What is unique about PSC motors?
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How does a potential relay work?
A heat exchanger in a refrigeration system has no disadvantages. True or false.
What is the formula for determining MFD.
Refrigerant flow rate is directly proportional to the _____ ____ across the TXV.
What is the primary purpose of a solenoid valve?
When are EPR's used on single evaporator systems? Multiple evaporator systems?
If condenser flooding is used as a means of low ambient control then what accessory will require special attention?
The distributor nozzle should be at least ___% loaded at minimum load conditions.
Why are heat exchangers used?
When does wire drawing occur and what 3 things can be done to prevent it?
What is the first thing you must do before replacing a head master?
When should a C.P.R be adjusted?
What kind of systems are hand expansion valves used with?
The inlet of the ORD valve senses ____ pressure and the out let senses _____ pressure.
What are the over voltage ratings for a start cap? Run cap?
How must a capacitor be discharged?
A low ambient control _____ on a _____ in pressure.
What control device would you expect to see with a capillary tube system?
Name 5 characteristics of a run cap.
When are CSCR (CSR) motors used.
In regards to TXVs, what must be considered when a system employs a distributor?
What 4 things does a C.P.R provide protection of?
What type of capacitor is used with a permanent-split capacitor motor?
Why are cap tubes soldered to the suction line or accumulator?
What method is used to return oil from the oil seperator to the crankcase?
Where must the C.P.R be installed?
Thermal starting relays have how many contacts? Also, what is another name used for them?
What accessory must never be used in conjunction with a capillary tube metering device?
What happens when the spring on an ORI valve is adjusted clockwise? What happens when the spring on a CRO valve is adjusted clockwise?
Internally equalized TXVs should be limited to ______ circuit evaporator coils having a pressure drop no greater than the equivalent of a __ temperature change.
Where would you find a thermostatic charge?
What is a required accessory for AEVs?
The sight glass should be installed ____stream of the filter/drier.
A fixed orifice is an inexpensive metering device for a _______ cycle system.
Which 2 TXV charges use the same refrigerant that is used in the system?
Some distributers have a port on the side of them. What is this port used for?
How must a receiver be sized as per B52 code?
What will happen if a 3-way valve fails?
What is the hammer blow effect?