Doosan G20 SIIIA, Руководство по эксплуатации и техническому обслуживанию

Страница: 115 / 122

115 G20, 30, 40 SIIIA Operation & Maintenance Manual
DISMANTLING, REASSEMBLY
CAUTION
During the warranty period, this operation should
only be carried out in an LEROY-SOMER approved
workshop or in our factory, otherwise the warranty
may be invalidated. Whilst being handled, the
machine should remain horizontal (rotor not locked
in position). Check how much the machine weighs
before choosing the lifting method.
Tools required
To fully dismantle the machine, we recommend using the
tools listed below:
• 1 ratchet s extension
• 1 torque wrench
• 1 set of flat spanners: 8 mm, 10 mm, 18 mm -1 socket
set: 8, 10, 13, 16, 18, 21, 24, 30 mm
• 1 socket with male ferrule: 5 mm
• 1 puller
Screw tightening torque
See pages 118, 119 and 120.
CAUTION
The screws for fixing the feet on the housing and
immobilising the stator must not be removed (bolt of
the stator lower).
Access to connections and the regulation system
The terminals and AVR are accessed directly by
removing the terminal box lid (41).
AVR is accessed directly by removing the terminal box
lid
Accessing, checking and replacing the diode bridge
Dismantling
• Remove the terminal box lid [41].
• Cut the fixing clamps of the exciter cables, disconnect
E+, E- from the exciter.
• Remove the 4 nuts on the tie rods.
• Remove the NDE shield [36] using a puller:
eg. U.32 - 350 (Facom).
• Unsolder the connections.
• Check the bridge using an ohmmeter or a battery
lamp.
Reassembly
• Replace the bridges, respecting the polarity.
• Resolder the connections.
• Fit a new O ring seal in the shield.
• Refit the NDE shield and pass the bundle of wires
between the top bars of the shield.
• Replace the fixing clamps on the cables.
• Replace the terminal box lid [41].
Rotor
NDE shield
M10 threaded rod