Page 2 - TABLE OF CONTENTS; NOTICE
PAGE 2 — LT12D50SA LIGHT TOWER • OPERATION MANUAL — REV. #0 (03/16/09) TABLE OF CONTENTS LT12D50SA Light Tower Table Of Contents .................................................... 2Safety Information .............................................. 3-10Lamp Footcandle Plot .............................
Page 3 - SAFETY INFORMATION; SAFETY MESSAGES; DANGER
LT12D50SA LIGHT TOWER • OPERATION MANUAL — REV. #0 (03/16/09) — PAGE 3 SAFETY INFORMATION Do not operate or service the equipment before reading the entire manual. Safety precautions should be followed at all times when operating this equipment. Failure to read and understand the safety messages and...
Page 4 - GENERAL SAFETY
PAGE 4 — LT12D50SA LIGHT TOWER • OPERATION MANUAL — REV. #0 (03/16/09) SAFETY INFORMATION GENERAL SAFETY CAUTION NEVER operate this equipment without proper protective clothing, shatterproof glasses, respiratory protection, hearing protection, steel-toed boots and other protective devices required...
Page 5 - LIGHT TOWER SAFETY; LAMP SAFETY
LT12D50SA LIGHT TOWER • OPERATION MANUAL — REV. #0 (03/16/09) — PAGE 5 SAFETY INFORMATION LIGHT TOWER SAFETY DANGER NEVER use light tower in rain, snow, or areas of high humidity that could generate electrical storms. NEVER operate the equipment in an explosive atmosphere or near combustible mat...
Page 6 - ENGINE SAFETY
PAGE 6 — LT12D50SA LIGHT TOWER • OPERATION MANUAL — REV. #0 (03/16/09) SAFETY INFORMATION ENGINE SAFETY DANGER The engine fuel exhaust gases contain poisonous carbon monoxide. This gas is colorless and odorless, and can cause death if inhaled. The engine of this equipment requires an adequate fr...
Page 7 - FUEL SAFETY; TOWING SAFETY; Trailer tires should be infl ated to 50 psi cold
LT12D50SA LIGHT TOWER • OPERATION MANUAL — REV. #0 (03/16/09) — PAGE 7 SAFETY INFORMATION FUEL SAFETY DANGER DO NOT start the engine near spilled fuel or combustible fl uids. Diesel fuel is extremely fl ammable and its vapors can cause an explosion if ignited. ALWAYS refuel in a well-ventilated ...
Page 8 - TRANSPORTING SAFETY; Loading and Tie-Down on Flatbed Truck
PAGE 8 — LT12D50SA LIGHT TOWER • OPERATION MANUAL — REV. #0 (03/16/09) SAFETY INFORMATION TRANSPORTING SAFETY CAUTION Before lifting, make sure that light tower parts are not damaged and screws are not loosened or lost. ALWAYS make sure crane or lifting device has been properly secured to liftin...
Page 9 - ELECTRICAL SAFETY; Power Cord/Cable Safety; Grounding Safety
LT12D50SA LIGHT TOWER • OPERATION MANUAL — REV. #0 (03/16/09) — PAGE 9 SAFETY INFORMATION ELECTRICAL SAFETY DANGER The electrical voltage required to operate the generator can cause severe injury or even death through physical contact with live circuits. Turn generator and all circuit breakers OFF...
Page 10 - BATTERY SAFETY; ENVIRONMENTAL SAFETY
PAGE 10 — LT12D50SA LIGHT TOWER • OPERATION MANUAL — REV. #0 (03/16/09) SAFETY INFORMATION BATTERY SAFETY DANGER DO NOT drop the battery. There is a possibility that the battery will explode. DO NOT expose the battery to open fl ames, sparks, cigarettes, etc. The battery contains combustible gas...
Page 11 - LAMP FOOTCANDLE PLOT; Lamp Footcandle Plot
LT12D50SA LIGHT TOWER • OPERATION MANUAL — REV. #0 (03/16/09) — PAGE 11 LAMP FOOTCANDLE PLOT Lamp Footcandle Plot Figure 1.
Page 12 - SPECIFICATIONS; Table 1. LT12D50SA Specifi cations
PAGE 12 — LT12D50SA LIGHT TOWER • OPERATION MANUAL — REV. #0 (03/16/09) SPECIFICATIONS Table 1. LT12D50SA Specifi cations Light Tower Model LT12D50SA Engine Model Lombardini LDW 1003 Diesel Engine Weight (Dry) 1,550 lbs. (700 kg.) Support Points 5 Wind Stability with Genset 65 mph (80.46 kph) Lamps ...
