WEGeuro - Indústria Eléctrica, S.A. Português - English
38
between 5 ºC and 40 ºC, without sudden temperature changes, free of dust,
vibrations, gases or corrosive agents. The motor must be stored in horizontal position,
unless specifically designed for vertical operation, without placing objects on it.
4.6 All exposed machined surfaces (like shaft end and flange) are factory-protected with
temporary rust inhibitor (ANTICORIT BW 366 from FUCHS or equivalent). A protective
film must be reapplied periodically (at least every six months), or when it has been
removed and/or damaged.
4.7 Flameproof joints are protected with a corrosion inhibiting grease that does not harden
because of ageing and doesn’t contain an evaporating solvent (MOBIL Polyrex EM,
Lumomoly PT/4, Molykote 33 or other equivalent recommended by WEG). These
surfaces shall be periodically checked and a protective film must be periodically
reapplied, mainly on terminal box joints if they already have been opened.
4.8 For long storage periods is recommended that the rotor shaft shall be turned
periodically to prevent bearings deterioration.
4.9 If the motor is equipped with sleeve bearings it must be stored in its original operating
position and with oil in the bearings. Correct oil level must be ensured. It shall be in the
middle of the sight glass. During the storage period, remove the shaft locking device
and rotate the shaft by hand every month, at least 5 revolutions (and at 30 rpm), thus
achieving an even oil distribution inside the bearing and maintaining the bearing in
good operating conditions. Reinstall the shaft locking device every time the motor
needs to be moved. If the motor is stored for a period of over six months, the bearings
must be relubricated before starting the operation. If the motor is stored for a period
longer than the oil change interval, or if it is not possible to rotate the motor shaft by
hand, the oil must be drained and a corrosion protection and dehumidifiers must be
applied.
4.10 If motors are fitted with anti-condensation heaters, these shall be connected during
storage.
4.11 It is recommended that the winding insulation resistance shall be periodically
measured (see values in 6.1) at regular intervals to follow-up and evaluate its electrical
operating conditions. If any reduction in the insulation resistance values is recorded,
To Next Page
Loading...
