GEA VARIVENT 24/7 PMO, Руководство по эксплуатации

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4.
Fit the housing into place and attach it.
5. Prior to welding, the housing must always be kept closed.
6. Flush the housing with forming gas from the inside to push the oxygen out of
the system.
7. Weld the housing into the pipe system; use welding filler if necessary. When
technically possible, use the WIG-orbital welding process with pulse
configuration, according to guidelines EHEDG documentation. 35.
8. Passivate the seam after welding.
9.
Fit the seals
10. Assemble the valve and vent the actuator.
11.
®
The valve disk is lowered.
®
Install the valve with welded ends.
Hint!
Welding method: We recommend using the automatic orbital welding
method. All welding work should only be performed by certified
welders or machine operators (orbital welders).
Housing-O-rings: When assembling the valve always replace the
housing O-rings to ensure that the valve is tight.
6.6 Pneumatic connections
6.6.1 Air requirement
Size Actuator type
Air requirement (dm
3
n
/
stroke) (dm
3
n
at 1.01325
bar at 0° C acc. to DIN 1343
for total stroke*
Air requirement (dm
3
n
/
stroke) (dm
3
n
at 1.01325
bar at 0° C acc to DIN 1343
for venting
Strike of the valve disk
(lower disk)
Air requirement (dm
3
n
/
stroke) (dm
3
n
at 1.01325
bar at 0° C acc. to DIN 1343
for venting
Stroke of the valve disk
(upper disk)
1.5'' BD/BLM35 0.66 0.36 0.13
2'' BD/BLM48 0.71 0.36 0.13
2.5'', 3'', 4'' CF5/CLMR56 1.31 0.65 0.19
6'' EH6Z/ELMN6 4.45 2.25 0.30
* 1 dm
3
n /stroke = 1 ln /stroke ≈ 61 inch
3
/stroke
6.6.2 Establishing hose connections
To ensure reliable operation, the compressed air hoses must be cut exactly at a
right angle.
Tools required:
•
A hose cutter
Carry out the following steps:
1.
Shut off the compressed air supply.
Assembly and installation
Pneumatic connections
430BAL009261EN_2
34 17.04.2023