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Easier Maintenance for Refrigerators and  -30°C Freezers with Optional Solid Ballast

Posted on Aug 30, 2019 by Colleen Holtkamp

Solid Ballast Blog Post

Keeping up with preventive maintenance is important to ensuring the performance and longevity of any piece of equipment. For medical-grade cold storage, routine maintenance activities are vital to ensuring that the valuable products stored inside are safeguarded from adverse conditions. Fortunately, the tasks required for maintaining medical-grade refrigerators and freezers aren’t overly cumbersome or time-consuming. In addition, an optional feature has been introduced to make this process even more convenient.

Medical-grade refrigerators and -30°C freezers normally use probes inserted into a thermal buffer to monitor the temperature inside the cabinet. (This is important because it helps reduce nuisance alarms that can occur if the probes are placed in air with no buffer.) For medical-grade refrigerators and freezers, this has traditionally meant the use of a probe bottle filled with a glycerin or propylene glycol solution. The temperature of the solution in the probe bottle represents the temperature of the products stored inside the refrigerator or freezer.

Probe bottles that are filled with solution require maintenance. They need to be checked periodically and topped off or refilled if the solution has evaporated. (A probe bottle that is low on solution or that has run dry is a common cause of erratic temperatures appearing on the display, nuisance alarms, and unnecessary service calls.) In addition, the probe bottles should be cleaned or replaced on an as-needed basis.

To help reduce the maintenance necessary for solution-filled probe bottles, an optional solid ballast feature is being offered for refrigerators and -30° freezers from Helmer Scientific. The solid ballast, made of anodized aluminum, has been specifically designed to have the same temperature response as a solution-based thermal buffer. It also eliminates the effort involved in routine maintenance.

To learn more about the solid ballast option, download the product information, which includes features, specifications, and the results of an Equivalency Study showing the performance of the solid ballast compared to liquid solution.

Download Solid Ballast Info and Equivalency Study »

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Colleen Holtkamp

Written by Colleen Holtkamp

Helmer designs, manufactures, and markets specialized medical and laboratory equipment to customers in more than 125 countries. With an extensive background in Helmer products, Colleen’s focus is on the Clinical Laboratory and Blood Bank segments.

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