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Summary of Contents for Metrohm 772
- Page 1 772 Pump Unit Manual 8.772.8001EN / 2019-11-29...
- Page 3 Metrohm AG CH-9100 Herisau Switzerland Phone +41 71 353 85 85 Fax +41 71 353 89 01 info@metrohm.com www.metrohm.com 772 Pump Unit Manual 8.772.8001EN / 2019-11-29...
- Page 4 Technical Communication Metrohm AG CH-9100 Herisau techcom@metrohm.com This documentation is protected by copyright. All rights reserved. This documentation has been prepared with great care. However, errors can never be entirely ruled out. Please send comments regarding possible errors to the address above.
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Page 5: Table Of Contents
4 Operation 5 Operation and maintenance General notes ..............15 5.1.1 Care ..................15 5.1.2 Maintenance by Metrohm Service .......... 15 Pump tubings ..............16 5.2.1 Selecting the pump tubing ............. 16 5.2.2 Suitability test for tubing materials ......... 17 5.2.3... - Page 6 Table of contents 6 Troubleshooting Problems ................21 7 Technical specifications Peristaltic pump ..............22 Power supply ..............22 Interfaces and connectors ..........22 Ambient temperature ............22 Reference conditions ............23 Dimensions/material ............23 8 Accessories Index ￭￭￭￭￭￭￭￭ 772 Pump Unit...
- Page 7 Screwing the union nuts tightly ............10 Figure 7 772 Pump Unit directly on the Sample Processor ......11 Figure 8 772 Pump Unit via the Remote Box and 731 Relay Box ....12 Figure 9 Direction of rotation ................ 13 Figure 10 Calculation formula for the permeability (C) ........
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Page 9: Introduction
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. -
Page 10: About The Documentation
This symbol draws attention to a possible hazard due to heat or hot instrument parts. WARNING This symbol draws attention to a possible biological hazard. CAUTION This symbol draws attention to possible damage to instruments or instrument parts. ￭￭￭￭￭￭￭￭ 772 Pump Unit... -
Page 11: Safety Instructions
The electrical safety when working with the instrument is ensured as part of the international standard IEC 61010. WARNING Only personnel qualified by Metrohm are authorized to carry out service work on electronic components. WARNING Never open the housing of the instrument. The instrument could be damaged by this. -
Page 12: Tubing And Capillary Connections
Recycling and disposal This product is covered by European Directive 2012/19/EU, WEEE – Waste Electrical and Electronic Equipment. The correct disposal of your old instrument will help to prevent negative effects on the environment and public health. ￭￭￭￭￭￭￭￭ 772 Pump Unit... - Page 13 ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 1 Introduction More details about the disposal of your old instrument can be obtained from your local authorities, from waste disposal companies or from your local dealer. ￭￭￭￭￭￭￭￭ 772 Pump Unit...
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Page 14: Overview Of The Instrument
￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 2 Overview of the instrument Figure 1 Front 772 Pump Unit Status LED Locking lever with clamping screw For displaying the operating state. Pressure clamp Rotor For the counterpressure to the pump tubing. Tubing clamp (outlet) Tubing clamp (inlet) -
Page 15: Installation
Selecting the correct pump tubing is very important for its function and lifetime (see chapter 5, page 15). 1 Cut the pump tubing to a length of approx. 17 cm. 2 Insert the tubing olives (6.1820.050) into the two tubing ends. Figure 2 Inserting the tubing olives ￭￭￭￭￭￭￭￭ 772 Pump Unit... -
Page 16: Figure 3 Installing The Pump Tubing
4 Press on the pressure clamp 5 and fasten it in place using the locking lever 4. Figure 4 Fastening the pressure clamp in place 5 Tighten the clamping screw 4 so that the pump tubing cannot slip. With the pump running, gently tighten the clamping screw until the ￭￭￭￭￭￭￭￭ 772 Pump Unit... -
Page 17: Installing The Inlet Tubing And Outlet Tubing
Install the inlet tubing and outlet tubing as follows: 1 Cut the inlet tubing and outlet tubing to the suitable length. 2 Connect the tubings to the tubing olives of the pump tubing using union nuts. Figure 5 Connecting the tubings ￭￭￭￭￭￭￭￭ 772 Pump Unit... -
Page 18: Connecting The Peristaltic Pump
The instrument can be damaged if operated with the wrong supply voltage. Voltage The 772 Pump Unit needs 16 - 24 V DC voltage. It can be connected directly to Sample Processor models 814, 815, 855 or 864. When using the 772 Pump Unit in an automation system with remote control, we recommend using a 731 Relay Box for the power supply. -
