GEA XKR, Operating Instructions Manual, Page: 14 / 30

12 2014-10 · Flow Diversion Device with Proximity switch
Commissioning
• Clean the valve assembly prior to the first production
run.
Functional test
• Actuate each valve of the Flow Diversion Device once
by applying compressed air.
• Prior to the first product run clean the pipe system.
Leak test
• Visually check that all seals are free from leaks.
• Replace defective seals.
Malfunction, Cause,
Remedy
CAUTION
In the event of malfunctions immediately deactivate the
Flow Diversion Device and secure it against inadvertent
reactivation. Defects may only be rectified by qualified
personnel observing the safety instructions.
The following applies to each valve in the Flow
Diversion Device.
Malfunction Cause Remedy
Valve does Error in the Check the plant
not work control system configuration
No compressed Check the
air air supply
Air pressure Check the air
too low hoses for free
passage and
leaks
Error in the Check actuation
electric system /external controller
and routing
of electric lines
Solenoid valve Replace the
defective solenoid valve
Valve does Dirt/foreign Clean the valve
not close materials between housing and
valve seat and
the valve seat
valve disk
Valve closes O-rings dry Grease the O-rings
too slowly in the actuator
and in the control
module
(friction losses)
Leakage at the O-rings in the Dismantle the
valve housing housing valve housing,
defective replace the O-rings
Leakage in the Sealing ring Replace the sealing
lantern defective ring
Maintenance
Inspections
Between the maintenance periods, the each valve of the
Flow diversion devices must be checked for leakage and
proper function.
Product contact seals
• Check at regular intervals:
– stem seal between the upper housing and the lantern
– O-rings between the valve housings
– V-ring in the valve disks
Pneumatic connection
• Check the operating pressure at the pressure reducing
and filter station.
• Clean the air filter in the filter station at regular inter-
vals.
• Check whether the air hose sits firmly in the air con-
nector.
• Check the air hoses for bends and leaks.
• Check function of the solenoid valves.
Electrical connection
• Check whether the cap nut on the cable gland is tight.
• Check the cable connections at the adapter module.
• Check function of the solenoid valves.