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BÜCHI 

Recirculating Chiller

 B-740

9

5 Operation

                                                                                                               

   

 

 

 

 

 

 

 

Turn on apparatus

Key

Operation

Display

Function

ON

e. g. 25.0
(actual temp.) 

• Displays the actual temperature  
• Set desired temperature compressor start
• Circulation pump is running

SET 

shortly 
press

e.g. 10.0

• Display the set temperature

SET + 

D

press

e.g. 10.00

• Increase the desired set temperature in steps of 0.1°C   

SET + 

press

e.g. 10.0

• Decrease the desired set temperature in steps of 0.1°C

 

 

 

 

 

 

 

 

 

 

              

 

                    

The apparatus is not splash-proof.

5.1 Operatingelements

SET

Indicate set temperature 

 D

Increase set temperature

 ∇

Reduce set temperature

WARNING

indicator in the case of malfunction

COOLING

Cooling indicator 

PUMP

Indicator for circulating pump

   

 a

desired set temperature achieved, 
regulation runs

 

 

 

 

 

 

 

 

 

 

 

 

       5 Operation  

The COOLING and PUMP lamps are always on in normal
operation.

Figure 6: Operating component

Summary of Contents for B-740

Page 1: ...Operation Manual 096691 en B 740 Recirculating Chiller...

Page 2: ......

Page 3: ...B 740 Keep these instructions in the immediate area of the apparatus so that they can be referred to at any time Chapter 2 contains important safety tips Knowledge of these is indispensable for the s...

Page 4: ...del 2500 Watt 40300 Table 1 Scope of delivery Enclosed parts 1 Instructions Deutsch 96690 English 96691 French 96692 Italian 96693 Spanish 96694 1 Mains cable PNE 2 5 m Type CH 10010 Type Schuko 10016...

Page 5: ...injuries Warning Information on the dangers which can lead to damage to one s health or to damage to property Please note Information which indicates technical requirements Non compliance can lead to...

Page 6: ...such as safety glasses is necessary These operating instructions must as a component of the Recirculating Chiller B 740 be available at all times to the operating personnel at the place of use of the...

Page 7: ...icient for cooling two rotary evapo rators The 2500 watt version has enough cooling capacity to perfectly fit to Rotavapor R 220 The temperature range extends from 10 C to 20 C alt hough heating is no...

Page 8: ...usual hose clamps Close the drain cock Fill the cooling liquid in the filling connections approx 2 3 of the inspection glass level We recommend a mixture of ethylene glycol 30 70 which does not freeze...

Page 9: ...desired set temperature in steps of 0 1 C SET press e g 10 0 Decrease the desired set temperature in steps of 0 1 C The apparatus is not splash proof 5 1 Operatingelements SET Indicate set temperatur...

Page 10: ...can only be carried out by authorized service personnel These are persons with a sound technical training and knowledge of the dangers which can result from not following safety precautions B chi cust...

Page 11: ...point value 6 4 Malfunctions and their rectification Table 4 Malfunctions and their rectification Malfunction Possible cause Remedy Warnung on Colling off Pump on Ambient temperature too high Soiled...

Page 12: ...ping is also to be done in the original packaging 7 2 Disposal In order that the apparatus be disposed of in the most proenvironmental manner possible there is in Chapter 8 2 Materials used a list of...

Page 13: ...n 11 l min Pumping pressure max 0 6 bar 1 bar 1 bar Refrigerant R134a Apparatus dimensions w x h x d mm 400 x 570 x 450 400 x 670 x 450 550 x 1100 x 450 Weight 42 45 99 Ambient temperature 15 C 32 C T...

Page 14: ...ormity declaration Konformit tserkl rung Declaration of Confirmity Chiller B 741 Recirculating Chiller B 740 Dehumidifier B 296 EN 61010 1 2002 08 EN 61010 2 010 A1 EN 61326 1 2006 2006 95 EC 2004 108...

Page 15: ......

Page 16: ...B CHI Labortechnik AG CH 9230 Flawil 1 Switzerland T 41 71 394 63 63 F 41 71 394 65 65 www buchi com Quality in your hands...

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