MAINTENANCE NOTICE
NM-230 index 18
Page 16/55 September 2020
5 MAINTENANCE OF THE VALVE FOR POSITIONER BURKERT 8693
Before starting the disassembly procedure, if the valve is fitted with a signalling box it may be
necessary to detach the signalling unit from the actuator.
5.1
DISASSEMBLING THE 8693 UNIT
Dismantling without disconnection
IMPORTANT: Before starting any work on the box, it is important to ensure
that the air supply is closed and that the circuit is purged.
Dismantling with disconnection
IMPORTANT: Before starting any work on the box, it is important to ensure
that the mains supply is switched off, that the air supply is closed and that the
circuit is purged.
• Unscrew the locking screws to separate the base of the housing taking care not to damage the
seals of the base and the control pin.
• Remove the control pin of the linking rod.
• Unscrew the 2 screws H (ref: 7006729) to disassemble the base.
• Unscrew the linking rod.
CAUTION !
Control pin
Linking rod
Base seal
H screw for fixing base Positioner
8693 (ref: 7006729)
Positioner 8693
Base seal / positioner
Base
Fixing screw of linking rod
positioner 8693
Adaptation
kit