bürkert 3363 Schnellstartanleitung Seite 63

Type 3363, 3364, 3365
Maintenance, troubleshooting
14.2.2 Remove the diaphragm
NOTE!
Damage to the diaphragm
▶ To avoid damage, the device must be in MANUAL operating
state during installation and removal of the diaphragm.
▶ The actuator must be in the position "valve open".
Before disassembly:
→
Setting MANUAL operating state. See chapter "9.12".
→
Open valve.
→
Switch off the supply voltage.
Disassembly of the diaphragm:
→
Loosen the 4 nuts on the diaphragm socket cross-wise.
Fig. 44: Removal of the diaphragm using the 2-way body as an example
Actuator
Diaphragm socket
Nuts (4 units)
Diaphragm
Valve body
Body screws (4 units)
→
Remove the body screws.
→
Remove valve body.
→
Unbutton or unscrew the diaphragm (see "Tab. 26: Fixture
types for diaphragms").
If the diaphragm has a bayonet catch: → Detach the dia-
phragm by turning it 90° and remove it.
→
Install the new diaphragm. For a description see chapter "7.4
Install diaphragm and actuator" on page 22.
14.2.3 After replacing the diaphragm
NOTE!
Damage to the diaphragm
▶ To avoid damage, only adjust the position control after
replacing the diaphragm. Only then should the operating
state be set to AUTOMATIC.
→
Execute "Position control adjustment". See chapter "9.4" on
page 42 and chapter "9.5" on page 44
→
Set AUTOMATIC operating state. See Chapter "9.12" on page
51.
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