Page 19: Connection To A Sample Processor
Connect the 772 Pump Unit with connection via the Remote Box (6.2148.010) and the 731 Relay Box to a remote interface. Connect the M8 plug (1-7) of the 772 Pump Unit to the corresponding ￭ socket on the adapter cable. -
Page 20: Figure 8 772 Pump Unit Via The Remote Box And 731 Relay Box
￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 3.3 Connecting the peristaltic pump Figure 8 772 Pump Unit via the Remote Box and 731 Relay Box Sample Processor 814, 815, 855, 864 Remote Box (6.2148.010) Connection via remote interface. Remote cable (6.2125.100) 731 Relay Box (2.731.0010) Adapter cable (6.2160.010) -
Page 21: Figure 9 Direction Of Rotation
Correct direction of rotor rotation with cor- rect polarity (clockwise). Inlet NOTICE For information on controlling the 772 Pump Unit using the 731 Relay Box and a suitable control device, refer to the manual of the 731 Relay Box. ￭￭￭￭￭￭￭￭... -
Page 22: Operation
￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 4 Operation The 772 Pump Unit does not have its own operating units. It is operated and controlled via the main instrument in the linked system. ￭￭￭￭￭￭￭￭ 772 Pump Unit... -
Page 23: Operation And Maintenance
5.1.2 Maintenance by Metrohm Service Maintenance of the 772 Pump Unit is best carried out as part of an annual service, which is performed by specialist personnel of the Metrohm com- pany. If working frequently with caustic and corrosive chemicals, a shorter maintenance interval could be necessary. -
Page 24: Pump Tubings
Always use tubings particularly intended for peristaltic pumps. The 772 Pump Unit is shipped with PharMed® pump tubing (6.1826.100, ø 6.4/9.6 mm, see Chapter 5.2.5) made of thermoplastic polypropylene, which is highly suitable for aqueous media. -
Page 25: Suitability Test For Tubing Materials
Properties of the pumped liquid ￭ Outlet pressure ￭ Ambient temperature ￭ Shearing force of the rollers ￭ Twisted or kinked tubing ￭ Tubing too long ￭ Wall thickness of 1.6 mm not complied with ￭ ￭￭￭￭￭￭￭￭ 772 Pump Unit... -
Page 26: Pharmed® Pump Tubing Data Sheet
Additives can be dissolved out by the pumped medium. Applications: Acids Good resistance Bases Good resistance Solvents Not suitable Pressure Well suited Vacuum Very well suited Viscous media Well suited Sterile media Very well suited Temperature range –60 - +130 °C ￭￭￭￭￭￭￭￭ 772 Pump Unit... -
Page 27: Viton® Pump Tubing Data Sheet
Outstanding Bases Outstanding Solvents Limited Pressure Not recommended Vacuum Good Viscous media Good Sterile media Satisfactory Temperature range –31 °C - +204 °C Permeability (C) for: Corresponds to the fol- None lowing standards: Cleaning/sterilization Not recommended ￭￭￭￭￭￭￭￭ 772 Pump Unit... -
Page 28: Tubings
￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 5.3 Tubings Tubings The tubing requires regular inspection in order to work properly: Do not kink PTFE tubing. ￭ Ensure resistance to solvents. ￭ Check the tubing regularly for any damage. ￭ ￭￭￭￭￭￭￭￭ 772 Pump Unit... -
Page 29: Troubleshooting
The pressure is too high. Loosen the locking lever of the pressure clamp tion of the pump slightly. tubing is dripping or If necessary, also use a cable tie to tie down spraying. the cable ends at the tubing olives. ￭￭￭￭￭￭￭￭ 772 Pump Unit... -
Page 30: Technical Specifications
16 - 24 V DC ≤ 550 mA Power consump- tion Interfaces and connectors The 772 Pump Unit does not have any control interfaces. It is operated and controlled via the power supply. Ambient temperature Nominal function +5 - +45 °C... -
Page 31: Reference Conditions
+25 °C (±3 °C) ture ≤ 60% Relative humidity Dimensions/material Width 100 mm Height 210 mm Depth 260 mm Weight 3.20 kg (without accessories) Material Housing, upper Polyurethane, coated part Bottom part of Steel sheet, stove-enameled housing ￭￭￭￭￭￭￭￭ 772 Pump Unit... -
Page 32: Accessories
The PDF file with the accessories data is created. NOTICE Once you have received your new product, we recommend download- ing the accessories list from the Internet, printing it out and keeping it together with the manual for reference purposes. ￭￭￭￭￭￭￭￭ 772 Pump Unit... -
Page 33: Index
Electrostatic charge ....4 Flow rate ......22 Supply voltage ......3 Power supply Power consumption .... 22 Front of the instrument ....6 Voltage ......22 Tubing Problems ........21 Maintenance ...... 20 Instrument description ....1 ￭￭￭￭￭￭￭￭ 772 Pump Unit...
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