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Installation, operation and maintenance instructions
High voltage flameproof motors for explosive atmosphere
AMD Rg 355-400-450-500
Transport and storage cares of Electrical Machines
rodents. The data for "Indoor storage" applies
similarly.
Important!
The sealed wrappings should not be opened en route
or during handling. The customs authorities and
forwarding agents should therefore be informed in
good time of the forthcoming arrival of such
consignments and arrangements made with the
customs authorities to have the goods inspected on
site.
Checking the humidity (if provided)
Small bags containing an adequate quantity of
desiccant are suspended inside the sealed wrapping
to absorb any moisture penetrating through the
wrapping. The moisture content can be read off on
the indicator suspended inside the wrapping.
Humidity indicator, blue = Desiccant
Humidity indicator, red = Presence
The
humidity
reconditioned by inserting new or reconditioned
desiccant in the wrapping.
To recondition the desiccant, take it out of the bags
and spread it thinly in a pan. Then dry it for about 12
hours at a temperature of 120 to 130°C, stirring it
regularly (do not overheat, otherwise it will become
completely useless).
Note! The cases are provided with openings, so you
can check what is the situation inside and replace the
desiccant if necessary. The covers, which close off
these openings, are marked: "Loosen screws. Pull out
board to replace desiccant bag" and "Danger if pink.
Replace desiccant bag".
If the indicator has turned red or damage to the
sealed wrapping should be noticed, remove the
contents and store them in a dry, well-ventilated
room. If necessary, heat the room with an electric
heater. If the above procedure cannot be adopted,
insert bags with new or reconditioned desiccant in the
wrapping. Patch the wrapping with tape or – if
possible – weld it.
still
fully
effective.
of
moist,
desiccant
no
longer
effective.
indicators
are
automatically
Sheet No.
3AAM101027 E
Rev. B
Page 2 of 3
Exceptions to the previous instructions
Wrappings for storage of limited duration have a
sufficient quantity of desiccant to last for the period in
question. These cases do not have any openings or
chemical indicators.
With shipments packed in cases without openings,
remove the lid of the case carefully and examine the
wrapping for punctures.
Special instructions for prolonged periods of
stopping after installation
If you are going to install the machines in their
operating locations but you are not going to
commission them until later, then the following
instructions for protection and maintenance are to be
observed, depending on the kind of machine and its
design. The Ex db machines are totally enclosed
(enclosure IP55) then neither foreign matter or
excessive moisture can enter into the machine.
Plain bearings
Apply a coating of TECTYL 502 C (supplier
VALVOLINE) or similar product to the bearing
journals, bearing shells, oil rings, and other bare
surfaces inside the bearing housings.
TECTYL 502 C is soluble in oil at approx. 50°C so it is
not necessary to remove it when you are preparing
the machine for operation.
Nevertheless, if abnormal heavy foaming of the
bearing lube oil during the test runs happens, this
indicates that the oil has been contaminated by the
TECTYL 502 C. In such case the oil must be changed
before final commissioning.
The shaft must not be turned during the conservation
period because the actual bearing surfaces will be dry
i.e. the weight of the rotor will have pressed the oil
film out from between the journal and the shell. A
certain amount of oil must be poured through the
opening in the top bearing cover onto the bearing
journal before putting the machine back into service;
consult the operating instructions for exact details.
Rolling contact bearings
No special measures are necessary for or during the
stopping period if less than 6 months; if the period is
more than 6 months refer to the instruction for storage
with reference to the shaft rotation. Fresh grease must
be injected into both bearings before putting the machine
back into service. Remove grease chamber cover and
inject fresh grease until the old grease has been
expelled.
Should a bearing need changing, consult the
equipment manual for instructions.
01.2023
Issued by: MOLM
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