Burkert 2030 Manuel D'utilisation page 32

Type 2030, 2031, 2031 K, 2032,
2033, 2037
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Align diaphragm.
Observe mark tab for direction of flow!
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Place actuator back on the housing.
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Lightly cross-tighten the housing screws until the diaphragm is between the housing and actuator.
do not tighten the screws yet.
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Actuate the diaphragm valve twice to position the diaphragm correctly.
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Without applying pressure, tighten the housing screws to the permitted tightening torque (see
torques for diaphragms).
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Pressurize lower control air connection with compressed air (value as indicated on the rating plate).
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Check the tightening torque of the screws again.
replacement of the diaphragm for control functions B and i
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Clamp the valve housing in a holding device.
(applies only to valves not yet installed).
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Loosen the fastening screws crosswise and remove actuator together with diaphragm from the housing.
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Unbutton or unscrew old diaphragm. If attachment is with a bayonet catch, remove the diaphragm by rotating
it through 90° (see Table 8:Fastening types for diaphragms).
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Install new diaphragm in actuator (see
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Align diaphragm.
Observe mark tab for direction of flow!
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Place actuator back on the housing.
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Lightly cross-tighten the housing screws without pressurization until the diaphragm is between the housing
and actuator.
do not tighten the screws yet.
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Pressurize upper control air connection with compressed air (value as indicated on the rating plate) (see
Figure 15: Control air connection).
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Actuate the diaphragm valve twice.
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Tighten the housing screws to the permitted tightening torque (see
diaphragms).
Control air connection
Figure 18:
Repairs
Table 8:Fastening types for diaphragms).
Table 7: Tightening torques for
Upper control air connection
(for CFB and CFI)
Lower control air connection
(for CFA and CFI)
Table 7: Tightening
english
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