Maintenance & Service
Routine maintenance practice, survey and acceptance tests, and keeping documentation defensible.
Entries
- Acceptance and periodic tests: what is measured, and what proves it
The test sequence a new or altered unit must survive and the recurring tests an existing unit must keep passing - with the records that make… - Building a maintenance program that survives the audit
A risk-based maintenance schedule: what to examine, how often, what to record, and how to structure the work so defects are found before they become incidents. - Counterweight, compensation and balance: why load matters to diagnosis
What the counterweight and compensation system do, how balance changes the symptom you see, and how to test load-dependent faults deliberately. - Entrapment response: the procedure, the communication and the paperwork
What to do when people are in a stopped car - the sequence that keeps them safe, the information the responder needs, and the follow-up that… - Hydraulic elevators: the faults that only appear when the oil is hot
Jack, pump, valve and oil temperature - how a hydraulic unit fails differently from a traction unit, and the systematic checks that find drift, sinking and… - Machine-room-less (MRL) elevators: designing maintenance access before you need it
What MRL changes for service work - access, rescue, heat, and the spare-part strategy - and how to keep an MRL unit serviceable over its life. - Pit and hoistway examination: what to look at and in what order
A repeatable hoistway and pit inspection sequence - access, clearances, devices, housekeeping - with the findings that require the unit to come out of service. - Service safety practice: the habits that prevent the incidents
Lockout, car-top discipline, pit entry, rescue and the two-person rule - the working practices that decide whether a routine job becomes an incident. - Suspension ropes and belts: inspection criteria, wear patterns and retirement
How to examine suspension means properly, what the wear patterns tell you about the machine and alignment, and why retirement criteria must come from the maker…
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