Installing The Control Head Type 8691 On Process Valves Belonging To Series 20Xx - Burkert 8691 Manuel D'utilisation

Type 8691
Installation
7.3 installing the control head Type 8691 on process
valves belonging to series 20xx
Procedure:
1. install switch spindle
Figure 11: Installation of the switch spindle (1), series 20xx
→
Unscrew the transparent cap on the actuator.
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Using a hexagon socket key, unscrew the orange/yellow position indicator from the inside of the actuator.
Figure 12: Installation of the switch spindle
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Press the O-ring downwards into the cover of the actuator.
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Manually screw the switch spindle (and the plugged-on guide element) together with the plastic part onto the
spindle of the actuator, but do not tighten spindle yet.
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Tighten the guide element with a face wrench
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Tighten the switch spindle on the spindle of the actuator. To do this, there is a slot on the upper side (torque:
1.0 Nm).
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Push the puck onto the switch spindle until it engages.
journal Ø: 3 mm; journal gap: 23.5 mm
2)
Transparent cap
Position indicator
Actuator
(2), series 20xx
into the actuator cover (torque: 8.0 Nm).
2)
Puck
Switch spindle
Guide element
O-ring
Plastic part
(of the switch spindle)
Spindle (actuator)
english
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