Commercial Refrigeration
Which line connects the metering device and the evaporator - Answer Expansion line
Where is the discharge line located - Answer Between the compressor and the condenser
What components are located on the high side - Answer Condenser, liquid line and discharge
What components are located on the low side - Answer Evaporator, expansion line and suction line
What type of motor has no capacitors or relays - Answer Shaded pole
When checking terminals on compressor the highest resistance is located where - Answer Between start
and run
The run terminal on compressor is located - Answer Across from lowest resistance
What type of capacitor has the most mfd - Answer Start capacitor
The major advantage of a TXV is - Answer Orks with varying loads
Tve function of the TXV iz to control the flow of the refrigerant into the - Answer Evaporator
, The refrigerant in the evaporator changes state at its - Answer Saturation pressure, boiling point,
saturation temperature
The heat added to the refrigerant above the point of complete vaporization is called - Answer Superheat
The three fundamental pressures that affect the opening and closing of the TXV are - Answer Bulb
pressure, spring pressure, evaporating pressure
Which two pressures affect the closing of TXV - Answer Evaporator and spring pressure
___________ pressure is applied through a drill port within the body of the externally equalized TXV -
Answer Evaporator
An automatic expansion valve _________ - Answer Controls the pressure of the refrigerant in
evaporator
If the spring pressureof TXV is increased,__________ superheat induced pressure is required to open
the valve - Answer More
The fluid in the bulb of TXV - Answer Can be either the same or different than thats used on system
When in defrost mode what contacts are closed - Answer 1 and 3
When 2 and 4 are closed what mode are you in - Answer Refrigeration mode
The solenoid is wired in series with - Answer Thermostat
HLS is in series with what load - Answer Heater
Which line connects the metering device and the evaporator - Answer Expansion line
Where is the discharge line located - Answer Between the compressor and the condenser
What components are located on the high side - Answer Condenser, liquid line and discharge
What components are located on the low side - Answer Evaporator, expansion line and suction line
What type of motor has no capacitors or relays - Answer Shaded pole
When checking terminals on compressor the highest resistance is located where - Answer Between start
and run
The run terminal on compressor is located - Answer Across from lowest resistance
What type of capacitor has the most mfd - Answer Start capacitor
The major advantage of a TXV is - Answer Orks with varying loads
Tve function of the TXV iz to control the flow of the refrigerant into the - Answer Evaporator
, The refrigerant in the evaporator changes state at its - Answer Saturation pressure, boiling point,
saturation temperature
The heat added to the refrigerant above the point of complete vaporization is called - Answer Superheat
The three fundamental pressures that affect the opening and closing of the TXV are - Answer Bulb
pressure, spring pressure, evaporating pressure
Which two pressures affect the closing of TXV - Answer Evaporator and spring pressure
___________ pressure is applied through a drill port within the body of the externally equalized TXV -
Answer Evaporator
An automatic expansion valve _________ - Answer Controls the pressure of the refrigerant in
evaporator
If the spring pressureof TXV is increased,__________ superheat induced pressure is required to open
the valve - Answer More
The fluid in the bulb of TXV - Answer Can be either the same or different than thats used on system
When in defrost mode what contacts are closed - Answer 1 and 3
When 2 and 4 are closed what mode are you in - Answer Refrigeration mode
The solenoid is wired in series with - Answer Thermostat
HLS is in series with what load - Answer Heater
