Georg Fischer Piping Systems 165 Bedienungsanleitung Seite 9

Electrical connection
Note the voltage and type of current indicated on the rating plate. Voltage
tolerance ±10 %. Connection via Bürkert cable connector, degree of pro-
tection IP65, cable cross-section 3 x 0.75 mm². Flat tag connector = earth
connection. Connector: rotatable through 4 x 90°. Tightening torque for
connector 1Nm.
Malfunctions
Check the connections, voltage and operating pressure. If the solenoid
coil does not respond, check connection and voltage. If the valve does
not close, clean the throttle in the top of the valve body (valve inlet) or the
pilot bores (valve inlet/outlet).
Spare parts
See chart for spare part sets. Remove pilot valve: Loosen the 2 (non-
secured) screws.
Method of operation A: Pilot valve D
Method of operation B: Pilot valve C
Replace seal elements of valve body:
Loosen 4 screws
DN DN
15/20 25/32
M5 x 30 M8 x 30
DN
40/50
M12 x 40