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Apr 2021
2021 Refrigerant Rulemaking
THE REGULATION OF REFRIGERANTS continues
to be a source of great uncertainty in the
commercial refrigeration industry. At the
heart of this issue is the potential for
carbon emissions from hydrofluorocarbon
(HFC) refrigerants and their collective
contribution to climate change.
Read More
Apr 2021
Troubleshooting: Too Young to Die
We had a compressor fail that was just seven years
old. Some people would say “that is an old compressor,”
however, for this application, it is not.
Refrigeration compressors should give many years of service
unless there are unusual circumstances. A brief description
of the system follows.
Read More
Apr 2021
Training Corner: Refrigerant Manufacturer Looks to the Future with Webinar Series
Every year the refrigerant landscape
changes with new rules and regulations.
Every day HVACR techs find
themselves in the field tackling jobs that
require them to not only be aware of proper
regulations but also use them correctly.
Read More
Apr 2021
Last Word: The Change Necessary to Evolve
Itook the back page this month to stretch my verbal legs
a bit. I have a few big announcements that I realize are
better suited for the front of the issue, but sometimes
space constraints in magazine production terms have the
final say—and so this month, so do I.
Read More
Apr 2021
Leading Off: Something in the Air
If you saw EVP Lori Schiavo’s article in the March issue of the RSES Journal, you know that there was a high level of carbon monoxide in the office in February. The reading that the gas company representative got was 50 ppm. In doing some research for this article, I found varying opinions on what levels are CO exposures are acceptable. None of them say that 50 ppm are good for long periods of time.
Read More
Mar 2021
Cast Iron: When, Where, and Why?
The internet has changed every aspect of the way we live.
More and more people are doing their shopping on the
internet; need shampoo, order online; need laundry detergent,
order online. How does it affect the HVAC and
plumbing industry?
Read More
Mar 2021
Bringing Safety and Sustainability to Ice Machines
According to a study from John
Hopkins Bloomberg School of
Public Health, a single foodborne
illness outbreak at a fast-casual establishment
could cost a quick-service restaurant between
$6,330 and $2.1 million, casual-dining operations
between $8,030 and $2.2 million and
fine-dining establishments between $8,273
and $2.6 million per incident.
Read More
Mar 2021
Understanding the Basic Refrigeration Cycle
Ensuring refrigeration
systems operates effectively
and efficiently requires a
fundamental understanding
of the refrigeration cycle
and how each component
works together.
Read More
Mar 2021
Relays and Contactors: Part 2
Impedance relays are also called lock-out relays, reset relays, and anti-short cycle controls. All of these terms refer to the same device and the same function. Figure 5-15 shows a typical lock-out relay circuit.
Read More
Mar 2021
Troubleshooting: Too Hot to Handle
I had a call for a routine furnace inspection. The customer
said “It’s just a furnace check-up, everything is fine. “This
is a 1,400-sq-ft, three bedroom house with a 75,000-Btuh
80% furnace and a 3-ton A/C. Maybe a little oversized for
the San Antonio, TX area, but in the ballpark.
Read More
RSES is the leading education, training and certification preparation organization for HVACR professionals. RSES publishes various comprehensive industry training and reference materials in addition to delivering superior educational programs designed to benefit HVACR professionals at every stage of their careers through instructor-led training courses, online training for HVAC, educational seminars, interactive CD and DVD products, industry-related reference manuals, and helpful technical content through Service Application Manual chapters, the RSES Journal, the RSES Journal archives and feature articles, as well as web-exclusive features.
Beginning with basic theory and extending to complex troubleshooting, training courses covering refrigeration and air conditioning, heating, electricity, controls, heat pumps and safety may be conducted in a classroom environment or though self study. RSES publications may be purchased by schools, contractors, manufacturers or any other industry group wanting to conduct comprehensive training programs. Seminars covering air conditioning troubleshooting, electrical troubleshooting, compressor training, condenser training, refrigerant piping practices, DDC controls, and more are held in various cities across North America.
Select training programs offer Continuing Education Units (CEUs) and NATE Continuing Education Hours (CEHs).
In addition, RSES offers industry certification preparation materials for refrigerant handling (EPA Section 608), R-410A and North American Technician Excellence (NATE) examinations.
RSES’ monthly magazine, RSES Journal, serves HVAC contractors, service technicians, students, operations/maintenance managers, engineers and technicians who work in the residential, light commercial, commercial and institutional markets on air conditioning, warm-air heating, refrigeration, ventilation, electrical, ice machines, chillers, hydronic heating, piping, refrigeration control and energy management, building automation, indoor air quality and duct cleaning, and sheet metal fabrication equipment and/or systems.
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