OPERATOR’S SECTION
L-B B5L0082/PAT 031-300-190-015 REVISION D 04/15/99
37
5. OPERATIONAL CHECKS
After completing calibration do the following operational checks to verify displayed values.
These operational checks should be complete at anytime there is an indication of
inaccuracy.
NOTE: We recommend completing all operational checks before correcting calibration data.
5.1 Check the angle of the main boom and compare it with the measure value. It should be
±
1
°
.
If the angle is incorrect complete Sections 4.1, 4.2, 4.3 and 4.6.
NOTE: Use the select button to specify crane configuration before performing the following
checks. See Operators Handbook 056 065 08 0006.
5.2. Check the radius displayed and compare it with the a measured radius. The radius is a
horizontal measurement from the crane centerline of rotation to the center of the hook
block. The displayed radius should be equal to or greater than the measured radius by
10%. For example, if the measured radius equals 15ft then the displayed radius should be
15ft to 16.5ft. If displayed value is incorrect, verify the Rad Offset measurement taken in
3.3.B and complete Sections 4.1, 4.2, 4.3, and 4.6.
5.3. Check the total load displayed by picking the known test load. This will require picking a
load for each force sensor, KMD1 and KMD2, if applicable. The displayed load should be
equal to or greater than the known load by 10%. For example, if the known load equals
12,000lbs then the displayed load should be 12,000lbs to 13,200lbs. If displayed value is
incorrect, complete Sections 4.1, 4.2, 4.3, and 4.9 for KMD1 and/or 4.10 for KMD2.
NOTE: To comply with the SAE J376 standards the test load must be to a known accuracy of
±
1%.
