Burkert Type 2012 - Manual (Page 18)

18
Replacementparts
Type 2012
10 malfuncTiOns
malfunction reason remedial action
Actuator
does not
switch Pilot air port
interchanged
→
Connect lower (CFA,
CFI) or upper (CFB,
CFI) control air
connection
Pilot pressure too low →
Observe pressure
specifications on the
type label
Medium pressure too
high
Flow direction reversed
→
Observe direction
arrow on the body
Valve is not
sealed Dirt between seal and
valve seat
→
Installing dirt trap
Seat seal worn
→
Installing new seat seal
Flow direction reversed
→
Observe direction
arrow on the type label
Medium pressure too
high →
Observe pressure
specifications on the
type label
Pilot pressure too low
Valve is
leaking on
the release
bore Packing gland worn
→
Renew packing gland
or replace actuator
Tab. 3: Malfunctions
11 replacemenT parTs
Caution!
risk of injury and/or damage by the use of incorrect parts!
Incorrect accessories and unsuitable replacement parts may cause
injuries and damage the device and the surrounding area.
▶ Use only original accessories and original replacement parts from
Bürkert.
11.1 replacement part sets
The following spare part sets are available for the globe control valve
Type 2012:
• Seal set packing gland,
• Valve set (seal material PTFE),
• Valve fittings (seal material PTFE),
• Seal set swivel plate.
11.1.1 seal set packing gland
Contain: packing gland and graphite seal
actuator size nominal diameter Order number
175 65 155 483
175, 225 80 155 484
175, 225 100 155 485
english