Connecting the oil-free roughing pumpB-15
panel. Secure the hose ends by installing 2 clamps supplied in the
startup kit on each hose end.
5. Attach the DN25 elbow to the DN25 nipple on the pump exhaust outlet
and secure the connection with a clamp.
6. Install the external silencer, with the arrow pointing toward the pump,
to the open port of the DN25 elbow, and then secure the connection with
a clamp.
7. Attach the DN25 reducing nipple to the outlet of the external silencer
and secure the connection with a clamp.
8. Connect an approximately 300 mm (12 inch) length of 12.7-mm clear
PVC exhaust tubing to the DN25 reducing nipple, securing the tubing
with a hose clamp.
9. Connect an elbow to the other end of the PVC exhaust tubing, and
connect the elbow to one of the fittings on the exhaust trap bottle
(included in the startup kit).
Caution:
• To prevent condensation from forming in the exhaust tubing
between the roughing pump and the exhaust trap bottle, you
must minimize the length of the tube.
• To avoid gas leaks, use the sharp knife to cut the PVC exhaust
tubing squarely (that is, perpendicular to its horizontal axis).
Caution: To prevent condensation from draining backward and
damaging the pump, the exhaust tubing must be installed with
an exhaust trap bottle; the bottle must be positioned at or below
the roughing pump exhaust port.
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