Tabla de contenido
1. INTRODUCTION
The installation, operation and maintenance of the motor must be always performed by qualified
personnel using proper tools and methods and following the instructions contained in the documents
supplied with the motor.
The instructions presented in this document are valid for WEG motors with the following characteristics:
Three-phase and single-phase induction motors (squirrel cage rotor);
J
Three-phase permanent magnet motors;
J
Three-phase hybrid motors (squirrel cage rotor + permanent magnets);
J
The objective of this manual is to provide important information, which must be considered during the shipment,
storage, installation, operation and maintenance of WEG motors. Therefore, we advise to make a careful
and detailed study of the instructions contained herein before performing any procedures on the motor. The
noncompliance with the instructions informed in this manual and others mentioned on the website www.weg.net
voids the product warranty and may cause serious personal injuries and material damages.
Electric motors have energized circuits and exposed rotating parts which may cause injuries to people.
2. SHIPMENT, STORAGE AND HANDLING
Check the conditions of the motor immediately upon receipt. When any damage is noticed, this must be reported
in writing to the transportation company, and immediately communicated to the insurance company and to
WEG. In this case, no installation job can be started before the detected problem has been solved.
Check if the nameplate data matches the invoice data and the environmental conditions in which the motor will
be installed. If the motor is not immediately installed, it must be stored in a clean and dry room protected against
dust, vibrations, gases and corrosive agents, and with relative humidity not exceeding 60%.
In order to prevent water condensation within the motor during the storage period, it is recommended to
keep the space heater ON (where provided). In order to prevent oxidation of the bearings and ensure an even
distribution of the lubricant, rotate the motor shaft at least once a month (at least five turns), always leaving it
in a different position. For bearings with oil mist lubrication systems, the motor must be stored horizontally,
independently from the mounting configuration, with ISO VG 68 oil in the bearing, (the amount is indicated in
the motor manual available on the website www.weg.net) and the shaft must be turned weekly. If motors with
open bearings are stored longer than six months, the bearings must be relubricated with the amount of grease
indicated on the nameplate before the commissioning of the motor. If the motors are stored for more than two
years, it is recommended to change the bearings, or to remove, wash, inspect and relubricate them before the
motor is started. After this storage period, it is also recommended to change the start capacitors of single-phase
motors since they loss their operating characteristics.
Handle the motor always carefully in order to prevent impacts and damages to the bearings
and always install the shaft transportation/locking device (if supplied) when transporting the
motor.
Do not handle the motors by the polymeric components: fan cover, terminal box and / or
terminal box cover.
Use only the eyebolts to lift the motor. However these eyebolts are designed for the motor weight only.
Thus never use these eyebolts to lift the motor with additional loads coupled to it. The lifting eyebolts
of the terminal box, fan cover, etc., are intended to handle only these parts when disassembled from
the motor. For multimounting motors (with removable feet/base), the eyebolts must be positioned
according to the motor mounting position so that the lifting angle is vertically aligned (lifting at 0°).
Additional information regarding the maximum allowable angle-of-inclination is indicated in the
general manual available on the website www.weg.net.
Periodically and mainly before the initial star-up, measure the insulation resistance of the motor winding.
Check the recommended values and the measuring procedures in the website.
3. INSTALLATION
During the installation, the motors must be protected against accidental energization.
Check the motor direction of rotation, turning it without load before it is coupled to the load.
Remove the transportation devices and shaft locking device (if supplied) before starting the motor installation.
Motors must be only installed in places compatible with their mounting features and in applications and
environments for which they are intended.
Those motors with feet must be installed on bases duly planned in order to prevent vibrations and assure perfect
alignment. The motor shaft must be properly aligned with the shaft of the driven machine. Incorrect alignment, as
4 | Low and High Voltage Electric Motors
ENGLISH
Tabla de contenido
