5 Maintenance
Service the valve regularly.
Study the instructions carefully and pay special attention to the warnings!
Always use Alfa Laval genuine spare parts. Always keep spare rubber seals, lip seals and diaphagms in stock.
Check the valve for smooth operation after servicing.
INCORRECT assembling and disassembling of Aseptic Mixproof Valve change-over valve
A. Upper clamp still mounted, which is wrong
B. Lower clamp dismounted
C. The plug is overstreching the diaphragm as it moves 10 mm further
downwards.
Lower clamp dismounted
2321-0100
A
B
C
Step 17
Mount lower valve body, but remember to align with upper valve
body, before tightening the lower clamp. Then tighten LOWER
clamp with torque M = 10-12 Nm.
IMPORTANT:
Remember always to fit the LOWER clamp first and the upper
clamp as the last one to avoid damaging the diaphragm (also
see Step 16).
2321-0146
!
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