Calibration and Adjustment 5-9
5.9 Z-head Counterbalance Force Adjustment
The Z-head Counterbalance Force prevents the Z-head from crashing down upon disengagement of the
motor. There are three settings to accommodate various payloads.
To adjust the Z-head counterbalance (
Figure 5-11):
1. Using a 3 mm hex key, loosen the screw on the lower Z-spring.
2. Move screw down to increase tension.
! If necessary, move screw up to decrease tension.
To test counterbalance tension:
1. Place valve on Z-head.
2. Move Z-head to middle of dispense area.
3. Open machine hood.
! Z-head should not drop more the 25.4 mm (1-inch).
4. Readjust tension if necessary.
Item Description
1 Z-spring screw
Figure 5-11 Z-head Counter Balance Force Adjustment
1
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