Burkert Type 2000 Manuel d'utilisateur télécharger pdf (Page 10)

Start-Up

The actuator can be rotated infinitely by 360°. See section

“7.2. Rotating the actuator”.

Control air hose: Use size 1/4" or 1/8" control air hoses

(actuator ø 40 mm).

Control

function

Pilot air port

Top

Bottom

Pilot air

port

Top Bottom

Closes Opens

the valve

Aggressive environment: discharge free pilot air ports via a

hose into a neutral atmosphere.

8. START-UP

• Observe the type label specifications and information on

pressure and temperature values in section “6. Technical

data”.

• Observe the information on the Ex area in section “4”!

8.1. 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, section “6” and flow direction (section “8.2” and “8.3”).

8.2. Flow above the seat

Control function A, CFA: closes by spring force 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 above the seat for gaseous media.

english

Type 2000

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Burkert Type 2000 Manuel d'utilisateur Page 10