Section 2 System Preparation
2-5
The Solvent Level Sensing air line connects to the back panel
with a compression fitting. This fitting must be airtight. To
connect tubing using the compression fittings:
1. Slide the nut and ferrule onto the tubing as shown in
Figure 2-1 or 2-2.
2. Fully insert the tubing into the threaded bulkhead fitting
on the back panel of the system.
3. Finger-tighten the nut onto the threaded bulkhead fitting.
This will seat the ferrule in the fitting.
Note
When using higher-density solvents such as dichloromethane
(DCM), place the solvent container level with or above the
CombiFlash Rf system. Placing solvent containers below the level
of the Rf can contribute to decreased flow due to the high vapor
pressure of DCM. This problem becomes more pronounced as the
ambient temperature increases.
2.5 Connect Waste Lines
WARNING
Risk of fire or equipment damage. Failure to connect Waste
Port tubing may allow organic solvents to pool in unsafe areas,
possibly creating dangerous levels of flammable vapors.
WARNING
Risk of fire ignited by electrostatic discharges. Never
substitute the black tubing on CombiFlash systems. The black
PTFE tubing (P/N 023-0503-06) is conductive. This tubing is
required to dissipate static electricity.
CAUTION
Elevated flammable vapor levels are possible. Ensure that the
waste container is adequately ventilated, preferably by placing it in
a fume hood.
The system has two waste outlets on the back panel: Diverter
Valve waste and Inject Valve waste. You can route waste to a
common collection container, or to individual containers.