ScanSpeed Mini - Device Test for Centrifuge; Validation of Actual RPM; Validation of Motor Performance

20
7.2 Device test for centrifuge
7.2.1 Validation of actual RPM
1) Prepare a RPM speed tachometer (hand
tachometer) and fluorescent light tape.
2) Attach some fluorescent light tape on a grip
of a rotor lid.
3) Set the specific rpm and start the operation.
4) Measure an actual rpm using the tachometer
through center window of main body lid.
5) Compare actual measurement rpm and setting
rpm.
7.2.2 Validation of Motor performance
Check the resistance value at motor output terminals (Unit: Ω)
Measuring method
1) Use ‘Multi meter tester’ tool
2) Place the tool at the resistance location
3) Check the resistance value at u-v, u-w, v-w with tester.
4) If the value is 0 or ∞ ohm, it means some trouble so it needs repairing.
5) The normal status is that 3 resistance values(u-v, v-w, w-u) are all same within a
range of ±5%.
Motor U V W
AC Induction 200watt Black Red White