Automated Freezer Defrost

Malisko Engineering, Inc. was chosen to design a system to control the hot gas defrost cycle on an industrial spiral freezer for a national baked goods facility.

Our Design Approach:

Feezer
  • The plant project team required a system that would integrate seamlessly into the existing Freezer Control System.
  • Our Engineers specified additional I/O hardware and developed electrical schematics to wire the defrost valves.
  • The original freezer PLC program was modified to include the new deforst I/O along with the new "hot gas" defrost sequencer.
  • Hot Gas Defrost HMI screens were added to the existing operator interface, including advanced password-protected maintenance screens.

Startup:

  • Malisko Engineering coordinated the electrical installation and checkout through a very tight window during weekend production.
  • The freezer was returned to service within 1 shift, and production resumed.