Frequently Asked Questions
Frequently Asked Questions
Frequently Asked Questions (BLU)

Frequently Asked Questions (Technical)


FAQ – BLU




1. What is BLU?
  • Kairak’s latest advancement in refrigeration, BLU is a liquid cooled technology that performs on close proximity cooling. Food pan sits very close and even in contact to the divider bar while cooled liquid flows through the divider bar and absorbs the heat from the food. Using this concept and the technique of precise control of the liquid temperature, BLU can exceed NSF standards of 41°F and in some cases 39°F using suggested pans (see Performance Fit section).

2. What inefficiencies does BLU address?
  • This new system does not include any electrical components or wiring within the food well, therefore reducing the chances of contamination or damage to the components and reducing the cost of maintenance and downtime.
  • BLU helps reduce: Damaged electrical components, overworked compressor, risk of leaks, harm to the environment, clogged drain lines and froze drain lines/coils.
  • BLU entirely eliminates: Temperature inconsistencies, frost build-up, defrost cycles, damaged fans and related electrical components, condensate heaters and time clock adjustments.

3. Why was BLU developed?

  • BLU derived from a focus group consisting of key end-users and design consultants, they wanted something that was bullet proof that addressed challenges with current designs available in the market. i.e. defrost, timers and ice build-up, this is what drove the introduction of this new technology.

4. Who is BLU intended for?
  • BLU is intended for high-volume operations who are looking for the next level of performance and want to eliminate operation complexities. We continue to follow through with our customers’ demands as we did more than a decade ago with the invention of our Patented Pan Chiller system. At that time our customers came to us to design a product that would help solve their ongoing challenges with maintaining safe food temperatures. We’ve done it again, but have taken it a step further with the introduction of BLU.

5. Will BLU replace Kairak's current design?

  • Not at this time. BLU was specifically designed focusing on our existing high-volume chains looking to upgrade to a more sophisticated, simplified and reliable refrigeration product. Our current patented design still exceeds the performance of other refrigeration products available in the market place today. We will continue to evaluate and improve our product offering as we move forward and will make a decision then.

6. What Kairak products will incorporate BLU technology?

  • BLU Technology will be offered in Prep Tables, Drop-in Pan Chillers, Equipment Stands(remote only) and our Remote Rack Systems.

7. Does your No Frost, No Defrost, No Fans marketing message mean that there are no fans in the storage base?
  • No. The innovation in BLU is in the unique cooling process within the pan chiller/chiller plates, meaning a fan is no longer needed to enhance the cooling onto the pans. The storage compartment still requires fans to refrigerate.

8. What is Performance Fit?

  • Divider Bars can be custom designed to fit close to condiment pans for optimized cooling performance (39°). This option is ideal for customers who continuously experience challenges with food holding temperatures and are looking to invest in an infallible pan chiller design customized to their pan of choice.


FAQ – TECHNICAL




1. What if there is a leak, is the glycol toxic?
  • The glycol that is used to chill our BLU system is a Propylene Glycol which is a Food Grade Antifreeze and harmless to the environment. FDA approved glycol is used for health and skin products (i.e. baby lotion, cosmetics) in the United States.

2. I have a really rough kitchen crew when it comes to taking care of the equipment, what if one of my cooks punctures the divider bar with a knife/utensil?
  • The material used for the divider bar is 1/8in T6 Al, meaning 1/8in thick heat treated Aluminum, formed from an extremely durable and corrosion-resistant alloy and commonly used in aerospace.

3. Where is the booster coil/evaporator coil cavity?
  • It doesn’t exist. The cooling provided from the new patent pending pan chiller system provides a more precise and uniform control of cooling by means of a single-state (liquid) coolant.

4. How do you get better performance without a fan circulating the air under the pans?
  • BLU is a liquid cooled technology that performs on close proximity cooling. What this means is the food pan sits very close and even in contact to the divider bar while cooled liquid flows through the divider bar and absorbs the heat from the food. Using this concept and the technique of precise control of the liquid temperature, BLU can exceed NSF standards of 41F.

5. Is there copper in the divider bar for cooling?
  • There is no copper located in any part of the divider bars. The divider bars are completely flooded with low pressure glycol running through them.

6. How often are the pump and heat exchanger going to need to be changed/repaired?
  • The small “sealless” pump used in self-contained BLU products has an expected bearing life of 40 years, in fact the medium that the manufacture tests the pump under is glycol. The heat exchanger has no moving parts and consists only of copper and stainless steel.

7. How is the glycol cooled?
  • The glycol is cooled using a brazed plate heat exchanger. The heat exchanger is where the glycol and refrigerant meet. Glycol is circulated on one side of the flat plate while the refrigerant is circulated through the other side. As the refrigerant evaporates in the heat exchanger, it cools the glycol to a precise, preset dialed in temperature just above freezing point.

8. What if the temperature set point is changed by one of the cooks, will the unit freeze up?
  • Kairak’s new BLU controls are factory preset. The microprocessor program can only be adjusted by accessing the control board and altering the dipswitches. The control board is mounted in a plastic box located inside the main electrical enclosure. This ensures that no unwanted changes are made to the temperature settings. The new LED display is mounted to the front of the unit with no buttons.

US Patent: 5,181,395 Condenser Assembly; 5,927,092 Food Pan Refrigeration Unit; 5,355,687 Pan Cooler and Method