Ch 8 Elevators (2) Flashcards
Explain elevator machine room.
Heart of the system - contains elevator hoisting machines, motor generator sets, solid state power supply and control equipment.
What is in an elevator hoist-way?
Contains guide rails on which elevator cars and counter weight run.
What is wait time and what is considered excellent wait time?
25 seconds or less.
What areas should be checked during a property managers elevator system review?
- Performance
- Safety features|
- Fixtures
- Doors
- Leveling
- Ride
- Run times
What operations are commonly timed and checked?
- Floor to floor time
- Performance time
- Brake to brake time
- Door open time
- Door dwell
Environmental concerns with hydraulic elevator.
Hydraulic fluid is petroleum based and may be classified as hazard substance.
15 minute notification of discharge
What is an Armature?
Rotating coils of electric motor
What are two common safety tests for elevators?
- 5 year full load
- Hand tripping of governor to see if safety jaws are effective
Six area should maintenance providers be evaluated.
- Technical expertise
- Work force
- Safety record
- Support
- Facilities
- Fiscal soundness
What are four major types of elevator maintenance contract options?
- Full maintenance
- (POG) Parts, oil and grease
- (OG) Oil and Grease
- Survey and report
Full maintenance contract like insurance?
Vendor takes full responsibility - Intended to eliminate all concerns
Explain POG
Excludes large components such as elevator machine rooms, motors and re-cabling. Clearly states work covered and parts supplied.
Explain OG
Knowledgeable person to inspect. Mechanic lubricates moving parts. Owner pays for repairs and parts
What is propration?
List details of elevator components maintenance company believes will soon need replacement.
What types of records and reports are provided by the elevator maintenance company?
- Call back and repair record
- Annual equipment survey
- Repair recommend equipment
- Performance report
What is a call back?
Customer request that requires check of an elevator other then regularly scheduled maintenance.
What are some examples of peripheral equipment that mat be modernized?
Door operators, roller guides, door detector systems and emergency lighting.
Two phases of elevator operation.
1 - Lobby key
2 - In car for fireman
What is recommeded minimum emergency power supply for elevators?
Capacity to move one elevator at a time at normal speed.
The best method for conducting an in-house review of the elevator system is to:
D. Ride elevators and note passenger comments
The heart of the system for elevators and the location most routine maintenance is:
D. Machine Room
During a fire emergency, special elevator emergency service allows key operations of elevators by:
B. Firefighters
A traction elevator safety test is required yearly is performed by hand-tripping the governor to see if:
A. The safety jaws operate
Elevator maintenance providers should be evaluated and selected on the basis of their capabilities in the following areas: Technical expertise, work force, safety records, support, facilities and
A. Fiscal soundness
The minimum recommended emergency power supply per elevator bank is the capacity to move:
C. One elevator at a time at normal speed
