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.
Step 7
Mount bonnet on spindle and fit diaphragm.
Press only with the fingers to avoid scrates on diaphragm.
Be sure that diaphragm is correctly fitted on the “round edge”
on the bonnet.
NOTE!
Make sure that the diaphragm is
securely mounted on the bonnet
before installing the complete
diaphragm/stem into the valve
body.
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Step 8
Mount the fitting for leakage in the bonnet. Be sure the actuator
stem is in lower position. Mount the assembled "plug unit" onto
the actuator stem.
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