Guidelines ACTUAL QUESTIONS AND
CORRECT ANSWERS
Yellow Top - CORRECT ANSWERS✅✅Color indicating approved refrigerant recovery
cylinder.
Grey Body - CORRECT ANSWERS✅✅Standard color for refrigerant recovery cylinders.
Refrigerant Recovery Cylinder - CORRECT ANSWERS✅✅Container for storing recovered
refrigerants.
80% Capacity Rule - CORRECT ANSWERS✅✅Cylinders should be filled to 80% by
weight.
Hydrostatic Testing - CORRECT ANSWERS✅✅Testing required every 5 years for high-
pressure containers.
Vapor Recovery - CORRECT ANSWERS✅✅Method for recovering refrigerant vapor from
systems.
Mechanical Float Device - CORRECT ANSWERS✅✅Controls fill level in recovery
cylinders.
Electronic Shut-off Device - CORRECT ANSWERS✅✅Automatically stops filling
recovery cylinders.
DOT Classification Tag - CORRECT ANSWERS✅✅Label required for transporting
refrigerant cylinders.
Hazard Class 2.2 - CORRECT ANSWERS✅✅Nonflammable compressed gases
classification for shipping.
, Pressure Safety Valve - CORRECT ANSWERS✅✅Prevents cylinder explosion by releasing
excess pressure.
Recovery Machine Grounding - CORRECT ANSWERS✅✅Essential safety measure when
recovering flammable refrigerants.
Leak Testing - CORRECT ANSWERS✅✅Process to identify leaks in refrigerant systems.
Maximum Low-side Test Pressure - CORRECT ANSWERS✅✅Safe pressure for leak
testing, found on data plate.
Oxygen and Compressed Air Hazard - CORRECT ANSWERS✅✅Can cause explosions
when mixed with refrigerants.
Safety Precautions - CORRECT ANSWERS✅✅Wear safety glasses and gloves when
handling refrigerants.
Disposable Cylinder Restrictions - CORRECT ANSWERS✅✅Cannot be used for
recovering refrigerants.
Recovery Cylinder Labeling - CORRECT ANSWERS✅✅Identifies type of refrigerant to
prevent mixing.
Dehydration Completion - CORRECT ANSWERS✅✅Achieved at 500 microns vacuum or
less.
Pressure Increase Indication - CORRECT ANSWERS✅✅Rising pressure suggests moisture
or leaks in system.
Flammable Refrigerant Handling - CORRECT ANSWERS✅✅Requires special precautions
to avoid ignition.