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This applies in particular to trademarks, model denominations, part numbers and drawings. This instruction book meets the requirements for instructions specified by the machinery directive 98/37/EC and is valid for CE as well as non-CE labelled machines. Note: The PED instructions for this machine are included at the end of the book. No. 2920 1521 00 Registration code: APC SF / 38 / 980 2003-10 2920 1521 00 1 Instruction book This instruction book describes how to handle the machines to ensure safe operation, optimum efficiency and long service life. Read this book before putting the machine into operation to ensure correct handling, operation and proper maintenance from the beginning. The maintenance schedule comprises measures for keeping the machine in good condition. Keep the book available for the operator and make sure that the machine is operated and that maintenance is carried out according to the instructions. Record all operating data, maintenance performed, etc. in an operator's logbook available from Atlas Copco. Follow all relevant safety precautions, including those mentioned on the cover of this book. Repairs must be carried out by trained personnel from Atlas Copco who can be contacted for any further information. In all correspondence mention the type and the serial number, shown on the data plate. For all data not mentioned in the text, see sections "Preventive maintenance schedule" and "Principal data". The company reserves the right to make changes without prior notice. 2920 1521 00 2 Instruction book 1 LEADING PARTICULARS................................................................................................................... 5 1.1 General description........................................................................................................................ 5 1.1.1 Compressor variants ............................................................................................................... 5 1.1.2 Compressor elements (Fig. 1.1).............................................................................................. 5 1.2 Air flow ........................................................................................................................................... 9 1.3 Cooling and condensate drain systems (Fig. 1.9) ......................................................................... 9 1.4 Regulating system on SF Skid - Tank-mounted - Twin ............................................................... 10 1.5 Regulating system on SF Multi .................................................................................................... 11 1.5.1 Controlling the compressor ................................................................................................... 11 1.5.2 Protecting the compressor .................................................................................................... 11 1.5.3 Monitoring components subject to service............................................................................ 11 1.5.4 Automatic restart after voltage failure ...................................................................................11 1.5.5 Control panel (Fig. 1.11) ....................................................................................................... 12 1.5.6 Display – keys ....................................................................................................................... 13 1.5.7 Function keys (5-Fig. 1.11) ................................................................................................... 13 1.6 Electric cabinet on SF Multi ......................................................................................................... 15 1.7 Air dryer on SF Full-Feature (Fig. 1.15)....................................................................................... 16 2 INSTALLATION ................................................................................................................................. 17 2.1 Dimension drawings (Figs. 2.1 up to 2.5) ....................................................................................17 2.2 Installation proposal (Fig. 2.6) ..................................................................................................... 22 2.3 Electrical connections .................................................................................................................. 24 2.4 Pictographs .................................................................................................................................. 27 3 OPERATING INSTRUCTIONS .......................................................................................................... 28 3.1 Initial start-up ............................................................................................................................... 28 3.2 Starting.............................................................................................