Taking out of operation Appendix Read through these operating instructions thoroughly before you use the BÜCHI Recirculating Chiller 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.
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1 Scope of delivery BÜCHI Recirculating Chiller B-740 1 Scope of delivery Description Apparatus versions: Order no. Büchi Recirculating Chiller B-740 230 V Model 800 Watt 37740 Model 1400 Watt 37741 Model 2500 Watt 40300 Table 1: Scope of delivery...
BÜCHI Recirculating Chiller B-740 2 Safety 2 Safety The apparatus is constructed in accordance with state- of-the art technology and recognized technical safety regulations. Nevertheless risks and danger can arise from the appara- tus: • if the apparatus is not used according to instructions.
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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 apparatus. The operator is responsible for the instruction of his or her personnel.
Rotavapor R-220. The temperature range extends from -10°C to 20°C, alt- hough heating is not possible. The B-740 regulates the temperature to within +/- 1 K exactly. The desired value is simply entered with two keys (UP and DOWN) and can be easily read from the LCD display (desired and actual temperatures).
(suf- ficient cooling). • Place the B-740 on a horizontally level, solid base • Connect out flow and return flow connections of the B-740 with the cooler of the rotary evaporator. Only use hoses which can withstand min.
BÜCHI Recirculating Chiller B-740 5 Operation 5 Operation The apparatus is not splash-proof. 5.1 Operatingelements Indicate set temperature Increase set temperature ∇ Reduce set temperature WARNING indicator in the case of malfunction COOLING Cooling indicator PUMP Indicator for circulating pump...
6 Maintenance BÜCHI Recirculating Chiller B-740 6 Maintenance All information which is directed at maintaining the Re- circulating Chiller in an operationally reliable condition is to observed. This also includes a periodic cleaning and inspection for possible damage. 6.1 Cleaning...
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6.3 Functional inspection After every operation, the following parameters are to be checked: • Filling level cooling liquid • Turning on the B-740 • Cooling on / Pump on • Control set point value 6.4 Malfunctions and their rectification Malfunction...
7 Taking out of operation BÜCHI Recirculating Chiller B-740 7 Taking out of operation 7.1 Storage/shipping The cooling liquid is to be drained before storage or ship- ping. The apparatus is to be stored in the original packaging in a dry location. Shipping is also to be done in the original packaging.
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