MACS Test Questions And Answers With
Verified Solutions 100% Correct Latest
Update.
How much oil is lost during recovery? - ANSWER Very little if any
What's an issue with flushing an AC system? - ANSWER It dosnt remove all debris
from system
Is Topping Off a charge in a car allowed? - ANSWER Yes
Hold time after a system recovery? - ANSWER 5mins
What will happen to oil in a R134a system if left open? - ANSWER Sucks moisture
from air
Safety info about refrigerant is kept where? - ANSWER MSDS Sheet
What is the purpose of service caps? - ANSWER They're the primary seal
What is the result of R134a leaking into the atmosphere? - ANSWER It gets
trapped in the troposphere
Is 1234yf flammable? - ANSWER Yes only a little
What must be done after purchasing a new recovery machine? - ANSWER Register
it with the EPA
Why would excess oil come out during recovery? - ANSWER System probably had
an oil overcharge
What is the DOT# for recovery tanks? - ANSWER 4BA or 4bW
What system requires extra attention during recovery? - ANSWER 1234yf
What is the standard for SAE J2791? - ANSWER Leak detector that picks up 4
grams or less a year
What ust be done with recovered refrigerant? - ANSWER The air must be taken out
completely
Verified Solutions 100% Correct Latest
Update.
How much oil is lost during recovery? - ANSWER Very little if any
What's an issue with flushing an AC system? - ANSWER It dosnt remove all debris
from system
Is Topping Off a charge in a car allowed? - ANSWER Yes
Hold time after a system recovery? - ANSWER 5mins
What will happen to oil in a R134a system if left open? - ANSWER Sucks moisture
from air
Safety info about refrigerant is kept where? - ANSWER MSDS Sheet
What is the purpose of service caps? - ANSWER They're the primary seal
What is the result of R134a leaking into the atmosphere? - ANSWER It gets
trapped in the troposphere
Is 1234yf flammable? - ANSWER Yes only a little
What must be done after purchasing a new recovery machine? - ANSWER Register
it with the EPA
Why would excess oil come out during recovery? - ANSWER System probably had
an oil overcharge
What is the DOT# for recovery tanks? - ANSWER 4BA or 4bW
What system requires extra attention during recovery? - ANSWER 1234yf
What is the standard for SAE J2791? - ANSWER Leak detector that picks up 4
grams or less a year
What ust be done with recovered refrigerant? - ANSWER The air must be taken out
completely
