York Mr. Slim PK-1.6FLA Technical & Service Manual

Contents

York Mr. Slim PK-1.6FLA Technical & Service Manual Manual pdf 12 page image

Installation InstructionsCOMMISIONING OF ELECTRICAL WIRES & POWER CABLESBefore installing or servicing unit, turn off main power to system. There may be more than one disconnect / isolatorswitch Turn off accessory heater power if applicable. Electric shock can cause personal injury.Unit safety devicesInternal current and temperature sensitive over load - This Device resets automatically when internal compressor motortemperature drops to a safe level. When an internal overload is suspected of being open, check by using an ohmmeter orcontinuity tester.Refrigerant chargingUnit refrigerant system is factory charged. When recharging is necessary, Weigh the total charge indicated on unitnameplate. Remove any refrigerant remaining in system before recharging. If system has lost complete charge, evacuatesystem to 0.72 kPa (5000 microns, 29.7 -in. Hg Vacuum) before recharging are available at refrigeration supply firms.Note: If oil need to be changed or added, only mineral oil for R22 and polyol Erter oil for R407C be changed.Removal of compressorFirst wear safety glasses and work gloves. Shut off power to unit & remove compressor access panel to exposeCompressor. Remove refrigerant from unit using approved refrigerant removal methods. Remove core from suction anddischarge line Schrader fittings (Pin valve). Disconnect compressor wiring at compressor terminal box. Use tube cutterto cut suction and discharge lines at convenient place near compressor for easy reassemble to new compressor withcopper slip Couplings (if provided). Remove accessory crankcase heater (if used) from compressor base. Removecompressor hold down bolts and lift compressor out. Carefully un braze suction & discharge line piping or stubs fromcompressor. If oil vapor in piping/stubs ignites, use quenching cloth to extinguish. Muffler & Liquid receiver maycontain quantity of oil. So be careful while removing. Install a new compressor in unit. Braze suction and discharge linesto compressor suction & discharge pipes. Ensure compressor hold down bolts are in place & then Connect wiring.Reinstall accessory crankcase heater (if used) on compressor base. Clean system. Add new suction and liquid line filterdrier. If burnout is severe, then new filter drier must be replaced after a few hours of operation. Flush the system withhigh pressure Nitrogen to clean the system & avoid any moisture in system. Triple-evacuate and recharge unit.Condensate drainClean condensate drain trap with help of bottle brush then flush the condensate pan with clean water. Ensure that thewater should drain freely.Evaporator blower assemblyBlower wheel should be centered in blower housing as shown in fig-17 & 18.To adjust or remove follow the below steps:BlowerHousingOrificeMotor MountBracketMotorBlowerHousingBlowerWheelBlower PullyMotor PullyMotorBeltOrificeFig. - 17 Fig. - 18COMMERCIAL DUCTED SPLITS14