Chapter 2: Prerequisites
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Vacuum Pump Requirements
The inlet fitting on the vacuum pump must be suitable for 0.50 ID hose.
IMPORTANT NOTE: When selecting the vacuum pump it is very important
to consider the flammability of the solvent that will be used. If the solvents
are flammable, an explosion-proof vacuum pump or one suitable for the
solvents to be processed is recommended. See Chapter 3 Solvent Safety
Precautions for solvents suitable for use in the CentriVap Cold Trap.
To ensure that aggressive vapors do not damage the vacuum pump, it is
recommended that all internal wetted parts of the vacuum pump are PTFE
or PTFE coated when using aggressive solutions.
Chemical Traps
The CentriVap Cold Trap will not provide complete vacuum pump protection
under all circumstances. Variables that influence the Cold Traps trapping ability
are volatility of the solvents, solvent volumes, solvent temperatures, and vacuum
levels. Some scenarios may require a Chemical Trap for additional vacuum pump
protection. This in-line cannister is placed after the Cold Trap and before the
vacuum pump and holds inserts for specific sample types. Acid, solvent, moisture
and radioisotope inserts are available. Refer to Chapter 5: Accessories for Your
CentriVap for ordering information.
NOTE: Several components within the CentriVap Cold Trap are made from
stainless steel or other materials and can be degraded if exposed to acids.
Contact Labconco before evaporating acids.
Space Requirements
Refer to Appendix B: Cold Trap Dimensions for dimensional drawings of the
CentriVap Cold Traps.
No person or any hazardous material should be within 12 inches of the CentriVap
Cold Trap while it is operating.
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