Lorentz ECDRIVE 150 C - Table of Contents

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BERNT LORENTZ GmbH & Co. KG
Siebenstücken 24, 24558 Henstedt-Ulzburg, Germany,
Tel (+49) 0 4193 8806-700, Fax -708, www.lorentz.de
Troubleshooting guide for LORENTZ ECDRIVE submersible
Version: V171115
All specifications and information are given with good intent, errors are possible and products may be subject to change without notice.
Pictures may differ from actual products depending on local market requirements and regulations.
Content
1 Overview ................................................................................................................................................. 3
2 Outer observations .................................................................................................................................. 4
2.1 Visual inspection .................................................................................................................................... 4
2.2 Electrical inspection ............................................................................................................................... 4
2.3 Mechanical inspection ........................................................................................................................... 9
2.4 Running Test ........................................................................................................................................ 10
3 Inner observations ................................................................................................................................. 12
3.1 Investigate the water inside the motor ............................................................................................... 12
3.2 Rear cover filled with mud ................................................................................................................... 12
3.3 Mechanical damage rear bearing assembly and axial bearing ........................................................... 13
3.4 Worn out/jammed ECDRIVE shaft on the radial bearings ................................................................... 14
3.5 Melted POM tube ................................................................................................................................ 14
4 Root cause for damages ......................................................................................................................... 15