B-16 External Connections
10. Connect a length of 12.7-mm clear PVC exhaust tubing to an elbow and
connect the elbow to the other fitting on the exhaust trap bottle. The exit
line of the exhaust trap bottle can be at any elevation.
11. Secure the exhaust trap bottle in a conspicuous location.
12. Route the open end of the exhaust tubing to a suitable exhaust vent.
13. Make the electrical connections to the roughing pump.
Caution: To avoid gas leaks, use the sharp knife to cut the PVC
exhaust tubing squarely (that is, perpendicular to its horizontal
axis).
Exhaust trap bottle
Exhaust port
Elbow
External silencer
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