5 Maintenance
Study the instructions carefully.
The items refer to the parts list and service kits section.
Handle scrap correctly.
Always use Alfa Laval genuine spare parts. Replace seals if necessary.
5.5 Valve assembly
Step 1
1. Fit o-ring (47) (do not twist), lip seal (49) and o-ring (46) in upper
sealing element (48) (Lubricate with Klüber Paralique GT 703).
NOTE: The o-ring should be gently pressed into the groove
2. Fit upper sealing element in intermediate piece (37).
3. Place o-rings (67) and mount flushing tubes (66). Be sure to
align nozzles (68 + 69) towards recess.
TD449-144_2
Lubricate with Klüber Paralique GT 703
Step 2
1. Place lip seal (57) in upper plug (or spray nozzle if the valve has
SpiralClean) and the o-ring (38) in the lower plug.
2. Press lower plug (75) rapidly into upper plug (55) through the
lip seal.
Note: Do not damage the lips when lower plug (75) with o-ring
(38) passes the lip seal.
TD 449-076_1
1
2
Step 3
Place coupling system and upper plug according to illustrations ( 1
to 4 ).
1. Push lock (44) up over piston rod (29).
2. If external CIP to leakage chamber: Place o-rings (39).
3. Place spindle liner (42) on piston rod. Fit upper plug (55).
4. Mount clamps (43) on spindle liner (42).
5. Fit lock (44).
6. Fit o-ring (40). Fit flushing tube (41) (or plug (15) if no CIP).
4
3
2
1
TD 449-331
31
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