4 - 20 Genie S-80 & Genie S-85 Part No. 34032Service Manual - First EditionSection 4 - Scheduled Maintenance ProceduresTABLE B PROCEDURESB-14Test the Emergency Stop ButtonsProperly functioning Emergency Stop buttonsare essential for safe machine operation. Animproperly operating Emergency Stop buttonwill fail to shut off power and stop all machinefunctions, resulting in a hazardous situation forground and platform personnel.As a safety feature, selectingand operating the ground controlswill override the platform controls,including the Emergency Stopbutton.1 Start the engine from the ground controls.2 Push down the Emergency Stop button to theOFF position.Result: The engine should shut off and nomachine functions should operate.Deutz Diesel models: All functionsshould stop immediately. Theengine will shut off after 2 to 3seconds.3 Start the engine from the platform controls.4 Push down the Emergency Stop button to theOFF position.Result: The engine should shut off and nomachine functions should operate.The ground Emergency Stopbutton will stop all machineoperation, even if the key switchis switched to platform control.B-15Test the Ground Control OverrideA properly functioning ground control override isessential to safe machine operation. The groundcontrol override function is intended to allowground personnel to operate the machine from theground controls whether or not the EmergencyStop button on the platform controls is in the ON orOFF position. This function is particularly useful ifthe operator at the platform controls cannot returnthe boom to the stowed position.1 Push in the platform Emergency Stop buttonto the OFF position.2 Start the engine from the ground controls.3 Operate each boom function through apartial cycle.Result: All boom functions should operate.B-16Test the Platform Self-levelingAutomatic platform self-leveling throughoutthe full cycle of boom raising and lowering isessential for safe machine operation. Theplatform is maintained at level by the platformleveling slave cylinder which is controlled by themaster cylinder located at the base of the boom.A platform self-leveling failure creates an unsafeworking condition for platform andground personnel.1 Start the engine from the ground controls, thenextend the axles and lower the boom into thestowed position.2 Adjust the platform to a level position using theplatform leveling switch.3 Raise and lower the boom througha full cycle.Result: The platform should remain level atall times to within ±5 degrees.
