Malfunctions - bürkert 2030 Bedienungsanleitung

Type 2030, 2031, 2032, 2033,

Malfunctions

→ Actuate the diaphragm valve twice to position the diaphragm
correctly.
→
Tighten body screws with pressurization in diagonal pairs in
three stages (approx. 1/3, approx. 2/3, 3/3 of the tightening
torque), according to Table (see "Tab. 7"). The diaphragm should
be positioned and pressed evenly all around the actuator and
body.
Fig. 20: Control air connection
2037
Upper control air con-
nection
(for CFB and CFI)
Lower control air con-
nection
(for CFA and CFI)
11 MALFUNCTIONS
Malfunctions Cause / Remedial action
Actuator Control connection interchanged*
does not
CFA: → Connect lower control connection
switch
CFB: → Connect upper control connection
→ Upper control connection: Close
CFI
Lower control connection: Open
* see "Fig. 20"
Control pressure too low
See pressure specifications on the type label.
Medium pressure too high
See pressure specifications on the type label.
Valve is not Medium pressure too high
sealed See pressure specifications on the type label.
Control pressure too low
See pressure specifications on the type label.
Flow rate PTFE diaphragm bulging
reduced Replace diaphragm.
english
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