Carrier 19XRV Start-up, Operation And Maintenance Instructions Manual

Also see for AquaEdge 19XRV series: Start-up and service instructions Installation instructions Start-up, operation and maintenance instructions Start-up and service instructions User manual

Carrier 19XRV Start-up, Operation And Maintenance Instructions Manual Manual pdf 68 page image

CORRECT MOTOR ROTATIONIS CLOCKWISE WHEN VIEWEDTHROUGH MOTOR SIGHT GLASSTO CHECK ROTATION, ENERGIZE COMPRESSOR MOTOR MOMENTARILY.DO NOT LET MACHINE DEVELOP CONDENSER PRESSURE.CHECK ROTATION IMMEDIATELY.ALLOWING CONDENSER PRESSURE TO BUILD OR CHECKINGROTATION WHILE MACHINE COASTS DOWN MAY GIVE A FALSEINDICATION DUE TO GAS PRESSURE EQUALIZING THROUGH COMPRESSOR.Fig. 37 -- Correct Motor RotationCheck Chiller Operating Condition -- Clleck to besure that chiller temperatures, pressures, water flows, find oil findlefiigemnt levels indicate the system is functioning properly.Instruct the Customer Operator -- Ensure the op-erator(s) understand all operating and maintenance procedures.Point out the various chiller parts and explain their function aspa-t of file complete system.COOLER-CONDENSER--Float chamber, relief valves,refrigerant charging valve, temperatme sensor locations, pres-sure transducer locations, Schmder fittings, waterboxes andtubes, and vents find drains.OPTIONAL PUMPOUT STORAGE TANK AND PUMP-OUT SYSTEM -- Transfer vfdves find pumpout system,refrigerant charging and pumpdown procedme, find reliefdevices.MOTOR COMPRESSOR ASSEMBLY -- Guide vane actu-ator: transmission, motor cooling system, oil cooling system,temperature and pressure sensors, oil sight glasses, integral oilpump, isolatable oil Iiltel; extra oil and motor temperaturesensol_, synthetic oil, find compressor serviceability.MOTOR COMPRESSOR LUBRICATION SYSTEM --Oil pump, cooler filter, oil heatel: oil charge and specification,operating and shutdown oil level, temperature and pressure,and oil charging connections.CONTROL SYSTEM--CCN and LOCAL start, reset,menu, softkey functions, ICVC operation, occupancy schedule,set points, safety controls, find auxiliay and optiomd controls.AUXILIARY EQUIPMENT-- Disconnects, sepmate elec-trical sources, pumps, and cooling towel:DESCRIBE CHILLER CYCLES -- Refi'igerant, motor cool-ing, lubrication, and oil reclaim.REVIEW MAINTENANCE- Scheduled, routine, and ex-tended shutdowns, importance of a log sheet, importance ofwater treatment and tube cleaning, and importance of maintain-ing a leak-free chillerSAFETY DEVICES AND PROCEDURES -- Electrical dis-connects, relief device inspection, and handling refrigerant.CHECK OPERATOR KNOWLEDGE-- Stm-t, stop, andshutdown procedures, safety and operating controls, refrigerantand oil charging, and job safety.REVIEW THE START-UP OPERATION, AND MAINTE-NANCE MANUAL.NOTE: Manufds find notebooks should not be stored under theVFD power module as they will block airflow into the powermodule cooling fan. Remove the manuals if they were placedunder the power module during shipping.OPERATING INSTRUCTIONSOperator DutiesI. Becolne falniliar with the chiller and related equiplnentbefore operating the cNllel:2. Prepare the system for start-up, start and stop the chiller.and place the system in a shutdown condition.3. Maintain a log of operating conditions and document anyabnormal readings.4. Inspect the equipment, make routine adjustments, fredperform a Control Test. Maintain the proper oil andrefrigerant levels.5. Protect the system from &image during shutdown periods.6. Maintain the set point, time schedules, and other PIC HIfunctions.Prepare the Chiller for Start-Up -- Follow the stepsdescribed in the Initial Start-Up section, page 67.To Start the ChillerI. Start the water pumps, if they are not automatic.2. On the ICVC default screen, press the _ or[_ soflkey to start the system. If the chiller is in theOCCUPIED mode find the start timel_ have expired, thestfu-t sequence will start. Follow the procedure describedin the Start-Up/Shutdown/Recycle Sequence section,page 50.Check the Running System -- After the compres-sor starts, the operator should monitor the ICVC display findobserve the parameters for normal operating conditions:1. The oil reselaToir temperature should be above 120 F(49 C) during shutdown.2. The bearing oil temperature accessed on the COMPRESStable should be 120 to 165 F (49 to 74 C) for compressorsusing journal bemings, and up to 175 F (79 C) for Frame3 compressors equipped with rolling element bemings. Ifthe bearing temperatme reads more than 180 F (83 C)wifll the oil pump running, stop the chiller and determinethe cause of the high temperature. Do not restart thechiller until corrected.3. The oil level should be visible anywhere in one of the twosight glasses. Foaming oil is acceptable as long as the oilpressure and temperature are within limits.4. The OIL PRESSURE should be between 18 and 30 psid(124 to 207 kPad) differential, as seen on the ICVCdefault screen. Typically the reading will be 18 to 25 psid(124 to 172 kPad) at initial start-up. Typical values maybe up to 10 psid (69 kPad) higher for Frame 3 compres-sors equipped with rolling element bearings.5. The moisture indicator sign glass on the refrigerantmotor cooling line should indicate refrigerant flow and adry condition.6. The condenser pressure and temperature varies with thechiller design conditions. Typically the pressure willrange between 60 and 135 psig (390 to 950 kPa) with acorresponding temperature range of 60 to 105 F (15 to41 C). The condenser entering water temperature shouldbe controlled below the specified design enteringwater temperature to save on compressor kilowattrequirements.7. Cooler pressure and temperature also will vary with thedesign conditions. Typical pressure range will be between60 and 80 psig (410 and 550 kPa), with temperatureranging between 34 find 45 F (1 and 8 C).68