Disassembly And Regressive Assembly; Dismantling And Reassembling Machines 1D; Fig. 14 Dismantling And Reassembling - Siemens 1D Series Operating Manual

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6 Disassembly and regressive assembly

6.1 Dismantling and reassembling machines 1D

This work must always take place in a clean, dust free and dry environment.
Power cables must be disconnected. CAUTION! – this work may be carried out by a qualified worker only.
Auxiliary circuits of regulation, checking and protective circuits are connected in an LV terminal box and are
disconnected in case of a total generator dismantling only. If rectifier is to be replaced, only its cooler (01) is
removed. Bearings are replaced after removing bearing caps bolts (03) and bolts tightening bearing cap (02).
After the shaft is picked up the bearing cap can be taken out on rear side (04) and after removing rectifier
carrier (05) also bearing cap on machine front side (06) can be removed.
For checking rotor and stator windings it is necessary to dismantle the machine, i.e. to disconnect all
cables in LV terminal box and power cables, to remove bolts (07) and cooler extension (08), to loosen bolts
(09) and remove shields. Checks of power cables connection can be carried out after removing the extension
guard opposite cable outlets (10).
For oil checking and exchange in sliding bearings (11) – see Operator's Instructions.
Generator reassembly is carried out in reverse sequence of operations. In order not to apply any force,
appropriate tools must be used for reassembly.
If the generator differs from the basic model, e.g. by an arrangement of feet with two bearings,
dismantling and reassembling may be different in some way. In case of variants equipped with air filter, air
water cooler, other guard, special shape or mechanical design always complementary instructions are
enclosed.
Keep a record of dismantling in the operational log.
Product documentation 1D 3.8.en

Fig. 14 Dismantling and reassembling

Rev. E, 10/13
page 38/42