Multiquip MLT25 Raising the Mast, Lowering the Mast, Stowing the Mast to Horizontal Position

operation

Raising the Mast

Once the tower mast has been locked into its vertical position, the mast can now be raised. The tower allows the lamps to be extended upwards in excess of 30 feet.

Refer to Figure 7 for location of components.

1.Turn the mast extension winch clockwise and observe that the mast begins to extend upwards.

2.Continue turning the winch in the clockwise direction until the desired height has been reached.

3.Release the winch. This winch is of the self-locking type. The tension on the cable will keep the mast in place.

Lowering the Mast

1.Turn the mast extension winch counterclockwise, and observe that the mast begins to lower.

2.Continue turning the winch counterclockwise until the mast has been fully retracted (slack in the cable).

Stowing the Mast to Horizontal Position

Refer to Figure 7 for the location of components:

1.Remove the mast lock/release pin to allow the mast section to be lowered to the horizontal position. Pull out the mast lock handle to unlatch.

2.Turn the vertical mast winch counterclockwise and observe that mast begins to approach the horizontal position. The mast lock handle can now be released.

3.Continue turning the vertical mast winch in the counterclockwise direction. As the mast approaches the mast cradle support, pull the retaining pin and then the cradle lock/release pin to allow the mast to rest in the cradle.

4.Once the mast is resting in the mast cradle support, insert the cradle lock/release pin and secure with retaining pin to keep mast in place.

Rotating the Mast

To change the direction that the lamps are facing, the mast can be rotated.

Refer to Figure 7 for the location of components.

1.With the mast in the deployed position (vertical), unscrew the mast rotation locking knob to release the mast for rotation.

2.Grip the mast rotation handles and rotate the mast until the lamps are facing the desired direction.

3.When the lamps are facing the desired direction, tighten the mast rotation lock knob to lock the mast in place.

Turning On the Lamps

Three lamp circuit breakers (15 amps each) are located on the front of the light tower to turn the lamps on and off.

The lamps can be turned on with the voltage selector in three different positions. See Table 3 for the different settings.

Table 3. Lamp Settings

Voltage	Voltage	Circuit
Selector			Lamps
	Regulator	Breaker
Switch			(ON)
	Setting	(ON)
Setting
		CB1	1 & 3
1 PHASE
	240V	CB2	4 & 6
240/120
		CB3	2 & 5
3 PHASE	208V	CB1	1, 2, & 3
240/139
		CB2	4, 5, & 6
3 PHASE	480 V
		CB3	N/A
480/277

1.Before turning on the lamps, make sure that main circuit breaker on the generator control panel and the circuit breakers shown in Figure 8 are all in the off position.

ON
OFF
CB1	CB2	CB3

Figure 8. Lamp Circuit Breakers

page 20 — MLT25 sERIES LIGHT TOWER • operation manual — rev. #0 (11/28/12)