5 Maintenance
Study the instructions carefully.
The items refer to the parts list and service kits section.
Handle scrap correctly.
Always use genuine Alfa Laval spare parts. Replace seals if necessary.
Step 2
2A:
If air fitting AC1 is present, supply compressed air and follow
procedure 2A.
1. Supply compressed air for AC1.
2. Loosen tank plug (93) while counterholding upper stem
(1).
3. Remove the tank plug.
4. Release compressed air.
5. Replace o-ring (38).
A = On
B = Off
If balanced seat lift is available
A
B
TD 449-296_1
2B:
If no air fitting AC1 is present, follow procedure 2B.
1. Push sealing element (48) free of intermediate piece (37).
2. Loosen tank plug while counterholding upper stem.
3. Remove the tank plug (93).
4. Replace o-ring (38).
If no balanced seat lift is available
NOTE!
For replacement of seal ring (74), please see 5.3 Tank plug,
replacement of radial seal
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