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580J*04--12
NOMINAL3TO10TONS
WITHPURONr(R410A)REFRIGERANT
ServiceandMaintenanceInstructions
Follow all safety codes. Wear safety glasses and work
TABLEOFCONTENTS
gloves. Use quenching cloth for unbrazing operations.
SAFETY CONSIDERATIONS .................... 1 Have fire extinguishers available for all brazing
operations.
UNIT ARRANGEMENT AND ACCESS ........... 2
SUPPLY FAN (BLOWER) SECTION .............. 4 Follow all safety codes. Wear safety glasses and work
gloves. Use quenching cloth for braz
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FILTER ACCESS PANEL ! WARNING ELECTRICALOPERATIONHAZARD Failure to follow this warning could result in personal injuryordeath. Before performing service or maintenance operations on unit, turn off main power switch to unit. Electrical shockandrotatingequipment couldcause injury. COMPRESSOR ACCESS PANEL (04-07 only) OUTDOOR-AIR OPENING AND INDOOR COIL ACCESS PANEL ! WARNING C08449 Fig. 1 -- Typical AccessPanel Locations ELECTRICALOPERATIONHAZARD Failure to follow this warning could result in pers
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S Wire terminal tightness washing with hot low--pressure water and soft detergent and replace all screens before restarting the unit. Observe S Refrigerant charge level the flow direction arrows on the side of each filter frame. S Evaporatorcoil cleaning EconomizerInletAirScreen S Evaporatorblowermotoramperage This air screen is retained by spring clips under the top Heating edge of the hood. (See Fig. 3.) S Heat exchangerflue passagewayscleanliness 17 1/4” S Gasburnercondition S Gasmanifoldpres
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Re--install by placing the frame in its track, rotating the new belt, do not use a tool (screwdriveror pry--bar)to retainer back down and tighten all screws. force the belt over the pulley flanges, this will stress the belt and cause a reduction in belt life. 2. Loosen the motor mounting plate front bolts and rear SUPPLYFAN(BLOWER)SECTION bolts. 3. Push the motor and its mounting plate towards the ! WARNING blower housing as close as possible to reduce the cen- ter distance between fan shaft and
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Before changing pulleys to increase fan wheel speed, check the fan performance at the target speed and airflow rate to determine new motor loading (bhp). Use the fan performance tables or use the Packaged Rooftop Builder software program. Confirm that the motor in this unit is capable of operating at the new operating condition. Fan shaft loading increases dramatically as wheel speed is increased. To reduce vibration, replace the motor’s adjustable pitch pulley with a fixed pitch pulley (after t
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difficult. Surface loaded fibers must be completely 6. Use a water hose or other suitable equipment to flush removed prior to using low velocity clean water rinse. down between the 2 coil sections to remove dirt and debris. Clean the outer surfaces with a stiff brush in PeriodicCleanWater Rinse the normal manner. A periodic clean water rinse is very beneficial for coils 7. Secure inner and outer coil rows together with a that are applied in coastal or industrial environments. field--supplied fas
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11. Thoroughly rinse all surfaces with low velocity clean ! CAUTION water using downward rinsing motion of water spray nozzle. Protect fins from damage from the spray UNIT DAMAGE HAZARD nozzle. Failure tofollowthiscautionmayresult inaccelerated EvaporatorCoil corrosion of unit parts. CleaningtheEvaporator Coil Harsh chemicals, household bleach or acid or basic 1. Turn unit power off. Install lockout tag. Remove cleaners should not be used to clean outdoor or indoor evaporator coil access panel.
