Cormach MEC 10, Техническое руководство по обслуживанию

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Technical Support Manual – 05/2018 Rel. 2.1.3 Page 4
RPM

Shaft rotation speed test
This menu option allows you to run the shaft rotation speed test. When you access this option, the display shows the message
RPM
000
as shown in figures F2.4 and F2.5.
Figure F2.4: Shaft rotation speed test message Figure F2.5: Shaft rotation value message
To perform a realistic measurement, we recommend mounting a medium size wheel on the shaft.
Press the key [P8] or lower the wheel guard to rotate the wheel. Once the rotation is complete, the display shows the
rotation speed in RPM (revolutions per minute). You can repeat the rotation any time you wish.
The nominal rotation speed is indicated in annex 1.
If the rotation speed is considerably lower than that indicated, make sure that the main power voltage does not drop excessively
during rotation.
If the main power voltage is correct, check the tension of the belt.
If the tension of the belt is correct, check the motor and PWRB board.
NOTE: the rotation speed also depends on the main power supply frequency. The nominal rotation speed indicated in table T10.2
refers to a frequency of 50 Hz. If the frequency in that country is 60 Hz, the rotation speed will be 20% higher (provided that the motor
and pulley are the same).
To exit the rotation speed test, press [F+P9] .
SIG

Pick-up signals test
This menu option allows you to run the pick-up signals test. When you access this option, the display shows the message
SIG SIG
as shown in figures F2.6 and F2.7.
Figure F2.6: Pick-up signal test message Figure F2.7: Pick-up signal message
Use a well-balanced wheel weighing 50 grams outside to run this test. The dimensions of the wheel should be:
• Diameter: 15”
•
Width: 6”
If the dimensions of the wheel are different from those indicated, the pick-up signals detected will be different when compared to
those stated in table T10.2.
The pick-up signals depend on the diameter and width of the wheel (the greater the diameter, the higher the signal and the greater
the width, the higher the signal).
Press the key [P8] or lower the wheel guard to perform the launch. During rotation, the display shows a sequence of
three measurements performed at different attenuation levels. This sequence will be repeated until the wheel stops rotating, by
pressing [P10] or by lifting the wheel guard.