Mechanical Anomaly - Doosan G60XW/XF Operation & Maintenance Manual

MECHANICAL ANOMALY

TROUBLE
Winding temperature raised.
Air cooling temperature raised.
Noise, high vibrations.
Bearings temperature raised.
OPERATION & MAINTENANCE MANUAL
POSSIBLE CAUSE
a) High ambient temperature.
b) Hot air reflow.
c) Source of heat in the proximity.
d) Plant of defective cooling.
e) Loopholes of the air obstructed.
f) Air filter very dirty.
g) Reduced air flow.
h) Speed less than rated.
i) Defective of measurement system.
j) Overload.
k) Load with cosfì below to 0,8.
a) Insufficient base structure or not
suitable antivibration, incorrect fixing to
the basement.
b) Defective coupling.
c) Defective cooling fan, unbalanced
rotor.
d) Excess of unbalanced load, Single
phase loads.
e) Malfunctioning bearing.
a) Malfunctioning bearing.
b) Axial or radial load too high.
REMEDY
(always to be done with the machine
switched off - SAFETY HAZARD)
a) Ventilate in order to reduce the ambient
temperature.
b) Create sufficient free space around to
the machine.
c) Remove the heat sources.
d) Inspect conditions system and correct
assembly.
e) Clean up the loopholes from eventual
detritus.
f) Clear or substitute the filter.
g) Remove the obstacles and assure that
the air flow is enough.
h) Check rpm (frequency).
i) Check the thermodetectors.
j) Eliminate the overload to cool the
genset before restarting it.
k) Verify the values of the load, cosfì must
be 0,8 or to reduce the load.
a) Strengthen the base, replace the
antivibration, cross the screw again on the
base.
b) Review the alignment, the fixing of the
disc on they fly motor and of the D-end
shield on the first motor.
c) Check and repair the cooling fan, clean
the rotor and rebalancing.
d) Check that the load is conforming to the
requisite.
e) Replace bearing.
a) Replace bearing.
b) Check the alignment and check the
coupling of the genset.
50 Hz: G60 - G80 - G115 - G150 - G200XW/XF
106 60 Hz: G65 - G100 - G135 - G170 - G225XW/XF