GEA VARIVENT 24/7 PMO, Руководство по эксплуатации

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Test procedure 2
With test procedure 2, the controller checks the interlock of the superordinate
control system (PLC), via the manually forced opening of a seat, while a CIP
circuit is active in the opposite housing. In this case, the CIP pump or the
pressure of the CIP feeder should deactivated.
Notice
When carrying out test procedure 2, proceed with great caution!
There is the risk of the CIP liquid mixing with product if the control system
interlocks are not activated effectively.
► Make sure that there is no product in the housing opposite the CIP circuit
during the test duration.
Step 1
Requirement:
•
Make sure that the valve being tested is part of an active CIP circuit
programme and determine which housing (upper or lower) of the valve is
supplied with CIP liquid.
Step 2
Carry out the following steps:
1.
If the upper housing is part of the active CIP circuit:
®
Activate the lifting process of the lower seat by controlling the solenoid valve
Y2 on the PLC.
2.
If the lower housing is part of the active CIP circuit:
®
Activate the lifting process of the upper seat by controlling the solenoid valve
Y3 on the PLC.
Step 3
3.
If the superordinate control system (SPS) is locked properly, the CIP pump or
the pressure of the CIP feeder is deactivated.
®
If the CIP pump or the pressure of the CIP feeder is not deactivated, the
system should be switched off immediately and the interlock of the
superordinate control (SPS) investigated.
®
Done
6.8.2 Hardware description
There are three solenoid valves located on the valve in the control top T.VIS A-15
or T.VIS M-15.
1. Y1 - Main control of the valve
2.
Y2 - Activation of the ventilation of the lower seat
3. Y3 - Activation of the ventilation of the upper seat
Assembly and installation
Test procedure according to PMO for valve type M/ 2.0
430BAL009261EN_2
46 17.04.2023