Carrier Performance 50VR-A Installation Instructions Manual

Also see for Performance 50VR-A: Installation instructions

32MAINTENANCETo ensure continuing high performance, and to minimize thepossibility of premature equipment failure, periodic maintenancemust be performed on this equipment. This cooling unit should beinspected at least once each year by a qualified service person. Totroubleshoot unit, refer to Table 12, Troubleshooting Chart.NOTE TO EQUIPMENT OWNER: Consult your local dealerabout the availability of a maintenance contract.PERSONAL INJURY AND UNIT DAMAGEHAZARDFailure to follow this warning could result in personalinjury or death and possible unit component damage.The ability to properly perform maintenance on thisequipment requires certain expertise, mechanical skills,tools and equipment. If you do not possess these, do notattempt to perform any maintenance on this equipment,other than those procedures recommended in the Owner’sManual.! WARNINGELECTRICAL SHOCK AND FIRE HAZARDFailure to follow these warnings could result in personalinjury or death:1. Turn off electrical power to the unit and install lockouttag before performing any maintenance or service on thisunit.2. Use extreme caution when removing panels and parts.3. Never place anything combustible either on or in contactwith the unit.! WARNINGUNIT OPERATION HAZARDFailure to follow this caution may result in equipmentdamage or improper operation.Errors made when reconnecting wires may cause improperand dangerous operation. Label all wires prior todisconnecting when servicing.CAUTION!The minimum maintenance requirements for this equipment are asfollows:1. Inspect air filter(s) each month. Clean or replace whennecessary.2. Inspect indoor coil, drain pan, and condensate drain eachcooling season for cleanliness. Clean when necessary.3. Inspect blower motor and wheel for cleanliness eachcooling season. Clean when necessary.4. Check electrical connections for tightness and controls forproper operation each cooling season. Service whennecessary.5. Ensure electric wires are not in contact with refrigeranttubing or sharp metal edges.Air FilterIMPORTANT: Never operate the unit without a suitable air filterin the return--air duct system. Always replace the filter with thesame dimensional size and type as originally installed. See Table 1for recommended filter sizes.Inspect air filter(s) at least once each month and replace(throwaway--type) or clean (cleanable--type) at least twice duringeach cooling season and twice during the heating season, orwhenever the filter becomes clogged with dust and lint.Indoor Blower and MotorNOTE: All motors are pre--lubricated. Do not attempt to lubricatethese motors.For longer life, operating economy, and continuing efficiency,clean accumulated dirt and grease from the blower wheel andmotor annually.ELECTRICAL SHOCK HAZARDFailure to follow this warning could result in personalinjury or death.Disconnect and tag electrical power to the unit beforecleaning the blower motor and wheel.! WARNINGTo clean the blower motor and wheel:1. Remove and disassemble blower assembly as follows:a. Remove blower access panel (see Fig. 21).b. Disconnect 5 pin plug and 4 pin plug from indoorblower motor. Remove capacitor if required.c. On all units remove blower assembly from unit.Remove screws securing blower to blower partition andslide assembly out. Be careful not to tear insulation inblower compartment.d. Ensure proper reassembly by marking blower wheel andmotor in relation to blower housing before disassembly.e. Loosen setscrew(s) that secures wheel to motor shaft,remove screws that secure motor mount brackets tohousing, and slide motor and motor mount out ofhousing.2. Remove and clean blower wheel as follows:a. Ensure proper reassembly by marking wheel orientation.b. Lift wheel from housing. When handling and/orcleaning blower wheel, be sure not to disturb balanceweights (clips) on blower wheel vanes.c. Remove caked--on dirt from wheel and housing with abrush. Remove lint and/or dirt accumulations fromwheel and housing with vacuum cleaner, using softbrush attachment. Remove grease and oil with mildsolvent.d. Reassemble wheel into housing.e. Reassemble motor into housing. Be sure setscrews aretightened on motor shaft flats and not on round part ofshaft. Reinstall blower into unit.f. Connect 5 pin plug and 4 pin plug to indoor blowermotor. Reinstall capacitor if required.g. Reinstall blower access panel (see Fig. 21).3. Restore electrical power to unit. Start unit and check forproper blower rotation and motor speeds during coolingcycles.50VR