Lubrication Systems & Maintenance Flashcards
7 cards from real CLS practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Lubrication Systems & Maintenance flashcards as text
What is the primary purpose of a centralized lubrication system in industrial equipment?
Answer: To deliver precise lubricant quantities to multiple points automatically
Centralized lubrication systems automatically deliver measured amounts of lubricant to multiple points simultaneously, reducing downtime and ensuring consistent lubrication.
In a single-line parallel lubrication system, what happens when the main line pressure is released?
Answer: Injectors reset to prepare for the next lubrication cycle
When pressure is released in a single-line parallel system, the injectors reset (recharge) with lubricant, readying them for the next pressurization cycle.
Which lubrication system type uses divider valves to distribute lubricant sequentially to each outlet?
Answer: Progressive system
Progressive systems use divider valves that cycle sequentially, each valve activating the next, ensuring lubricant is delivered to each point in a fixed order.
What is the primary advantage of a dual-line lubrication system over a single-line system?
Answer: Ability to serve longer line distances and more lubrication points
Dual-line systems can cover greater distances and serve more lubrication points than single-line systems because two main lines alternate under pressure.
In an oil mist lubrication system, what is the typical particle size range for the oil mist?
Answer: 5 to 10 micrometers
Oil mist systems generate particles of approximately 1–5 micrometers (commonly cited range 5–10 µm depending on standard), small enough to remain airborne and penetrate bearing clearances.
Which maintenance strategy involves replacing or servicing components based on time intervals regardless of their condition?
Answer: Preventive (time-based) maintenance
Preventive (time-based) maintenance schedules service at fixed intervals regardless of actual component condition, ensuring reliability through regular attention.
What does an automatic lubricator (single-point lubricator) primarily use to dispense grease or oil?
Answer: Electromechanical or electrochemical gas-generating mechanism
Single-point automatic lubricators use an electromechanical motor or an electrochemical reaction generating gas to steadily push lubricant into the bearing at a controlled rate.