ABB TZIDC - Functional Check for Emergency Shutdown Module

Maintenance
42/18-84-EN TZIDC, TZIDC-110, TZIDC-120 39
8.1 Functional check for emergency shutdown module
IMPORTANT (NOTE)
When using the emergency shutdown module, a functional check must be performed at least
every two years.
Procedure:
Fig. 21: Slide switch for emergency shutdown module
1. Open the housing cover.
2. Move the slide switch (1) from center position "On" to the upper and lower switch positions
("Off1" or "Off2"), and check whether the actuator is depressurized.
3. Reset the slide switch to the center position ("On") after the functional check.
4. Replace the housing cover.