Alfa Laval Unique TO, Инструкция по эксплуатации

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5 Maintenance
Study the instructions carefully.
The items refer to the parts list and service kits section.
Handle scrap correctly.
Always use genuine Alfa Laval spare parts. Replace seals if necessary.
5.6 Dismantling of acutator
Step 1
1. Dismantle the valve in accordance with instructions in section 5.2 Dismantling of valve . 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.
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 plug (86) with o-rings (85 & 87) from intermediate piece (37).
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 (11) if present. Remove guide ring (18) and o-ring (19).
2. Remove spring assembly (10).
Step 5
NOTE!
Not on actuator 3.
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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