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Summary of Contents for Generac Mobile MFH500
- Page 1 MFH500 Flameless Air Heater Owner’s Manual For technical assistance contact: www.generacmobileproducts.com Technical Support 1-800-926-9768 SAVE THIS MANUAL FOR FUTURE REFERENCE...
- Page 2 Engine and generator serial numbers are located on data Unit Serial No. plates affixed to the engine and generator, respectively. When contacting a Generac Mobile Authorized Service Engine Model No. Dealer (GMASD) about parts and service, always provide the unit model and serial number.
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Page 3: Table Of Contents
Table of Contents Section 1:Introduction and Safety Before Starting Engine ........14 Pre-start Checklist .............14 Introduction ............1 Checking Hydraulic Oil Level ........14 Read This Manual Thoroughly ........1 Checking Engine Coolant Level ........14 Intended Applications .........1 Checking Battery ............15 Safety Rules ............1 Ducting Guidelines .......... - Page 4 Section 6:Installation Diagrams and Service Engine Harness (1 of 3) ........33 Engine Harness (2 of 3) ........34 Engine Harness (3 of 3) ........35 Trailer Wiring Harness ........36 Service Log ............37 Owner’s Manual for Flameless Air Heater...
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Page 5: Section 1:Introduction And Safety Introduction
As a tow vehicle. maintained properly. • As a ladder or work surface. The MFH500 flameless air heater is designed and built • During extreme weather. for sustained reliable heat production in industrial operat- ing conditions and environments. The MFH500 is built to •... -
Page 6: How To Obtain Service
Introduction and Safety These safety alerts cannot eliminate the hazards that they indicate. Common sense and strict compliance with WARNING the special instructions while performing the action or Hearing Loss. Hearing protection is service are essential to preventing accidents. recommended when using this machine. The operator is responsible for proper and safe use of Failure to wear hearing protection could the equipment. -
Page 7: Explosion And Fire Hazards
Introduction and Safety – Sparking occurs. nothing that might alter safe application/usage and render unit noncompliance with – Engine misfires or there is excessive engine/ aforementioned codes, standards, laws, and regulations. generator vibration. – Protective covers are loose or missing. Battery Hazards Explosion and Fire Hazards WARNING... -
Page 8: Trailer Hazards
Introduction and Safety • • Before servicing the unit, verify the control power Coupler is secured and locked to the hitch. switch is OFF (O), and the negative (-) terminal on • Electrical connections are made. the battery is disconnected. DO NOT perform even •... -
Page 9: Towing Safety
Reporting Trailer Safety Defects If you believe your trailer has a defect which could cause a crash, injury or death, you should immediately inform the National Highway Traffic Safety Administration (NHTSA) in addition to notifying Generac Mobile. Owner’s Manual for Flameless Air Heater... - Page 10 Introduction and Safety This page intentionally left blank. Owner’s Manual for Flameless Air Heater...
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Page 11: Section 2:General Information
Section 2: General Information Specifications Description Unit of Measure MFH500 Engine ® Make (Model) — Isuzu (4JJ1TT4) EPA Certification tier 4 Final turbo, liquid cooled Type — Horsepower At Operating Speed hp (kW) 73 (54.4) Operating Speed 2,000 Displacement 183 (3.0) -
Page 12: Unit Dimensions
VIN and tire loading assistance, you may be asked to provide this information. information are found on these tags. Record the VIN Tag TIRE AND LOADING INFORMATION MANUFACTURED BY/FABRIQUE PAR: Generac Mobile Products LLC DATE: 00/0000 GVWR/PNBV: 000KG (0000LBS) COLD INF. -
Page 13: Component Locations
General Information Component Locations Exterior Figure 2-3. Exterior Components Roof beacon Forklift pocket (4 locations) Air intake Tie-down (4 locations) Engine exhaust Control panel Fuel fill Hot air discharge ducts Owner’s Manual for Flameless Air Heater... -
Page 14: Interior
General Information Interior 002599 Left Side 002600 Right Side Figure 2-4. Interior Components Fuel cooler (behind shield) Breakaway battery for trailer Engine coolant reservoir M Diesel engine turbo charger Diesel engine Positive air shutdown (PAS) Air cleaner Controller Hydraulic fluid breather Radiator and engine fan Hydraulic fluid level gauge PAS test switch... -
Page 15: Engine Oil Recommendations