Page 13 - Engine Specifi cations
LT12D50SA LIGHT TOWER • OPERATION MANUAL — REV. #0 (03/16/09) — PAGE 13 SPECIFICATIONS Engine Specifi cations Table 2. Lombardini LDW 1003 Diesel Engine Engine Type 3-cylinder, Diesel Engine Displacement 62.73 cu. in. (1028 cc) Max Output Standby 11 H.P. at 1,500 R.P.M. Fuel Tank Capacity Approx. 30...
Page 14 - DIMENSIONS; Dimensions; RIGHT SIDE
PAGE 14 — LT12D50SA LIGHT TOWER • OPERATION MANUAL — REV. #0 (03/16/09) DIMENSIONS Dimensions Figure 2. Dimensions Table 3. Reference Letter Description Dimension A Length (Mast Stowed Position) 170 in. (431 cm.) B Length (Mast Deployed Position) 101 in. (256 cm.) C Max. Height (Mast Deployed Positi...
Page 15 - GENERAL INFORMATION
LT12D50SA LIGHT TOWER • OPERATION MANUAL — REV. #0 (03/16/09) — PAGE 15 GENERAL INFORMATION The Multiquip LT12D50SA Light Tower is a dedicated general pur pose light tower engineered to provide dependable lighting for a wide range of applications. This includes lighting for construction sites, indus...
Page 16 - COMPONENTS
PAGE 16 — LT12D50SA LIGHT TOWER • OPERATION MANUAL — REV. #0 (03/16/09) COMPONENTS Major Components (Control Panel Side) Figure 3. 8 6 11 10 12 14 15 16 17 1 2 4 5 7 9 3 13 18 18 Figures 3 and 4 show the location of the controls and components for the LT12D50SA light tower. The function of each cont...
Page 17 - REAR; FRONT
LT12D50SA LIGHT TOWER • OPERATION MANUAL — REV. #0 (03/16/09) — PAGE 17 COMPONENTS Safety Chain 14. — Always attach safety chain to the towing vehicle. Never tow the light tower with the safety chain unattached. Ball Hitch Coupler 15. — Attach this coupler to the towing vehicle. Use only the specifi...
Page 18 - CONTROL PANEL; Controls and Indicators; ED
PAGE 18 — LT12D50SA LIGHT TOWER • OPERATION MANUAL — REV. #0 (03/16/09) CONTROL PANEL Controls and Indicators Figure 5. = NOT U S ED LIGHT CONTROL/BREAKER LOMBARDINI 120 VAC/15A GFCI BREAKER 240 VAC/30A MAIN BREAKER 10 11 8 13 7 9 12 6 3 2 1 4 5
Page 19 - OK
LT12D50SA LIGHT TOWER • OPERATION MANUAL — REV. #0 (03/16/09) — PAGE 19 CONTROL PANEL Figure 5 shows the location of the controls and indicators on the control panel for the different engines used with the LT12 light tower. Service the equipment as needed depending on the alarm indicated. Below is a...
Page 20 - INSPECTION; BEFORE STARTING; WARNING; Oil Dipstick; FUEL CHECK; Recommended Motor Oil
PAGE 20 — LT12D50SA LIGHT TOWER • OPERATION MANUAL — REV. #0 (03/16/09) INSPECTION BEFORE STARTING Read all safety instr uctions at the beginning of 1. manual. Clean the light tower, removing dirt and dust, particularly 2. the engine cooling air inlet and air cleaner. Check the air fi lter for dirt ...
Page 21 - Adding Fuel; BATTERY CHECK; Battery
LT12D50SA LIGHT TOWER • OPERATION MANUAL — REV. #0 (03/16/09) — PAGE 21 To check the engine fuel level, make sure the light 1. tower is placed on secure level ground with the engine stopped. Lift the light tower access door (Figure 7) opposite the 2. control panel. Set the door support latch in plac...
Page 22 - COOLANT; Coolant Capacity; CLEANING THE RADIATOR; Fan Belt Tension
PAGE 22 — LT12D50SA LIGHT TOWER • OPERATION MANUAL — REV. #0 (03/16/09) INSPECTION COOLANT It is recommended that antifreeze/summer coolant be used with the engine. This can be purchased pre-diluted or in concentrate and mixed with 50% demineralized water. See engine owner's manual for more details....
Page 23 - Location of Female Connectors; CAUTION; Female Connector
LT12D50SA LIGHT TOWER • OPERATION MANUAL — REV. #0 (03/16/09) — PAGE 23 Light tower is placed on secure level ground with chock blocks underneath each wheel to prevent the light tower from rolling. Outriggers have been fully extended to prevent the trailer from tipping. Light tower trailer suppo...
