5/12/2017
TECH-538/D.W.O. 23160
Page 124 of 189
Manifold Onboard Filter Replacement (old standard flow manifold)
The positioner’s onboard filter should be replaced regularly or whenever it gets clogged
Figure 9-6 – Diagram for the positioner’s onboard filter replacement
Note:
The following instructions are for the old Standard Flow Manifold, as seen in the picture above.
For the High Flow Manifold please contact Westlock for support.
Important:
The positioner’s onboard filter is not a substitute for normal instrument air preparation.
Supply air to the positioner should conform to ISO 8573-1 “Air Quality Standards”.
Important:
The filter’s original color is chalky white. If the filter is discolored, its replacement should be
performed more often. A discolored filter may also indicate the need for an evaluation of the air-supply
quality. A filter/regulator with a 5 micron or better element, just prior to the positioner, is therefore
recommended.
Important: Some damages caused by improper usage or maintenance may void the warranty
provided by Westlock and its representatives. In case of doubt, consult about the correct procedure
to follow.
