Installation; Safety Instructions; Installing The Control Head Type 8691 On Process Valves Belonging To Series 21Xx - Burkert 8691 Manuel D'utilisation

7.

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7.1. safety instructions
Danger!
risk of injury from high pressure!
• Before dismounting pneumatic lines and valves, turn off the pressure and vent the lines.
risk of electric shock!
• Before reaching into the device or the equipment, switch off the power supply and secure to prevent reactivation!
• Observe applicable accident prevention and safety regulations for electrical equipment!
Warning!
risk of injury from improper installation!
• Installation may be carried out by authorized technicians only and with the appropriate tools!
risk of injury from unintentional activation of the system and an uncontrolled restart!
• Secure system from unintentional activation.
• Following assembly, ensure a controlled restart.
7.2. installing the control head Type 8691 on process
valves belonging to series 21xx
Procedure:
1. install switch spindle
Figure 4: Installation of the switch spindle (1), 21xx series
→
Unscrew the transparent cap on the actuator and unscrew the position display (yellow cap) on the spindle
extension (if present).
→
For version with plug-in hose connector, remove the collets (white nozzles) from both pilot air ports (if
present).
16
(plug-in hose connectors with collets or
threaded bushings)
english
Transparent cap
Pilot air ports
Actuator
Type 8691
Installation