Alfa Laval Aseptic Mixproof Series, Инструкция по эксплуатации

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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 9
Tighten plug and actuator with:
-
51 mm (2”) to 76.1 mm (3”) with torque = 33 Nm
- 25 mm (1”) with torque = 17 Nm
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Step 10
Before mounting bonnet/diaphragm into valve body use grease
(Paraliq GTE 703) on sealing surface. This will reduce friction when
diaphragm is pressed into the valve body.
Make sure that the actuator stem is in lower position, as this
makes it easiest to fit diaphragm into the valve body.
Mount actuator type “NC” without air pressure.
Mount actuator type “NO” with air pressure.
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Step 11
Ensure that the actuator stem is still in lower position.
Then press hard on top of the actuator to fit the bonnet/diaphragm
in the valve body.
There is a “big” gab opening, but diaphragm is now placed into
the valve body.
NOTE!
There is a “big” gap, but diaphragm is now placed into the valve
body.
* = Big gap
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*
Step 12
Now move the actuator stem in top position and press HARD on
top of the actuator to reduce the gap to approx. 1 mm.
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