SUTPHEN TOWERS, INC. 2012
Manual-2012
_SL75-SA75-SP70.docx
Page 22 of 55
8/31/2012
These steps must be followed in the above order to completely drain
waterway and all nozzles. This will prevent freezing in cold weather.
PLATFORM MOUNTING AND LEVELING SYSTEM
At all times, the platform must be maintained in a level position relative to the turntable. This
is accomplished by a self-contained electrical system, eliminating any hydraulic lines up the
tower. This system operates the hydraulic leveling motor. The pivot point of the platform is
above the centerline of the platform, providing a pendulum effect. This reduces the energy
required to level the platform. The system is electrically activated and is to be kept level during
any function of the tower. The pendulum effect of the platform will keep the platform level.
This is an exclusive safety feature of this tower.
MANUAL OVERRIDE:
In case of Electric and/or Hydraulic Failure
If there is an electric or hydraulic failure, two (2) needle valves are located at the end of the
boom on the right side. When these valves are open, the hydraulic cylinder will operate with
the weight in the platform. This will keep the platform level.
OPTIONAL BREATHING AIR SYSTEM
A life support breathing system is installed on the aerial platform. This system has an air
cylinder mounted in brackets on the tower base section, a shut-off valve, and a constant flow
air regulator.
Air is piped from the regulator by a heavy duty air hose through an air reel, located in the base
section of the tower to the platform.
In the platform, there are air connections available to connect fire department air mask
respirators. Boxes are mounted on the platform to store masks.
Air to the connections can be regulated from the air supply cylinder by presetting the regulator
at approximately 80 PSI. Once the air pressure is regulated, as required by the operator, turn
the air on at the air cylinder valve to provide air to the platform. The air valve should always be
turned off when not in use. Use of the air system should be determined by the personnel using
the platform.
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