Samson EB 20b, Монтаж и эксплуатация

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5-2
EB 20b_EN
February 2022 edition
Subject to technical changes
Installation
Danger and damage due to use of an electrical actuator!
Ö
Make sure that the actuator in the end positions is turned off
by the limit switch signal.
Ö
If shut-off takes place in an intermediate position due to the
signal of the torque switch, use this signal in addition for an
error message. The fault must be remedied as soon as possi-
ble, see Chapter “8 Faults”.
Ö
For further instructions, see the electrical actuator manual.
Danger and damage due to high external loads on an actuator
unit!
Actuators and gears are not “stepladders”.
Ö
Do not apply loads to the actuator units from the outside. This
can damage or destroy the ball valve.
Danger and damage due to heavy actuator units!
Actuators and gears that are heavier than the weight of the ball
valve can pose a danger to the user and cause damage to the
pipe system.
Ö
Support these actuators and gears if they generate a bending
stress on the ball valve due to their size and/or installation
situation.
Damage to the ball valve due to the incorrect setting of the end
stops!
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.
5.4 Installing the ball valve in the pipe
5.4.1 General
Ö
Transport the ball valve in its original packaging to the instal-
lation site and unpack it only there.
Ö
Inspect the ball valve and actuator for transport damage. Do
not install damaged ball valves or actuators.
Ö
A functional test is to be carried out at the beginning of in-
stallation for manually-operated ball valves: the ball valve
must close and open correctly. Detected malfunctions must be
fi xed before commissioning, see Chapter “8 Faults”.
Ö
Handle the ball valve with care and observe the instructions
for the
fl ange connection.
Ö
Only install ball valves whose pressure classes, connection
type (
fl ow rate), type of lining and connection dimensions
match the conditions of use, see the corresponding marking
on the ball valve.
Ö
The counter fl anges must have smooth sealing surfaces. Other
shapes must be agreed upon with PFEIFFER.
WARNING
NOTE
Ö
The ball valve can be used in both directions if a direction ar-
row is not applied.
Danger due to exceeding the limits of use!
Exceeding the limits of use can pose a danger to the user and
cause damage to the pipe system.
Ö
No ball valve may be installed whose permissible pressure/
temperature range is not suf
fi cient for the max. permissible
operating conditions.
Ö
The limits of use are marked on the ball valve, see Chapter “2
Markings on the device”.
Ö
The permissible range is de fi ned in Chapter “1 Safety instruc-
tions and safety measures”.
Ö
The connection ends of the pipe must align with the ball valve
connections and have plane-parallel ends. Connection
fl ang-
es that are not plane parallel can damage the PFA lining dur-
ing installation.
Ö
The connection data for the actuator unit match the data of
the control, see the type plate(s) on the actuator unit.
Ö
Prior to installation, clean the ball valve and the connected
pipe of any contamination, in particular solid foreign matter.
Ö
The sealing surfaces on the fl ange connection and any uti-
lized fl ange seals are free of all contamination during instal-
lation.
Ö
Optionally, an arrow is marked on the body. The direction of
the arrow must correspond to the direction of
fl ow in the
pipe.
Ö
When pushing the ball valve and any used fl ange seals into
an already assembled pipe, the distance between the pipe
ends is measured such that all contact surfaces of the ball
valve and seals remain undamaged.
Ö
The fl ange connections are tightened evenly and in a criss-
cross pattern in at least three steps.
All fl ange connections are tightened using a torque wrench and
ensures that the required tightening torques are reached, but not
exceeded see Table 15-2 or Table 15-3 in Chapter “15.1.1 Tight-
ening torques”.
Ö
The PFA plastic sealing surfaces tend to fl ow, observe the yel-
low notice sign on the ball valve, see Chapter “1.4 Warning
notes on the device”. After installation in the pipe, retighten
the body screws according to the respective tightening tor-
ques, see Table 15-1 in Chapter “15.1.1 Tightening torques”.
Ö
Vents are screwed into the exhaust air connections of pneu-
matic and electropneumatic devices to ensure that the gener-
ated exhaust air can be released to the outside (protection
against overpressure in the device).
Furthermore, vents allow the intake of air (protection against
underpressure in the device).
DANGER
Info