3.
The closed position of the upper seat is detected by proximity switch S3 that
is installed externally on the lantern. The correct setting of this proximity
switch for detecting the closed position of the upper seat is described in detail
in the operating instructions of the M/2.0 valve and in Section 7.6, Page 73.
The sensitivity of the position measuring system is 0.1 mm.
7.7.4
Test Procedure 1
Step 1
The valve should be in the closed position. This position can be identified by the
green LED on the top of the control top.
Step 2
Carry out the following steps:
1.
Activate the lower valve disk by activating solenoid valve Y2 via the PLC.
®
When the seat moves downwards (approx. 6 mm), the green LED on the
top of the control top will turn off and changes to a yellow flashing light
(LEFF deactivate) or a green/yellow flashing light (LEFF activated) to
indicate that the position detection device is detecting that the lower valve
disk has left the closed position.
®
If the green LED does not go out, the position detection device is NOT set
correctly and the setting must be repeated, refer to the operating
instructions of the M/2.0 valve and Section 7.3, Page 68.
®
Done
Step 3
Carry out the following steps:
1.
Activate the upper valve disk by activating solenoid valve Y3 via the PLC.
®
When the seat moves upwards (approx. 2 mm), the yellow LED on the
external proximity switch in the lantern will turn off to indicate that
proximity switch S3 is detecting that the upper valve disk has left the
closed position. In addition, a quickly flashing yellow (LEFF deactivated) or
green/yellow flashing light (LEFF activated) is visible on the top of the
control top.
®
If the yellow LED of the initiator mounted externally in the lantern does not
turn off, the position detection device is NOT set correctly and the
adjustment procedure must be repeated as described, see Section 7.6,
Page 73.
®
Done
7.7.5
Test Procedure 2
Test procedure 2 is carried out by the Regulatory Inspector to verify that the
system interlock programmed in the PLC is working correctly by manually
actuating the valve disk that shuts off the pipe of the valve which currently is not
part of the cleaning circuit. If interlocking is implemented correctly, the CIP supply
Start-up
Test procedure for Tuchenhagen PMO valves type M / 2.0
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Summary of Contents for T.VIS A-15
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