4. If you discover that there are heavy deposits inside the cooling coil, arrange for the cooling
water or the deposits to be analysed.
Analysis services of this kind are offered by specialist chemical cleaning companies. These
companies also sell special cleaning agents for removing deposits. Before you use a
cleaning agent, check whether it is suitable for use on the cooling coil materials. You must
consult Flender Customer Services. Carefully read the instructions for use supplied by the
manufacturer before using different kinds of cleaning agent.
5. If the cooling coil is severely soiled, it must be replaced by a new one.
Please consult Flender Customer Services for further advice.
6. Reconnect the cooling water inlet and drain lines to the cooling coil.
8.3.6 Check that all of the fastening bolts are tight
Procedure
Proceed as follows to check that the fastening bolts are tight:
1. Observe the data regarding connection classes (Page 74), preload forces and tightening
torques (Page 74).
2. Replace any bolts that are no longer fit for use by bolts of the same strength class and type.
8.3.7 General inspection of the gear unit
General inspection of the gear unit by Customer Services
Arrange for Flender Customer Services to perform a general inspection on the gear unit.
Thanks to their experience, these engineers are best placed to assess which gear unit
components need to be replaced.
8.3.8 Final work
After you have finished all the work listed in the maintenance schedule, replace any bolts that
are no longer fit for use by bolts of the same strength class and type.
8.4 Possible faults
The faults listed below are only intended as a troubleshooting guide.
If any faults occur while the unit is still under warranty, do not allow anyone except Flender
Customer Services to attempt a repair.
Servicing
8.4 Possible faults
Gear unit 5118en
90 Operating Instructions 10/2017
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