Product Manual
Table Of Contents
- Section 1: Introduction and Safety
- Section 2: General Information
- Section 3: Operation
- Unit Setup
- Raising the Mast—Manual Winch
- Raising the Mast—Electric Winch (If Equipped)
- Raising the Mast—Power Zone- DLA (If Equipped)
- Prestart Checklist
- Starting the Unit (Key Switch Models)
- Preparing for Start-Up (Power Zone–DLA)
- Manually Starting the Unit
- Light Operation (Key Switch Models)
- Light Operation (Power Zone– DLA) (If Equipped)
- Engine Derating
- Wet Stacking
- Dusk to Dawn Sensor (Power Zone–DLA) (If Equipped)
- Customer Convenience Receptacles
- Shutting Down the Unit
- Shutting Down the Unit (Power Zone–DLA) (If Equipped)
- Lowering the Mast—Manual Winch
- Lowering the Mast—Electric Winch (If Equipped)
- Lowering the Mast—Power Zone- DLA (If Equipped)
- Positive Air Shutdown (PAS) (If Equipped)
- Lower Radiator Hose Heater (If Equipped)
- Tandem Tow (If Equipped)
- Telemetry (If Equipped)
- Spark Arrester (If Equipped)
- Heated Fuel Filter (If Equipped)
- Towing the Unit
- Lifting the Unit
- Tying Down the Unit
- Section 4: Maintenance
- Section 5: Troubleshooting
- Section 6: Wiring Diagrams
- Mast Junction Box Wiring and Light Connections
- AC Wiring—MLT6SKDS
- AC Wiring—MLT6SMDS
- AC Wiring—MLT6SMDS With Power Zone (If Equipped)
- AC Wiring—MLT6SKDS With Power Zone (If Equipped)
- DC Wiring—MLT6SMDS
- DC Wiring—MLT6SMDS With Power Zone (If Equipped)
- DC Wiring—MLT6SKDS
- DC Wiring—MLT6SKDS with Power Zone (If Equipped)
- DC Wiring—Heated Fuel Filter (If Equipped)—MLT6SMDS
- DC Wiring—Heated Fuel Filter (If Equipped)—MLT6SKDS
- DC Wiring—Electric Winch (If Equipped) with Standard Controller
- Trailer Lights
- DC Wiring—Electric Winch with Power Zone Controller (If Equipped)
30 Owner’s Manual for Mobile Light Tower
Operation
aligned and the metal stop tabs are touching.
c. Tighten the mast rotation knob.
Lowering the Mast—Electric
Winch (If Equipped)
NOTE: On key switch models, key must be in RUN to
operate electric winch.
1. Press and hold the upper winch control switch
downward to collapse the mast to its lowest
position. Verify the electrical cord does not get
caught in, or pinched by, the mast while it is being
lowered.
2. Shut down the engine. See Shutting Down the
Unit.
3. If the unit is going to be moved, rotate the mast so
the lights face the rear of the unit. To rotate the
mast:
a. Loosen the mast rotation knob.
b. Rotate the mast until the white arrows are
aligned and the metal stop tabs are touching.
c. Tighten the mast rotation knob.
NOTE: The electric winch models are equipped with a
safety limit switch. This switch disconnects power to the
winch after the mast is completely raised or lowered. This
prevents the cable from continuing to unwind and becom-
ing entangled around the winch drum.
IMPORTANT NOTE: Contact a GMASD immediately
if the mast hangs up or the winch cable develops
slack.
NOTE: If the light tower is not operational, and the
batteries do not have enough power to lower the mast, it
may be necessary to lower the mast manually. Always
attempt to recharge the batteries and lower the mast
electrically before proceeding.
Manually Lowering the Mast
IMPORTANT NOTE: Do not use this procedure
unless it is absolutely necessary. Frequent use of
this procedure could damage the motor shaft.
1. See Figure 3-16. Remove the motor cover (A).
Figure 3-16. Manually Lowering the Mast
2. Attach a drill chuck firmly to the exposed motor
shaft (B).
3. Using the drill, slowly rotate the motor shaft
counterclockwise to lower mast.
4. Detach the drill chuck and install the motor cover
after the mast is completely lowered.
Lowering the Mast—Power Zone-
DLA (If Equipped)
NOTE: Units with the Power Zone-DLA do not have a
mast switch for the electric winch.
1. Verify Power Zone-DLA controller is powered on.
2. Press the up/down arrows next to the controller
display until the mast screen is shown. See Figure
3-17.
Figure 3-17. Lowering the Mast Screen
3. Press the SELECT button; the UP/DOWN on the
display will begin to flash. Press the down arrow as
needed until the mast is lowered.
4. Press SELECT again to exit the mast control
screen.
WARNING
Personal Injury. Stop immediately if the mast hangs
up or the winch cable develops slack. Excess slack
could cause the mast to collapse, resulting in personal
injury or equipment damage.
(000265)
002832
A
B
004765