Page 24 - OPERATION; STARTING THE ENGINE; MAST OPERATION; Deploying Outriggers
PAGE 24 — LT12D50SA LIGHT TOWER • OPERATION MANUAL — REV. #0 (03/16/09) OPERATION STARTING THE ENGINE Open the access panel door on the right side of the 1. light tower (opposite the fuel tank). Set the door latch in place to hold the door open (up). Ensure all breakers are off. 2. Inser t the ignit...
Page 25 - Lowering the Mast
LT12D50SA LIGHT TOWER • OPERATION MANUAL — REV. #0 (03/16/09) — PAGE 25 As soon as the pin clears the travel position hole, 2. release it and continue sliding out the outrigger. The pin must snap into the outrigger locking hole in the extended position. After extending all outriggers, rotate all tra...
Page 26 - Mast Operation
PAGE 26 — LT12D50SA LIGHT TOWER • OPERATION MANUAL — REV. #0 (03/16/09) OPERATION Mast Operation Figure 16. MAST CRADLE SUPPORT RETAINING PIN CRADLE LOCK/ RELEASE PIN MAST LOCK/ RELEASE PIN MAST LOCK HANDLE VERTICAL MAST WINCH MAST ROTATION LOCKING KNOB ROTATING THE MAST MAST ROTATION HANDLES MAST E...
Page 27 - TURNING ON THE LAMPS; Control Panel Circuit Breakers; NEVER; AUXILIARY OUTPUT RECEPTACLES; Auxiliary Output Receptacles
LT12D50SA LIGHT TOWER • OPERATION MANUAL — REV. #0 (03/16/09) — PAGE 27 TURNING ON THE LAMPS The main circuit breaker (30 amps), and 4 lamp circuit breakers (15 amps each) are located on the upper control panel (Figure17). Place the main circuit breaker (Figure 17) on the control 1. panel to the ON ...
Page 29 - MAINTENANCE; BASIC INSPECTION AND MAINTENANCE; Inspection/Maintenance
LT12D50SA LIGHT TOWER • OPERATION MANUAL — REV. #0 (03/16/09) — PAGE 29 MAINTENANCE BASIC INSPECTION AND MAINTENANCE See Table 7 below for a general inspection and maintenance checklist. For more detailed maintenance, refer to the engine service manual. Inspection/Maintenance Table 7. Frequency 10 h...
Page 31 - CHANGING OIL; REPLACING FUEL FILTER
LT12D50SA LIGHT TOWER • OPERATION MANUAL — REV. #0 (03/16/09) — PAGE 31 Adjust the fl ow of the water fl owing in and draining 6. out to ensure that the radiator is always full during the fl ushing operation. While fl ushing water through the system, make sure the water inlet hose does not come out ...
Page 32 - CHECK CABLE WEAR; Mast Raise/Lower Cable System; SERVICING THE MAST EXTENSION CABLE SYSTEM:; Mast Extension Cable System
PAGE 32 — LT12D50SA LIGHT TOWER • OPERATION MANUAL — REV. #0 (03/16/09) MAINTENANCE CHECK CABLE WEAR The wire rope (cable) that raises and extends the mast is a very important part of the light tower. There is one cable/hand winch system, located on the tongue of the trailer, that raises and extends...
Page 34 - MAINTENANCE — TRAILERS; ADJUSTABLE CHANNEL; Adjustable Channel; Wheel Hub Components; WHEEL HUB ADJUSTMENT
PAGE 34 — LT12D50SA LIGHT TOWER • OPERATION MANUAL — REV. #0 (03/16/09) MAINTENANCE — TRAILERS The following trailer maintenance guidelines are intended to assist the operator in preventive maintenance. ADJUSTABLE CHANNEL Your trailer may be equipped with an adjustable channel (Figure 21) that allow...
Page 35 - crawl under the trailer unless it is on fi rm; LEAF SUSPENSION; Leaf Suspension Components; Check suspension regularly.
LT12D50SA LIGHT TOWER • OPERATION MANUAL — REV. #0 (03/16/09) — PAGE 35 MAINTENANCE — TRAILERS DANGER NEVER crawl under the trailer unless it is on fi rm and level ground and resting on properly placed and secured jackstands. The possibility exists of the trailer falling thus causing equipment damag...
