Carrier AquaEdge 19XRV Installation Instructions Manual

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

Contents

11RIG MACHINE COMPONENTS — Refer to instructionsbelow to disassemble a chiller with an LF2 442A or 608AVFD or Standard Tier VFD (230, 335, 445, 485, 550, 605,680A). Special instructions for chillers with a 900A or 1200ALF2 VFD or Standard Tier VFD (765, 855, 960, 1070, 1275,1530A) are on pages 34-39.Disassemble a Chiller with a 442A or 608A LF2 VFD orStandard Tier VFD (230, 335, 445, 485, 550, 605, 680A) .Remove the VFD Enclosure — Confirm that the power supplydisconnect is open and all safety procedures are observedbefore removing the VFD. This procedure minimizes the num-ber of sensors and cables that need to be disconnected.1. Close the 2 filter drier isolation valves and the VFDrefrigerant drain isolation valve. Evacuate the VFD cold-plate through the Schrader valve next to the filter/drier.2. Remove any field wiring conduits that bring power to theVFD.3. Remove the terminal box transition piece.4. Label and disconnect the motor leads from the motor ter-minals. Note the position of the motor terminal cable lugsso they can be reinstalled with sufficient clearance awayfrom the surrounding structure.5. Remove the motor ground lead. Note the position of theground lead so it can be reinstalled with sufficient clear-ance away from the surrounding structure.6. Label and disconnect the power cables, interlock cable,and communication cable between the VFD enclosureand the power panel.7. Remove the access panels on the back of the VFD enclo-sure and disconnect the VFD cooling lines. Cover allopenings.Lifting the VFD — Care should be used to prevent damage dueto dropping or jolting when moving the VFD. A fork truck orsimilar means of lifting and transporting may be used. Slingthe VFD in a manner that will equalize the load at the pickupjoints. Use a spreader bar if the angle of the sling is less than45 degrees relative to horizontal. Do not jolt while lifting.Use the following procedure to lift the VFD:1. Attach a sling to the four lifting holes in the lifting brack-ets (lifting brackets are factory-installed on top of theVFD enclosure). Make certain that the angle of the slingis not less than 45 degrees relative to horizontal.2. Using an overhead or portable hoist (minimum 2 ton rat-ed capacity), attach a free-fall chain to the sling secured tothe drive. Take up any slack in the chain.3. Rig the control center and remove the bolts that secure itto the VFD mounting brackets on the condenser. SeeFig. 7.NOTE: To reassemble, follow steps in reverse order. Connectsensors and cables after major components have been securedto reduce the risk of damaging them.To Separate Cooler and CondenserNOTE: If the cooler and condenser vessels must be separated,the heat exchangers should be kept level by placing a supportplate under the tube sheets. The support plate will also help tokeep the vessels level and aligned when the vessels are boltedback together.Remove all transducer and sensor wires at the sensor. Clipall wire ties necessary to pull heat exchangers apart.1. Place a support plate under each tube sheet to keep eachvessel level (Fig. 8, Item 4).2. Cut the refrigerant motor cooling line at the locationshown (Fig. 8, Item 2).3. Disconnect the compressor discharge elbow at the com-pressor (Fig. 9, Item 6).4. Unbolt the cooler liquid feed line at the location shown(Fig. 8, Item 8).5. Cover all openings.IMPORTANT: Only a qualified service technician shouldperform this operation.WARNINGDo not attempt to disconnect flanges while the machine isunder pressure. Failure to relieve pressure can result in per-sonal injury or damage to the unit.CAUTIONBefore rigging the compressor, disconnect all wires enter-ing the power panel to avoid unit damage.WARNINGDo not attempt to remove the VFD without first closing therefrigerant isolation valves. Failure to do so during VFDremoval will result in an uncontrolled refrigerant leak. Arefrigerant leak can damage the unit as well as displaceoxygen, causing asphyxiation.CAUTION900A or 1200A LF2 VFD, Standard Tier VFD (765, 855,960, 1070, 1275, 1530A) — Do not separate the cooler andcondenser until the VFD is removed. The VFD/condenserassembly has a high center of gravity and may tip overwhen the cooler and condenser are separated, which couldresult in equipment damage and/or serious personal injury.See pages 34-39 for special instructions on VFD removalfor these sizes.45°MINIMUMFig. 7 — 442A and 608A LF2 VFDEnclosure Lifting Pointsa19-1699