rada 425-t3 Product Manual page 30

Maintenance Procedure - Inlet Filters
Blockage of the inlet filters can lead to poor flow performance and reduced
temperature control. It is essential that the inlet filters are cleaned or, if necessary,
renewed as part of the six-monthly maintenance operations.
Caution! Do not operate the Rada 425-t3 c without filters. Product damage may
occur.
A filter pack is available containing two strainer screens and all the seals which
may be needed during filter inspection.
1. Turn the isolation screw on the isolator assemblies through 90
10) to isolate the water supplies to the valve. Open an outlet fitting to release
pressure and to assist the draining of residual water.
2. Unscrew and remove the blanking cap.
3. The inlet filters are a push-fit into the blanking cap.
4. The inlet filters may be cleaned under a jet of water, or renewed.
5. Re-assembly into the inlet elbows is a reversal of the above procedures.
6. Restore the water supplies and check for leaks.
7. Operate the valve at full hot and full cold. The maximum temperature may require
resetting (refer to COMMISSIONING).
Isolator
Assembly
Inlet Elbow
Inlet Filter
Blanking Cap
Inlet Filters
Figure 10
30
o (refer to Figure
Isolation Screw