Standard_Parts_Catalogue

Page 1603 | 3.5 Controlling, Venting, Sealing of Liquids and Gases 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 GN 556 Breather caps continued 0 20 100 30 40 50 60 80 70 90 300 200 400 100 500 600 800 700 110 120 130 140 50 Δ  p [ mbar ] Q [ l/min ] Air flow rate [l/min.] is a factor of the pressure difference [l/min.] between container and ambient air. Assembly instruction Screw in lower part using an Allen® wrench. Insert filter. Place upper part on top. The knobs on the upper part and the appropriate recesses in the lower part serve to assem- ble the unit in the proper and accurate position. Ventilation / breather position: Turn upper part clockwise (CLOSE arrow) up to the first latch position. Marker 1 is lo- cated above the reference pointer. The latching mecha- nisms prevents the upper part from inadvertently working loose. Close position: Continue to turn the upper part clockwise (CLOSE arrow) until marker 0 is located above the reference pointer. The latching mechanism prevents the upper part from working loose also in this position. To return to the ventilation / breathing position or for chan- ging the filter of for dismant- ling, turn the upper part anti- clockwise as shown by the OPEN arrow.