Most API applications contribute to solvents accumulating in the forepump. Your laboratory exhaust system must be able to accommodate the periodic purging of these solvents. The frequency of the purging depends on the throughput of the system.
CAUTION
- Your lab must have two fume exhaust systems at minimum. The MS analyzer optics can become contaminated if the MS drain/waste tubing and the forepump exhaust tubing connect to the same exhaust system.
- The dedicated exhaust system must be actively vented and maintain an exhaust pressure from atmospheric pressure minus 15 mbar to 1.15 bar absolute (0.15 bar relative).
- Do not run the forepump exhaust tubing vertically near the forepump. Solvents and oils can condense in the line and flow back into the pump, causing pump damage and diminished pump capability. To maintain forepump integrity, route the exhaust tubing from the exhaust port down to the floor, not from the forepump vertically toward the ceiling.
CAUTION
Trip hazard
During the installation, route the tubing so it is not a trip hazard.
The following figure shows the forepump exhaust tubing that is connected to a dedicated lab exhaust system.
| No. | Description | No. | Description |
|---|---|---|---|
1 | Dedicated lab exhaust system | 2 | Forepump exhaust tubing connection |
Required Materials
Item | Quantity |
|---|---|
Exhaust tubing | 1 |
90-degree elbow (with hose nozzle) | 1 |
Centering ring | 1 |
Clamp ring | 1 |
Procedure
- Using a centering ring, clamp ring, and 90-degree elbow (with hose nozzle), connect one end of the exhaust tubing to the exhaust port located on the rear of the forepump.
- Run the exhaust tubing at floor level for at least 2 m (6.5 ft) until it reaches the dedicated lab exhaust system.
- Connect the opposite end of the exhaust tubing to a dedicated lab exhaust system.