SUTPHEN TOWERS, INC. 2012
Manual-2012
_SL75-SA75-SP70.docx
Page 30 of 55
8/31/2012
Procedure: (Models SP70, SA75 & SL75 – black waterways)
1. Set up truck for tower operation.
2. Raise and rotate ladder off the side of truck.
3. Fully extend ladder out.
4. Use a clean towel and wipe off the outer sections of the waterway tubes.
5. Apply Dexron III Transmission Oil to a clean towel and wipe the oil on the entire length of
each waterway tube, except for the main outside large tube.
6. Retract ladder fully and return ladder to cradle.
WATERWAY NOZZLE
Refer to Nozzle Manufacturer’s instructions for more detailed information.
The gears must be kept greased at all times. Low-Temp Lubriplate grease should be applied to
the grease fittings annually. Grease should be applied until visible through the swivel plugs.
PLATFORM MOUNTING AND LEVELING SYSTEM
The platform is suspended in the yoke, anchored on each side with special self-alignment
bearings and high tensile steel bolts. The bolts holding the bucket to the yoke have special
locking devices to assure positive safe operation.
The platform is maintained in a level position relative to the turntable at all times. This is
accomplished by a self-contained hydraulic system, eliminating any hydraulic lines up the
tower.
To properly check hydraulic fluid level in the bucket leveling system, raise the ladder to full
elevation. Shut off the upper power switch. Lower the ladder to horizontal position. Remove
vent plug on reservoir tank and check, add if needed Dexron III (the hydraulic fluid). Raise the
ladder, turn on the “Upper Power Switch” and let the bucket level.
This system operates two (2) hydraulic cylinders which are attached to the platform supporting
yoke and to the platform directly below the supporting pivot point of the platform. The
attached pivot point of the platform is above the center line of the platform, providing a
pendulum effect, reducing extreme amounts of energy required to level the platform. The
system is electrically activated and kept level during any function of the tower. A manual
emergency override is provided in the leveling system. Should the leveling system fail for any
reason, two valves are located at the end of the boom on the yoke side plate directly behind
the platform. By opening these valves, fluid is permitted to flow freely from one side of the
leveling cylinder piston to the other. The weight in the platform and the pendulum effect of the
To Next Page
Loading...