Telescopic Boom Series
Models SJ61T & SJ66T
194312
December 2007 Page 227
Section 5 - Procedures Service and Maintenance
Calibration of Load Sensing System (with “Teach In" Handset)
WARNING
Do not interrupt system power and rest your hand or foot on platform during this procedure.
1. Ensure aerial platform is on rm level ground.
2. Fully “ " retract and “ " lower boom.
3. Turn engine “ ” off.
4. Ensure both “ " emergency stops are pulled out and platform engine enable switch is in “ " on position.
ResultOverload indicator light and audible alarm pulse two times.
5. Ensure platform is unloaded and is free from any surface contact.
6. Remove cap from load cell interface connector.
7. Connect “Teach in" handset to interface connector.
ResultThe “T" label on handset will ash at a high frequency of 5Hz. If not, recheck that power is on and
handset is properly connected.
WARNING
Do not disconnect handset at any point of the following steps until instructed.
8. On “Teach in" handset, depress “4" button for four seconds.
ResultThe “T" label on handset will light on constantly and then ash at a lower frequency of 1.25Hz.
9. Add a test load of 244kg onto the center of platform.
10. Depress “4" button for four seconds.
ResultThe “T" label on handset will go from ashing to constantly on.
11. Disconnect “Teach in" handset from interface connector.
12. Wait for four seconds and then add a test load exceeding 244kg to test load sensing system.
ResultOn platform control console, the overload light will ash and an audible alarm will pulse.
13. Remove test load from platform.
ResultGreen power LED is ashing, orange LED is ON, red alarm LED is OFF, audible alarm is OFF and
red error LED is OFF.
14. Re-cap interface connector and place provided “calibrated" label over interface connector.
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