Climate Control

HVACR Tech Tip: Considering a Refrigeration System Retrofit? Part 3

This is the third part of a three-part series of posts on high-glide refrigerants for refrigeration system retrofits. Part 1 covered calculating super-heat and subcooling with glide, and control of...
On June 20, 2017

HVACR Tech Tip: Considering a Refrigeration System Retrofit? Part 2

This is the second part of a three-part blog series on high-glide refrigerants for refrigeration system retrofits. Part 1 covered calculating superheat and subcooling with glide, and control...
On June 1, 2017

HVACR Tech Tip: Considering a Refrigeration System Retrofit? Part 1

Refrigerant choices for refrigeration systems are undergoing significant change, including choices for retrofits and new systems. This article is Part 1 of a 3 part series addressing such retrofits,...
On May 10, 2017

HVACR Tech Tip: Basic Troubleshooting Given Three Measurements

What if you are only given 3 measurements? As HVACR technicians, you need some ideas in your back pocket for basic troubleshooting in a refrigeration system. How about a simple chart that helps you...
On April 24, 2017

HVACR Tech Tip: What You Need to Know About Flooded Head Pressure Control

Below are six questions that will help you learn most of what you need to know about flooded head pressure control.   1. Why do you need a receiver? The flooded head pressure control valve maintains...
On April 4, 2017

HVACR Tech Tip: Using Bi-Directional Solenoid Valves for Heat Pumps

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

HVACR Tech Tip: Principles of Thermostatic Expansion Valves

In order to understand the principles of thermostatic expansion valve operation, a review of its major components is necessary. A sensing bulb is connected to the TEV by a length of capillary tubing...
On February 22, 2017

HVACR Tech Tip: Electric Head Pressure Control Recommendations

When designing a system using stepper motor style electric valves, such as CDS or SDR valves and A8-to-CDS conversion kits, in head pressure control applications additional precautions and...
On November 19, 2016

HVACR Tech Tip: When Should a Catch-All Filter-Drier be Changed?

It is important to locate a filter-drier in a refrigeration system. Its role is to remove moisture from the refrigerant and lubricant by absorbing and retaining moisture deep within the...
On September 28, 2016

HVACR Tech Tip: How to Convert a Parker A8/SPORT Valve to a Sporlan Electric CDS Valve

With more and more supermarkets upgrading from mechanical valves to the superior performance of CDS valves, knowing how to install a Sporlan CDS Conversion Kit will help save considerable time...
On August 23, 2016

HVACR Tech Tip: 12 Solutions for Fixing Common TEV Problems

When responding to a refrigeration service call at a supermarket, the refrigeration technician immediately plays “problem percentages” upon entering the store. Most refrigeration equipment breakdowns...
On August 9, 2016

HVACR Tech Tip: Troubleshooting Solenoid Valves in Refrigeration Applications

​To ensure peak performance, solenoid valves must be selected and applied correctly; however, proper installation procedures are equally important. Aside from correct installation, troubleshooting the...
On July 19, 2016

HVACR Tech Tip: Can You Have Subcooled Refrigerant in the Receiver?

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

HVACR Tech Tip: Where Should the TEV External Equalizer Be Installed?

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

HVACR Tech Tip: Refrigerant Piping Expansion and Contraction

All refrigeration piping materials are subject to changes in temperature and will expand and contract with temperature change. Installation techniques must allow for expansion and contraction changes,...
On June 7, 2016

HVACR Tech Tip: Guide to Servicing Blended Refrigerants

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

The Top 10 Most-Read Technology Blog Posts of 2015

It was a roller coaster year for the global industrial manufacturing and engineering community. At Parker, we are making a difference by sharing knowledge across each of our technology platforms to...
On January 4, 2016

Compressor Overheating Is the Number-One Refrigeration Problem

Many refrigeration compressors break down simply because they overheat. There are two main reasons why overheating can have such a devastating effect on compressors: Loss of the lubricating properties...
On December 17, 2015

Six Reasons Why CDS Conversion Reduces Costs

Have you considered a CDS valve conversion for improving performance and reducing costs on your refrigeration equipment? Over the past ten years, Parker Sporlan has completed tens of thousands of...
On September 21, 2015

Head Pressure Control for Supermarkets

Head pressure control on supermarket refrigeration systems is used to maintain a minimum high-side-pressure to low-side-pressure relationship. Low side pressures are the result of...
On April 7, 2015