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Performing function tests is a crucial part of safe work practices before operating any mobile elevating work platform (MEWP) because function tests are designed to discover malfunctions before the MEWP is put into service. A best practice for safe work at height is for the MEWP operator to follow the step-by-step instructions listed in the manufacturer’s supplied operator’s manual to test all machine functions prior to each shift. For example, Genie operator’s manuals contain specific, detailed instructions on what tests to perform, as well as how to perform the tests that need to be completed.

• Test emergency stop at the ground controls
• Test the up/down functions at the ground controls
• Test emergency lowering at the ground controls
• Test emergency stop at the platform controls
• Test emergency lowering from the ground controls
• Test the horn at the platform controls
• Test the function enable switch and the up/down functions at the platform controls
• Test the drive function button at the platform controls
• Test the steering at the platform controls
• Test drive and braking at the platform controls
• Test tilt sensor operation from the ground position
• Test elevated drive speed at the platform controls
• Test the pothole guards
• Test oscillating axle –if equipped
• Test the outriggers function –if equipped 

• Test emergency stop at the ground controls
• Test the tilt sensor at the ground controls
• Test machine functions at the ground controls
• Test auxiliary controls at the ground controls
• Test emergency stop at the platform controls
• Test the horn at the platform controls
• Test the foot switch at the platform controls
• Test machine functions at the platform controls
• Test the steering at the platform controls
• Test drive and braking at the platform controls
• Test limited drive speed at the platform controls
• Test the lift drive select function
• Test the drive enable system
• Test auxiliary controls from the platform controls
• Test oscillating axle –if equipped
• Test aircraft protection package –if equipped
• Test the Genie Lift Guard Contact™ Alarm–if equipped

Operators should always read the MEWP’s operator’s manual, provided by the equipment manufacturer, to learn more on how to perform these tests. It is important that operators always use the appropriate operator’s manual for the MEWP they are inspecting.