MAN -
PLC
Lever Arm Tester- REV: 01 | D. Installation
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5. Install the lever arm onto the tester with the V-blocks mated to the knife-edges. Be careful not to damage
knife-edges or v-blocks.
6. Check the lever arm mid-positioning, side by side, by comparing the knife-edges and V-blocks. The lever
arm should pivot freely.
7. Install the safety guards and tighten bolts.
a. Adjust the bolt to allow the arm to freely move. Check through the full movement range.
b. Tighten the jam nut to lock the bolt in place.
c. Re-check step “a”.
8. Check position and operation of shutdown actuator.
a. Install shutdown floating actuator in lever arm above proximity switch.
b. Adjust nuts to provide 0” clearance over the switch with the weight pan side of the lever arm
down all the way.
9. On testers equipped with drawheads for automatic beam leveling:
a. Install automatic beam level floating actuator in lever arm above proximity switch.
b. Adjust nuts to provide 0.5-inch clearance over the switch with the lever arm level.
Figure D.1: Lever Arm Assembly (Dual Ratio Shown)
V- Blocks
Safety Guards
Knife Edge
Counterweight
Locking Screw
Counterweight
(Between Side Plates)
Counterweight
Positioning
Screw
Auto-Leveling
Actuator
