Metrohm 772 Pump Unit - Manual (Page 9)

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1 Introduction
772 Pump Unit
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1 Introduction
1.1 Instrument description
The 772 Pump Unit is a versatile peristaltic pump for conveying or evacu-
ating liquid media. It was designed specifically for the production opera-
tion and laboratory environment and enables a wide range of applica-
tions. Unlike membrane pumps, pumping organic solvents or liquids with
solids content is no problem for the 772 Pump Unit.
Therefore, the 772 Pump Unit is equally well suited for use in titration,
e.g. for evacuating titration samples with silver halide precipitation and as
a delivery pump in larger automation systems. By using the respective suit-
able tubing material, a wide variety of tasks can be managed.
The flow rate of up to 600 mL/min opens up a wide range of applications.
1.1.1 Model versions
The 772 Pump Unit is available in the following three versions:
2.772.0110 772 Pump Unit
2.772.0120 772 Pump Unit with aspiration equip-
ment
2.772.0130 772 Pump Unit with rinsing equipment
Each version includes different accessories according to its use (see Chap-
ter 9, page 28).
1.1.2 Connectors
The 772 Pump Unit needs 16 - 24 V DC voltage.
Power is supplied to the pump via the direct connection to a Sample Pro-
cessor (e.g. 814 or 815) or to the 731 Relay Box (connection via adapter
cable 6.2160.010).
1.1.3 Intended use
The 772 Pump Unit is designed for usage in automated systems in analyti-
cal laboratories.
This instrument is suitable for pumping chemicals and flammable samples.
Use of the 772 Pump Unit therefore requires the user to have basic knowl-
edge and experience in handling toxic and caustic substances. Knowledge
with respect to the application of the fire prevention measures prescribed
for laboratories is also mandatory.