Part No. 824982 Genie TZ-50 3 - 13January 2016 Section 3 • Scheduled Maintenance ProceduresCHECKLIST B PROCEDURESB-2Inspect the Electrical WiringMaintaining electrical wiring in good condition isessential to safe operation and good machineperformance. Failure to fi nd and replace burnt,chafed, corroded or pinched wires could resultin unsafe operating conditions and may causecomponent damage.Electrocution hazard. Contactwith hot or live circuits couldresult in death or serious injury.Remove all rings, watches andother jewelry.1 Inspect the following areas for burnt, chafed,corroded and loose wires:• Turntable area• Ground controls• Power unit wiring2 Turn the key switch to ground control and pullout the red Emergency Stop button to theon position at both the ground and platformcontrols.3 Raise the secondary boom until the platform isapproximately 10 feet / 3 m off the ground.4 Inspect the boom storage area for burnt, chafedand pinched cables.5 Lower the boom to the stowed position and turnthe machine off.6 Inspect the following areas for burnt, chafed,corroded, pinched and loose wires:• Boom to platform cable harness• Primary and secondary booms9 Connect the battery charger to a properlygrounded 115V/60Hz or 230V/60Hz singlephase AC power supply.Result: The charger should operate and begincharging the batteries.Result: Simultaneously, the charger alarmsounds and the LED's blink one time. Correctthe charger connections at the fuse and battery.The charger will then operate correctly andbegin charging the batteries.Result: Simultaneously, the charger alarmsounds and the LED's blink two times. Theinput voltage is too low or too high. Correct thevoltage issue. The charger will then operatecorrectly and begin charging the batteries.Result: Simultaneously, the charger alarmsounds and the LED's blink three times. Thecharger is overheated. Allow the charger tocool. The charger will then operate correctlyand begin charging the batteries.Note: If you have any further questions regardingthe battery charger operation, please contactGenie Product Support.