When is a suction line filter drier required?
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What is another name for a low ambient control (L.A.C) valve?
An oil pressure switch ____ on a ____ in _____ pressure. It also has a _____ ______.
The identifying mark on an oil filled capacitor should be connected to the _____ side of the circuit. Why?
What is done to prevent frosting of the line immediately after the high side float valve?
Shaded pole motors are used on what kind of motors? (2 answers. Hint: torque and HP)
How do EPR's operate?
What refrigeration applications are externally equalized TEVs limited too?
On an unidentified power cord you notice it has a smooth wire and a ribbed wire. Which is hot and which is neutral?
How does a current sensing relay work?
Name two symptoms of a blocked cap tube.
A low pressure switch ______ on a _____ in pressure.
How should a C.P.R be set if a discharge bypass valve is used?
What are the diameters of a distributor?
If a system's capacity overwhelms the use of one C.P.R then what can be done?
What are the terminal identifications of a potential relay? A current sensing relay?
How will an oil pressure control operate if the pressure taps are installed backwards?
How many degrees out of phase should the current in the start winding be with the current in the run winding to develop maximum starting torque?
What are the opening and closing forces on a TXV?
Does an external equalizer provide equalization during the off cycle?
What is typically found in the first 6" of a plugged cap tube? The last 6"?
Which type of charge would you find on a chiller located outdoors and operating while exposed to cold temperature?
What causes sludge and varnish?
Name 6 characteristics of a start cap.
Where should a filter/strainer be installed when a cap tube is used?
Why do flooded starts happen and what can be done to correct them?
Where is the sensing bulb of the constant cut-in thermostat located?
_____ acting solenoid valves are of the type where the stem and plunger assembly open the port of the valve directly.
How many outlets can a distributor have?
What type of sensor does an AEV incorporate?
What is the primary job of an oil separator?
True or false. Start caps will provide up to 20 3 second starts per hour.
How does oil return to the compressor with an accumulator?
What are the opening and closing forces on an AEV.
What is the biggest disadvantage to an AEV?
When is pressure equalization required and can a TXV be ordered to accomodate it?
When will the ORI valve begin to throttle shut?
Inlet strainers are used on all ORIT EPR's except ____ connections.
What is “venturi”?
What is the meaning of the term “flammability limits”?