
36.3 -- 2.25 (2.5 – 8.5)
Air Flow ft3/min (mm3/min) 295 (90)
Water Inlet Filter μm 300
Nozzles Holder - Stainless steel w/ 12 connection
Tilting Angle ° 10 to 50
Weight lb (kg) 175 (79)
Dimensions L x W x H ft
(L x W x H mm)
3.3 X 2.6 X 2.74
(985 x 785 x 835)
Specifications are subject to change without notice. Refer to the product specification sheet for complete list.
AStart Button ELifting Hook IWater Connection
BSocket FNozzles JTilting Blower Handle
CStop Button GWater Filter KForklift Pockets
DTilting Blower Knob H Water Tap
I
008844
E
D
GH
B
A
C
008843
J
F
K

6 Owner’s Manual for DF 2.2 Dust Suppression System
General Information
Setup
Water System Connection
1. See Figure 2-2. Verify water valve (A) is closed.
Figure 2-2. Connecting Water Supply
2. Connect water supply to water fitting (B).
Electrical Connection
1. See Figure 2-3 . Verify switch (A) is in OFF position.
Figure 2-3. Electrical Connection
2. Connect to socket (B) 240v power with the
following requirements:
•Extension cord must be marked “WA” or indicate it
is suitable for outdoor use.
•Power source must be equipped with residual-
current device (RCD) protection.
•Use adequately sized extension cords of
appropriate length. See Table 1 for recommended
cable size and length.
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.
A
B
008852
Table 1 - Recommended Shore Power Cable
Size and Length
Suggested Power Cables and Lengths
50 ft. (15.2 m) 10/3—(L5-20P – L5-20R)
100 ft. (30.5 m) 12/3—(5-15P – 5-15R)
(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.
A
B
008853

Owner’s Manual for DF 2.2 Dust Suppression System 7
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. Verify sufficient water supply is properly connected
See Water System Connection.
4. Inspect all electrical cords; repair or replace any
cords that are cut, worn, or bare.
5. Verify power cord is properly connected to a 240
volt 60 hz power source. See Electrical
Connection.
NOTE: For grounding requirements, follow the National
Electrical Code (NEC), state, and local regulations.
Starting the Unit
1. See Figure 3-1. Press start button (A) to start fan.
Figure 3-1. Starting the Unit
2. See Figure 3-2. Open valve (B).
Figure 3-2. Starting the 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.
(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
(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.
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. Inhaling
mist containing bacteria could result in death, or serious
injury.
A
008856
B
008852

8 Owner’s Manual for DF 2.2 Dust Suppression System
Operation
Stopping the Unit
1. See Figure 3-1. Close water valve (A).
2. Wait for water to stop spraying from nozzles (B).
Figure 3-3. Stopping the Unit
3. See Figure 3-4. Press stop button (C).
Figure 3-4. Stopping the Unit
Adjusting Jet Angle
1. See Figure 3-5. Pull tilting blower knob (A).
2. Use handle (B) to tilt blower to desired angle.
3. Release tilting blower knob to lock position.
Figure 3-5. Adjusting Jet Angle
Lifting the Unit
1. Verify the equipment being used to lift the unit is in
good condition and has sufficient capacity. For
approximate weights, see Specifications.
2. See Figure 3-6. Always remain aware of people
and objects around the work site when moving or
lifting the unit.
•When lifting the unit, attach any slings, chains, or
hooks directly to the central lift point (A).
•Use forklift pockets (B) with care. Avoid
approaching the unit at an angle, as this can
permanently damage the forklift pockets, tires, or
cabinet. Verify any obstructions are clear of the
forklift tines before lifting.
Figure 3-6. Lifting Points
A
008844
B
B
008844
C
A
B
008857
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)
A
008844
B

Owner’s Manual for DF 2.2 Dust Suppression System 9
Maintenance and Troubleshooting
Section 4: Maintenance and Troubleshooting
Daily Walk-Around Inspection
Perform a walk-around inspection of the unit every day
before starting the unit. Look for conditions that could
hinder performance or safety, such as (but not limited to)
damaged or missing parts and hardware, and loose or
broken electrical connections.
General Maintenance
Poorly maintained equipment can become a safety
hazard. In order for the equipment to operate safely and
properly over a long period of time, periodic maintenance
and occasional repairs are necessary. DO NOT perform
routine service unless all electrical components are OFF.
Regular maintenance will improve performance and
extend engine/equipment life. Generac Mobile Products
LLC recommends all maintenance work be performed by
a Generac Mobile Products Authorized Dealer (ASD).
Inspecting the Unit
•If the unit is stored outside, check for water inside
the cabinet and control panel cover before each
use. If wet, dry the unit thoroughly before starting.
•Inspect condition of electrical cords. DO NOT use
the unit if insulation is cut or worn through.
•Verify the wheels and locking caster are present
and in serviceable condition.
Preparing for Service
Before servicing the unit, always follow the instructions
listed below.
1. Verify unit power switch is OFF.
2. Disconnect shore power from the unit.
3. Disconnect water supply from the unit.
4. Attach a DO NOT USE sign to the control panel.
This will notify everyone that the unit is being
serviced and will reduce the chance of someone
inadvertently trying to start the unit.
Cleaning the Unit
See Figure 4-1 . After each use, clean nozzles (A) with a
water solution and antilimestone product.
Figure 4-1. Cleaning the Unit
Always clean the unit after each use to remove dust,
grease, mud, or spilled fuel or oil. Use soft, clean rags to
wipe the cabinet exterior and control panel. Low-pressure
compressed air (less than 40 PSI [276 kPa]) can also be
used to remove dust and debris from the cabinet interior.
This unit contains sensitive electronic components that
can be damaged by high pressure, heat and moisture.
Do not wash the unit with a high pressure hose or power
washer. Water may enter the cabinet and collect in the
control panel or other electrical parts, causing damage.
M
Maintenance
Activity
After First
Operation
Before
Each Use
Semi-
Annually
Check all electrical
connections

Clean Inlet Filter 
Clean Nozzles 
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.
CAUTION
(000306)
Equipment Damage. Failure to perform a daily
inspection could result in damage to the unit.
A

10 Owner’s Manual for DF 2.2 Dust Suppression System
Maintenance and Troubleshooting
Inlet Filter Cleaning
1. Figure 4-2 . Remove inlet filter plug (A).
2. Remove filter cartridge.
3. Tap cartridge on a solid surface and blow with com-
pressed air to remove sediment.
4. Install cartridge and replace inlet filter plug.
Figure 4-2. Cleaning Inlet Filter
Nozzle Cleaning
1. Remove nozzles from blower cone with a wrench.
2. Soak nozzles in an antilimestone solution over-
night.
3. Rinse nozzles.
4. Reinstall nozzles
.
Figure 4-3. Cleaning Nozzles
General Troubleshooting
This information is intended to be a check or verification for simple causes that can be located and fixed. It does not
cover all types of problems. See the engine operator’s manual for additional troubleshooting information. Procedures
that require in-depth knowledge or skills should be performed by an ASD.
A
A
Problem Possible Cause Solution
Fan Doesn’t work Plug not correctly connected Verify plug is seated fully in socket.
Uneven water jet Dirty or clogged nozzles Clean nozzles. See Nozzle Cleaning.

Part No. 10000024569 Rev. A 10/19/18
©2018 Generac Power Systems, Inc.
All rights reserved
Specifications are subject to change without notice.
No reproduction allowed in any form without prior written
consent from Generac Power Systems, Inc.
Generac Mobile Products, LLC
215 Power Drive, Berlin, WI 54923
GeneracMobileProducts.com │800-926-9768 │920-361-4442