We have a walk-in cooler and a full door freezer which we store ingredients for use in our confection kitchen. The cooler stores eggs, butter and cream. The freezer stores WIP's such as a raspberry reduction. We have been using a circular chart recorders which are reviewed for temperature compliance on a weekly basis. Maintenance has had issues maintaining the chart recorders functionality (sometimes they are not recording and we have to fill out corrective actions forms) so we installed digital temperature recorders. Can we get rid of the circular recording charts? We are using a glycol and air temperature on both. They will be sent out for calibration once a year. What, if any, additional monitoring should be performed other than weekly data review?
Additional thoughts: For crisis management sake, if there was a power outage, the digital recorders rely on a battery and thus would continue to record data. There is an alert in the system if the battery is running low and needs to be replaced.