Burkert Type 2702 - Manual (Page 30)

30 - 2702
M
aintenance and
S
ervicing of the valve
english
plug
Mount the valve body with a new sealing ring bet-
ween the valve body and the piston
actuator.
Turn the lower switch back into the idle position.
The piston actuator is bled and the spring closes the
valve.
note This procedure causes air to be trapped under the spring-loaded piston.
Normally the air will escape slowly.
After 10 hours, however, this procedure should be completed.
mounting.the.actuator