The HVACR service technician uses an array of tools and test
instruments to diagnose problems and evaluate system
performance. One tool that is readily available, inexpensive
and yet rarely used to...
On November 15, 2017
A solenoid valve with a built-in check valve is designed to replace
a liquid line solenoid valve in parallel with a check valve for
reverse flow. This valve may be applied in the liquid line of...
On March 2, 2017
With our recent introduction of the Smart Service Tool Kit, there
have been many questions asked and answered. Let's review the ones
pertaining to buying and general details here: Q1: When will
On August 3, 2016
To ensure peak performance, solenoid valves must be selected and
applied correctly; however, proper installation procedures are
equally important. Aside from correct installation, troubleshooting
On July 19, 2016
We all know that a properly charged refrigeration system utilizing
a receiver must have a liquid and vapor interface in the receiver.
And we also know that saturated pressure and temperature...
On July 5, 2016
In air conditioning and refrigeration applications, the ability of
the thermostatic expansion valve (TEV) to match refrigerant flow to
the rate at which refrigerant can be vaporized in the...
On June 21, 2016
Parker's HVACR Tech tips cover service tips for the HVACR
technician servicing commercial refrigeration systems as well as
HVAC for both commercial and home. The following are
service tips for...
On May 24, 2016
Calculating Superheat and Subcooling requires cumbersome equipment,
writing down temperature and pressure readings, converting pressure
readings using a PT chart, and finally subtracting totals to...
On March 16, 2015
Lubricant-refrigerant mixture breakdown causes sludge formation and
other corrosive materials that will hinder the normal operation of
compressor valves and control devices in refrigerant and...
On August 1, 2014
Climate control is the technology of controlling fluids and gases
to vary temperature. Parker provides comfort, convenience and
control through refrigeration and air conditioning. Key
On July 1, 2013