17
Installation
Type 3281
7
INSTALLATION
DANGER
Risk of injury due to high pressure in the system or device.
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Before working on the system or device, switch off the pressure and deaerate lines.
Risk of injury from electric shock.
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Before working on the system or device, switch off the power supply and secure to prevent reactivation.
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Observe any applicable accident prevention regulations and safety regulations for electrical devices.
WARNING
Risk of injury due to improper installation.
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Installation may only be performed by trained technical personnel with suitable tools.
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Secure the system against unintentional activation.
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Following installation, ensure a controlled restart.
7.1
Installing the device fluidically
Installation position:
arbitrary, preferably actuator at the top and with vertical installation position actuator
cover upwards
.
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Clean pipelines and flange connections.
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Install a dirt trap upstream of the valve inlet (≤ 0.3 mm).
NOTE
Caution: risk of breakage.
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Do not use the plastic actuator cover as a lever arm.
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Hold the device on the housing using an appropriate tool (e.g. open-end wrench) and screw into the pipeline.
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Note the flow direction.
The digits on the valve body indicate the direction of flow (flow direction always under valve seat 2
→
1).
7.2
Mounting the valve seat
Valve seat set consists of valve seat and graphite seal.
WARNING
Risk of injury from improper installation.
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Only mount the valve seat with a special installation tool.
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Observe the tightening torque.
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