Spare Parts - Nomenclature - MarelliMotori MJB-Serie Bedienungs- Und Wartungsanleitung

8.2 Mechanical anomaly
TROUBLE
Winding temperature
a)
raised.
b)
Air cooling temperature
c)
raised.
d)
e)
f)
g)
h)
i)
j)
k)
a)
Noise, high vibrations.
b)
c)
d)
e)
a)
Bearings temperature
raised.
b)

9. SPARE PARTS - NOMENCLATURE

Part name
Pos.
201 D side (D:E) bearing
202 N side (N.D.E.) bearing
309 N° 3 rotating diodes (inverse)
310 N° 3 rotating diodes (direct)
311 Surge suppressor
119 Complete rotating rectifier
963857101_G
All manuals and user guides at all-guides.com
POSSIBLE CAUSE
High ambient temperature
Hot air reflow
Source of heat in the proximity
Plant of defective cooling
Loopholes of the air obstructed
Air filter very dirty
Reduced air flow
Defective of measurement System
Overload
Load with cosfì below to 0,8
Speed less than rated.
Insufficient base structure or not
suitable antivibration, incorrect fixing to
the basement
Defective coupling
Defective cooling Fan, unbalanced rotor
Excess of unbalanced load, Single
phase loads
Malfunctioning bearing
Malfunctioning bearing
Axial or radial load too high
Type / Code
MJB 250
6218 C3 / 346110114
6313 2Z C3 / 346114065
41 HFR 80 / 963821112
41 HF 80 / 963821113
M16FA864A
M25FA648B
27
REMEDY
(always to be done with the machine switched off)
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, assure that the air flow is
enough
h) Check the thermodetectors
i) Eliminate the overload. To cool the genset before
restarting it
j) Verify the values of the load, cosfì must be 0,8 or to
reduce the load
k) Check rpm (frequency).
a) Strengthen the basement, replace the antivibration,
cross again the screw 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 to 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
MJB 315
6319 C3 / 346151095
6315 2Z C3 / 346114075
71 HFR 120 / 963821170
71 HF 120 / 963821171
27
ENGLISH
MJB 355
6322 C3 / 346151110
6317 2Z C3 / 346114085
M40FA990A
M40FA500A