General Information Engine Oil Recommendations Fuel System DANGER Explosion and Fire. Fuel and vapors are extremely flammable and explosive. Keep fire and spark away. Failure to do so will result in death or serious injury. (000168) DANGER Explosion and Fire. Do not overfill fuel tank. Overfilling may cause fuel to leak and ignite 001577 or explode, resulting in death or serious injury. -
Page 16: Emissions
General Information Emissions The United States Environmental Protection Agency (US EPA) (and California Air Resources Board (CARB), for engines/equipment certified to California standards) requires this engine/equipment to comply with exhaust and evaporative emissions standards. Locate the emissions compliance decal on the engine to determine applicable standards. -
Page 17: Section 3:Operation Placement
Section 3: Operation Placement Using the Forklift Pockets DANGER WARNING Asphyxiation. Running engines produce Personal injury. Excessive weight. Use only carbon monoxide, a colorless, odorless, appropriate lifting eyes and lifting equipment to poisonous gas. Carbon monoxide, if not lift unit. Improper lifting techniques could result in avoided, will result in death or serious injury. -
Page 18: Before Towing Checklist
Operation Before Towing Checklist – Outlets and fan intakes • Verify air duct hose is securely fastened to outlet • Verify breakaway brake battery is fully charged. duct assembly. • Test the breakaway brake system before each use. • Verify all inlet and outlet ducts are open and •... -
Page 19: Checking Battery
Operation Checking Battery • Use only the necessary length of ducting required; do not exceed maximum length. WARNING • DO NOT leave any input or output ports closed during operation. All ports must remain open, even Electrical shock. Disconnect battery ground if they are unused, to avoid static air buildup. -
Page 20: Operation Procedure
Operation current then rises to the value in the Max Current field. CAUTION 3. The unit reads the value in the startup delay field Equipment damage. Continuous engagement of the on the fan settings screen when max current is starter to the flywheel ring gear without intermission reached, and begins counting it down. -
Page 21: Adjusting Heater Output
Operation MANUAL Mode 7. See Figure 3-7. When the heater is warm, heat begins blowing from ducts and the screen displays In MANUAL mode, heater output can be set to minimum “Heater On--Press OFF to stop the heater”. fan or maximum fan, as follows: •... -
Page 22: Fuel Level Warning
Operation Fuel Level Warning 001583 Figure 3-13. Cool-down Complete Figure 3-11. Fuel Warning Alert 3. When the control screen indicates it is safe to turn off the engine, turn the ignition key switch to OFF. • The window will appear when fuel level gets below 12%. -
Page 23: Section 4:Maintenance
Section 4: Maintenance Maintenance Checking Engine Oil Level Regular maintenance will improve performance and extend engine/equipment life. Generac Mobile recom- CAUTION mends that all maintenance work be performed by a Engine damage. Verify proper type and quantity of GMASD. Regular maintenance, replacement, or repair of engine oil prior to starting engine. -
Page 24: Draining Fluids-Central Fluid Drain System
Maintenance 4. Add oil if necessary to adjust the level. After adding To drain a fluid: or changing the oil, the engine should run for one IMPORTANT NOTE: Drain one fluid at a time. minute before checking the oil level. Wait 10 min- utes to allow the engine to cool and oil to fully drain WARNING into the oil pan. -
Page 25: Adding Coolant
Maintenance Adding Coolant 1. See Figure 4-4. Locate the threaded plug at the front and underneath the unit (A). DANGER Risk of poisoning. Do not use mouth to siphon coolant. Doing so will result in death or serious injury. (000149) WARNING Risk of burns. -
Page 26: Removing Water From Fuel
Maintenance Removing Water From Fuel NOTE: Belts must be replaced as a set. Otherwise, pre- mature belt wear can result because of uneven belt A water sedimenter is provided to separate the water length. contained in the fuel. The sedimenter housing contains a float that moves up Maintenance Schedule and down in accordance with level change of the sepa- Periodic inspection, service, and maintenance of this unit... -
Page 27: Engine Maintenance Schedule
Maintenance Engine Maintenance Schedule Every Every Every Every Daily 250 hr 500 hr 750 hr 1,000 hr • Check engine oil level • Inspect engine for fuel, oil, and coolant leaks • Check oil pressure gauge registration • Check oil pressure warning lamp •... - Page 28 Maintenance • Check and clean the starter and alternator • Check cylinder compression pressure* • Check valve clearance* NOTE: After 1,000 hrs, all hours-based checks and maintenance should now be performed every 250 hrs. NOTE: For items marked *, consult equipment supplier. The following maintenance items should be performed annually, regardless of operation hours: Hydraulic breather/separator •...
