BÜCHI
Recirculating Chiller
B-740
11
6 Maintenance
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
Table 4: Malfunctions and their rectification
Malfunction
Possible cause
Remedy
Warnung on
Colling off
Pump on
Ambient temperature too high
Soiled liquidator
Change position of the apparatus
Remove front plate; clean lamella with brush or
hoover
Warnung on
Colling off
Pump on
no / too few cooling liquid
Pumpe defekt
Fill up cooling liquid
Please contact customer service
