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Is the calibration of your instrumentation NIST traceable?

Yes. Each instrument is calibrated annually and the documentation kept on file. 

How long is my calibration valid?

The industry standard is one year.

How often should I clean my filter or condenser?

Manufacturers recommend that filters and condensers be cleaned at a minimum of every 3-6 months.

What should I do if I get a hi / low temperature alarm?

Battery Alarm may sound similar to hi/low temperature alarm, check the battery first, and ensure the unit is plugged into AC power. You should also confirm that the temperature in the cabinet matches the set point temperature.

I’m concerned about maintaining specimens temperature while my unit is in alarm. What should i do?

If you have space available we recommend transferring your specimens to another unit if you suspect your unit is failing or not consistently holding temperature.  If you do not have space available to transfer your specimens within the department we have loaner units we can provide on site to assist while your faulty unit is diagnosed. 

What is the benefit of having a Preventive Maintenance Inspection performed on my unit?

The purpose of a preventive maintenance inspection is to maintain your equipment efficiency and reliability by discovering any problems prior to a unit failure.

My unit is maintaining its temperature but is making a loud/unusual sound. Should I call for service?

Yes. Although the unit is still maintaining its set point the loud or unusual noise should be investigated before the unit fails. Please contact our office to set up a service call.

What is the purpose of my alarm battery?

If your unit were to lose power, the alarm battery will keep the display turned on and will show the temperature inside the unit. It will also go into alarm as usual if the unit were to warm up past its high alarm set point. It does not turn the compressors on or any other component other than the display board.

Where do I find the make, model, and serial info on my freezer?

There are 3 common locations where you can find this information: On the backside of the unit at the top or bottom, on the left side of the unit at the bottom, or inside the unit at the top right or left.

What Sets Centigrade Service Apart?


24-Hour Emergency Service


Preventive Maintenance & Calibration Services

Technical Support

8560 Freeland Street Houston, TX 77075