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CHAPTER 2
AC/DC POWER DISTRIBUTION
2.1 LOCKOUT AND/OR TAGOUT SYSTEM PROCEDURE
1. Notify all affected employees that a lockout or tagout system is going to be utilized and why. The authorized em-
ployee should know the electrical power the machine uses and it’s hazards.
2. If the machine or equipment is running, shut it down by the normal stopping procedure (depress the stop button,
open toggle switch, etc.)
3. Use appropriate devices to isolate the equipment from the power source(s). Stored energy (such as that in springs,
elevated machine members, rotating fl ywheels, hydraulic systems, and air gas, steam or water pressure, etc.) must be
dissipated or restrained by methods such as repositioning, blocking, bleeding down, etc.
4. Lockout and/or tagout the energy isolating devices with individual lock(s) or tag(s).
5. After ensuring that no personnel are exposed, and as a check on having disconnected the energy
sources, operate the push button or other normal operating controls to make certain the equipment will not operate.
CAUTION: RETURN OPERATING CONTROL(S) TO “NEUTRAL” OR “OFF” POSITION AFTER THE TEST [DE-E-
NERGIZED STATE].
6. The equipment is now locked out or tagged out.
2.2 ELECTRICAL REQUIREMENTS
NOTE:
ANY ELECTRICAL WIRING MUST BE PERFORMED BY LICENSED PERSONNEL.
ALL SERVICE MUST BE PERFORMED BY AN AUTHORIZED SERVICE TECHNICIAN.
Check on the plate of the machine that the electrical specifi cations of the power source are the
same as that of the machine.
NOTE:
THE BALANCER PERFORMS A SELF-TEST ROUTINE ON START-UP. THERE IS A
DELAY OF SEVERAL SECONDS BEFORE THE MONITOR IS ACTIVATED.
NOTE:
ANY ELECTRICAL OUTLET INSTALLATION MUST BE VERIFIED BY A LICENSED
ELECTRICIAN BEFORE CONNECTING THE BALANCER.
NOTE:
ENSURE THAT THE OUTLET HAS AN AUTOMATIC GROUND FAULT CIRCUIT BREAKER
WITH A DIFFERENTIAL CIRCUIT SET AT 30 MA.
2.3 AC THEORY OF OPERATION
Always use the “One Hand Rule” when working with AC voltages by keeping one hand in your pocket or behind your
back. Before removing wires from the Balancer, always verify that the unit is “OFF”. Turn off the Main Power Switch on
the back and unplug the AC power cord from the AC outlet.
AC DISTRIBUTION
The balancesr requires 230VAC for proper operation. The AC voltage (+/-10%) comes in through a Power Entry Module
switch and immediately is sent to the IBP box. The earth ground directly connects to the balancer chassis.
DRIVE MOTOR
The drive motor for the unit receives AC power via two relays mounted directly to the Power Supply section of the IBP
box. To keep arcing at the relays to a minimum, the relays are switched in synchronism. The switching times of the
relays are determined individually and taken into consideration for optimum pull-in times. The motor also utilizes a ca-
pacitor to generate a suffi cient amount of torque during clamping, on wheel clamp machines, acceleration and braking
SM HOF GEODYNA 7600 Rel.D
AC DISTRIBUTION
The balancer requires 115VAC (+/-10%) for proper operation. The AC Power routes to the “ON/OFF” Switch of the
power supply inlet assembly. Then Hot and the Neutral outlets are routed to a step-up transformer to be converted into
230VAC, while the ground wire is directly connected to the chassis. The 230VAC transformer outlet wires go to the
IBP box.
