Labconco CentriVap Concentrators and Cold Traps 74750 Series - Manual (Page 9)

Chapter 2: Prerequisites
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Vacuum Pump Requirements
A vacuum pump must be provided by the user. A vacuum pump with a free air
flow rate of 82 liters per minute and < 2 mBar ultimate pressure is adequate for
aqueous samples. More volatile samples can be satisfactorily processed using a
diaphragm pump with a free airflow of 42 liters per minute and 200 mBar
vacuum. The inlet fitting on the vacuum pump must be suitable for 0.50 ID hose.
Vacuum pumps used with 115V models should be equipped with a 115V, 15 Amp
NEMA 5-15P plug. Vacuum pumps used with 230V models should be equipped
with a “reverse” IEC 320 plug. This will allow the vacuum pump to be plugged
into the receptacle on the back of the CentriVap.
IMPORTANT NOTE: To ensure that aggressive samples used in the
CentriVap do not damage the vacuum pump, it is recommended that all
internal wetted parts are Teflon®* or Teflon coated.
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.
Vacuum Line Traps
When using a mechanical pump that is not corrosion resistant, the CentriVap Cold
Trap or equivalent trap must be used in the vacuum line to prevent damage from
solvent vapors. When evaporating acids, it is advisable to include a soda lime
acid secondary trap in the vacuum line. This adds additional protection for the
pump.
NOTE: Several components within the CentriVap are made from stainless
steel or aluminum and can be degraded if exposed to acids. Contact
Labconco before evaporating acids.
A moisture trap, solvent trap and radioisotope trap are also available. Refer to
Chapter 6: Accessories for Your CentriVap for ordering information.
Space Requirements
Refer to Appendix C: CentriVap Specifications for dimensional drawings of the
CentriVap.
No person or any hazardous material should be within 12 inches of the CentriVap
Concentrator while it is operating.
*Teflon® is a registered trademark of DuPont