York model ycal chiller sensors3/14/2023 ![]() 56 REMOTE CURRENT/TEMPERATURE RESET PARTS BREAKDOWN. 50 CHILLER OPTIONS YCAL CHIILER OPTIONS - KITS. 48 WIRE HARNESS CONNECTORS - FIELD REPLACEMENT PART NUMBERS. 20 TRANSDUCERS, PRESSURE CUTOUTS AND TEMP SENSORS. ![]() 16 CONTROL AND POWER PANELS CONTROL PANEL AND POWER PANEL. 10 PIPING REFRIGERANT AND OIL PIPING COMPONENTS. UNIT NOMENCLATURE NAMEPLATE ENGINEERING DATA. Check if ambient air temperature is above operating limits.MILLENNIUM AIR-COOLED LIQUID CHILLERS HERMETIC SCROLL 60 HZRENEWAL RARTSSupercedes: 150.62-RP1 (1001) Form: 150.62-RP1 (202) Possible Cause: High compressor motor current has activated unloading.Īction: Check if liquid temperature is within operating limits. Problem: SYS # CURR LIMITING displayed (Compressor current unloading.) Check operation of economizer, TXV, and liquid solenoid valve. Check compressor discharge valve is open.Check for defective Motor Protector Module.Check main supply voltage is within tolerance. Check the compressor main supply voltage, fuses, contactors and wiring.Compressor motor protector signal failure.Check suction pressure transducer and wiring.Check for blocked fi lter / drier. Check LLSV is opening correctly.Check subcooling is correct. Check for leaks.Check for restricted chilled liquid flow. Check for fouled tube surfaces. Check superheat.Badly adjusted or faulty expansion valve.Check and change oil fi lter cartridge.Problem: SYS # HIGH OIL PRESS DIFF is displyed. Possible Cause: Discharge pressure unloading due to unit operating above load limit. See also SYS # HIGH DSCH.Īction: Check chilled liquid temperature is within range. Check fan operation. Check if ambient air temperature is above design conditions. Check programmed unload point. Problem: SYS # DSCH LIMITING displayed (Discharge pressure unloading) Check discharge sensor calibration, location and wiring.Check for airfl ow restrictions caused by blockages on intake faces of air coils.Check suction superheat is within range.Poor airfl ow through the condenser coils.Problem: SYS # HIGH DSCH TEMP displayed (High discharge temperature) Check for airfl ow restrictions caused by blockages on intake faces of air coils. Check for damaged fi ns/return bends. Check for correct fan operation and direction of rotation. Check for non-condensables (air) in system.Problem: SYS # HIGH DSCH displayed (High discharge pressure trip) Check for voltage dip on compressor start.Check main supply is stable and within allowable limits.Problem: Chiller FAULT: VAC UNDERVOLTAGE displayed. Check the voltage to the unloader valve solenoid. Check that the compressor unloads correctly.Check for restrictions in the liquid fl ow line. Check that the liquid fl ow is stable. ![]()
0 Comments
Leave a Reply.AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |