Maintenance
Prior to dismantling the Valve
36
Operating Instructions · VARIVENT
®
Mixproof Valve L with Lifting Actuator, suitable for pigging operation
Edition 26/08/2016
Maintenance Intervals
To ensure the highest operational reliability of the valves, all wearing parts should be
replaced at longer intervals.
The actual maintenance intervals can only be determined by the user since they depend
on the operating conditions, for instance:
•
dairy period of use,
•
switching frequent,
•
type and temperature of the product,
•
type and temperature of the cleaning solution,
•
ambient conditions.
Prior to dismantling the Valve
Requirement
Make sure that during maintenance and repair work no process is in operation in the
area concerned.
Carry out the following steps:
1.
Drain all pipe system elements that lead to the valve and, if necessary, clean or rinse
them.
2.
Shut off the control air supply.
3.
Disconnect the power supply.
4.
Take the valve, with all housings and housing connections if possible, out of the pipe
section.
Done
Maintenance Intervals
Application
Maintenance Intervals
(Guideline values)
Media at temperatures of
60 °C to 130 °C
140 °F to 266 °F
approx. very 3 Monoliths
Media at temperatures of
< 60 °C (< 140 °F)
approx. very 12 Monoliths
