background image

Owner’s Manual for Indirect Fired Heater

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 qual-
ity use when maintained properly. 
The MAC1.2G indirect fired heater is designed and built
for sustained, reliable heat production in industrial oper-
ating conditions and environments. The MAC1.2G is built
to withstand frequent handling under these conditions.
The unit is mounted on a trailer that has forklift access
and chain attach points on both sides. The fully enclosed
design protects the operating components, allowing all-
weather storage and operations.
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 the manual is not understood, contact

your nearest Generac Mobile Products (GMP) Autho-

rized Service Dealer (ASD), or contact Generac Mobile

Products Customer Service at 800-926-9768, or visit

www.generacmobileproducts.com

 with any questions

or concerns.
The owner is responsible for proper maintenance and

safe use of the unit. The manufacturer strongly recom-

mends that all users read the owner’s manual and thor-

oughly understand all instructions before using this unit.

The manufacturer also strongly recommends instructing

other users to properly start and operate the unit. This

prepares them if they need to operate the unit in an

emergency.
SAVE THESE INSTRUCTIONS for future reference. This

manual contains important instructions for the unit that

should be followed during placement, operation, and

maintenance of the unit and its components. Always sup-

ply this manual to any individual that will use this unit.

Intended Applications

The machine is designed for industrial use. Examples of
intended applications include, but are not limited to:

Gas and oil exploration

Utilities and power plants

Mining

Construction

Agricultural applications

Employee locker areas and housing

Emergency thawing

Pre-warming of equipment and motors

Offshore drilling rigs

Painting and coating locations

Airline hanger heat

Dehumidification

Using this machine for applications other than its
intended purpose may void the warranty. Examples of
misuse include, but are not limited to, using the machine:

To transport persons or equipment.

As a tow vehicle.

As a ladder or work surface.

During extreme weather.

Indoors.

If it is incorrectly serviced or maintained.

Safety Rules

The manufacturer cannot anticipate every possible cir-

cumstance that might involve a hazard. The alerts in this

manual, and on tags and decals affixed to the unit, are

not all inclusive. If using a procedure, work method, or

operating technique that the manufacturer does not spe-

cifically recommend, verify that it is safe for others and

does not render the equipment unsafe.
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 haz-

ardous if performed incorrectly or carelessly. Observe

them carefully. Alert definitions are as follows:

(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.

Summary of Contents for MAC1.2G

Page 1: ...AVE THIS MANUAL FOR FUTURE REFERENCE MAC1 2G Indirect Fired Heater Owner s Manual MODEL NUMBER _________________________ SERIAL NUMBER _________________________ DATE PURCHASED ________________________...

Page 2: ...u to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm Always start and operate the engine in a well ventilated area If in an enclosed area vent t...

Page 3: ...endation 11 Fuel System 11 Trailer Towing Guidelines 11 Wheel Chock Guidelines 12 Control Panel 12 Section 3 Operation Before Starting Engine 13 Pre start Checklist 13 Engine Oil Level Check 13 Engine...

Page 4: ...iv Owner s Manual for Indirect Fired Heater This page intentionally left blank...

Page 5: ...owed during placement operation and maintenance of the unit and its components Always sup ply this manual to any individual that will use this unit Intended Applications The machine is designed for in...

Page 6: ...Do not operate unit during transport Doing so could result in death serious injury or property damage 000231a WARNING 000111 WARNING Moving Parts Keep clothing hair and appendages away from moving par...

Page 7: ...r 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...

Page 8: ...ed Running Lights Verify directional and brake lights on trailer are connected and working properly Safe Towing Techniques Practice turning stopping and backing up in an area away from heavy traffic p...

Page 9: ...nd cleaning the unit Decal part numbers can be found in the unit parts manual at www generacmobileproducts com Figure 1 1 Safety and Operating Decal Locations Item No Label Description Item No Label D...

Page 10: ...6 Owner s Manual for Indirect Fired Heater Introduction and Safety This page intentionally left blank...

Page 11: ...Pressure 3 in H2O Air Outlet 1 x 20 in 50 8 cm Electrical 12V Engine Fuel Diesel Engine Fuel Capacity USA 270 gal 1022 L Engine Oil Capacity 7 1 qt 6 7 L Engine Coolant Capacity 2 1 qt 2 L Engine Fue...

