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Calibration
Block Positioning
Before calibrating the instrument, it is necessary to check the position of the
ring and block. The contact area must be centered within the concave portion
of the block.
1. Thoroughly clean the ring, block, and block holder with acetone.
Do not touch the metal contact surfaces with bare hands.
2. Install a new lubricity ring onto the main shaft.
3. Tighten the retainer nut with the wrench.
4. Using a black marker, coat the surface of the block.
5. Place the marked block into the block holder.
6. Set the speed to 60 rpm and apply 150 in-lb of force for ten seconds. Do
not immerse in water.
7. Release pressure on the block and stop the motor.
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