Operator`s manual

The Water Tower is located at the tip, or fly, of ladder Section 3. Movement of the Water Tower Nozzle is
provided by a self-contained Power Pack (No. 3). Direction of movement and type of water delivery are
controlled by two sets of switches, one located at the tip of ladder Section 3 and the other on the Ladder
Control Console (No. 2). Cabling for the Power Pack and control switching travels up the right side of the
ladder in the same manner as the 110 VAC Cable on the opposite side, as previously described. 12 VDC
is provided from the buss bar (No. 5) to the Solenoid (No. 4) for the elements at the end of the ladder.
The Power Pack (No. 3) is an electric, hydraulic pump which provides movement of the Water Tower
nozzle in elevation, sweep and pattern in response to electrically controlled valves (No. 1). The valves
are operated by either the Ladder Control Console switches or the switches at the ladder fly (No. 2).
6.4.7 Ladder Circuits Above the Turntable
For the wiring diagram of circuits above the Turntable, refer to Figure 6-6. 12 VDC current is supplied
from the batteries through Contact Rings (No. 10) in the Turntable to the buss bar (No. 36). The Current
Regulators (13) and (14) are located in the compartment under the Ladder Control Console. The right
Current Regulator (see Figure 6-6-1, number 2) is part of the ladder circuitry controlling ladder elevation
and depression. The left Current Regulator (see Figure 6-6-1, number 1) is part of the ladder circuitry
controlling ladder rotation, extension and retraction. Refer to Part 2, Volume 3, tab 28 for the Description,
Adjustment Set-up and Adjustment Procedure of the regulators. Part 2, Volume 3, tab 28 also includes
commercial data for the Joysticks (1), (2) and (3).
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