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Installation, operation and maintenance instructions
High voltage flameproof motors for explosive atmosphere
AMD Rg 355-400-450-500
Maintenance plan
Issued by: MOLM
Sheet No
3AAM101038 E
Rev. B
01.2023
Page 1 of 1
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Part of
machine
Maintenance or inspection work
Wee
kly
Mon
thly
Qu
arter
ly
Annually
Ev
er
y
2
ye
ar
s
Ov
erha
ul
Foundation and
basement
Check tightness of machine foundation bolts and state of
locking elements.
Coupling joint
Check state of alignment of the coupling and record
measurements.
2)
Maintenance of coupling in accordance with coupling
manufacturer’s instructions
Whole machine
Pay attention to unusual machine noise or change in
noise (e.g. rubbing or knocking sounds, etc.).
1)
Visually check the degree of dirt deposit inside the
machine.
Bearings
See relevant maintenance sheets according to the type of bearings
(vibration level control is contained in these sections)
Stator winding
Measure temperature at provided measuring points
( e.g., built-in RTD’s).
1)
Measure dielectric resistance.
1)
Dielectric condition diagnosis.
Visual inspection
of machine inside
and outside
Visual check at all accessible points for rust.
3)
Main terminal box Visual check for cleanness and absence of moisture from
condensation
Check for tightness and state of conductors, terminals
and locking elements
REMARK: at reassembling of box cover smear the surfaces of the flame joint with the prescribed silicon grease
Auxiliaries terminal
boxes.
Visual check for cleanness and absence of moisture from
condensation
Check conditions and fastening of all supply cables and
connections.
REMARK: at reassembling of box cover smear the surfaces of the flame joint with the prescribed silicon grease
Fan drive motor
and fittings
(if provided)
Visual inspection for rust and dirt
Check of vibration level
3)
1) Compare with previous measurements and observations.
2) In case of vibration level increase, inspect as soon as possible and increase the check frequency.
3) Remove rust. Select method and means to suit the component involved.
REMARK : always check that the flame tightness joints dimensions remain into the prescribed
tolerances and with the prescribed surface rugosity!