INTRODUCTION
APPLICATION
DESIGN AND OPERATION
MARKING AND
PACKING
OPERATING INSTRUCTIONS
General
Safety Precautions
Condition Checks
Preparation For Operation
Installation And Wiring
Trobleshooting

OPERATING INSTRUCTIONS

INSTALLATION AND WIRING
When mounting the motor see to it that cooling air is easily admitted to and exhausted from the fan housing. Bear in mind that the fan housing must be spaced at least 20 mm from the nearest wall. The motor may be coupled to the driven mechanism through an elastic coupling, a belt or V - belt transmission. When coupling the motor to the driven mechanism through an elastic coupling do not fail to accurately align the shafts. Bear in mind that misalignment of the shafts will cause additional thrust on the bearings, excessive vibration, and premature failure of the motor. Tolerated misalignment depends on the type of the coupling and must not exceed the specified value. When a motor has two shaft extensions, one of them must be coupled through an elastic coupling only and the total thrust must not exceed that rated for the given type of motor. Motors with a belt transmission must be mounted on tension skids or provided with a tensioning pulley that functions to compensate for the belt tensioning in service. In the above case make sure that the mounting skids are normal to the motor centre line. The motor centre line must be normal to the belts direction. Do not use stitched belts. Tension the belts so that their slippage is eliminated; however, you must remember that excessive tensioning of the belt will cause premature wear of the belt and the bearing. Irrespective of the type of rotary motion transmission do not fail to balance out all the parts mounted on the shaft extension, such as pulley, coupling, gears, etc. in doing so remember that the rotor has been balanced without a key. To prevent damage to the bearings shrink the transmission elements onto the shaft while heated to a temperature of 393 to 403 K (+120° to +130° C) and during the procedure provide a support for the opposite end of the shaft. Having installed the motor check the stator winding leads for correct connection to supply mains against the wiring diagram attached to the terminal box cover (for connecting the motor to supply mains refer to Fig.11). Make sure that the fastening and contact joints are in good condition, the motor is reliably connected to ground, the rotor turns easily by hand, the supply voltage complies with nameplate data. Start the motor at no load to check its mechanical elements for knocking noise, vibration, etc. and the shaft for correct sense of rotation.To reverse the motor, interchange any to phase leads on the terminal board. Upon starting the motor at no load and eliminating troubles detected start the motor again, this time under load.