2. 410a safety

Polyolester (POE) Oils in Plastic Containers will

• Separate

• become more alkaline

• become acidic

• absorb moisture through the plastic

R407c has:

• A foul odor

• To be charged in the Vapor phase

• The ability to Fractionate

• No Temperature glide

A Condensing Unit designed for use with R-22...

• Must be replaced with a model designed for use with 410a

• Cannot withstand the higher pressure of 410a

• Both A and B

• none of the above

Removal of refrigerant from a system can be accomplished by these two methods

• Condensation and evaporation

• Dew Point and Bubble Point

• Superheating and Subcooling

• Active and Passive

The Cylinder Color Code for R-407c is:

• Medium Chocolate Brown

• Light Green

• Rose

• Light Blue

The Cylinder Color Code for 410a is:

• Light Chocolate Brown

• Light Green

• Light Blue

• Rose

The Receiver Bypass,

• Prevents subcooled vapor from sitting in the receiver and losing its subcooling

• prevents superheated liquid from sitting in the receiver and losing its superheat

• Prevents superheated vapor from sitting in the receiver and losing its superheat

• Prevents subcooled liquid from sitting in the receiver and losing its subcooling

An Overcharged system can cause:

• Frosted Suction Line

• Low Compression ratio

• High side Pressure increase

• High side pressure decrease

Polyolester Lubricants (POES) are used extensively with:

• HFCs

• Lawn Mowers

• HCFCs

• CFCs

Technicians handling liquid refrigerants should wear gloves and:

• Steel Toe boots

• Self Contained Breathing apparatus (SCBA)

• Hearing Protection

• Approved Eye Protection