Weir Warman 650 M200-MCR-G, Руководство пользователя, Страница: 120 / 287

TOROMOCHO PROJECT - WEG MOTORS
TAG´s :
210-PP-001-M 210-PP-003-M 210-PP-101-M
210-PP-002-M 210-PP-004-M
3.3 - START-UP
3.3.1 - PRELIMINARY INSPECTION
Before starting a motor for the first time, check the following:
a) Remove all locking devices and blocks used in transit and chek that the motor rotates freely;
b) Check if the motor is firmly secured and that coupling elements are correctly mounted and aligned;
c) Ascertain that voltage and frequency correspond to those indicated on the nameplate. Motor performance will be
satisfactory as long as voltage and frequency remain in the range determined by IEC Standard.
d) Check if connections are in accordance with the connection diagram shown on the nameplate and be sure that all
terminal screws and nuts are tight;
e) Check the motor for proper grounding. Providing that there are no specifications calling for ground-insulated
installation, the motor must be grounded in accordance with prevalent standard for grounding electrical machines. The
screw identified by the symbol ( ) should be used for this purpose. This screw is generally to be found in the terminal
box or on the motor foot.
f) Check if motor leads correspond with the main supply as well as the control wires, and the overload protection device
are in accordance with IEC Standards;
g) If the motor has been stored in a humid place, or has been stopped for some time, measure the insulating resistance
as recommended under the item covering storage instructions;
h) Start the motor uncoupled to ascertain that it is running freely and in the desired direction.
To reverse the rotation of a three-phase motor, invert two terminal leads of the main power supply.
Medium voltage motors having an arrow on the frame indicating rotation direction can only turn in the direction shown;
3.3.2 - THE FIRST START-UP
THREE-PHASE MOTOR WITH SQUIRREL
CAGE ROTOR
After careful checking of the motor, follow the normal sequence of starting operations listed in the control instructions for
the initial start-up.
3.3.3 - OPERATION
Drive the motor coupled to the load for a period of at least one hour while watching for abnormal noises or signs of
overheating. Compare the line current with the value shown on the nameplate. Under continuous running conditions
without load fluctuations, this should not exceed the rated current times the service factor, also shown on the
nameplate.
All measuring and control instruments and apparatus should be continuously checked for any deviation and any
irregularities corrected.
3.3.4 - STOPPING
Warning:
To touch any moving part of a running motor, even though disconnected, is a danger to life and limb. Three-phase
motor with squirrel cage rotor:
Open the stator circuits switch. With the motor at a complete stop, reset the auto-transformer, if any, to the “start”
position.
Notes:
- The ZZ bearings from 6201 to 6307 do not require relubrication as its life time is about 20,000 hours.
- Tables 9 and 10 are intended for the lubrication period under bearing temperature of 70°C (for beari ngs up to 6312
and NU 312) and temperature of 85°C (for bearings 6 314 and NU 314 and larger).
- For each 15°C of temperature rise, the relubricat ion period is reduced by half.
- The relubrication periods given above are for those cases applying Polyrex
®
EM grease.
Compatibility of Polyrex
®
EM grease with other types of grease:
Containing polyurea thickener and mineral oil, the Polyrex
®
EM grease is compatible with other types of grease that
contain:
- Lithium base or complex of lithium or polyurea and highly refined mineral oil.
- Inhibitor additive against corrosion, rust and anti-oxidant additive.
Notes:
- Although Polyrex
®
EM is compatible with types of grease given above, we do no recommended to mix it with any other
greases.
- If you intend to use a type of grease different than those recommended above , first contact WEG.
- On applications (with high or low temperatures, speed variation, etc), the type of grease and relubrification interval are
given on an additional nameplate attached to the motor.