Maintenance and inspection
Before opening the doors or the covers for maintenance and inspection, be sure to turn off the
power and wait for at least 25 minutes. After completing inspections, close the door or cover
tightly, check that the specified explosionproof performance is ensured, and then turn on the
power. The parts to be checked are described in “6. Maintenance”.
If any of the following damage occurs, contact a Yokogawa sales representative or the Yokogawa
sales division.
• The screws securing the Protection System (explosionproof construction) are damaged
• The exterior of the enclosures is damaged
• Packings are cracked or deformed