Chapter 6 – Maintenance
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13841 Rev A
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6. Connect the Calibrator to a regulated 28 Vdc power
supply.
NOTE: A 28 volt battery is sufficient.
7. Connect the Strobex (if applicable) to the Balancer using
the 12979 tracking cable and to the power supply.
8. Turn the Calibrator switch to “ON”.
9. Turn speed selection to 900 RPM.
10. Using a florescent light, adjust the speed of the calibrator
to give a stopped (but slight blurred) view of the
pertinent strobe disc. See Calibrator manual for details
on tuning speed of the Calibrator.
11. Turn Balancer ON.
12. After Power Up self test, press TRACK & BALANCE.
13. Select channel 1 and A press START.
1. 14. Reading should be.4 IPS +/-.04 IPS and 9:00 o’clock
+/- 1 hour and RPM should read 900 +/- 5 RPM.
14. Turn calibrator speed selection to 1800 RPM. Adjust
speed according to Step 10.
15. Press REDO Measurement (Context Key).
2. 17. Readings should be.8 IPS +/-.08 IPS at 9:00 o’clock,
+/- 1 hour and RPM should read 1800 +/-10 RPM.
3. 18. Perform the same tests using channel 2 and B.
4. 19. Press GO back and initiate a Strobe Track.
5. 20. Press spread factor OFF and number of blades to 1.
6. 21. Two images of the C-H logo should be in evidence
on strobe disc of calibrator.
7. 22. Change number blades to two (2).
8. 23. Observe 4 stems on C-H logo of calibrator strobe
disc.
9. 24. If these readings are observed, the unit is serviceable.
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