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LT12 SERIES LIGHT TOWER • OPERATION MANUAL — REV. #12 (01/20/09) — PAGE 21
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 brief explanation of each
control or indicator.
Internal Cabinet Light Switch 1. — This switch controls
the internal cabinet light for the light tower control
panel. When the cabinet door is raised, the light will
automatically come on. When the cabinet door closes,
the switch is depressed and the light turns off.
Internal Cabinet Light 2. — Provides illumination for
the LT12 control panel during nighttime operation.
The light is automatically activated when the cabinet
door is raised.
Hour Meter 3. — This digital hour meter indicates the
number of hours machine has been in use.
Main Circuit Breaker 4. — A double-pole 25 amp, ON/
OFF circuit breaker which protects the 240 VAC twist-
lock receptacle from overload. In addition it allows
voltage to be supplied to the GFCI receptacle and 15
amp breakers.
GFCI Receptacle Circuit Breaker 5. — A single-pole, 15
amp, ON/OFF circuit breaker which protects the GFCI
receptacle from overload.
Lamp Circuit Breakers 6. — A single-pole, 15 amp, ON/
OFF circuit breaker for each of the four lamps.
Air Filter Alarm Indicator 7. — This indicator
flashes (Perkins) or lights (Lombardini/
Deutz) when a blockage or problem with the
air fi lter is detected.
Water Temperature Alarm Indicator 8. — This indicator
flashes (Perkins) or lights (Lombardini/
Deutz) when the water temperature becomes
too hot for normal engine operation. On
Lombardini/Deutz engines, the unit will shut
down and the indicator light will stay on.
Oil Pressure Alarm Indicator 9. — This alarm light
flashes (Perkins) or lights (Lombardini/
Deutz) when the oil pressure has fallen
too low for normal engine operation. On
Lombardini/Deutz engines, the unit will shut
down and the indicator light will stay on
PreHeat Indicator 10. — Lights when the
ignition key is turned to the ON position
indicating that the glow plugs are warming
up. When the light goes off, the engine is
ready for starting. If the light is fl ashing, a
low battery charge is detected (Perkins).
Ignition Key Switch 11. — Insert key into
ignition switch and turn clockwise to the ON
position to warm the glow plugs. When pre-
heat indicator light goes OFF, turn the key to
the START position. Release key when
engine starts.
Normal Operation Indicator 12. — This
indicator (green lamp) lights when the engine
is functioning normally.
Alternator Alarm Indicator 13. — This indicator
lights when the engine has shut down
because the electrical charging system is
not working properly.
OK