Manual De Operacion

Páginas: 15 (3615 palabras) Publicado: 16 de septiembre de 2011
The Modern Art of Engineering

D E L T A SD4 Double Seal V alve Operating Manual

R.O.I. Designed into Every Solution

UK Table of Contents : 1. 2. 3. 4. 5. 6. 6.1 7. 8. 9. 10. 11. 12. 13. 14. General Terms Safety Instructions Mode of Operation Auxiliary Equipment Cleaning Installation Welding Instructions Dimensions / Weights Technical Data Maintenance Service Instructions TroubleShooting Assembly Tool for Seat Seal
( for valves produced from Nov. 2000 only )

Page : 2 2 3 4 5 6 6 7 8-9 10 11 - 13 14 15 16

Modification of Actuator Spare Parts Lists Double Seal Valves SD4, SDE4 DN design inch design Actuator Leakage valve RN RN RN RN 01.054.62 01.054.62-1 01.054.86 01.054.67

Double Seal Valve DELTA SD4 Operating Manual Rev.2

1

UK 1. General Terms

This operatingmanual has to be read carefully and observed by the competent operating and maintenance personnel. We have to point out that we will not accept any liability for damage or malfunctions resulting from the non-compliance with this operating manual. Descriptions and data given herein are subject to technical changes.

2.

Safety Instructions
DANGER!
- The technical safety symbol draws yourattention to important directions for operating safety. You will find it wherever the activities described are bearing risks of personal injury. - Electric and pneumatic connections must be separated. - Before any maintenance of the valve, the line system must be depressurized. - Do not reach into the open valve. - Risk of injury by suddenly operating valve. In dismantled state there is the risk ofbruising at movable parts of the valve. - Observe service instructions to ensure safe maintenance of the valve. - Attention! With valve design NC (normally closed): Before releasing the housing screws, the valve insert must be relieved by controlling the actuator. - The welded actuator is under spring load, do not open it by force.

Double Seal Valve DELTA SD4 Operating Manual Rev.2

2

UK3.
control unit DELTA CU31N

Mode of Operation
Double seal valves DELTA SD4 have been developed for the use in the brewing and beverage industries, in dairy and food applications as well as for the chemical and pharmaceutical industries. The field of application of the DELTA SD4 comprises the safe shut-off of line sections which are separated from one another by two seat seals. A leakagechamber is arranged between the seals, the leakage chamber being forcible closed by the two leakage valves or opened to the atmosphere. Leakage at the seat seals is discharged via the leakage valves to the atmosphere and indicated. - Operation by pneumatic actuator with air connection. The actuator is generally mounted normally closed (NC). - The inner parts of the actuator are maitenance-free. - Toavoid pressure hammers, the valve is to be closed against the flow direction of the fluid. - As standard design a control unit DELTA CU31N with NOT element is installed on top of the actuator for the pneumatic control of the valve. The NOT element fulfills the task to increase the closing forces of the closed valve.

G 1/8

- The yellow luminous diodes in the control unit indicate the position ofthe valve shaft. - Observe service instructions to ensure safe maintenance of the valve.

3

Double Seal Valve DELTA SD4 Operating Manual Rev.2

UK 4.
PSH

Auxiliary Equipment
Valve position indication A proximity switch holder (PSH) for the valve position indication can be installed at the actuator. Attention: If the valve is equipped with a valve position indicator or a control unitwithout NOT element, the max. closing pressure reduces (s. page 9, max. product pressures).

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Proximity switches to signal the limit position of the valve disc can be mounted to the proximity switch holder (PSH) if required. We recommend to use our APV standard types: operating distance: 5 mm / diameter: 11 mm. If the operator decides to use valve position indicators other than APV type,...
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