Tools & Equipment Operation Flashcards
7 cards from real CAR practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Tools & Equipment Operation flashcards as text
What is the purpose of a manifold gauge set's sight glass when used during appliance refrigerant recovery?
Answer: To visually confirm refrigerant flow and detect moisture or oil contamination
The sight glass allows technicians to visually observe refrigerant flow and detect bubbling (indicating incomplete recovery) or discoloration from moisture or oil.
An appliance recycler needs to remove foam insulation containing blowing agents from a refrigerator cabinet. Which equipment configuration is required?
Answer: Sealed degassing chamber or shredder with vapor capture system
Foam containing blowing agents (such as cyclopentane or CFCs) must be processed in sealed systems that capture vapors to prevent release of ozone-depleting or flammable substances.
When inspecting a hydraulic lift table used to position appliances for disassembly, which component should be checked for leaks before each shift?
Answer: Hydraulic hoses, fittings, and the cylinder for oil seepage
Hydraulic hoses, fittings, and cylinders are the most common failure points and must be inspected for oil leaks before each use to prevent sudden table collapse.
A technician uses a multimeter to test a washing machine motor before deciding to repair or recycle. Which setting is used to check if the motor windings are open (broken)?
Answer: Resistance/continuity (Ohms or continuity beep)
The resistance or continuity setting on a multimeter detects open windings in a motor by showing infinite resistance or no continuity beep across the winding terminals.
What is the correct response when a recovery cylinder reaches 80% of its maximum gross weight during refrigerant recovery?
Answer: Stop recovery, close valves, and replace with a new empty recovery cylinder
Recovery cylinders must not be filled beyond 80% of their water capacity by weight; exceeding this limit risks hydrostatic rupture if temperature rises.
Which type of saw blade is most appropriate for cutting through the stainless-steel drum of a recycled washing machine?
Answer: Bi-metal reciprocating saw blade rated for stainless steel
Bi-metal blades with a high-speed steel tooth edge bonded to a flexible alloy body are designed to withstand the hardness of stainless steel without shattering.
In a CAR-certified facility, lockout/tagout (LOTO) procedures must be applied before performing which task on appliance processing equipment?
Answer: Clearing a jam or performing maintenance on any powered equipment
LOTO must be applied before clearing jams or performing maintenance on any powered equipment to prevent unexpected energization that could cause injury.