Table of Contents

LT12 Series Light Tower
Proposition 65 Warning		2
Reporting Safety Defects		3
Table Of Contents		4
Safety Information		5-12
Lamp Footcandle Plot		13
Speciﬁcations	14-15
Dimensions		16
General Information		17
Components	18-19
Control Panel	20-21
Inspection	22-25
Operation	26-30
Maintenance	31-35
Maintenance — Trailers	36-37
Troubleshooting	38-43
Lt12 Wiring Diagram — S/N 902148 and Below....		44
Lt12 Wiring Diagram — S/N 902148 and Below....		45
Lt12 Wiring Diagram — S/N 902149 to 902625	....	46
Lt12 Wiring Diagram — S/N 902149 to 902625	....	47
Lt12 Wiring Diagram — S/N 902626 and Above ...		48
Lt12 Wiring Diagram — S/N 902626 and Above ...		49
Perkins Engine Wiring Diagram		50
Deutz Engine Wiring Diagram		51
Lt12 Control Panel/Ignition Wiring Diagram		52
Trailer Guidelines	53-67

NOTICE

Speciﬁcations are subject to change without notice.

PAGE 4 — LT12 SERIES LIGHT TOWER • OPERATION MANUAL — REV. #12 (01/20/09)

Page 4

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Contents

Models LT12D, LT12P This Manual Must Accompany the Equipment AT ALL Times Proposition 65 Warning Reporting Safety Defects Nhtsa Table of Contents Speciﬁcations are subject to change without notice Safety Information Safety Messages General Safety Light Tower Safetyﬁre extinguisher ﬁrst aid kit Lamp Safety Engine Safety Before servicing equipment Fuel Safety Towing Safety Transporting Safety Loading and Tie-Down on Flatbed Truck Power Cord/Cable Safety Electrical SafetyGrounding Safety Battery Safety Environmental Safety Lamp Footcandle Plot Lamp Footcandle Plot Generator Speciﬁcations SpecificationsTrailer Speciﬁcations Engine Speciﬁcations Dimensions DimensionsReference Letter Description Dimension Length Mast Stowed Position Length Mast Deployed Position General Information Components Major Components Control Panel Side Rear Control Panel Light CONTROL/BREAKER Control Panel Indoor Installation InspectionBefore Starting Engine OIL Check Fuel Check Battery CheckWipe up any spilled fuel immediately Cleaning the Radiator AIR Cleaner FAN Belt TensionCoolant Operation in Freezing Weather Location of Female Connectors Operation Starting the EngineStarting the Engine Perkins Starting the Engine Lombardini/Deutz Engines Mast Operation Outriggers and Support StandsDeploying the Mast to Vertical Position Raising the Mast Mast Operation Lowering the Mast Stowing the Mast to Horizontal PositionTurning on the Lamps Rotating the Mast Testing the 120 VAC Gfci Receptacle Applying AN External LoadNormal Shutdown Emergency Shutdown Maintenance Basic Inspection and MaintenanceInspection/Maintenance Frequency General Inspection Flushing OUT Radiator and Changing Coolant Changing OIL Check Cable Wear Replacing Fuel Filter Servicingthe Mast RAISE/LOWER Cable System Removal from Long Term Storage StorageLower the mast to the horizontal resting position Adjustable Channel Maintenance TrailersWheel HUB Adjustment Leaf Suspension Leaf Suspension Components Generator Troubleshooting TroubleshootingSymptom Solution Engine Troubleshooting Symptom Possible Cause Solution Engine revolution is not Lamp Troubleshooting When switch is ﬁrst Checking voltage and ballast Turned on Replacement minimizes color differencesClean ﬁxture Lamp starts slowly ARC does not strike Defective Lamp? Lamp Troubleshooting Guide ConnectionsStarting Ballast Removal LT12 Wiring Diagram S/N 902148 and below Stator BLK GRN WHT RED LT12 Wiring Diagram S/N 902149 to LT12 Wiring Diagram S/N 902149 to LT12 Wiring Diagram S/N 902626 and Above BLK BRN Blue RED WHT YEL GRN Perkins Engine Wiring Diagram Deutz Engine Wiring Diagram LT12 Control PANEL/IGNITION Wiring Diagram DEUTZ/LOMBARDINI Specific Common Causes for Loss of Trailer Trailer GuidelinesTrailer Towing Guidelines Driving Conditions Coupling to the TOW Vehicle Trailer Towing Tips Inoperable BRAKES, Lights or MirrorsTrailer VIN TAG Electrical Connector TOW VehicleSuspension System Side View Mirrors Safety Chains JackstandCoupler Types Ball Hitch Coupler Lock washer and hitch frame Coupling theTrailer to theTow Vehicle Ball Coupler Connecting Trailer Lights Attaching Safety ChainUncoupling the Ball Hitch Pintle Hitch Coupler Pintle Coupler and Pintle Hook Unsafe Tires, Lug Nuts or Wheels Tire SafetyCoupling Trailer to Tow Vehicle Pintle Coupler Determining Load Limit of Trailer StepTighten lug nuts before each tow Be sure lug nuts are tight before each tow Tire Fundamentals Determining Load Limit of Tow Vehicle StepP indicates the tire is for passenger vehicles Table A. Speed Rating Uniform Tire Quality Grading Standards UtqgsLetter Rating Speed Rating Tire Safety Tips Table B. Tire Wear TroubleshootingTire Repair Replacing Worn or Damaged Tires Lights and Signals Wheel RimsWheels, Bearings and Lug Nuts Lug Nut Torque Requirements Figure L. Trailer to Tow Vehicle Wiring Diagram HERE’S HOW to GET Help

Multiquip LT12D, LT12P Table of Contents, Speciﬁcations are subject to change without notice

Models: LT12P LT12D

LT12 Series Light Tower

Operation

Lt12 Wiring Diagram — S/N 902149 to 902625

Speciﬁcations are subject to change without notice.