ICE MACHINES Q-Model Service Manual

Refrigeration System Section 7INSTALLATION/VISUAL INSPECTION CHECKLISTWATER SYSTEM CHECKLISTPossible ProblemIce machine is not levelImproper clearance aroundtop, sides and/or back of icemachineAir-cooled condenser filter isdirtyIce machine is not on anindependent electrical circuitWater filtration is plugged (ifused)Water drains are not runseparately and/or are notventedRemote condenser line set isimproperly installedCorrective ActionLevel the ice machineReinstall according to theInstallation ManualClean the condenser filterand/or condenserReinstall according to theInstallation ManualInstall a new water filterRun and vent drainsaccording to the InstallationManualReinstall according to theInstallation ManualA water-related problem often causes the samesymptoms as a refrigeration system componentmalfunction.Example: A water dump valve leaking during the freezecycle, a system low on charge, and a starving TXV havesimilar symptoms.Water system problems must be identified andeliminated prior to replacing refrigeration components.Possible ProblemWater area (evaporator) isdirtyWater inlet pressure notbetween 20 and 80 psiIncoming water temperatureis not between 35°F (1.7°C)and 90°F (32.2°C).Water filtration is plugged (ifused)Water dump valve leakingduring the freeze cycleVent tube is not installed onwater outlet drainHoses, fittings, etc., areleaking waterWater fill valve is stuck openWater is spraying out of thesump trough areaUneven water flow across theevaporatorWater is freezing behind theevaporatorPlastic extrusions andgaskets are not secured tothe evaporatorWater does not flow over theevaporator (not trickle)immediately after the prechillCorrective ActionClean as neededInstall a water regulator valveor increase the waterpressureIf too hot, check the hot waterline check valves in otherstore equipmentInstall a new water filterClean/replace dump valve asneededSee Installation InstructionsRepair/replace as neededClean/replace as neededStop the water sprayClean the ice machineCorrect the water flowRemount/replace as neededClean/replace water levelprobe as needed7-10 Part No. 80-1100-3