WorksheetsAC Components
Total questions: 21
Worksheet time: 13mins
Tech A says a Evap Core is a heat exchanger. Tech B says a Condenser is a heat exchanger. Who is correct?
Tech A
Tech B
Both A and B
Neither A nor B
Which refrigerant is a hydrofluoroolefin?
R1234yf
R12
R134a
Freon
Ice
If your High side pressure is too high and your Low side pressure is too low.. Its likely that:
The TXV is stuck open.
The TXV is stuck in the closed position.
The compressor is not working.
A Shrader Valve is leaking.
You have low refrigerant.
Antifreeze is dripping into the cab on the passenger side. Most likely:
You have a Evap Core leak
You have a clogged Evap housing drain
You have a Heater Core leak
You have too much refrigerant in the system.
Tech A says the Low side Line coming out of the Condenser is Bigger than the High side line going in. Tech B says both lines on the condenser are High Side. Who is correct?
Tech A
Tech B
Both A and B
Neither A nor B
Customer States: Bad smell coming from dash vents when the AC is on.
The evap housing drain is clogged
The cabin filter needs to be replaced
Evap Core is dirty
All of the above
Tech A says: Use high pressure shop air to blow out Cabin filters. Tech B says use low pressure air to blow out cabin filters. Who is correct?
Tech A
Tech B
Both A and B
Neither A nor B
Is used to boil off water from inside the AC system:
Air Pressure
Propane Torch
Recovery Pump
Vaccum Pump
Takis breath
Which of these is not a function of a Trinary Switch
Low Pressure Protection
High Pressure Cutoff
Engine Fan On-Off
Activates Heater core
Which is the most commonly used Refrigerant?
R134a
R1234yf
Soap
Freon
In a compact vehicle, how long will you have to vacuum when you replace a dryer?
15 min
45 min
30 min
1 hour
Match the Following:
Evap
Condensor
Heater Core
Intercooler
Radiator
GWP:
Get with the Program
Global Warming Potential
Good Work Plan
Global Weapons Program
R-134a has a destructive affect value of:
(a)
What the term PAG stand for?
(a)
Where can you find how much refrigerant your vehicle needs?
Label under the Hood
Refrigerant Can
Compressor
Vehicle Size
On the Accumulator
What does a clouded sight glass indicate:
System OK
Refrigerant Low, Possible air in system
Desiccant Breaking down, system contaminated
Too Much Oil
Overcharged
If the ambient temp is 90 degrees, your AC should be blowing around ____ Degrees if working properly
45 degrees
50 degrees
65 degrees
60 degrees
90 degrees
What are some things that control the compressor on/off?
Thermostatic Switch
Low Pressure Cutout Switch
High Pressure Cutout Switch
High Pressure Fan Switch
All of the Above
What is used to boil water from inside the AC system?
(a)
Tech A says: The Low side line diameter is smaller then the High side line diameter. Tech B says: The High side line diameter is larger than the low side line diameter. Who is correct?
Tech A
Tech B
Both Tech A and B
Neither Tech A nor B