Page 12: ...y not shown H Engine oil drain value B Coolant sub tank not shown I Engine oil drain hose C Radiator fill cap J Engine oil dipstick D Engine air cleaner assembly K Engine fuel filter E Engine fan L Wa...

Page 13: ...onents A Burner exhaust I Oil drain hose not shown B Reflector J Trailer support jack C Rear support jack K Trailer hitch D D ring L Engine exhaust E Reflector tape M Fuel fill F Fork lift pockets N A...

Page 14: ...Indirect Fired Heater General Information Heater Components Figure 2 3 Heater Components A Outlet temp thermostat D Inspection window B Burner temp thermostat E Diesel fired burner C Electrical contro...

Page 15: ...hichever comes first For more information see the engine manual Fuel System The heater is designed to operate with diesel fuel IMPORTANT NOTE Comply with all laws regulating the storage handling and t...

Page 16: ...the brakes while descending grades this can cause overheating and potential brake fail ure Do not apply the tow vehicle brakes to correct ex treme trailer swaying Continued pulling of the trailer and...

Page 17: ...ine for one min ute before checking the oil level Wait 10 minutes to allow the engine to cool and oil to fully drain into the oil pan Typical causes of inaccurate oil level readings Reading the high l...

Page 18: ...n burner to ON 7 See Ducting Guidelines Place heating ducts as appropriate for the application IMPORTANT NOTE A twisted or bent air duct will cause loss of air pressure and temperature NOTE Do not use...

Page 19: ...the up or down buttons until desired value is reached 5 Press the MENU button to save The display will return to the sensor temperature NOTE If the MENU button is not pressed after changing the setpo...

Page 20: ...16 Owner s Manual for Indirect Fired Heater Operation This page intentionally left blank...

Page 21: ...or cracking fraying and stretching Verify the belt is properly seated in the pulley grooves See Maintenance Schedule Check fluid levels Inspect electrical connectors battery and ground points Look for...

Page 22: ...ons such as very high or very low ambient conditions or extremely dirty or dusty environments Use the unit hour meter or calendar time whichever occurs first from the previous maintenance interval to...

Page 23: ...ystem Check and adjust engine speeds Inspect engine mounts Inspect engine ground connection Every 1000 Hours Inspect generator ball bearings Every 2000 Hours Check the DC no load excitation voltage Se...

Page 24: ...Replacement When required the battery must be replaced with one of equivalent size voltage and CCA cold crank amp capacity Contact a GMP ASD for correct battery size A new battery must be filled with...

Page 25: ...cal connections for any bare wires or other damage Rectify any issues before using the trailer Short Term Storage When the machine will not be in use for three or more months follow the guidelines bel...

Page 26: ...22 Owner s Manual for Indirect Fired Heater Maintenance This page intentionally left blank...

Page 27: ...e or corroded connections Clean and tighten connections Hard to start or will not start Engine starting under load Disengage PTO Incorrect starting procedure Review starting procedure See Pre start Ch...

Page 28: ...Adjust valve clearance or contact a GMP ASD Dirty or faulty fuel injectors Contact a GMP ASD Air leak in engine intake or exhaust mani fold Check intake and exhaust manifold gaskets and manifolds rep...

Page 29: ...n camshaft lobes Worn rocker arm shaft s Worn valve guides Damaged valve retainers Loose or worn rocker arms Bent pushrods Broken valve springs Bent connecting rods Worn flywheel Loose flywheel Excess...

Page 30: ...ing Flush coolant system Engine overloaded Reduce engine load Loose or faulty fan belt Check automatic belt tensioner and belts Replace as required Faulty or wrong type of thermostat s Test thermostat...

Page 31: ...Batteries will not charge Loose or corroded connections Clean and tighten connections Sulfated or worn out batteries Replace batteries See Battery Instal lation and Replacement Stretched belt or fault...

Page 32: ...28 Owner s Manual for Indirect Fired Heater Troubleshooting This page intentionally left blank...

Page 33: ...____________________________________________ __________________________________________________________________________________________ ________________________________________________________________...

Page 34: ...30 Owner s Manual for Indirect Fired Heater Service Log This page intentionally left blank...

Page 35: ......

Page 36: ...hts reserved Specifications are subject to change without notice No reproduction allowed in any form without prior written consent from Generac Mobile Products LLC Generac Mobile Products LLC 215 Powe...

Reviews: