Changing Pressure Controller; Recommended Auxiliary Materials; Malfunctions - Burkert 8835 Manuel D'utilisation

Maintenance,troubleshooting
9.5

Changing pressure controller

Please note "9.1 Safety instructions" on page 15!
→
Vent pneumatic lines.
→
Loosen double nipple using open-end wrench (AF 15).
→
Changing pressure controller.
→
Screw in double nipple (tightening torque 5 Nm ± 1 Nm).
→
Check the device for function and leaks.
Fig. 11: Changing pressure controller
9.6

Recommended auxiliary materials

To ensure faultless operation, maintenance and repair of the device,
the following auxiliary materials are recommended:
Type of aux- Product
iliary material designation
Sealer and anti- Multi silicone
seize agents grease
OKS 1110
Type 8835
Pressure controller
Double nipple
Manufacturer and
Internet address
OKS Schmierstoffe GmbH
www.oks-germany.com
9.7

Malfunctions

Malfunction Possible cause
Bypass or No control air available
heating circuit
Leak on hose con-
valve does not
nection / hose
switch
Leak on valve actuator
No electrical signal
available
Solenoid valve
defective
Heating circuit valve or
bypass valve defective
Discharge Defective heating
of process circuit or bypass valve
media
Defective
hose connection
Seat leakage
on the bypass
or heating
circuit valve
Tab. 1: Malfunctions
english
Remedial action
Check air supply
Change hose
connection / hose
Change bypass valve
or heating circuit valve
Check the power
supply on the
controller
Change solenoid valve
or pilot valve bar
Change bypass valve
or heating circuit valve
Change bypass valve
or heating circuit valve
Change fitting,
including the seal
Change bypass valve
or heating circuit valve
19