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SEAT CORE (Part No. EC39EZ067) 1/2-20 UNF RH 0.596 o 45 o 30 WASHER DEPRESSOR PER ARI 720 O-RING +.01/-.035 1/2" HEX .47 FROM FACE OF BODY 5/8” HEX 7/16-20 UNF RH This surface provides a metal to metal seal when torqued into the seat. Appropriate handling is required to not scratch or dent the surface. C08453 Fig. 11 -- CoreMax AccessPort Assembly required. Connect the pressure gauge to the service port PURONR(R410A)REFRIGERANT on the suction line. Mount the temperature sensing device o
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COOLINGCHARGINGCHARTS C08203 C08204 Fig. 12 -- Cooling Charging Charts 9 580J
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COOLINGCHARGINGCHARTS(cont) C08228 C08229 Fig. 12 -- CoolingChargingCharts(cont.) 10 580J
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COOLINGCHARGINGCHARTS(cont.) C08437 C08438 Fig. 12 -- CoolingChargingCharts(cont.) 11 580J
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COOLINGCHARGINGCHARTS(cont.) C08439 Fig. 12 -- CoolingChargingCharts(cont.) 12 580J
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The suction and discharge pressure levels should now Compressor move to their normal start--up levels. Lubrication NOTE: When the compressor is rotating in the wrong The compressor is charged with the correct amount of oil direction, the unit makes an elevated level of noise and at the factory. does not provide cooling. FilterDrier ! CAUTION Replace whenever refrigerant system is exposed to atmosphere. Only use factory specified liquid--line filter UNIT DAMAGE HAZARD driers with working pressure
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Table1–CoolingServiceAnalysis PROBLEM CAUSE REMEDY Power failure. Callpowercompany. Fuseblownorcircuitbreakertripped. Replacefuseorresetcircuitbreaker. Defectivethermostat,contactor,transformer, Replacecomponent. CompressorandCondenser orcontrolrelay. Fan WillNotStart. Insufficientlinevoltage. Determinecauseand correct. Incorrectorfaulty wiring. Checkwiring diagramand rewirecorrectly. Thermostatsetting toohigh. Lowerthermostatsetting belowroomtemperature. Faultywiring orlooseconnectionsincompres
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when the unit disconnect or HACR switch is open. See CONVENIENCEOUTLETS Fig. 15. ! WARNING ELECTRICALOPERATIONHAZARD Failure to follow this warning could result in personal injuryordeath. Units with convenience outlet circuits may use multiple disconnects. Check convenience outlet for power status before opening unit for service. Locate its disconnect switch, if appropriate, and open it. Tag--out thisswitch, ifnecessary. Two types of convenience outlets are offered on 580J models: Non--powered a
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Sensor SMOKEDETECTORS The sensor (see Fig. 17) includes a plastic housing, a Smoke detectors are available as factory--installed options printed circuit board, a clear plastic cover, a sampling on 580J models. Smoke detectors may be specified for tube inlet and an exhaust tube. The sampling tube (when Supply Air only or for Return Air without or with used) and exhaust tube are attached during installation. economizer or in combination of Supply Air and Return The sampling tube varies in length d
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such as smoke from a fire, causes the sensor to signal an Return Air with Economizer — The sampling tube is alarm state but dust and debris accumulated over time inserted through the side plates of the economizer does not. housing, placing it across the return air opening on the unit basepan. See Fig. 20. The holes in the sampling tube For installations using two sensors, the duct smoke face downward, into the return air stream. The sampling detector does not differentiate which sensor signals a
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tion of the flexible tubing to the sampling tube is the condition is detected. See Fig. 23, Smoke Detector same. Wiring. Highlight A: JMP 3 is factory--cut, transferring unit control to smoke detector. Highlight B: Smoke detector NC contact set will open on smoke alarm condition, de--energizing the ORN conductor. Highlight C: 24--v power signal via ORN lead is removed at Smoke Detector input on LCTB; all unit operations cease immediately. Using Remote Logic: Five conductors are provided for fiel
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SENSORANDCONTROLLERTESTS ! CAUTION SensorAlarmTest OPERATIONAL TEST HAZARD The sensoralarm test checks a sensor’s abilityto signal an Failure to follow this caution may result in personnel alarm state. Thistest requiresthat you use a fieldprovided and authority concern. SD--MAG test magnet. Pressing the controller’s test/reset switch for longer ! than seven seconds will put the duct detector into the CAUTION alarm state andactivate all automatic alarm responses. OPERATIONAL TEST HAZARD DirtyCont
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ChangingtheDirtSensorTest 12 By default, sensor dirty test results are indicated by: Smoke Detector Controller 1 S The sensor’sDirtyLEDflashing. TB3 S The controller’sTrouble LEDflashing. − 1 Auxiliary equipment S The controller’ssupervisionrelaycontactstoggle. + 2 The operation of a sensor’s dirty test can be changed so 3 14 that the controller’s supervision relay is not used to SD-TRK4 indicate test results. When two detectors are connected to Supervision relay contacts [3] a controller, sens
