33
When installing the support arm on the crane bridge beam, note that the support arm
installing pitch varies in each case, shown as in Figure 3-16, depending upon the width of the crane
bridge beam flange.
Flange Width of
Bridge Beam
Bolt
Position
Figure 3-16
3.0 to 5.5 inches
Flange
width
A
5.5 inches and above
Flange
width
B
3.5
Crane Wiring
(MOTORIZED ONLY)
HAZARDOUS ELECTRICAL POWER IS PRESENT IN THE END TRUCK MOTOR,
IN THE SUPPLY OF ELECTRICAL POWER TO THE END TRUCK MOTOR, AND IN THE
CONNECTIONS BETWEEN COMPONENTS.
Before performing ANY wiring installation or maintenance on the equipment, de-energize the electrical
supply to the equipment, and lock and tag the supply device in the de-energized position. Refer to ANSI
Z244.1, “Personnel Protection - Lockout/Tagout of Energy Sources.”
Only trained and competent personnel should install, inspect, and maintain this equipment. ALWAYS
turn off power source or breaker switch to prevent electric shock before beginning the wiring process
Install the crane system electrical wiring as shown on the
wiring diagram provided
.
The motorized End Trucks covered by this Manual require the motor brake rectifier
(within motor junction box) to receive 180 to 293 volts of single phase, AC voltage, to release the brake.
The brake rectifier circuit must be modified based upon power supply voltage and motor control means.
To ensure the brake opens without malfunction, reference provided diagrams 61176 or 61175 for motor
and rectifier wiring.
If Crane Wiring was provided with the End Trucks, install the electrical wiring as shown on the provided
crane systems wiring diagram.
