4.5.3 Operating under freezing conditions ............................................................................................. 27
4.6 Shutdown ................................................................................................................................................27
4.7 Final alignment ........................................................................................................................................27
4.8 Interlocks .................................................................................................................................................28
5 Preventative Maintenance ..............................................................................................................................29
5.1 General comments ..................................................................................................................................29
5.2 Maintenance schedule ............................................................................................................................29
5.3 Maintenance of bearings .........................................................................................................................29
5.3.1 Oil lubricated bearings ..................................................................................................................29
5.3.2 Grease lubricated bearings ...........................................................................................................31
5.4 Maintenance of shaft seals......................................................................................................................33
5.4.1 Mechanical seals...........................................................................................................................33
5.5 Rotor axial clearance setting ...................................................................................................................33
5.6 Dial indicator method...............................................................................................................................34
5.7 Feeler gauge method ..............................................................................................................................34
5.8 Mixer washdown......................................................................................................................................35
6 Disassembly and Reassembly .......................................................................................................................37
6.1 Required tools .........................................................................................................................................37
6.2 Preparation for disassembly....................................................................................................................37
6.3 Disassembly ............................................................................................................................................38
6.4 Removal of rotor......................................................................................................................................39
6.5 Removal of Taperbore™ PLUS seal chamber and mechanical seal....................................................... 40
6.6 Disassembly of bearing frame.................................................................................................................41
6.7 Inspections ..............................................................................................................................................42
6.8 Casing .....................................................................................................................................................42
6.9 Rotor........................................................................................................................................................42
6.10 Seal chamber ........................................................................................................................................42
6.11 Bearing frame ........................................................................................................................................43
6.12 Reassembly..........................................................................................................................................43
6.13 Reassembly of bearing frame ...............................................................................................................45
6.14 Reassembly of taperbore™ plus seal chamber and mechanical seal................................................... 51
6.15 Installation of rotor.................................................................................................................................51
6.16 Installation of casing foot and alignment pin ......................................................................................... 52
6.17 Installation of back pull-out assembly.................................................................................................... 53
7 Spare Parts ......................................................................................................................................................56
7.1 Recommended spare parts .....................................................................................................................56
7.1.1 Most desirable spare parts............................................................................................................56
7.1.2 Recommended spare parts...........................................................................................................56
7.1.3 Minimum recommended spare parts............................................................................................. 56
7.2 3501 Mixer cross sectional and parts list with materials of construction ................................................. 57
7.3 How to order............................................................................................................................................58
7.4 Emergency service..................................................................................................................................58
Table of Contents
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3501 Installation, Operation, and Maintenance Instructions
