Mechanical Faults - Siemens 1PH818 Operating Instructions Manual

Operation
8.5 Faults
8.5.2

Mechanical faults

NOTICE
Damage to the machine caused by faults
Correct the cause of the fault as specified in the remedial measures section. Repair any
damage to the machine.
Table 8-2 Mechanical faults
↓ Grinding noise
↓ Overheating
↓ Radial vibrations
↓ Axial vibrations
↓ Water drains out
Possible causes of faults
X Rotating parts are grinding
X Cooling water switched off
X Rotor not balanced
X Rotor out of true, shaft bent
X X Poor alignment
X Coupled machine not balanced
X Shocks from coupled machine
X X Imbalance originating from gearing
X X Resonance with the foundations
X X Changes in foundation
X Cooling water pipes defective
Water connection defective
Take into account possible changes which may occur during overheating.
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Remedial measures
Establish the cause and realign the parts.
Switch the cooling water supply on.
Decouple the rotor and then rebalance it.
Consult the manufacturing plant.
Align the machine set and check the coupling.
Rebalance the coupled machine.
Examine the coupled machine.
Fix the gearing.
Stabilize the foundation following consultation.
Determine the cause of the changes and, if
necessary, rectify. Realign the machine.
Locate the non-watertight section and seal it or
consult the manufacturer.
Siemens AG Operating Instructions V1.0 1PH8
1)
A5E02605207A AA