Installation, Operating, and Maintenance Instructions
Series 01, DN 16 - 50 (5/8" - 2")
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel +41 81 771 61 61 Fax +41 81 771 48 30 [email protected] www.vatvalve.com
271691EB
2009-03-09
10/15
Even with disconnected supply, loaded springs and/or air cushions in cylinders can be potential hazards.
Keep fingers and objects away from the valve opening!
Products returned to VAT must be free of harmful substances such as e.g. toxical, caustic or microbiological ones. If
products are radioactively contaminated, fill in the VAT form «Contamination and Radiation Report» and send it with the
product. The form is available at VAT. The maximum values indicated in the form must not be exceeded.
5.1 Replacement of actuator/gate assembly
The figures in brackets refer to the drawing on page 13
1. Vent vacuum chambers on either side of valve
2. Open valve
3. Disconnect compressed air
4. Disconnect electrical power
5. Disconnect compressed air line and plug (4) from solenoid and plug (2) from position indicator
6. Remove screws (15) from bonnet
7. Withdraw actuator/gate assembly carefully from body and put it on a clean place
8. Check and clean sealing surfaces of bonnet and valve seat
9. Put new bonnet seal «VATSEAL» (7) on body or bonnet (depending on mounting position)
Attention:
Bordering of 2 bore holes must be on the body side!
10. Insert actuator/gate assembly carefully. At first, insert two screws (15) at both centering holes (bordering) of the bonnet
seal « VATSEAL» (7) and tighten them slightly only. Afterwards, tighten all screws (15) uniformly in crosswise order
(diagonal), in 2 or 3 steps, by means of the supplied hexagon pin spanner.
Notice!
A suitable torque wrench with the appropriate hexagonal insert to tighten the screws
(tightening torque: 10 Nm) is available from VAT (item 10, 11, 12)
11. Connect plug (2) to position indicator
12. Connect plug (4) to solenoid
13. Connect compressed air
14. Perform function and leak test
15. Valve is ready for operation
