Exam (elaborations)
Michigan mechanical exam- A C service and Refrigeration questions with verified solutions 2025-
- Course
- Institution
Michigan mechanical exam- A C service and Refrigeration questions with verified solutions 2025-
[Show more]
Content preview
Michigan mechanicalexam- A/C service and
Refrigeration
questions with verified
solutions 2025-
2026(100% pass)
flash-gas - answer The presence of ___________ in the liquid
lines reduces the efficiency of the refrigeration cycle,
leads several expansion systems to work improperly and,
increases superheating in vapor.
A1 - answer According to ASHRAE refrigerant safety
classification standard which designation would be the
safest ?
Attach DOT classification tags - answer When transporting
cylinders containing used refrigerant, DOT requires that
you ?
CFC - answer What compound has the highest ozone
depletion potential (ODP) ?
,yellow tops and gray bodies - answer Approved refrigerant
recovery cylinders can be identified by which color code ?
ARI 700 - answer Under EPA's regulations, what standard
must reclaimed refrigerant meet before it can be resold ?
a low pressure vapor. - answer The state of refrigerant
entering the compressor of a refrigeration system is ?
a condenser or, an evaporator - answer Replacement of
________________ is a repair which would always be
considered major under EPA's regulations.
recycling. - answer Refrigerant that is cleaned using oil
separation and single or multiple passes through devices,
such as replaceable core filter-driers, which reduce
moisture, acidity, and particulate matter is
___________________.
electronic leak detector - answer Which leak detection
method is most effective for locating the general area of
the small leak ?
PSIG and inches of mercury - answer A compound pressure
gauge for the low side of a system measures pressure in ?
traces of oil - answer When first inspecting a hermetic
system known to be leaking you should first look for ?
, only charge with nitrogen vapor and use a regulator. -
answer When charging a system with nitrogen
______________.
saturated or sub-cooled high-pressure liquid - answer
Refrigerant entering the Thermal Expansion Device of an
R-22 heat pump is ___________.
hydrochloric and hydrofluoric acid or, phosgene gas. -
answer At high temperatures R-12 and R-22 can
decompose to form _____________.
oxygen deprivation - answer According to ASHRAE
Standard 15 a sensor and alarm are required for type A-1
refrigerants to sense ___________.
sight glass - answer A __________ is not a method presently
used for checking the fill level in a recovery tank.
number of cylinders of each gas - answer Dot regulations
49 CFR requires that the ___________ be recorded on the
shipping paper for a hazard class 2.2 non flammable
compressed gas.
wearing a respirator - answer Which of the following is not
a standard recommended safe work practice when
recovering refrigerants ?
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller BRAINBOOSTERS. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $14.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
50843 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now