Tuesday, December 21, 2010
Sunday, December 19, 2010
Traditional Indicators color: GREEN & YELLOW
Tri-color Indicators : BLUE, PURPLE & PINK
Traditionally, moisture indicators have been green/yellow wafers that said the system was either “dry” (green) or “wet” (yellow). But, this simply does not go far enough. Here’s why. All moisture indicators share one common objective: to sense and report just how much water is in the system’s circulating refrigerant. A paper wafer in a sight glass changes color as the moisture content reaches potentially damaging levels. Those traditional green/yellow indicators do not, however, show percentage increases along the way; that is, they do not provide any true insight into the ongoing increases in moisture content. They simply announce, for example, that the system is “wet.” And by the time this “wet” indication is made, it may be too late to avoid damage to the compressor or other system components. There are other shortcomings as well. The green/yellow moisture indicators work only at higher levels of moisture, about 10% relative humidity (RH). Paper indicators are susceptible to damage from brazing during installation. And their color can actually wash out under wet conditions, leaving behind a useless piece of blank paper.
Alco Controls designed and developed the HermeticMoisture Indicator (HMI), the most sensitive indicator on the market. Instead of the old green/yellow papers, the HMI features a tri-color molded disk wafer dial with blue (dry), purple (caution) and pink (wet) indications. The addition of the purple caution color alone gives the HMI a critical advantage over previous indicators. It alerts technicians early on to rising moisture levels, allowing them to take corrective action before any damage occurs. And as the colors continue to change as moisture content rises, the HMI allows those same technicians to determine conditions more accurately, taking the guesswork out of their monitoring activities.
The Hermetic Moisture Indicator works by utilizing a unique salt that holds more water than a traditional gree/yellow indicator salt. This salt also changes through a wider color range than the green/yellow salt. Additionally, the indicator itself is thicker and together these attributes allow for a wide range of rich colors that enhance the ability to better understand the amount of water in the refrigerant. In addition, the HMI, along with all other moisture indicators, does not simply sense parts per million (ppm) of water in a system. Instead, it measures relative humidity. This is a significant distinction. Why? Because, for example, a reading of 50 ppm in R12 is extremely dangerous, while 50 ppm in R-410A is not. The difference is in the refrigerants. The new refrigerants, along with their POE oils, can physically hold more water; and since they operate at low ppms, this translates into extremely low relative humidity levels, in the 2% to 7% RH range.
There is a misconception across the HVACR industry that 10% RH moisture detection is sufficient. That’s an assumption that can lead to a dangerous – and expensive – false sense of security. At 3% RH in many HFCs, a green/yellow indicator will show a green color, pronouncing the system is still “dry.” In fact, it is actually at risk of acid formation from the breakdown of the POE oil. At 10% RH moisture detection, the system has already been contaminated with moisture and acids, and will need to be cleaned. That could mean anything from replacing the filter-drier and exchanging some or all of the oil in the system, to replacing a compressor or multiple compressors. Actually, the old green/yellow indicators show a “dry” reading as high as 7% RH. And a 7% RH reading in R-410A means there are nearly 300 ppm of water present. Emerson Climate Technologies’ studies have shown that acid begins forming at approximately 75 ppm, when water starts to turn POE oils back into acid. That means the newer refrigerants, with their high moisture content, see severe problems to the lubricant at 100 ppm. Any acid formation can be a problem, of course. So detecting moisture content as soon as possible is crucial to protecting the life of the system. Again, traditional green/yellow indicators fall short. By the time the indicator goes off, damage is already occurring to the lubricant. So it’s an indication that doesn’t actually indicate anything. Effectively monitoring an HVACR system for water content is already a critical step in assuring a long and useful life for the system. But it’s a step that cannot be taken if the view to the system – the moisture indicator – does not provide timely, accurate readings of the moisture level in the refrigerant. And as new refrigerants emerge, today’s traditional green/yellow solutions will fail to offer the insight and innovation needed to keep pace with the systems of tomorrow.
Lets look at the review from http://www.achrnews.com.
The Emerson AMI moisture indicator features a take-apart design for easier repair and the A-IHL saddle design moisture indicator is ideal for large diameter tubing.
Monday, November 01, 2010
Wednesday, October 27, 2010
In a constantly evolving industry, Emerson ensures that you stay ahead by bringing you tomorrow's technology --- today!
The new TI valves feature the highest maximum working pressure in the market, which make it the preferred choice for handling the toughest applications in the market. The new, unique and extremely easy-2-use valve adjustment mechanism makes installation and service job seem like child's play.
The superior superheat control means more stable and efficient operations for original equipment manufacturers, contractors and end-users.
