CET Maintenance, Inspection & Troubleshooting 1 — Questions and Answers
Question 1: What is the purpose of regular elevator lubrication?
- Prevent rust on walls
- Increase ride speed
- Reduce friction and wear (Correct answer)
- Cool the machine room
Correct answer: Reduce friction and wear
Lubrication reduces friction between moving parts, preventing wear and ensuring smooth operation.
Question 2: During a monthly inspection, which of the following is typically checked?
- Interior design
- Lighting color
- Door operation and safety circuits (Correct answer)
- Advertising panels
Correct answer: Door operation and safety circuits
Monthly inspections often involve checking door operations, safety devices, and ride performance.
Question 3: What is the first step in troubleshooting an elevator fault?
- Reset the main power
- Replace all components
- Verify the fault through indicators or reports (Correct answer)
- Oil all parts
Correct answer: Verify the fault through indicators or reports
The first step is to verify the fault through control indicators or user reports before taking further action.
Question 4: Which tool is commonly used to test elevator control circuits?
- Wire stripper
- Screwdriver
- Multimeter (Correct answer)
- Cable tie gun
Correct answer: Multimeter
A multimeter allows technicians to check voltage, continuity, and resistance in circuits during troubleshooting.
Question 5: What issue is indicated by frequent elevator leveling problems?
- Incorrect floor numbering
- Faulty leveling sensors or brakes (Correct answer)
- Broken ceiling tiles
- Stuck call button
Correct answer: Faulty leveling sensors or brakes
Frequent leveling issues can signal faulty sensors or brake malfunctions affecting stop accuracy.
Question 6: Why is preventive maintenance important in elevator systems?
- Makes elevators run slower
- Removes the need for inspections
- Avoids emergency breakdowns and prolongs lifespan (Correct answer)
- Improves wall aesthetics
Correct answer: Avoids emergency breakdowns and prolongs lifespan
Preventive maintenance minimizes unexpected breakdowns and extends equipment lifespan by addressing issues early.
CET Maintenance, Inspection & Troubleshooting 1
What is the purpose of regular elevator lubrication?