Maintenance and re-activation after the cooler has been deactivated for a long time:
1. Discharge the media in the cooler after deactivation.
2. Remove the cooler from the system, clean and blow dry the parts.
3. Apply the anti-rust oil to the exposed processing surface, and insert and drain the oil and the nozzle with a plastic cover.
4. When it is activated, remove the rust preventive oil and conduct a leak test.
5. Re-use as required by the instructions for use.