Beam Travel Adjust; Beam Assembly Adjustments - Unitek MICROPULL IV MP4/115 Operation And Maintenance Manual

CHAPTER 3: OPERATING INSTRUCTIONS
2 Use the screwdriver end of the hook insertion tool and slowly turn the zero adjust potentiometer on the
Beam Module, figure 3-4, clockwise until the minus sign in front of the PEAK FORCE reading lights.
Then, turn the zero adjust counterclockwise until the minus sign just goes out.
Beam calibration
potentiometer (R1)
Beam support
Damping screw

Beam Travel Adjust

CAUTION: Move the device holder so that it is not under the hook before adjusting the beam travel to
eliminate the possibility of bending the hook.
1 Push The Control Lever down. The beam arm is now in its lowest position. The relative position of the
hook can be changed by using the five sets of mounting holes in the beam
2 Raise the Control Lever. The hook should move 1/4-inch vertically.
3 Actuate the footswitch, if necessary. Return the Control Lever to its lowest position.
4 With the BEAM TRAVEL control at MIN turning the DOWNSTOP control to UP should raise the hook
position by about 1/4 inch.
3-4
Zero adjust
potentiometer (R6)
Hook access
cover
Figure 3-4. Beam Assembly Adjustments
®
MICROPULL IV WIRE BOND PULL TESTER
Beam
Test staus
indicator (red)
Tape cable
connector
Beam amplifier
PCB (A1)
990-180