Page 36 - TROUBLESHOOTING; Generator Troubleshooting
PAGE 36 — LT12D50SA LIGHT TOWER • OPERATION MANUAL — REV. #0 (03/16/09) TROUBLESHOOTING Practically all breakdowns can be prevented by proper handling and maintenance inspections, but in the event of a breakdown, please take remedial action following the diagnosis based on the troubleshooting tables...
Page 37 - Engine Troubleshooting
LT12D50SA LIGHT TOWER • OPERATION MANUAL — REV. #0 (03/16/09) — PAGE 37 TROUBLESHOOTING Engine Troubleshooting Table 9. Symptom Possible Cause Solution Engine does not start. No fuel? Replenish fuel. Air in the fuel system? Bleed system. Water in the fuel system? Remove water from fuel tank. Fuel pi...
Page 39 - Lamp Loose in Socket?
LT12D50SA LIGHT TOWER • OPERATION MANUAL — REV. #0 (03/16/09) — PAGE 39 Lamp Troubleshooting Table 10. Symptom Possible Cause Solution Lamp will not start. Lamp Burned Out? Test the lamp in a fi xture which is operating properly. Replace if necessary. Lamp Loose in Socket? Inspect lamp base to see i...
Page 40 - Symptom
PAGE 40 — LT12D50SA LIGHT TOWER • OPERATION MANUAL — REV. #0 (03/16/09) TROUBLESHOOTING Table 10. Lamp Troubleshooting (continued) Symptom Possible Cause Solution Lamp starts slowly (ARC does not strike when switch is fi rst turned on) Defective Lamp? Lamp may glow for extended period of time. Repla...
Page 41 - Starting
LT12D50SA LIGHT TOWER • OPERATION MANUAL — REV. #0 (03/16/09) — PAGE 41 LAMP TROUBLESHOOTING GUIDE Use the following procedure and wiring diagram on the next page to determine which of the four lamps is not functioning: Connections Make sure that lamp #1 power cable is plugged into 1. the J1 connect...
Page 46 - LOMBARDINI ENGINE WIRING DIAGRAM
PAGE 46 — LT12D50SA LIGHT TOWER • OPERATION MANUAL — REV. #0 (03/16/09) LOMBARDINI ENGINE WIRING DIAGRAM Operating voltage: 10 to 16 VDC (30VDC max 10 sec.) A B A B
Page 47 - TRAILER GUIDELINES; COMMON CAUSES FOR LOSS OF TRAILER; DO NOT
LT12D50SA LIGHT TOWER • OPERATION MANUAL — REV. #0 (03/16/09) — PAGE 47 TRAILER GUIDELINES The following guidelines are intended to assist the operator in the operation and handling of a trailer. Safety precautions should be followed at all times when operating a trailer. Failure to read, understand...
Page 49 - TRAILER VIN TAG; Vehicle VIN Tag
LT12D50SA LIGHT TOWER • OPERATION MANUAL — REV. #0 (03/16/09) — PAGE 49 INOPERABLE BRAKES, LIGHTS OR MIRRORS Be sure that the brakes and all of the lights on your trailer are functioning properly before towing your trailer. Check the trailer taillights by turning on your tow vehicle headlights. Chec...
Page 50 - VIN Tag Location; GAWR; : The maximum gross weight that an axle cansupport.; GVWR; : The maximum allowable gross weight of the trailer; PSIC; : Some information that comes with the; VIN TAG
PAGE 50 — LT12D50SA LIGHT TOWER • OPERATION MANUAL — REV. #0 (03/16/09) VIN Tag Location Figure B. The trailer VIN Tag contains the following critical safety information for the use of your trailer. GAWR : The maximum gross weight that an axle cansupport. It is the lowest of axle, wheel, or tire rat...
Page 51 - BALL HITCH COUPLER; Ball Hitch Coupler; Gross Vehicle Weight Rating; . IT IS ESSENTIAL THAT THE HITCH BALL BE
LT12D50SA LIGHT TOWER • OPERATION MANUAL — REV. #0 (03/16/09) — PAGE 51 SAFETY CHAINS If the coupler connection comes loose, the safety chains can keep the trailer attached to the tow vehicle. With properly rigged safety chains, it is possible to keep the tongue of the trailer from digging into the ...
Page 52 - Coupling the Trailer to the Tow Vehicle (Ball Coupler); Ball Hitch Coupling Mechanism
PAGE 52 — LT12D50SA LIGHT TOWER • OPERATION MANUAL — REV. #0 (03/16/09) Rock the ball to make sure it is tightened to the hitch, and visually check that the hitch ball nut is solid against the lock washer and hitch frame. Wipe the inside and outside of the coupler. Clean and visually inspect it ...
