Electrical Installation - Burkert 2821 Notice D'utilisation

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To protect against malfunctions, install a strainer upstream
of the valve.
WARNING!
Danger due to the media!
Connections will leak if the seal is not seated precisely.
• Ensure that the supplied seals are correctly seated in the
valve.
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Insert seal into the valve.
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Do not disassemble the valve!
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Do not move the central adjusting screw!
Screwing in the pipes
16 GB

ELECTRICAL INSTALLATION

DANGER!
Danger from electric voltage when working on the
system!
• Before starting any work, always switch off the voltage and
ensure that it cannot be re-started!
• Observe the applicable accident prevention and safety
regulations for electrical devices!
Observe voltage and type of current in accordance
with the rating plate.
Connecting the Device Socket
Type 2508 or 2507
max. 1 Nm
Seal
18
GB
Mesh size:
0.02 to 0.4 mm
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Use the correct tools for screw-
ing in the pipes!
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Hold the device securely by the
fl uid housing.
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Do not use the coil as a lever
arm.
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Insert the seal. Ensure that
the seal is properly seated!
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Put the device socket on.
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Fasten the device socket
with the screw, max. tighten-
ing torque 1 Nm.
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Connect the grounding con-
ductor.
Attaching to the Mounting Plate
Tightening torque:
0.8 Nm for SG 20
1.0 Nm for SG 32
SG Coil size
(edge length on the coil)
CAUTION!
Damage to the electronics!
The electronics can be damaged if a grounding conductor
is not present between the coil and the device socket.
• Always connect the grounding conductor!
• Check the electrical continuity between the coil and the
device socket.
Alternative connections
Information on selecting the correct control electronics and
adjusting the proportional valve is available in the operating
instructions and data sheets for control electronics Types
1094 and 8605.
CAUTION!
Incorrect PWM frequency!
• A fundamental error in selecting the PWM frequency can
lead to reduced control quality, increased noise generation,
and for Type 2822 to irreversible damage to the valve!
GB 17
19
GB