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Purifier Unit 150

Service Manual

Alfa Laval reserves the right to make changes at any time without

prior notice.

Any comments regarding possible errors and omissions or

suggestions for improvement of this publication would be

gratefully appreciated.

Copies of this publication can be ordered from your local

Alfa Laval company.

Published by: Alfa Laval Marine & Power AB

S - 147 80 Tumba

Sweden

© Copyright Alfa Laval Marine & Power AB 2000.

Contents

1810664-02

1 Separator Basics .1

1.1 Design and function 1

1.1.1 Application .1

1.1.2 Design 2

1.1.3 Outline of function 2

1.1.4 Separating function 3

1.1.5 Sludge discharge function .5

1.1.6 Power transmission 7

1.1.7 Sensors and indicators .8

1.2 Definitions 9

2 Service Instructions .10

2.1 Periodic maintenance .10

2.1.1 Introduction .10

2.1.2 Maintenance intervals 10

2.1.3 Maintenance procedure .12

2.1.4 Service kits .12

2.2 Maintenance Logs 13

2.2.1 Daily checks .13

2.2.2 Oil change - monthly 13

2.2.3 IS - Intermediate Service 14

2.2.4 MS - Major Service .15

2.3 Check points at Intermediate

Service .17

2.3.1 Corrosion 17

2.3.2 Erosion 19

2.3.3 Cracks 20

2.3.4 Discharge mechanism .21

2.3.5 Bowl hood and sliding bowl bottom .21

2.3.6 Spindle top cone and bowl body nave 24

2.3.7 Threads of inlet pipe, paring disc 24

2.3.8 Threads on bowl hood and bowl body.25

2.3.9 Priming of bowl parts 26

2.3.10 Disc stack pressure 27

2.4 Check points at Major Service .28

2.4.1 Paring disc height adjustment 28

2.4.2 Radial wobble of bowl spindle .29

2.5 3-year service 30

2.6 Lifting instructions 31

2.7 Cleaning 32

2.7.1 Cleaning agents .33

2.7.2 Cleaning of bowl discs .34

2.8 Oil change .35

2.8.1 Oil change procedure 35

2.9 Vibration 37

2.9.1 Vibration analysis 37

2.9.2 Vibration switch (optional) 38

2.10 General directions .39

2.10.1 Ball and roller bearings 39

2.10.2 Before shut-downs 42

3 Dismantling/Assembly .43

3.1 Inlet/outlet and bowl .45

3.1.1 Inlet/outlet and bowl - dismantling .48

3.1.2 Inlet/outlet and bowl - assembly 53

3.2 Bowl spindle and frame 63

3.2.1 Bowl spindle and frame - dismantling .63

3.2.2 Bowl spindle and frame - assembly .69

3.3 Friction coupling .77

3.3.1 Friction coupling - dismantling .78

3.3.2 Friction coupling - assembly 80

3.4 Flat belt and tightener 83

3.4.1 Belt replacement and tightening 83

3.5 Oil filling device 88

3.5.1 Dismantling/assembly 88

3.6 Water tank 89

3.7 Brake 89

3.7.1 Exploded view 89

3.7.2 Checking of friction element .90

3.8 Frame feet 91

3.8.1 Mounting of new frame feet 91

4 Technical Reference 92

4.1 Technical data 92

4.2 Connection list 94

4.3 Basic size drawing .96

4.3.1 Dimensions of connections 97

4.4 Interface description 98

4.4.1 General .98

4.4.2 Definitions .98

4.4.3 Component description and signal

processing 99

4.5 Water quality 101

4.6 Lubricants .103

4.6.1 Lubrication chart .103

4.6.2 Alfa Laval lubricating oil groups .104

4.6.3 Recommended lubricants 106

4.6.4 Recommended lubricating oils .108

4.6.5 Recommended oil brands 109

4.7 Drawings .111

4.7.1 Foundation plan 111

4.7.2 Electric motor . 112

4.7.3 Machine plates and safety labels 114

4.7.4 Gravity disc nomogram . 116

4.8 Storage and installation 118

4.8.1 Storage and transport of goods 118

4.8.2 Planning of installation . 121

4.8.3 Foundations . 123

5 Change of Circuit Board 124

5.1 Circuit Board Temperatures 126

6 Cleaning in Place .127

6.1 Cleaning in Place,

Heatpac® CBM Heater . 127

7 Heatpac® CBM Heater

(Optional) .129

7.1 Technical Data 129

7.1.1 Manual Cleaning 129

8 Heatpac® EHM

Electric Heater (Optional) .130

8.1 Technical Data 130

8.2 Dismantling and Cleaning . 131

8.2.1 Replacing Heater Element . 132

8.2.2 Insulation Resistance Megger Test . 133

8.2.3 Measuring of

Heater Block Resistance 135

9 Heatpac® Power Unit

(Optional) .137

9.1 Technical Data 137

9.2 Working principle 138

9.3 Electric Heater Function . 138

9.4 Heating Performance

Principle 139

9.5 Load Control and Functions . 140

9.5.1 Variable Part Load 140

9.5.2 Fixed Part Load 140

9.5.3 External Safety Stop . 140

9.5.4 Start and Reset Functions 141