Issue/Rev. 0.4 (6/17) ║ MN03010 • Page 17
Model 210 Valve (I / O / S) Manual
Service and Maintenance
Inspect the upper diaphragm washer for any defects. If none are present, install the
diaphragm washer. If there are visible defects (i.e. sharp edges, warpage, etc.), the
diaphragm washer should be replaced. Use caution when installing the washer and
ensure not to gall the threads.
Figure 21
– Upper Diaphragm Washer
Using a fine file, dress the surfaces of the back-up plate to remove any burrs.
Figure 22
– Back-up Plate
Using a brass bristle brush, dress the inner diameter of the back-up plate to remove
any burrs.
Figure 23
– Back-up Plate