The new generation TI- series TXV brings unparalleled performance and value to our customers around the world.
Make sure the EK filter drier you're installing is the one made by Emerson. Look for the specially-designed Emerson hologram with unique graphic patterns and serial numbers.
Imitations may look authentic, but they cannot deliver the long-lasting protection from moisture and contaminants you and your customers expect.
- shortened compressor life
- stuck expansion valves
- shorted system component life
- blocked coils
- system leaks
Thursday, October 21, 2010
Friday, September 24, 2010
St. Louis, September 21, 2010 – Emerson Climate Technologies Inc., a business of Emerson (NYSE: EMR), today announced the launch of the new FFAS Condensing Unit for commercial refrigeration walk-in coolers. Designed to work with multiple refrigerants, the FFAS unit accommodates R-22, R-404A, R-507, R-134a and R-407C. The unit also features a high-efficiency Copeland Scroll® compressor and Copeland PerformanceAlert™ diagnostic electronics.
“With the phase-out of HCFCs and the shift to HFC refrigerants that began in 2010, wholesalers, contractors and end-users alike are facing new challenges,” said Bob Labbett, vice president of marketing, Distribution Services Division for Emerson Climate Technologies, Inc. “Flexibility is a key driver here, so we’ve been focusing on developing products rated for multiple refrigerants for the past two years.”
“The multi refrigerant a...."
ST. Louis, September 23, 2010 – Emerson Climate Technologies, Inc., a business of Emerson (NYSE: EMR), participated in the International Council of Air-Conditioning, Refrigeration, and Heating Manufacturers’ Association (ICARHMA) Annual Meeting last month to join a panel discussion on refrigerants. Panel participants, which included refrigerant manufacturers, original equipment manufacturers and Emerson representing components makers, discussed next generation low GWP refrigerants and HVAC industry imperatives.
According to ICARHMA, the purpose of the refrigerants panel was to provide information on and to generate discussion within ICARHMA Council Members about the current global political climate related to hydrofluorocarbons (HFC) and potential successor refrigerants to HFCs
In his presentation Emerson enginee...."
Wednesday, September 22, 2010
Tuesday, September 21, 2010
Wednesday, September 15, 2010
Today s refrigeration industry is more dynamic than ever and requirements for efficient solutions that minimize the environmental impact continue to get stronger. Emerson Climate Technologies has stayed abreast of those changes with ambitious research and development activities within the last years. Chillventa 2010 is the perfect platform to now introduce the innovative solutions answering the market requirements.
Tuesday, September 14, 2010
Sunday, September 12, 2010
Wednesday, September 01, 2010
Thursday, August 26, 2010
Thursday, July 29, 2010
The quest for excellence and the desire to make a difference is universal - be it a professional or a student. At Emerson Climate Tehnologies, we have instituted the Emeson Cup to recognize and celebrate exceptional talent accross the Air-Conditioning & Refrigeration industry. If your project design is eco-friendly, energy-efficient or innovative, showcase it at the Emerson Cup - one of the biggest pan-Asian industry awards.
Tuesday, July 27, 2010
Emerson's oil controls monitor oil levels throughout the refrigeration systems. The line includes:
* Suction accumulators
* Oil reservoirs
* Mechanical oil level regulators
* Oil level control systems
* High efficiency centrifugal oil controls
* Oil filters
* Acid test kits
Monday, July 26, 2010
Emerson refrigeration solenoid valves have the lowest external leakage rates in the industry, are less susceptible to scoring, don't hold residual magnetism, and provide trouble-free operation due to their fail-safe design.
Emerson's coils for solenoid valves feature compact designs, interchangeable housings, and easier-to-use innovative coil clips. Emerson's coils snap into place without requiring screws or tools. The coil windings are insulated to provide shock and vibration protection. The ASC2, in particular, is designed to provide weather protection.
The Emerson Solenoid Multi-Purpose Tool is a magnetic tool that operates a solenoid valve without having to energize the coil. It has a spanner wrench that enables easier valve disassembly while protecting the enclosing tube. Furthermore, it is an adjustment tool that quickly opens a valve with manual stem.
Saturday, July 24, 2010
Friday, July 23, 2010
Troubleshooting HVACR Systems Using Superheat and Subcooling - Service and Maintenance - Extra Edition - Air Conditioning, Heating & Refrigeration NEWS
Friday, June 25, 2010
Sunday, June 20, 2010
Tuesday, May 11, 2010
* One coil fits all valve sizes
* Extended ends for easy installation
* Long life molded coils provide water, shock and vibration protection in coil winding
* Low pressure differential required for full opening
F Flare SAE
5 connection size 5/8"
VLC no coils / sold separately
Friday, April 30, 2010
Monday, April 05, 2010
FAKES & REALS: Since both boxing, labelling and physical appearance look like the originals…by taking a closer look it is possible to clarify whether it is a fake.
