Carrier AquaEdge 19XR Series Start-up, Operation And Maintenance Instructions Manual

Also see for AquaEdge 19XR series: Installation instructions Start-up, operation and maintenance instructions

Contents

29Mechanical Starter1. Check all field wiring connections for tightness, clearancefrom moving parts, and correct connection.2. Check the contactor(s) to ensure they move freely. Checkthe mechanical interlock between contactors to ensure that1S and 2M contactors cannot be closed at the same time.Check all other electro-mechanical devises, such as relays,for free movement. If the devices do not move freely, con-tact the starter manufacturer for replacement components.3. Reapply starter control power (not main chiller power) tocheck the electrical functions.Ensure the starter (with relay 1CR closed) goes through acomplete and proper start cycle.Benshaw RediStart MX3™ Solid-State Starter1. Ensure all wiring connections are properly terminated tothe starter.2. Verify the ground wire to the starter is installed properlyand is sufficient size.3. Verify the motors are properly grounded to the starter.4. Verify the proper ac input voltage is brought into thestarter according to the certified drawings.5. Confirm the field wiring does not have external powersupply connected to the chiller controls/starter inputs.6. Apply power to the starter.VFD StarterUse the following instructions to verify the condition of theinstallation:1. Turn off, lockout, and tag the input power to the drive.2. Wait a minimum of 5 minutes for the DC bus to discharge.3. All wiring should be installed in conformance with theapplicable local, national, and international codes(e.g.,NEC/CEC).4. Remove any debris, such as metal shavings, from theenclosure. Metal shavings on power module enclosure willvoid drive warranty.5. Check that there is adequate clearance around themachine.6. Verify that the wiring to the terminal strip and the powerterminals is correct with no external power supplied to theinputs of the Carrier/starter controls.7. Verify that all of the VFD power module circuit board con-nectors are fully engaged and taped in place.8. Check that the wire size is within terminal specificationsand that the wires are tightened properly.9. Check that specified branch circuit protection is installedand correctly rated.10. Check that the incoming power is within 10% of chillernameplate voltage.11. Verify that a properly sized ground wire is installed and asuitable earth ground is used. Check for and eliminate anygrounds between the power leads. Verify that all groundleads are unbroken.Verify Condition of InstallationUse the following instructions to verify condition of installation:1. Turn off, lockout, and tag the input power to the drive.2. Wait a minimum of 5 minutes for the DC bus to discharge.3. All wiring should be installed in conformance with theapplicable local, national, and international codes(e.g.,NEC/CEC).4. Remove any debris, such as metal shavings, from theenclosure. Metal shavings on power module enclosure willvoid drive warranty.5. Check that there is adequate clearance around themachine.6. Verify that the wiring to the terminal strip and the powerterminals is correct.7. Verify that all of the VFD power module circuit board con-nectors are fully engaged and taped in place.8. Check that the wire size is within terminal specificationsand that the wires are tightened properly.9. Check that specified branch circuit protection is installedand correctly rated.10. Check that the incoming power is within 10% of chillernameplate voltage.11. Verify that a properly sized ground wire is installed and asuitable earth ground is used. Check for and eliminate anygrounds between the power leads. Verify that all groundleads are unbroken.Inspect Wiring1. Examine the wiring for conformance to the job wiring dia-grams and all applicable electrical codes.2. On low-voltage compressors (600 v or less) connect avoltmeter across the power wires to the compressor starterand measure the voltage. Compare this reading to the volt-age rating on the compressor and starter/VFD nameplates.3. Compare the ampere rating on the starter/VFD nameplateto rating on the compressor nameplate.4. The starter/VFD for a centrifugal compressor motor mustcontain the components and terminals required for PIC6refrigeration control. Check the certified drawings. Notethat the starter/VFD must share control of cooler and con-denser liquid pumps.5. Check the phase to phase and phase to ground line voltageto the starter/VFD, control panel (19XR6/7), power panel(19XR2-E) and optional pumpout compressor.6. Ensure that fused disconnects or circuit breakers havebeen supplied for all power leads to the chiller or associ-ated equipment.7. Ensure all electrical equipment and controls are properlygrounded in accordance with job drawings, certified draw-ings, and all applicable electrical codes.8. Ensure the customer’s contractor has verified proper oper-ation of the pumps, cooling tower fans, and associatedauxiliary equipment. This includes ensuring motors areWARNINGThe main disconnect on the starter/VFD front panel may notde-energize all internal circuits. Open all internal and remotedisconnects before servicing the starter/VFD. Failure to do socould result in serious personal injury or death from electricshock.WARNINGThis equipment is at line voltage when AC power is connect-ed. Pressing the STOP button does not remove voltage.CAUTIONAn isolation switch or circuit breaker must be open ahead ofany VFD or solid-state starter when the chiller is in a vacuum.If not, damage to the machine may result. WARNINGDo not check the voltage supply without proper equipmentand precautions. Serious injury may result. Follow powercompany recommendations.CAUTIONDo not apply any kind of test voltage, even for a rotationcheck, if the chiller is under a dehydration vacuum. Insulationbreakdown and serious damage may result.