Burkert 2000 - Product Description; Structure and Function

11
Replacing the seal set
Type 2000, 2002, 2012
CAUTION!
Danger through taut springs!
▶ Carefully open piston actuator!
→ Unscrew cover
31
withspecialwrenchholdinguptheactuatorbody
12
againstthehexagon.
Informationonthespecialwrenchcanbefoundinchapter“10Installationtools”.
→ OnlyforactuatorsizeGandH: Remove washer
40
.
→ OnlyforcontrolfunctionA:Removepressuresprings
28 29
.
→ Remove position indicator
26
with Allen key.
→ Carefully screw in actuator on the swivel plate
3
(only put pressure on the upper section of the swivel
plate).
→ Release nuts
25
.
→ Remove pistons
22
withsupportingwasher
24
.
→ OnlyforcontrolfunctionA:Removellerpiece
19
with intermediate washer
20
andO-ring
21
.
→ OnlyforcontrolfunctionB: Remove intermediate washer
20
,O-ring
21
andpressurespring
35
.
→ OnlyforcontrolfunctionI:Removellerpiece
19
with intermediate washer
20
andO-ring
21
.
→ Remove spindle
2
from actuator body
12
and clean spindle thread.
→ Clampactuatoronthenipplehexagon
6
.
For actuator size D (50 mm) the tube
8
isscrewedandsealedinthenipple
6
.
→ Release and remove screw
18
with socket spanner.
→ Removedisksprings
17
.
→ Remove actuator body
12
.
→ OnlyactuatorsizeC:ReplaceO-ring
11
.
Reinforcing ring
10
remains on the tube
8
.
→ Slidepackingglandset
7
,
13
,
15
,
16
carefully out of the tube
8
.Takecarethatthetubeisnot
damaged.
→ Cleanallreplacementpartsthoroughlyafterremoval.
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