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Page 29: Battery Inspection
Maintenance Battery Inspection NOTE: See Figure 4-6. Open controller door and remove 5 A fuse. WARNING Explosion. Batteries emit explosive gases while charging. Keep fire and spark away. Wear protective gear when working with batteries. Failure to do so could result in death or serious injury. (000137a) WARNING Risk of burn. -
Page 30: Battery Installation And Replacement
Maintenance Other Maintenance Checks Battery Installation and Replacement The following inspections should be performed by an CAUTION authorized service technician, or a properly trained authorized operator. These maintenance items require a Equipment damage. Do not make battery high level of experience and skill to evaluate and correct. connections in reverse. -
Page 31: Section 5:Troubleshooting
Section 5: Troubleshooting General Troubleshooting Guide Problem Cause Solution Verify there is no fuel leakage and No fuel. replenish. Replenish oil to full. See Draining Low oil level. Fluids—Central Fluid Drain System. Turn emergency shutdown switch Emergency shutdown switch is ON. OFF. - Page 32 Troubleshooting Adjust by idling control equipment on Insufficient idling. the machine. If adjustment is not possible, contact ISUZU dealer. Remove water and change element. Clogged fuel filter. Removing Water From Fuel. Engine starts but stops Clogged pre-fuel filter. Clean or change element. shortly thereafter Clogged air cleaner.
- Page 33 Troubleshooting Problem Cause Solution Insufficient warm-up time. Conduct warm-up operation. Correct oil level. See Draining Excessive engine oil. Fluids—Central Fluid Drain System Refilling Engine Oil. Exhaust smoke is white Engine control system problem. Faulty injection pump. Contact a GMASD. Fuel system problem. Verify engine rpm.
- Page 34 Troubleshooting Problem Cause Solution Access doors are open. Close all access doors. Open the air outlets and verify there Air outlets are closed. are no obstructions or extreme bends in the ducting. Front radiator or rear oil cooler are full of Clean the machine.
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Page 35: Digital Controller Status Messages
Troubleshooting Digital Controller Status Messages Message Cause Engine Warming – Please Wait Engine coolant temperature < 140 °F (60 °C) Engine Preheat Wait approximately 10 seconds after heater power up Engine rpm < 500 Engine is not ready – Check rpm, Fuel Level, or Fuel level <... - Page 36 Troubleshooting This page intentionally left blank. Owner’s Manual for Flameless Air Heater...
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Page 37: Engine Harness (1 Of 3)
Section 6: Installation Diagrams and Service Log Engine Harness (1 of 3) Owner’s Manual for Flameless Air Heater... -
Page 38: Engine Harness (2 Of 3)
Installation Diagrams and Service Log Engine Harness (2 of 3) Owner’s Manual for Flameless Air Heater... -
Page 39: Engine Harness (3 Of 3)
Installation Diagrams and Service Log Engine Harness (3 of 3) Owner’s Manual for Flameless Air Heater... -
Page 40: Trailer Wiring Harness
Installation Diagrams and Service Log Trailer Wiring Harness Owner’s Manual for Flameless Air Heater... -
Page 41: Service Log
Installation Diagrams and Service Log Service Log OIL GRADE: _____________________________________ BRAND: __________________________________ COOLANT MIXTURE: _____________________________ BRAND: __________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ Hours to Coolant Hours to Coolant Date Oil Level Date Oil Level Service Level Service Level Owner’s Manual for Flameless Air Heater... - Page 42 Installation Diagrams and Service Log This page intentionally left blank. Owner’s Manual for Flameless Air Heater...
- Page 44 ©2019 Generac Mobile Products, LLC All rights reserved. Generac Mobile Products, LLC Specifications are subject to change without notice. 215 Power Drive, Berlin, WI 54923 No reproduction allowed in any form without prior written GeneracMobileProducts.com │800-926-9768 │920-361-4442 consent from Generac Mobile Products, LLC.
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