Starting - S&P CXRT Serie Instrucciones De Montaje Y Mantenimiento

Installation instructions
connected to ducting that conforms to the designed
pressure drop. This will prevent overloading of the
motor. Check that the belt guard and inlet guard are
fitted in accordance with regulations. If the fan is
intended for Y/D starting, check that the time relay has
been set for the calculated Y position starting time.

3.8 Starting

Briefly switch on the motor power supply to check
whether the fan impeller rotates in the correct direction.
Check that no abnormal mechanical sounds or surging
occurs. Check that the level of vibrations transmitted to
the bearings is normal. If required, measure the
vibrations emanating from the fan and from the motor
bearings with a vibrometer. The strength of vibrations
must not exceed an RMS value of 7.1 mm/s. If the fan is
mounted on vibration dampers, check that they can
operate correctly without stretching the flexible
connection duct or electric cable. After running for 30
minutes, the belt tension must be checked and, if
required, adjusted. Check the temperature and running
noise of the plummer block bearings. If necessary,
ensure that there is grease in the bearings.
Fig. 3.3 The correct direction of rotation for an
LF impeller.
Fig. 3.4 The correct direction of rotation of LB and
HB impeller.
CXRT , GT
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