ABB UNS0874A HIER471062P1 Relay input module

Maintenance and cleaning The device does not require maintenance. Opening the device voids the warranty. The inside of the unit can only be cleaned by the manufacturer. Do not immerse or spray the device. Avoid that liquid enters the device. To clean the device exterior: 1. Decommission the device (see chapter 2.3.4 "Decommissioning"). 2. Casing: Clean with isopropanol or similar cleaning solution. Caution: Highly Flammable! Risk injury by explosion and fire. Observe the safety notes given on the cleaning liquid package. Wait at least 30 minutes after cleaning before putting the device back into operation. 3. Protective grill on fan: Clean with a dry brush.

Disassemble 

Only professional staff who are qualified in electrical engineering are allowed to disassemble parts of the drive system. 1. Decommission the device (see chapter 2.3.4 "Decommissioning"). 2. Check temperature. CAUTION: During operation, the heat sink of the drive may reach temperatures above 80 °C (176 °F). Risk of minor burns. Before touching the device, check the temperature and wait until it has cooled below 40 °C (104 °F). 3. Remove the connectors. Disconnect the potential earth connection last. 4. Demount: loosen the fastening screws. Remove the device.

System Repair

 Only professional staff who are qualified in electrical engineering are allowed to exchange parts of the drive system. CAUTION: Automatic Start! During replacement work a combination of hazards and multiple episodes may occur. Work on the electrical installation may only be performed by trained and qualified personnel, in compliance with the regulations for safety at work, and only with use of prescribed personal safety equipment.

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