Hvac excellence a_c
Terms in this set (100)
10lbs. of refrigerant passing through a water cooled 100 F
condenser will lose 20 Btu's of heat per lb. If 10 lbs. of
water passes through the condenser with an entering
temperature of 80 F. The temperature of the water
leaving the condenser is
An accumulator is used to Prevent liquid refrigerant from reaching the compressor
After a system has been opened and the compressor Replace the filter drier, leak check, evacuate, and charge
changed, the service technician must
An air conditioning system that is oversized can cause Inefficient dehumidification of the conditioned space
Air or other non-condensable gases in a capillary High suction pressure and high discharge pressure
tube air conditioning system will cause these
symptoms
2/4/2026
, Hvac excellence a_c
At a residential service call, "no cooling" complaint, An inert gas
the service technician finds the unit to be completely
out of refrigerant. The technician decides to use trace
amount of refrigerant and ____ in order to pressurize
the system.
An automatic expansion valve is best suited When the system load remains fairly constant
The automatic expansion valve is designed to Constant evaporator pressure
maintain
Back seating a two way service valve results in Closed service port with normal system flow
Bubbles in a sight glass could be an indication of A refrigerant blend with a high temperature glide
____ can be used for leak detection with ALL high Soap bubbles
pressure refrigerants
The clearance space in a reciprocating compressor Has an effect on compressor capacity
2/4/2026
, Hvac excellence a_c
A compound pressure gauge measures Pressure and vacuum
A compressor that has a broken reed valve will cause High suction pressure and low discharge pressure
these symptoms
A customer complains that their air conditioning A restriction of the return air or a dirty evaporator
system is running constantly, but not cooling enough.
The suction line is very cold and the compressor is
sweating. The most likely cause is
A customer reports that their residential split system Debris from the burned out compressor has clogged the drier
had a compressor replaced last week by another
service company. Now the unit is not cooling
properly. When you arrive and inspect the unit, you
find that the evaporator seems to be starved for
refrigerant. On examining the condensing unit, you
find that the liquid line is sweating where it leaves the
drier. This is most likely the result of
2/4/2026
Terms in this set (100)
10lbs. of refrigerant passing through a water cooled 100 F
condenser will lose 20 Btu's of heat per lb. If 10 lbs. of
water passes through the condenser with an entering
temperature of 80 F. The temperature of the water
leaving the condenser is
An accumulator is used to Prevent liquid refrigerant from reaching the compressor
After a system has been opened and the compressor Replace the filter drier, leak check, evacuate, and charge
changed, the service technician must
An air conditioning system that is oversized can cause Inefficient dehumidification of the conditioned space
Air or other non-condensable gases in a capillary High suction pressure and high discharge pressure
tube air conditioning system will cause these
symptoms
2/4/2026
, Hvac excellence a_c
At a residential service call, "no cooling" complaint, An inert gas
the service technician finds the unit to be completely
out of refrigerant. The technician decides to use trace
amount of refrigerant and ____ in order to pressurize
the system.
An automatic expansion valve is best suited When the system load remains fairly constant
The automatic expansion valve is designed to Constant evaporator pressure
maintain
Back seating a two way service valve results in Closed service port with normal system flow
Bubbles in a sight glass could be an indication of A refrigerant blend with a high temperature glide
____ can be used for leak detection with ALL high Soap bubbles
pressure refrigerants
The clearance space in a reciprocating compressor Has an effect on compressor capacity
2/4/2026
, Hvac excellence a_c
A compound pressure gauge measures Pressure and vacuum
A compressor that has a broken reed valve will cause High suction pressure and low discharge pressure
these symptoms
A customer complains that their air conditioning A restriction of the return air or a dirty evaporator
system is running constantly, but not cooling enough.
The suction line is very cold and the compressor is
sweating. The most likely cause is
A customer reports that their residential split system Debris from the burned out compressor has clogged the drier
had a compressor replaced last week by another
service company. Now the unit is not cooling
properly. When you arrive and inspect the unit, you
find that the evaporator seems to be starved for
refrigerant. On examining the condensing unit, you
find that the liquid line is sweating where it leaves the
drier. This is most likely the result of
2/4/2026
