SUTPHEN TOWERS, INC. 2012
Manual-2012
_SL75-SA75-SP70.docx
Page 23 of 55
8/31/2012
RETURN AERIAL TO TRAVEL POSITION
RETRACT THE TOWER
Retract the tower fully by pulling the left control lever, located at the control box, outward.
If the waterway has been used before retracting the tower, the nozzle and
waterway drain must be open to avoid compressing the water in the
waterway. Allow enough time for the waterway to drain before retracting
the tower. Failure to do so can result in serious damage to the waterway.
ROTATE THE TOWER
To rotate the tower to the left, push the center control lever, located at the control box,
inward. To rotate the tower to the right, pull the control lever, outward. To store the aerial,
rotate the tower until it is properly aligned to lower into the cradle.
The trucks are equipped with an alignment light. This light is an amber light
located at the left front corner of the hose bed. It will light when the tower is in
position to come down directly in the middle of the support cradle.
Aerial towers are also equipped with alignment arrows. One arrow is affixed to
the turntable and the other arrow is affixed to the treadplate deck. They are
located behind the control box.
Rotate the tower until the points of both arrows align. The tower is now in
position to lower into the support cradle.
LOWER THE TOWER
At engine idle - only.
After the tower is lowered into the cradle, continue to hold the control lever in the lower
position for a few seconds. Then, release the lever to permit a pilot check valve in the hydraulic
circuit to trip and lock at its preset pressure. This locks the tower in the cradle for travel.
REMOVE WHEEL CHOCKS
Always remove the wheel chocks before releasing the stabilizers. Failure to
do so could result in wedging the chocks tightly against the tires making them
unremovable. Remove safety pins on stabilizers.
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