Omron E5CC User Manual page 13

Installation Precautions
Waterproofing
The degree of protection is as shown below. Sections without any specification on their degree of
protection or those with IP@0 are not waterproof.
Front panel: IP66
Rear case: IP20, Terminal section: IP00
When waterproofing is required, insert the Waterproof Packing on the backside of the front panel.
Keep the Port Cover on the front-panel Setup Tool port of the E5EC/E5AC securely closed. The
degree of protection when the Waterproof Packing is used is IP66. To maintain an IP66 degree of
protection, the Waterproof Packing and the Port Cover for the front-panel Setup Tool port must be
periodically replaced because they may deteriorate, shrink, or harden depending on the operating
environment. The replacement period will vary with the operating environment. Check the required
period in the actual application. Use 3 years or sooner as a guideline. If the Waterproof Packing and
Port Cover are not periodically replaced, waterproof performance may not be maintained. If a
waterproof structure is not required, then the Waterproof Packing does not need to be installed.
E5@C Digital Temperature Controllers User's Manual (H174) 11