Carrier 19DV Series Installation, Operation And Maintenance Instructions

Also see for AquaEdge 19DV series: Start-up, operation and maintenance instructions Start-up, operation and maintenance instructions Installation instructions Controls operation and troubleshooting Operation and Troubleshooting

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Carrier 19DV Series Installation, Operation And Maintenance Instructions Manual pdf 105 page image

1054- Reconnect the pressure switch.Switch off the power supply by acting on the QF1 circuit breaker.Wait at least 5 secondsPut the power supply back on the circuit breaker QF1.Reset the safety relay by pressing the reset button.Na5- Check that the PWR, IN and OUT LED of the safety relay K4 is on.Check that the contactor tap K101 is depressed.Test n°2 :Steps : OK NOK1- Machine under tension with K101 closed.2- Disconnect the NC contact signal from the K101 from the S-33 terminal of the TBSterminal block Na3- Disconnect an active pressure switch by opening its disconnect terminal on TBS mainterminal (SP1FA = S-11 ; SP1FB= S-12 ; SP2FA = S-21 ; SP2FB = S-22). Na4- Check that the OUT LED of the safety relay K4 is off.5- Check that the contactor tap K101 is not depressed.6- Close the disconnect terminal of the pressure switch wiringSwitch off the power supply by acting on the QF1 circuit breaker.Wait at least 5 secondsPut the power supply back on the circuit breaker QF1.Reset the safety relay by pressing the reset button.Na7- Check that the OUT LED of the safety relay K4 is still off.8- Check that the K101 contactor tap is still not depressed.9- Reconnect the NC contact Na10- Reset the safety relay by pressing the reset button. Na11- Check that the PWR, IN and OUT LED of the safety relay K4 is on.Check that the contactor tap K101 is depressedTable 21 – Safety chain check9.3.11 – Compressor bearing maintenanceThe key to good bearing maintenance is proper lubrication. Inspect the lubrication system regularly andthoroughly. Annual vibration measurements are recommended to monitor overall compressor status. Annualrefrigerant analysis is recommended to monitor refrigerant acid and moisture levels over time.Excessive bearing wear can sometimes be detected through increased vibration or increased bearingtemperature. To inspect the bearings, a complete compressor teardown is required.Only a trained service technician should perform a compressor disassembly. Bearings cannot be field inspected;excessive vibration is the primary sign of wear or damage. If either symptom appears, contact an experienced andresponsible service organization for assistance.Annual compressor vibration analysis and trending is recommended for compressor preventative monitoring andmaintenance.CAUTION: If compressor requires disassembly, cleanliness is of critical importance to avoid contamination. Smallamounts of contamination can result in damage to ceramic bearings.