Burkert 2103 Instructions De Service page 42

→
Without pressurisation tighten the housing screws to the per-
mitted tightening torque (see following table "Tightening torques
for diaphragms").
Control air connection
SFA, SFB, SFI
Fig. 21: Control air connection
replacement for control functions B and i
→
Clamp the valve housing in a holding device.
(applies only to valves not yet installed).
→
Loosen the four housing screws.
→
Remove the actuator from the housing.
→
Unbutton or unscrew old diaphragm. If attachment is with a
bayonet catch, remove the diaphragm by rotating it through 90°.
→
Install new diaphragm.
→
Align diaphragm.
the marker flap of the diaphragm must be perpendicular to
the direction of flow!
→
Place actuator back on the housing.
→
Lightly cross-tighten the housing screws without pressurisation
until the diaphragm is between the housing and actuator.
do not tighten screws yet.
→
Pressurise control air connection
pressed air (5 bar) (see diagram "Control air connection").
All manuals and user guides at all-guides.com
Type 2103
Repairs
1
1 of the actuator with com-
→
Actuate the diaphragm valve twice.
→
Tighten the housing screws to the permitted tightening torque
(see following table "Tightening torques for diaphragms").
english
35