Alfa Laval Unique Mixproof 3-body, Инструкция по эксплуатации

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5 Maintenance
The valve is designed so that internal leakages do not result in the products becoming mixed.
Internal leakage in the valve is externally visible.
Study the instructions carefully.
Always keep spare rubber seals and guide rings in stock. Check the valve for smooth operation after service.
Step 1
1. Dismantle the valve in accordance with instructions in section 5.1 General maintenance
Pay special attention to the warnings!
2. The actuator is now ready for service. Please see drawing when dismantling according to steps 2 to 6 on this page.
Note! The actuator is maintenance free but repairable.
Step 2
1. Remove nuts (36) and washers (35).
2. Pull out intermediate piece (37) from the actuator.
3. Remove cover disk (25).
4. Remove retaining ring (24).
Step 3
1. Remove piston rod (29), bottom (21) and lower piston (30).
2. Separate the three parts.
3. Remove o-rings (20, 22 and 23) from bottom, o-rings (33 and 31) and guide ring (32) from lower piston as well as o-ring
(28) from piston rod.
4. Remove spring assembly (14).
Step 4
1. Remove inner stem (27), main piston (17) and distance spacer and screw (11/11.1) (only size 51mm/DN50).
Remove guide ring (18) and o-ring (19)
2. Remove spring assembly (10).
Step 5
Note! Not on actuator size 51mm/DN50
1. Unscrew screws (2) (are glued!).
2. Remove stop (4).
3. Remove upper piston (8). Remove o-rings (7 and 9).
Step 6
1. Remove o-ring (5) and guide ring (6).
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