Page 53 - Uncoupling the Ball Hitch
LT12D50SA LIGHT TOWER • OPERATION MANUAL — REV. #0 (03/16/09) — PAGE 53 Attaching Safety Chain Visually inspect the safety chains and hooks for wear or damage. Replace worn or damaged safety chains and hooks before towing. Attach the safety chains so that they: Cross underneath the coupler. See Figu...
Page 54 - PINTLE HITCH COUPLER; Pintle Hitch Coupler; Pintle Coupler and Pintle Hook; Gross; Rock the pintle eye coupler to make sure it is secured; Replace worn or damaged pintle hitch hook.
PAGE 54 — LT12D50SA LIGHT TOWER • OPERATION MANUAL — REV. #0 (03/16/09) PINTLE HITCH COUPLER A pintle eye coupler (Figure F) connects to a pintle-hook hitch that is located on or under the rear bumper of the tow vehicle. This system of coupling a trailer to a tow vehicle is sometimes referred to as ...
Page 55 - Coupling Trailer to Tow Vehicle (Pintle Coupler); TIRE SAFETY
LT12D50SA LIGHT TOWER • OPERATION MANUAL — REV. #0 (03/16/09) — PAGE 55 Raise the bottom surface of the coupler to be above the top of the pintle hitch hook. Use the tongue jackstand to support the trailer tongue. Wood or concrete blocks may also be used. Coupling Trailer to Tow Vehicle (Pintle Co...
Page 56 - Determining Load Limit of Trailer; Tighten lug nuts before each tow.; Be sure lug nuts are tight before each tow.; Trailer Tire Placard
PAGE 56 — LT12D50SA LIGHT TOWER • OPERATION MANUAL — REV. #0 (03/16/09) wrench, use a lug wrench (from your tow vehicle) and tighten the nuts as much as you can. Then have a service garage or trailer dealer tighten the lug nuts to the proper torque. Lug nuts are also prone to loosen after first bein...
Page 57 - Standard Tire Sidewall Information; Next number
LT12D50SA LIGHT TOWER • OPERATION MANUAL — REV. #0 (03/16/09) — PAGE 57 Step 2. Determine the weight of the equipment being loaded on the tow vehicle. That weight may not safely exceed the available equipment load capacity. The trailer’s Tire Information Placard is attached adjacent to or near the t...
Page 58 - Note; Speed Rating; Uniform Tire Quality Grading Standards (UTQGS); UTQGS Tire Information
PAGE 58 — LT12D50SA LIGHT TOWER • OPERATION MANUAL — REV. #0 (03/16/09) Next number : This two-digit number is the wheel or rim diameter in inches. If you change your wheel size, you will have to purchase new tires to match the new wheel diameter. Next number : This two- or three-digit number is the...
Page 59 - Tire Wear Troubleshooting
LT12D50SA LIGHT TOWER • OPERATION MANUAL — REV. #0 (03/16/09) — PAGE 59 Tires for light trucks have other markings besides those found on the sidewalls of passenger tires. LT : The “LT” indicates the tire is for light trucks or trailers. ST : An “ST” is an indication the tire is for trailer use only...
Page 60 - Start all wheel lug nuts by hand.; Check to see if the lug nuts are tight after the fi rst 10,; Wheel Lug Nuts Tightening Sequence; Lights and Signals; Tire Torque Requirements; Wheel Size; Check all lights before each tow.; use an pneumatic air gun to tighten wheel
PAGE 60 — LT12D50SA LIGHT TOWER • OPERATION MANUAL — REV. #0 (03/16/09) Wheel Rims If the trailer has been struck, or impacted, on or near the wheels, or if the trailer has struck a curb, inspect the rims for damage (i.e. being out of round); and replace any damaged wheel. Inspect the wheels for dam...
Page 61 - Trailer to Tow Vehicle Wiring Diagram
LT12D50SA LIGHT TOWER • OPERATION MANUAL — REV. #0 (03/16/09) — PAGE 61 Trailer to Tow Vehicle Wiring Diagram Figure L. TRAILER GUIDELINES
Page 62 - OPERATION MANUAL; Your Local Dealer is:; HERE’S HOW TO GET HELP; PLEASE HAVE THE MODEL AND SERIAL; UNITED STATES; CANADA
OPERATION MANUAL Your Local Dealer is: HERE’S HOW TO GET HELP PLEASE HAVE THE MODEL AND SERIAL NUMBER ON-HAND WHEN CALLING © COPYRIGHT 2009, MULTIQUIP INC. Multiquip Inc and the MQ logo are registered trademarks of Multiquip Inc. and may not be used, reproduced, or altered without written permission...
