GREER COMPANY
Crane Systems
GREER COMPANY 1918 East Glenwood Place, Santa Ana, CA 92705 TEL: (714) 259-9702 FAX: (714) 259-7626
MicroGuard® RCI 510/400 CALIBRATION MANUAL PN W450189A 09/09/02
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COMMAND 03 ZERO - EXTENSION SENSOR
The extension reel, fitted with 130 ft. of shielded 2-wire cable, cannot be shortened to
accommodate varying boom lengths.
IMPORTANT:
Ensure that the boom is in a horizontal position when performing this routine.
COMMAND 03 ZERO PRETENSION ROUTINE – EXTENSION SENSOR
1) Fully retract all boom sections.
2) Remove the clamp on the reel cable and allow it to slowly rewind onto the reel until there is
no pretension.
3) Continue to rewind the reel until the distance between the attachment point and the end of
the cable is approximately 12 ft. Due to the clutch on the reel shaft, there will now be no
pre-tension.
4) Pull the cable toward the anchor point, continuing until the end of the cable is 3 ft. Beyond
the anchor point.
5) Secure the cable to the anchor point with at least 4 wraps, ensuring that there is sufficient
cable at the boom head to connect to the anti two-block switch, which is terminated in a
3-pin plug.
6) Manually turn the large gear on the potentiometer fully counterclockwise. Then, advance the
gear clockwise three clicks.
7) Calibrate the zero of the sensor, as shown on the next page.
