Burkert 2301 - Page 35

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Maintenance, cleaning
→ Greasethevalveseatthreadusingasuitablelubricant(e.g.
KlüberpasteUH196-402fromKlüber).
→ Manuallyscrewattachedvalveseatintothevalvebody
thread.
→ Tightenvalveseatusingtorquewrench.Observetightening
torque(see“Tab.13”).
Tightening torques valve seat assembly
Valve seat size Tightening torque [Nm]
Coated valve seat
4–15 20±3
20 28±3
25 40±5
32 65±5
40 85±8
50 120±8
65 150+10
80 180+10
100 220+10
Tab.13: Tighteningtorquesvalveseatassembly
Install actuator (with control unit) on the valve body
→ Replacethesealifnecessary.
WARNING!
Risk due to incorrect lubricants.
Unsuitablelubricantmaycontaminatethemedium.Thereisa
riskofexplosioninoxygenapplications.
▶ Forspecicapplications,e.g.oxygenoranalysisapplica-
tions,useapprovedlubricantsonly.
→ Beforere-installation,greasenipplethreadoftheactuator
(e.g.usingKlüberpasteUH196-402fromKlüber).
NOTE!
Damage to the valve seat seal or seat contour.
▶ Wheninstallingtheactuator,thevalvemustbeintheopen
position.
→ For control function A
Without control unit:pressurisepilotairport1withcom-
pressedair(5bar).Valveopens.
With control unit:Openthevalveinaccordancewiththe
operatinginstructionsofthecontrolunit.
→ Screwactuatorintothevalvebody.Observetighteningtorque
(see“Tab.1:Actuatorsizes”).
Type2301
English