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Tk electrical

Tk Electrical

Answer
Low Oil Pressure Switch is normally_____ and ____ at 15 PSI? Closed/ Opens
High Pressure Cutout Switch is _____ and _____ at 450 PSI? Closed/ Opens
Defrost Air Switch Compares what to what to initiate Defrost? Return air to discharge air pressure.
An input to the Microprocessor that Closes ar 42 degrees and Opens at 52 degrees toterminate defrost? Defrost Termination Switch.
Another name for a Defrost Termination Switch is a? Klixon.
K1= Heat Relay Pilot Solenoid
K2= High Speed Relay Throttle Solenoid
K3= Damper door Relay Damper door Solenoid
K4= Preheat Relay Glow plugs
K5= Starter Relay Starter Solenoid
K6= Shut Down Relay Safety Switch
K7= Run Relay Fuel Shut off Solenoid
K8= Hot Gas Relay Hot Gas Bypass Solenoid
Fuel Solenoid controls? Injection Pump Shut off Solenoid (ELAB)
Throttle Solenoid Controls? Engine high or low speed. Energized in high speed heat or cool.
Typically you will find What to prevent Fly-Back Voltage (arcing) when a Relay denergizes? Arc Supression Diodes.
An NTC sensor is one that? as temperature goes up resistance goes down.
a PTC sensor is one that? as temp goes up resistance goes up.
Graded sensors are used where in a TK system? Evaporator Coil, Return air temp, Discharge air temp.
A graded Sensor must be? programmed to the computer.
defrost can terminate when what two conditions are met? Temperature or time are met.
A variable position valve operated by a stepper motor is? Electronic Throttling Valve.
Low Suction normal discharge indicates? Lack of heat exchanged in the Evap, Damper door stuck closed, Frosted Evap, Belt problems.
Low suction and low discharge pressure indicates? Low charge, Low ambient temp.
High suction and dischage indicates? Overcharge, non condensible, restriction in condenser
High dischagre normal suction pressures indicate? Air or non-condensible
Created by: OConnells Class
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