ESCO Air Conditioning Exam
_________ may be use for a leak detection with all excessive-stress refrigerant - ANS-Soap
bubbles
zero pounds in keeping with square inch absolute is - ANS-A stress which cannot be similarly
decreased
zero pounds in step with square inch gauge is - ANS-The same as atmospheric stress
10 pounds of refrigerant passing via a water cooled condenser will lose 20 BTUs of heat
consistent with pound. If 10 pounds of water passes through the condenser with an entering
temperature of 80°F the temperature of the water leaving the condenser is - ANS-one
hundred°F
A compound stress gauge measures - ANS-Pressure and vacuum
A compressor that has a broken reed valve will purpose the signs - ANS-High suction pressure
and occasional discharge pressure
A consumer complains that their air con device is running continuously, however no cooling
sufficient. The suction line could be very bloodless in the compressor is sweating. The maximum
in all likelihood purpose is - ANS-a restriction of the go back arir or a dirty evaporator
A patron reviews that the residential break up gadget had a compressor changed final week by
way of every other carrier organization. Now the unit isn't always cooling belongings. When you
arrive and check out the unit you discover that the evaporator seems to be starved for
refrigerant. On examining the condensing unit, you discover that the liquid line is sweating
wherein it leaves the dryer. This is maximum probably the end result of - ANS-Debris from the
burned out compressor has clog the dryer
A decrease in superheat reasons the thermostatic growth valve to start to - ANS-Close
A dirty evaporator in an air con machine will motive the signs and symptoms - ANS-Low suction
stress and low discharge strain
A drain entice ought to be set up on a break up gadget while the - ANS-Air handler drain is on
the poor air side
, A defective condenser fan motor on an air conditioning system will cause the signs and
symptoms - ANS-High suction pressure and high discharge pressure
A liquid line filter-drier need to be positioned between the - ANS-Condenser and the Metering
device
A liquid receiver is used to - ANS-save liquid refrigerant
A liquid to suction warmness exchanger is regularly used to - ANS-increse liquid subcooling
A low stress reduce off transfer is used to - ANS-establish a minimal working stress within the
evaporator
A low refrigerant price in an air con device will motive the signs and symptoms - ANS-Low
suction strain and coffee discharge stress
A partly clogged capillary tube can purpose - ANS-A starved evaporator
A in part froze evaporator may be due to - ANS-an undercharge
A refrigerant overcharge in a capillary tube aircon gadget will motive the symptoms - ANS-High
suction pressure and excessive discharge pressure
A upward thrust in evaporator stress causes the automatic growth valve to begin to - ANS-Close
A sight glass would be usually positioned - ANS-inside the liquid line before the metering tool
A technician has discovered an air-conditioning system with a leak inside the liquid line. After
the line is repaired the gadget is evacuated in well recharged. When the gadget restarted the
compressor is noisy and walking hot. The maximum probably purpose of the noise is - ANS-Low
oil inside the gadget
A TEV sensing bulb which becomes indifferent from the suction line will motive the symptoms -
ANS-High suction pressure and decrease than regular discharge pressure
A thermal electric enlargement valve is controlled by way of - ANS-NTC thermistor
A thermostatic enlargement valve is designed to hold - ANS-Constant evaporator superheat
After a system has been opened and the compressor changed the carrier technician should -
ANS-Replace the filter dryer, leak check, evacuate, and rate
Air or other non-condensable gases in a capillary tube aircon machine will motive the signs -
ANS-High suction stress and excessive discharge stress
_________ may be use for a leak detection with all excessive-stress refrigerant - ANS-Soap
bubbles
zero pounds in keeping with square inch absolute is - ANS-A stress which cannot be similarly
decreased
zero pounds in step with square inch gauge is - ANS-The same as atmospheric stress
10 pounds of refrigerant passing via a water cooled condenser will lose 20 BTUs of heat
consistent with pound. If 10 pounds of water passes through the condenser with an entering
temperature of 80°F the temperature of the water leaving the condenser is - ANS-one
hundred°F
A compound stress gauge measures - ANS-Pressure and vacuum
A compressor that has a broken reed valve will purpose the signs - ANS-High suction pressure
and occasional discharge pressure
A consumer complains that their air con device is running continuously, however no cooling
sufficient. The suction line could be very bloodless in the compressor is sweating. The maximum
in all likelihood purpose is - ANS-a restriction of the go back arir or a dirty evaporator
A patron reviews that the residential break up gadget had a compressor changed final week by
way of every other carrier organization. Now the unit isn't always cooling belongings. When you
arrive and check out the unit you discover that the evaporator seems to be starved for
refrigerant. On examining the condensing unit, you discover that the liquid line is sweating
wherein it leaves the dryer. This is maximum probably the end result of - ANS-Debris from the
burned out compressor has clog the dryer
A decrease in superheat reasons the thermostatic growth valve to start to - ANS-Close
A dirty evaporator in an air con machine will motive the signs and symptoms - ANS-Low suction
stress and low discharge strain
A drain entice ought to be set up on a break up gadget while the - ANS-Air handler drain is on
the poor air side
, A defective condenser fan motor on an air conditioning system will cause the signs and
symptoms - ANS-High suction pressure and high discharge pressure
A liquid line filter-drier need to be positioned between the - ANS-Condenser and the Metering
device
A liquid receiver is used to - ANS-save liquid refrigerant
A liquid to suction warmness exchanger is regularly used to - ANS-increse liquid subcooling
A low stress reduce off transfer is used to - ANS-establish a minimal working stress within the
evaporator
A low refrigerant price in an air con device will motive the signs and symptoms - ANS-Low
suction strain and coffee discharge stress
A partly clogged capillary tube can purpose - ANS-A starved evaporator
A in part froze evaporator may be due to - ANS-an undercharge
A refrigerant overcharge in a capillary tube aircon gadget will motive the symptoms - ANS-High
suction pressure and excessive discharge pressure
A upward thrust in evaporator stress causes the automatic growth valve to begin to - ANS-Close
A sight glass would be usually positioned - ANS-inside the liquid line before the metering tool
A technician has discovered an air-conditioning system with a leak inside the liquid line. After
the line is repaired the gadget is evacuated in well recharged. When the gadget restarted the
compressor is noisy and walking hot. The maximum probably purpose of the noise is - ANS-Low
oil inside the gadget
A TEV sensing bulb which becomes indifferent from the suction line will motive the symptoms -
ANS-High suction pressure and decrease than regular discharge pressure
A thermal electric enlargement valve is controlled by way of - ANS-NTC thermistor
A thermostatic enlargement valve is designed to hold - ANS-Constant evaporator superheat
After a system has been opened and the compressor changed the carrier technician should -
ANS-Replace the filter dryer, leak check, evacuate, and rate
Air or other non-condensable gases in a capillary tube aircon machine will motive the signs -
ANS-High suction stress and excessive discharge stress
