Recovery/Vacuum
EPA Regulations require that your hoses to be equipped with these types of fittings
Low-Loss
R-410a
When checking for leaks, look for _______ residue as a sign of a potential leak.
oil
This type of appliance is used to provide cooling in order to control heat and/or humidity in occupied facilities including but not limited to residential, office, and commercial buildings.
Comfort Cooling
This Certification allows Technicians to work with medium, high, and very high-pressure systems that are not small appliances
Type II
A vacuum of at least __________ should be pulled to assure all moisture has been removed
500 Microns
Recovering refrigerant in the vapor phase minimizes
the loss of oil from from the system
When pressurizing a system with nitrogen, always use a _______
Pressure Regulator
These types of appliances are used in the retail food and cold storage warehouse sectors.
Commercial Refrigeration
Soap bubbles are best used to _____________________.
pinpoint refrigerant leaks
Before recovering into an empty recovery cylinder, you must first
evacuate the cylinder
What is the pressure designation of equipment utilizing R-410a?
High
In a system that is uses 51% of it's capacity for industrial process refrigeration and 49% for comfort cooling, which equipment designation is used for determining the leak rate?
Industrial Process Refrigeration
For a belt-driven non-hermetic compressor system, the _____________________ is most likely to leak if the system has not been operated for several months.
shaft seal
When the 30-day repair window has expired and you have to request a time extension from the EPA, what CANNOT be used as a reason to extend the deadline?
A service technician is not available.
You are recovering refrigerant from a piece of equipment you know is leaking...
What is the lowest pressure you recover down to?
0 PSI
Defined by ASHRAE Standard 15, an equipment room sensor is not required for Amonia(R-717) as long as ____
The ventilation system is operated continuously
When verifying the repair of a substantial leak, a follow-up verification test must be performed withing _________ days of the initial verification test.
10
___________________________ indicates low charge in a high-pressure system with a capillary tube
Excessive/High Superheat
In regards to your nitrogen regulator, the pressure relief valve is located ________ of the pressure regulator.
Down-Stream
Heating a compressor reduces _______
the amount of refrigerant in the compressor oil
High Pressure Appliances containing less than 200 pounds of refrigerant must be recovered to a minimum of _______ inches of vacuum.
Zero
After repairing a leak in a system containing 500 pounds or more of refrigerant, a leak check must be performed once every _____ months
Three
This means to evacuate refrigerant from an appliance, or the affected isolated section or component of an appliance, to at least atmospheric pressure, and to temporarily shut down that appliance.
Mothballing
Name one repair that is considered a "major system repair" under EPA's regulations?
Condenser
Evaporator
Compressor
Any repair constituting an open system for more than 15 minutes.