102i Flashcards
Are chlorofluorocarbon (CFC) aloud?
No
Zeotropic are in what number series
400
Azeotropic are in what number series
500
R-12 is a
CFC
What year did they ban HCFC
2020
A zeotrope is a
Mixture of two or more refrigerants each with there own boiling point
Has Glide in saturated condition
Zeotropes must be charged as a
Liquid
An azeotrope is a mixture of
Two refrigerants that the distillation process cannot easily separate
The Montreal protocol was established in
2000
What oil do we use
Synthetic oil
How long can oil be exposed to air for
5 minutes
R-134 bottle color is
Light sky blue
R-404A bottle color is
Orange
Cylinders with flammable refrigerant have a what color band on top
Red
The B52 mechanical refrigeration code says all refrigerant must be stored in a machinery room in containers. The max amount of weight you can have is
300lbs
Refillable cylinders two weight capacity’s (WC) are
80% at 70°F
60% at 120°F
Three basic methods of refrigerant recovery
Absorption recovery
Active recovery
Push pull recovery
Liquid recovery is the
Quickest
Vapour recovery is the
Slowest
What weight is required for push pull recovery method
20lbs
You must report leaks that exceed
10kg
You can use what to detect ammonia leaks
Litmus paper and suphlur stick
Tare weight is
Cylinder weight
Water capacity is
Cylinder weight of water 60°F
