1
Line Power, Vacuum System, Gases, and Ethernet Communication
Connecting the Forepump to the LCQ Fleet or LXQ MS Detector
4
LTQ Series Getting Connected Guide
Thermo Scientific
Connecting the Forepump to the Laboratory Exhaust System
The proper operation of your forepump requires an efficient fume exhaust system. Most
atmospheric pressure ionization (API) applications contribute to the accumulation of solvents
in the forepump. While Thermo Fisher Scientific recommends that you periodically open the
ballast valves (on the top of the pumps) to purge the accumulated solvents, opening the valves
might allow a large volume of volatile solvent waste to enter the fume exhaust system. Choose
an exhaust system that can accommodate the periodic purging of these solvents. The
frequency of the purging depends on the throughput of your system.
Y
To connect the exhaust port of the forepump to the laboratory exhaust system
1. Use hose clamps (P/N 00108-09001) to secure the 2.5-cm (1-in.) ID blue exhaust hose to
the forepump exhaust port.
2. Vent the free end of the blue exhaust hose to an external exhaust system in your
laboratory.
The exhaust hose should travel at floor level for a minimum of two meters (78.5 in.)
before it reaches the external exhaust system. This tubing acts as a trap for exhaust fumes
that would otherwise recondense in the forepump oil.
shows the blue exhaust hose connected to the optional oil mist filter, which is
connected to the exhaust port of the forepump.
Figure 2.
Connection between the vacuum port and the forepump
EDWARDS
30
Oil Mist Filter EMF 20
EDWARDS
MS detector
(rear panel)
Edwards forepump
Vacuum port
Blue hose
(connect to external
exhaust system)
Optional oil mist
filter
