Start-Up; Disassembly - Burkert 2006 Mode D'emploi

7

START-UP

Observe the type label specifications and information on
pressure and temperature values in section "5 Technical
Data".
7.1 Control pressure
WARNING
For control function I: Danger if control pressure fails.
If the pressure fails, no defined position is reached.
▶ For a controlled restart, initially pressurize the equipment with
control pressure and then connect the medium.
→ Set the control pressure according to the type label specifica-
tions and flow direction (section "7.2" and "7.3").
7.2 Incoming flow above upper seat
(direction of flow 3 → 2)
Control function A (CFA) closes by spring force the lower seat of
the valve with the medium flow. The medium pressure supports
the closure and seal of the valve seat. The valve is opened by the
control pressure.
WARNING
Risk of injury due to water hammer.
A closing shock can cause lines and the equipment to burst.
▶ Only use valves with the flow direction above the seat for
gaseous media.
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english
Type 2006
Assembly
To ensure complete opening of the upper valve seat, the
minimum control pressure must be used.
7.3 Flow direction below the lower seat
(direction of flow 1 → 2)
Control function A (CFA) closes by spring force against the medium
flow. Control function B (CFB) closes with the control pressure against
the medium flow. The medium pressure supports the opening of
the valve.
WARNING
Seat leaks caused by the minimum control pressure being
too low (on CFB and CFI) or the medium pressure being too
high.
▶ Observe the minimum control pressure and medium pressure
(see "5.4.2 Pressure ranges").
8

DISASSEMBLY

DANGER
Risk of injury from discharge of medium and pressure.
It is dangerous to remove a device which is under pressure
due to the sudden release of pressure or discharge of medium.
▶ Before removing a device, switch off the pressure and vent
the lines.
→ Loosen pneumatic connection.
→ Remove device.