Installation
Negative pressure/pull-through
In what state should blended refrigerants like R410A be charged into a system?
Liquid
What is the EPA recommended micron level before releasing a refrigerant charge?
Under 500 microns
What is the primary function of a refrigeration compressor?
Pump vapor
What line size would the connection be on a 709s suction line filter drier?
9/8" or 1 1/8"
Which thermostat terminals are connected to the condenser's contactor coil?
Y-C
From warmer to cooler
What would a micron measurement rising to OL indicate?
A leak
What two measurements would you need to calculate Condenser Rise?
How many BTUs is equal to one ton of refrigeration in 24 hours?
288,000 BTUs
Name one thing you should be aware of when starting up a three phase compressor.
Pumping, normal amp draw, noise
Name one of the locations where refrigerant changes pressure in an AC system.
Compressor, Metering Device
What would a micron measurement rising to 1500 and then holding indicate?
Moisture in the system
What two measurements would you need to calculated Evaporator Split?
Return Air - Low Pressure Converted
Which type of residential compressor is cooled by discharge gas?
Scroll
Which winding's amp draw do you need to measure to find capacitance when a system is running?
Start
When a liquid refrigerant has been cooled beyond it's saturation temperature it is considered?
Subcooled
How often should you change vacuum pump oil?
After each evacuation
What are the three functions of a condenser?
Reject heat, condense vapor into a liquid, subcool liquid
What was Dan's hairstyle from 2006-2015?
Bald/Shaved
What is slope requirement for an AC coil's drain according to mechanical code?
1/8" per foot
Refrigerants boil at _______ pressures and temperatures.
lower
How many microns equal 1" in Hg on your compound gauge?
25,400
What is superheat and how is it calculated?
Superheat is additional heat added to a vapor. It is calculated by subtracting LPC from the SLT.
What is the make, model, and year on any of Dan's antique vehicles?
1992 Oldsmobile Cutlass Cierra
1990 GMC Suburban
2003 Buick Century
2008 GMC Savan