Samson EB 20a, Монтаж и эксплуатация

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3-8
EB 20a_EN
May 2022 edition
Subject to technical changes
Design and principle of operation
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Fasten the body halves together with screws (4), washers
(28), spring washers (6) and nuts (5) so they are hand-tight.
The arrangement of the spring washers can be found on the
drawing, see Figure 3-3.
− Depending on the nominal size, stud bolts with nuts or screws
can be used.
− The fi nal screw connection of the body halves is performed dur-
ing a subsequent assembly step.
Ö
Place the V-ring packing (7) in the PTFE bushing (15). The
number of packing rings can be found on the drawing, see
Figure 3-1.
Ö
Push the bushing (17) carefully over the packing (7) and the
PTFE bushing (15).
When this packing unit is preassembled, the bottom ring of the
packing (7) protrudes past the bushing (17).
Ö
Push the preassembled packing unit with a slight rotation
movement over the ball stem in the packing space of the
body.
Ö
Place the spring washer(s) (16) on the bushing (17). The lo-
cation and quantity of the spring washer(s) can be found on
the drawing, see Figure 3-3.
Ö
Place the centring ring (14) on the spring washer(s).
Ö
Insert the set of spring washers (9) in the centring ring until
reaching the bottom ring of the V-ring packing. The arrange-
ment and quantity of the spring washers can be found on the
drawing, see Figure 3-3.
Ö
Insert the bearing bushing (10) into the stuf fi ng box fl ange
(11).
Ö
Place the pre-assembled stuf fi ng box fl ange on the body and
adjust with screws (12).
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Tighten the screws evenly in a criss-cross pattern until a gap
between 1 - 2 mm has formed between the stuf
fi ng box
fl ange and the body.
The fi nal screw connection of the stuf fi ng box is performed dur-
ing a subsequent assembly step
Ö
Tighten the screws (4) on the body halves (1a and 1b).
For the tightening sequence and tightening torques of the respec-
tive nominal sizes, see Figure 15.1 and Table 15.1 in Chapter
“15.1.1. Tightening torques.
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After approx. 24 hours, retighten the screws (4) on the body
halves.
For the tightening sequence and tightening torques of the respec-
tive nominal sizes, see Figure 15.1 and Table 15.1 in Chapter
“15.1.1. Tightening torques.
Ö
To complete the assembly, tighten the screws (12) on the stuff-
ing box (11).
Make sure to tighten the screws fi rmly.
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