REALS vs FAKES :
Since both boxing, labelling and physical appearance look like the originals.... by taking a closer look it is possible to clarify whether it is a fake. At first glance it can be hard to determine when something is real and genuine. Often, the imitation is eagerly chosen to cut expenses. When it comes to quality, durability and efficiency, this ’’cheap’’ solution is likely to be the most expensive. Your reputation means everything. Stand with us in eliminating fake products.
Tuesday, March 30, 2010
There are three distinct design differences between and R-22 and R-410A compressor:
* Different Oil: Because mineral oil, normally used in R-22 compressors, is not miscible with HFC refrigerants such as R-410A, Copeland uses a synthetic Polyol Ester Oil (POE) in R-410A approved compressors.
* Reduced Compressor Displacement: A pound of R-410A has approximately the same heat carrying capacity relationship to R-22 as R-22 has to R-12, therefore, the compressor displacement has to be reduced approximately 40% for a given motor horsepower. Using a compressor designed for R-22 to pump R-410A would overload the motor and cause protector trips.
* Higher Shell Burst Pressure Requirement: At any given saturated temperature, R-410A has approximately 60% higher pressure than R-22, which require compressor shells to meet this higher pressure requirement.
Monday, March 29, 2010
Compressor Modulation Offers Efficiency, Reliability, and Comfort - Feature Articles - Extra Edition - Air Conditioning, Heating & Refrigeration NEWS
Friday, March 26, 2010
Monday, March 22, 2010
Friday, March 12, 2010
Tuesday, February 23, 2010
In this video, filmed by the ACHR NEWS at the 2010 AHR Expo, Al Maier describes the newest Emerson electronic valve and controller to optimize refrigerant flow in air conditioning and refrigeration systems.
Science & Technology
Monday, February 22, 2010
Thursday, February 18, 2010
Friday, February 12, 2010
Wednesday, February 10, 2010
Tuesday, February 09, 2010
Monday, February 08, 2010
The Professor: Oil Safety Controllers and Their Circuits - Feature Articles - Extra Edition - Air Conditioning, Heating & Refrigeration NEWS
REFRIGERATION BASICS: Optimizing System Performance Using a TXV | thermostatic expansion valve (TXV) | The thermostatic expansion valve (TXV) controls only one thing: the rate of flow of liquid refrigerant into the evaporator
The thermostatic expansion valve (TXV) controls only one thing: the rate of flow of liquid refrigerant into the evaporator.
Saturday, February 06, 2010
Friday, February 05, 2010
Pilot operated, 2-way normally closed valves. Solenoid actuated shut-off valves. Ideal for liquid, discharge or suction gas refrigerant service.
- One coil fits all valve sizes
- Extended ends for easy installation
- Long life molded coils provide water, shock and vibration protection in coil winding
- Low pressure differential required for full opening
T copper extended ends
3 connection size 3/8"
VLC no coils / sold separately
Wednesday, February 03, 2010
ALCO TI series of Thermo-Expansion Valves with interchangeable orifices are designed for refrigeration applications such as display cases in supermarkets, walkin/ reach-in coolers, freezers, soft ice cream/ice maker machines, milk tank coolers, transport refrigeration as well as for air conditioning and heat pump systems. TI provides flexibility in selection of capacity and is ideal for those applications requiring compact size with stable and accurate control over wide load and evaporating range.
Tuesday, February 02, 2010
Hermetic design: Fully welded forged brass body. Low leak rates below industry standard. Compatible with new refrigerants and lubricants. Full internal ports reduce line pressure drops to a minimum. Bi-directional flow characteristics. Valve stem cap retained by strap attached to main body. Pressure relief port in cap. Access port connection on body.
Made to approvals. CE and UL Marking.
Friday, January 15, 2010
Thursday, January 14, 2010
- Highest sensitivity moisture indicator available
- A market leading indicator
- Single indicator for all common refrigerants
- Accurate colour calibration at low ppm levels and higher temperatures
- Wide angle viewing / high visibility window for ease of monitoring
- All brass corrosion resistant body for lower leaks
- Solid copper connections
- Maximum working pressure : 680 psig
- UL/CUL file number SA7=4876
Thursday, January 07, 2010
Q: I have a new HMI sight glass that is showing a wet condition, right out of the box. Can I use this in my system and will it give the proper moisture ndication?
A: The element in the sight glass senses the moisture of the atmosphere that it's in. In this case, the air has enough moisture to turn the sensing element pink (wet).
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