Samson EB 01b, Монтаж и эксплуатация

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5-2
EB 01b_EN
February 2022 edition
Subject to technical changes
Installation
Danger and damage due to high external loads on an actuator
unit!
Actuators are not “stepladders”.
Ö
Loads may not be applied to the actuators as they can dam-
age or destroy the valve.
Danger and damage due to heavy actuator units!
Actuators that are heavier than the weight of the valve can pose
a danger to the user and cause damage to the pipe system.
Ö
These actuators must be supported if they generate a bend-
ing stress on the valve due to their size and/or installation sit-
uation.
Damage to the valve due to incorrect travel adjustment!
If a SAMSON actuator is retro fi tted, a preadjustment of the travel
is necessary:
Ö
For details about travel adjustment, see Chapter “5.3.1 Travel
adjustment with separately supplied SAMSON actuator”.
The actuating device is adjusted to the operating data speci fi ed
in the order:
Ö
The adjustment of the “OPEN” and “CLOSED” end stops is
the responsibility of the user.
5.3.1 Travel adjustment with separately sup-
plied SAMSON actuator
With a separately supplied valve and SAMSON actuator, the di-
mension “H” from the upper edge of the coupling nut to the up-
per edge of the yoke must be adjusted according to the table and
is checked during assembly.
Figure | 5-1: Travel adjustment
WARNING
NOTE
Table | 5-1: Travel adjustment when installing SAMSON actuators
(valve closed)
SAMSON actu-
ator
H
Nominal
FAIL
CLOSE
H
Nominal
FAIL
CLOSE
H
Nominal
FAIL
OPEN
175v2 75 78 78
240 75 78 78
350 75 78 85
700 90 95 104
750v2 90 93 98
1400 165 169 185
Table | 5-2: Preferred combinations of the valve BR 01b with
SAMSON actuators type 3277 and 3271
Nominal
size
DN 15 25 40 50 80 100 150
NPS ½ 1 1½ 2 3 4 6
SAMSON
actuator
175v2 cm 2 • • •
240 cm 2 • • •
350 cm 2 • • •
700 cm
2
• • •
750v2 cm 2 • • • •
1400 cm 2 • •
5.3.2 Travel limit
5.3.2.1 Travel limit for the “actuator stem ex-
tends- fail-close” principle of operation
The mechanical travel limit for fail-close action is adjusted in the fac-
tory using the retainer ring (22) that is
fi t inside on the stem (12).
Figure | 5-2: Assembly situation, travel limit for “fail-close”