Burkert Type 8709 - Handbuch (Seite 7)

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fluid installation 8.4.
Danger!
Risk of injury from high pressure in the equipment!
Before loosening the lines and valves, turn off the •
pressure and vent the lines.
Select the available fluid connections suitable for the
maximum flow-rate. Inlet paths are not required.
If required, the devices can also be supplied with fitted fluid
connections.
Warning!
Danger from leaks!
If flow-rates are low and pressures high, ensure that the
system is sealed to prevent incorrect metering or the
operating fluid from leaking.
To ensure that the seal is secure, observe the mode of •
operation described below.
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To seal the system properly, install the clamping ring screw
joints as follows:
Fit pipe connections tension-free (if required, use
→
compensators).
Use pipe with suitable diameter and smooth surface.
→
Saw the pipe straight and deburr.
→
First push the union, then the support ring (if available)
→
and finally the clamping ring in the stated sequence
onto the pipe.
Insert the pipe all the way into the screw joint.
→
Tighten union by hand.
→
Counter with a wrench on the screw-in side (do not
→
put pressure on the device housing) and tighten 1 ¼
revolutions.
note!
During prolonged operating pauses, drain the fluid out of
the LFC / LFM and flush with compressed air.
To do this, the device must be actuated so that the valve
is open.
Ensure that the calibration pressure of the device is •
not exceeded.
Too high a pressure within the LFC / LFM will cause
irreparable damage to the device.
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electrical installation 8.5.
Danger!
Risk of injury due to electrical shock!
Before removing covers, • switch off the power supply and
secure to prevent reactivation!
Observe applicable accident prevention and safety
•
regulations for electrical equipment!
Warning!
Risk of fire and ignition due to electrostatic
discharge!
If the device is electrostatically charged, highly flammable
fluid vapors may ignite if a discharge occurs.
To prevent an electrostatic charge, connect the hous- •
ing to the function earth (FE) via the shortest possible
cable length (cross-section as large as possible).
Danger from electromagnetic fields!
If the FE connection is not connected, the conditions of
the EMC Law are not being satisfied!
Connect the housing to the function earth (FE) via the •
shortest possible cable length (cross-section as large as
possible).
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note!
Important information for the problem-free func-
tioning of the device:
The GND or earth cables for all signals of the LFC / LFM
must always be fed separately to the LFC / LFM.
If all GND signals are bridged directly on the LFC / LFM
and only one common cable is fed to the control, signal
displacements and interference of the analogue signals
may occur.
Connect the function earth (FE) to the indicated screw,
→
e.g. with the aid of a ring tongue.
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Type 8708, 8709, 8718, 8719