Evaporators - Articles - Page 2

Diagnosing Refrigeration Restrictions: Similar Symptoms With Different Causes

Problems can occur in both the low and high sides of the system

John Tomczyk

October 1, 2018

Refrigeration systems can become restricted in both their high and low sides for a variety of reasons.

BTU Buddy 186: A Frozen Evaporator

Bill Johnson

September 17, 2018

Bob and Tim are looking at a system that has a frozen evaporator coil. The system is in a home. They are talking about what has happened to the system and what to do about it.

Troubleshooting the Root Cause for a Refrigerant Starved Evaporator

Proper diagnosis is necessary to prevent further problems

Joe Marchese

June 4, 2018

While troubleshooting and repairing refrigeration systems, a common problem is a starved evaporator, meaning not enough refrigerant is entering the evaporator for the heat load placed on it.

Oil in the Evaporator — Not Very Slick

An evaporator internally saturated with refrigerant oil causes many system headaches

John Tomczyk

April 3, 2017

In a perfect scenario, the oil in a refrigeration or air conditioning system would stay inside the compressor’s crankcase to lubricate the compressor’s moving parts. However, because of ever-changing heat loads on the system and varying system conditions there is no such thing as a perfect system in the real world.

Refrigeration Theory

Heat has its own laws, called the laws of thermodynamics

Mike Taitano

February 6, 2017

The first point to understand about refrigeration theory is that heat is energy, and it can be made to move. If enough heat is removed from a glass of water, the water will freeze to ice. When that heat is allowed to move back into the ice, the ice will melt.

Ice Breaker: Troubleshooting an Iced Evaporator

Spotting an iced-up evaporator is easy, though determining how it got that way is tougher

Joe Marchese

July 4, 2016

An iced-up evaporator is a common service call for any service technician working in this industry. Generally, determining this is the cause of the system problem is rather easy. But what caused the evaporator to ice up may not always be obvious.

The Professor: Understanding Compressor Amperage Curves

Table-style charts are easy to read and provide valuable information about system function

John Tomczyk

February 1, 2016

Compressor performance curves can provide a service technician with the Btu pumping rate (capacity), mass flow rates, operating amperage, and operating wattage of a compressor when the suction pressure and head pressure are known for the system.

Next Generation CDS Conversion Kits Introduced

SPORT evaporator pressure regulators easily converted to stepper motor-driven CDS valves

August 31, 2015

Sporlan has released its next generation of CDS conversion kits solution for converting SPORT evaporator pressure regulators on refrigeration equipment into stepper motor-driven CDS valves. According to Sporlan, nearly all A8 and SPORT pressure regulators can now be converted into Sporlan stepper motor valves.

The Professor: Bluetooth Remote System Monitoring

Handy Tool for Multitasking Techs

John Tomczyk

January 12, 2015

Bluetooth technology is a wireless standard that exchanges data wirelessly over short distances (100 meters) using radio wave frequency transmissions.

Ice Breaker: Evap. Pressure Regulators

A Look at Familiar Refrigerant Flow Control Device

Joe Marchese

February 3, 2014

Joe Marchese explains the refrigerant flow control device, which prevents the refrigerant pressure in an evaporator from operating below a minimum value, and discusses how to select the right one for the job.