Start-Up; Set Middle Position On 3-Position Actuator - Burkert 2100 Guide Rapide

Type 2100
7

START-UP

WARNING!
Risk of injury from high pressure or hot medium.
Excessively high pressure or temperatures may damage the
device and cause leaks.
▶ Observe values for pressure and medium temperature indic-
ated on the type label.
In the case of devices with control unit, observe start-up in
the operating instructions for the corresponding control
unit.
7.1 Set middle position on 3-position
actuator
Open position [100 % stroke]
Pilot air port 1: 5...7 bar
Pilot air port 2: 0 bar
Middle position [0...100 % stroke]
Pilot air port 1: 5...7 bar
Pilot air port 2: 5...7 bar
Start-up
H Exhaust
Transparent
cap
Lock nut
Nut
0 % stroke
100 % stroke
Middle position
Fig. 7: Setting middle position
Unscrewing transparent cap: Actuator sizes ø50, ø70 and ø90:
Width across flats 28.
Pressurise pilot air port 1 of the actuator with compressed air
(5 bar).
Loosening lock nut: Actuator size ø50: Width across flats 13;
actuator size ø70 and ø90: Width across flats 17.
Adjust the middle position with the nut.
Retightening lock nut: Actuator size ø50 max. 20+5 Nm; actu-
ator size ø70 max. 30+5 Nm; actuator size ø90 max. 45+5 Nm.
Screw transparent cap back on.
To limit the middle position to 50 % of the total stroke, set dimen-
sion H on the nuts.
english
Kv-
Position of the nut
Kv+
19