Preventive Maintenance Schedules Flashcards
7 cards from real CST practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Preventive Maintenance Schedules flashcards as text
Which CCTV component typically requires the most frequent cleaning in dusty industrial environments?
Answer: Camera lens and dome cover
In dusty environments, camera lenses and dome covers accumulate particulate matter that degrades image clarity and require frequent cleaning.
A PM checklist item states 'verify recording retention compliance.' What does this mean?
Answer: Ensure recorded footage is retained for the required number of days per policy or regulation
Retention compliance means the system is storing footage for the minimum duration required by site policy, legal mandate, or regulatory requirement.
During a PM visit, a technician tests a camera's automatic day/night switching. Which condition best simulates this transition for testing?
Answer: Using a flashlight to expose and then cover the camera lens
Covering and then exposing the lens to light simulates lighting changes that trigger the camera's day/night switching mechanism for functional testing.
What is the recommended approach when a manufacturer discontinues firmware updates for a surveillance camera model?
Answer: Plan for equipment replacement and note the end-of-support status in maintenance records
End-of-support equipment presents security and reliability risks, so it should be flagged for replacement planning in maintenance documentation.
A surveillance system PM plan includes 'inspect grounding and bonding connections.' Why is this task critical?
Answer: To protect equipment from electrical surges and lightning damage
Proper grounding and bonding protect surveillance equipment from electrical surges, static discharge, and lightning strikes that could destroy cameras and recorders.
Which tool is most appropriate for verifying IP camera network connectivity during a preventive maintenance check?
Answer: Network cable tester and ping utility
A network cable tester confirms physical cable integrity while a ping utility verifies that the camera is communicating on the network.
A maintenance technician is reviewing a 90-day PM report and notices one camera has had three false motion alerts per day on average. What is the best preventive action?
Answer: Investigate the cause such as lighting changes or environmental movement and adjust sensitivity settings
Recurring false alerts indicate a misconfigured sensitivity setting or environmental trigger that should be identified and corrected to reduce alert fatigue.