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RES has welcomed a new Dunham Bush AVXB470 into our fleet!

Posted on October 4, 2019 by Lena Frenkel

RES is happy to welcome a brand new Dunham Bush AVXB470 into our expanding rental fleet. 

Here are a few quick facts about this new 470 Ton chiller: 

  • High Efficiency Screw Chiller
  • Inverter Driven Compressor
  • Flooded Shell and Tube Evaporator
  • Advanced Microprocessor Controller
  • Unique Low Noise Control Design
  • Suitable for Standard or High Ambient Application
  • Environmentally Friendly
  • AHRI Certified
  • R134a

Here it is being lifted onto it's trailer.  (Take note of how big it is next to the RES guys!)

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Custom Fabricated Stacked Chiller Skid

Posted on April 19, 2019 by Lena Frenkel

We received a request from a chemical company to create a custom fabricated rental skid to fit in the remaining space of their containment dike.

RES laid out a stacked configuration in order to maintain space requirements. Fabrication begins in the RES shop.

The stack consisted of a bottom frame to hold a mixing tank and pumps, and a top frame onto which a chiller would be mounted.

This picture shows the first stage of completion in our yard. Please note the OSHA approved ladder and hand railing.

The separate components of this package are headed towards the customer’s chemical plant.

Here are the pumps mounted under the chiller on the bottom half of the skid. Please note the containment wall in the foreground of the picture.

The completed install in the limited space available to us. The completed skid includes an 80T Dunham-Bush chiller, one chill water pump, one process pump, and a 1000 gallon mix tank with all electrical power circuits, and controls.

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Mechanical Room Rebuild After A Fire

Posted on April 1, 2019 by Lena Frenkel
Due to a fire in this mechanical room, RES immediately placed a temporary chiller.
The room had been completely burned beyond repair and the owner contracted with RES for a total rebuild of the mechanical room.
The only thing surviving the fire was the domestic circulating pumps.
Project in progress – New domestic boilers being set in place.
New expansion tanks
Fabrication of piping. This property has a 2-pipe system and has been reinstalled with an auto switchover control system.
Chilled Water Pumps.
This photo contains the expansion tanks and the buffering tanks which will allow the auto switchover process.
New 90% efficient Lochinvar Crest condensing boilers.
New air cooled chiller being set into position.
Project included installation of 2 York Air Cooled chillers.

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Chiller Repair vs. Chiller Replacement - What's your best option?

Posted on March 19, 2019 by Lena Frenkel

Even with regular preventative maintenance, chillers inevitably age and have to be replaced. As these machines age, they become less efficient, less reliable, and break down more often.  Balancing the costs of necessary repairs with the need for replacement can be challenging. New chillers come with a high initial price tag, even if they do deliver strong return on investment in the long-term. So how can you be sure when an HVAC repair is no longer worth it, and a full replacement is needed?

There are quite a few things that you should think about to determine your need for a replacement chiller. Some of the most important questions to ask yourself are:

  1. Are energy bills rising unexpectedly?
  2. Are repair costs getting out of hand?
  3. Do the building occupants believe it’s either too hot or too cold?
  4. Is the chiller over 20 to 25 years old?

An older HVAC system that’s nearing the end of its lifespan will begin to need frequent repairs, and will start to raise energy costs. These problems could be caused by leaks throughout the ventilation system which would lead to poor heating or cooling performance. There comes a point where this is no longer profitable for your business, and a newer system will give you the desired cost-savings.

How to extend the life of your chiller-

If your chiller does not yet need to be replaced, working to extend the life expectancy can have a major impact on the bottom line. Preventative maintenance agreements are one of the best ways to do this. These agreements keep you ahead of the mechanical issues before they arise, which minimizes disruptions, and keeps your tenants happy. Keeping all of your systems at peak performance extends the lifespan of the equipment, reduces energy costs, and allows you to postpone large investments in new equipment for as long as possible.

What to consider if your chiller breaks down completely-

Sometimes an emergency situation happens, and a chiller breaks down past the point of repair.  A rental chiller is an excellent way to quickly get you back up and running at full capacity. With same-day delivery available, a rental chiller can be your lifeline during unexpected events. RES provides you with peace of mind with 24/7 support for unplanned situations. 

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Knowing When It's Time To Replace Your Coil

Posted on March 11, 2019 by Lena Frenkel

RES is proud to be located in the Dallas Fort Worth area of Texas and while we do have hot summers, we also can have some pretty cold winters. Most people see signs reminding them to be careful while driving on frozen roads, or to make sure they leave a faucet dripping to prevent frozen pipes but how often to building engineers, or maintenance get reminded to check for a frozen up coil?

While most people don’t look at the coil in their unit very often, it is imperative to check it after a particularly cold day (below 32*F). Cold weather could freeze multiple areas in your coil which creates pressure between the areas; this causes the tubes to swell and eventually burst. While a frozen coil doesn’t always burst, when it does it will not only leave your unit down but also makes a big mess.  

Here are a couple ways to determine if your coil could be frozen up, and need either repair or replacement.

  1. Visual Inspection
    1. First and foremost, is your unit running properly?
    2. Does everything look like it’s in order? Is there water on the floor or overflowing the drain pan?
  2. Check the makeup water in your chill water loop
    1. Water filling the loop could mean that you have a frozen coil

What should you do next?

  1. If you are unsure if your coil is frozen, or just want a second opinion - call an HVAC professional. We are trained to look at coils and determine whether it is a candidate for repair, or if it has to be replaced due to freezing up, or simply due to old age.
  2. If you are sure that your coil is frozen, and needs to be replaced – first and foremost find the original design of the coil. It is important to have the measurements of the frozen coil.
  3. Work with a qualified manufacturer’s rep that has experience in coil replacement to determine if there is a coil design that could better suit your needs. They will work with you to determine what is important to you, such as improving your indoor air quality with different materials of build. A great suggestion would be to replace drain pans with a stainless steel option, and installing UV lighting.

RES specializes in coil replacement, and will work with you to make sure that you feel comfortable with the coil repair or replacement.  Call us today – 817-857-9600

 

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Process Plant Chiller Installation Pt. 2

Posted on October 3, 2018 by Lena Frenkel
The Dunham Bush Chiller being delivered to the job site. 
Ready to be lifted off and placed onto its concrete pad.

RushCo has a zero spill policy. We catch all glycol and antifreezes.
The new Dunham Bush Air Cooled Screw Chiller (AVX-A 280T) sitting on its concrete pad which was poured by one of our subcontractors.
Factory start up done by our own Dunham Bush Factory Authorized Start-Up Technician, Randy.

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