Burkert Type 2012 - Manual (Page 14)

14
Replacingthesealset
Type 2000, 2002, 2012
→
Assemble packing gland set
7
,
13
,
14
,
15
,
16
in the tube
8
in the right sequence (see detailed
drawing).
Chevron seal
Pressure rings
Chevron seal
16 Pressure spring
7
Figure 2: Packing gland set
→
Push packing gland into the tube
8
as far as the stop; clamp nipples
6
to do this and screw in packing
gland set with screw
18
. Remove screw
18
again.
→
Mount actuator body
12
, disk springs
17
and screw
18
on the tube
8
.
→
Screw
18
with socket spanner; ensuring that the disk springs
17
are in a central position.
→
Lubricate spindle
2
lightly with silicone grease OKS 1110-3 and insert suitable assembly sleeve over
spindle thread.
For information about the assembly sleeve see chapter “8. Installation tools”.
→
Insert spindle through nipple
6
into actuator and remove assembly sleeve.
→
for control function a: Place filler piece
19
on spindle.
→ for control function B: Insert pressure springs
35
.
→
for control function i: Insert filler piece
19
.
→
Place intermediate washer
20
and lightly lubricated O-ring
21
on spindle.
the following operations must only be carried out with all valves:
→
Lubricate mounting actuator body
12
lubricant Amblygon TA.
→
Remove old piston seal
23
from pistons
22
clean groove and lubricate well; lubricant Amblygon TA.
→
Insert new piston ring
23
.
→
Insert pistons
22
and supporting washer
24
and lightly lubricate bearing surface.
→
Wet spindle thread
2
with special adhesive LOCTITE 274 and screw on nut
25
.
english