EMK Operating and maintenance guidelines 7
Motive
In many cases, low-voltage motors are stored for lon-
ger periods of time before assembly and commissio-
ning, sometimes for several years.
In order to prevent premature damage, our customers
must be informed about this topic and, if necessary,
also about the following measures:
» Storage
When storing the motors, the supplied operating inst-
ructions must always be followed:
»Storage room
The motors must be stored in a dry, ventilated, dust-
free, and vibration-free room. Further, the storage
temperature should not be below -15°C (according to
EN60034-1) and the relative humidity should be below
60%.
If this is guaranteed, no special protective packaging
is required.
In all other cases, special packaging with plastic bags
and humidity indicators and a regular inspection will
be necessary.
»Anti-rust
All exposed, outer components (e.g. shaft end, flanges,
feet) have a protective coating for 6 months storage
under dry conditions.
In order to secure a longer storage period, all accessib-
le bare parts must be provided with a long-term corro-
sion protection coating (e.g. Tectyl 506), provided this
has not already been applied by the factory.
Measures
» For prolonged storage and before commissioning of low-voltage motors
EA regular inspection of the corrosion coating and, if
necessary, a renewal is necessary.
»Rotor holding device
The rotor holding device serves as a protection of the
bearings during transport and / or in the case of non-
vibration-free mounting (danger of brinelling). If a
rotor retaining device has been mounted on the drive
end of the shaft (DE shaft end) by the factory (e.g. for
designs with roller bearings), this must not be remo-
ved.
If the disassembly of the rotor retaining device is un-
avoidable (e.g. during inspections, tests, etc.), it must
be reattached before dispatch or during further sto-
rage.This also applies in particular to motors in which
a coupling half must be mounted on the DE shaft end.
The coupling half must be removed again after the ad-
justment, the rotor holding device must be reassem-
bled and the coupling half must be supplied or stored
separately.
»Condensation water
If condensation drain holes are present on the motor,
any condensation water must be drained off by remo-
ving the plugs.
Commissioning
The operating instructions of the EMK motor as well
as the safety information „Warnings“ which are sup-
plied with each motor or can be downloaded from the
Internet must be observed entirely.
»Bearings / Lubrication
The rolling bearings must be relubricated if the time
between delivery and commissioning is more than 2
years.
