PAPER 2026 QUESTIONS WITH ANSWERS
GRADED A+
◍ Vapor.
Answer: What state has the highest temperature solid liquid water vapor
◍ Federal law.
Answer: Section 608 of EPA Clean Air Act is
◍ 10 inches of hg vacuum.
Answer: A technician has to make a major repair in an appliance having
1000 pounds of r407c he must evacuate the system to which of the
following levels
◍ All cooling systems containing more than 50 lbs. of refrigerant must be
repaired when the annual leak rate exceeds___?.
Answer: 15%
◍ Hydrochloric and hydrofluoric acids.
Answer: At high temperatures what do CFCs and HCFCs decompose to
◍ Nitrogen.
Answer: Example of refrigerant that you don't need section 608 to purchase
◍ Oil breaks down in the presence of water (poe).
Answer: Hydrolysis is when
◍ Recovery device.
Answer: What piece of equipment should be checked for leaks
◍ Evaporator.
Answer: After the refrigerant leaves the purge unit where does it go
,◍ Purge unit.
Answer: What can only be found in type 3 appliances
◍ Send it to a certified reclaiming facility to try to reclaim it.
Answer: If we find refrigerant that is mixed what must we do
◍ R744.
Answer: What is a very high pressure refrigerant
◍ 1995.
Answer: In the United States when we're all CFCs phased out
◍ False.
Answer: True or False there are no replacements for r22 refrigerant
◍ What date was the sale of CFC's & HCFC's restricted to technicians certified
in refrigerant recovery?.
Answer: November 14, 1994
◍ R600a,r290.
Answer: New household refrigerators and freezers can be factory charged
with
◍ Freezers.
Answer: What appliances do section 608 regulations apply to
◍ Refrigerant can not be called "reclaimed" unless it: - ..
Answer: has been chemically analyzed and the refrigerant meets the
ARI-700 standard.
◍ What date was CFC's phased out of production?.
Answer: December 31, 1995
◍ Leaks from areas with gaskets or fittings.
Answer: On low pressure chillers water is most likely to leak into the
refrigerant system through
◍ Gross cylinder weight.
Answer: What method of monitoring fill levels is most effective
,◍ Low ambient temperature.
Answer: A crankcase heater is often used to prevent refrigerant from mixing
with compressor oil during periods of:
◍ 10%.
Answer: When the annual leak rate exceeds _____, all comfort cooling
systems with more than 50lb of refrigerant must be repaired.
◍ What is the total number of questions in the Universal Certification Exam?.
Answer: 100 multiple choice questions.
◍ Section 608 of the Federal Clean Air Act requires technicians to what?.
Answer: Recover all refrigerants.
◍ Vent the nitrogen.
Answer: If we use nitrogen to pressurize a system or blow debris out we can
◍ Water cooled recovery unit.
Answer: During refrigerant recovery local municipal water supply is used to
cool the
◍ What is an example of a Type III appliance?.
Answer: Low pressure chiller.
◍ What date was recovery equipment required to be certified by a lab, &
achieve higher evacuation levels, & have low loss fittings?.
Answer: November 15, 1993
◍ TXV.
Answer: Thermostatic Expansion Valve
◍ AHRI UL.
Answer: Recovery devices are tested and certified by
◍ What is the focus of the revised exam?.
Answer: Practical knowledge rather than dates and times.
◍ The epa.
Answer: Who does not need to maintain proper records of refrigerant
, ◍ Reciprocating.
Answer: Open-drive compressors are typically which of the following type
of compressor
◍ No.
Answer: Does the refrigerant change state in the compressor
◍ R11,r12.
Answer: Examples of CFC
◍ What are Cooling Towers?.
Answer: They are heat removal devices used to transfer process waste heat
to the atmosphere.
◍ What temperature should be attained when removing oil from a low pressure
system to ensure a lower level of refrigerants in the oil?.
Answer: 130-Degrees F
◍ removed by the recovery system.
Answer: After refrigerant liquid has been recovered from a appliance any
remaining vapor is
◍ 90% or 4 inch vacuum.
Answer: When performing active recovery and the compressor is working
we must recover what levels
◍ Microns.
Answer: What units are used to measure deep vacuum
◍ What are HydroChloroFluoroCarbons?.
Answer: Commonly known as HCFC's, they are a group of man-made
compunds containing hydrogen, chlorine, fluorine, and carbon.
◍ 2.5 hg.
Answer: According to ASHRAE Guideline 3 the system should be checked
for leaks if during a standard vacuum test the pressure in a system rises from
1 mm hg to a level above