Maintenance Plan Information
3-2 Manual # 42-02-2P26
Controller
Monthly
Controller General
• 8.6.1.6.3
• Clean the exterior and interior of the controller as necessary using a shop vacuum with
appropriate attachments and a soft dry cloth.
• Visually inspect electrical and mechanical connections. Correct if necessary.
• Review the controller event log for recurring faults indicative of a subsystem problem,
i.e., door systems, landing systems, car and hall calls, etc.
• Listen for bearing noise from drive cooling fan (if present). Clean/repair/replace as
required.
Air Conditioned Cabinets
• Inspect and clean drain tubes.
• Visually inspect filters. Clean/replace as required.
Load Weighers
MCE Isolated Platform
• With an empty car, verify voltage between LW+ and LW- within 0.3 to 1.0 VDC.
• Adjust per controller manual or installation instruction if required.
Lead/Acid Batteries
Wet cell, lead/acid batteries may be used to supply power to rescue or other power-loss backup
systems. Replace battery as necessary, generally every three to five years.
• Check connections for corrosion. Remove, clean, and replace as necessary.
• Visually inspect battery bin for signs of acid leakage. If leakage has occurred, remove bat-
tery; clean and/or refinish bin; replace battery.
• Using a voltmeter, verify battery voltage is not below rated output.
Car
• 8.6.4.16 Stopping Accuracy
• Verify car stops without releveling, within +/- 0.25 inches of level at all floors in both
up and down directions where applicable.
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