The document is about the operating instructions of type 8690 pneumatic control unit, mainly introduces the use of the product, installation method, etc.
This manual provides detailed operating instructions for the Bürkert Type 8690 pneumatic control unit, designed for mounting on process valves. It includes safety guidelines, installation procedures, technical specifications, and maintenance instructions. The unit supports both 21xx and 20xx series valves and features options for electrical position feedback. Safety precautions are emphasized, including handling high pressure and electrical hazards. The manual also covers compliance with ATEX and cULus standards for use in hazardous areas.
| Operating Conditions | Ambient temperature -10 to +50°C |
|---|---|
| Control Medium | Neutral gases, air |
| Air Output | 250 I N /min |
| Pressure Range | 3 to 7 bar |
| Stroke Range (Micro Switch) | 7–28 mm |
| ATEX Approval | Zone 1, 2, 21 and 22 |
The ambient temperature range is -10 to +50°C.
The permitted ambient temperature must not exceed the maximum value specified on the type label.
The pressure range for the control medium is 3 to 7 bar.
The air output of the pilot valve is 250 I N /min.