2. Remove the 2 screw plugs.
3. Remove the 2 magnetic bars from their housings.
4. Place a container with sufficient capacity underneath the low-loss
header vent valve.
5. Open the vent valve.
6. Allow the flow to continue until no more dirt is present.
7. Close the vent valve.
8. Refit the 2 magnetic bars in their housings.
9. Refit the screw plugs.
Fig.189
MW
-4
0
0
0
3
1
0
-1
2
3
Fig.190
MW
-4
0
0
0
3
1
1
-1
5
4
Fig.191
MW
-4
0
0
0
3
1
2
-1
7
9
8
11 Maintenance
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