APV
APV_UF3 ATEX_UK-0_122018.indd
10
Relief Valve
DELTA UF3-ATEX
Instruction Manual UK-0
12. Service Instructions
Corresponding spare parts list:
RN ATEX 01.054.53
12.1. Dismantling from the line system
-
Before start of maintenance and assembly the operator must make
sure that an explosive atmohsphere does not exist (detection/
measurement of potential concentration of hazardous substances).
Alternatively, use spark-resistant tools!
1. Shut off line pressure in the product line and drain lines if possible.
2. Remove pneumatic air lines (seat lift actuator).
3. Release clamp screw at the feedback support and extract proximity
switches. (If valve is not equipped with feedback, omit 12.1.3).
4. Remove flange screws (10).
5. Screw two flange screws into the threaded bores of the valve yoke,
slightly lifting the complete valve insert.
6. Remove the flange screws and carefully lift the valve insert vertically
out of the valve housing.
UK
16
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