3 - 48 S-60 • S-65 Part No. 77828December 2005Section 3 • Scheduled Maintenance ProceduresREV ED-9Calibrate the Platform OverloadSystem (if equipped)Genie specifications require thatthis procedure be performed every1000 hours of operation or yearly.Yearly calibration of the platform overload systemis essential to safe machine operation. Continueduse of an improperly calibrated platform overloadsystem could result in the system failing to sensean overloaded platform. The stability of themachine is compromised and it could tip over.Perform this procedure with themachine on a firm, level surface.1 Level the platform.2 Determine the maximum platform capacity.Refer to the machine serial plate.3 Using a suitable lifting device, place anappropriate test weight equal to that of themaximum platform capacity at the center of theplatform floor.Determine the limit switch trigger point:4 Gently move the platform up and down by hand,so it bounces approximately 2.5 to 5 cm. Allowthe platform to settle.Result: The overload indicator light and thealarm is on. Slowly tighten the load springadjustment nut by turning it clockwise just untilthe overload indicator light and alarm turns off.The platform will need to be movedup and down and allowed to settlein between adjustments.There may be an approximate 2second delay before the overloadindicator light turns on and thealarm sounds.Result: The overload indicator light andalarm is off. Slowly loosen the load springadjustment nut by turning it counterclockwisejust until the overload indicator light and alarmturn on.There may be an approximate 2second delay before the overloadindicator light turns on and thealarm sounds.The platform will need to be movedup and down and allowed to settlein between adjustments.CHECKLIST D PROCEDURES
