SterlingTEK A0551797 manual Evaporator Maintenance, Pump Motor Seal, Makeup Valve

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9-3 Evaporator Maintenance

The evaporator(s) may be accessed for back-flushing by removal of the 2” plug (approx. 51 mm) in the return control nipple and the flow switch in the supply control nipple. If the suggested piping recommendations have been followed, one circuit of a multiple circuit chiller may be back-flushed without shutting down the entire system. Check Y-strainer for any clogging.

9-4 Pump Motor Seal

Pump seals require water for lubrication, so the pump(s) must never be run dry. Always fill the tank before attempting to operate the pump(s). Seal failures usually follow a period of dry operation of the pump.

9-5 Makeup Valve

Periodically inspect the water makeup valve assembly for proper operation. If the valve no longer shuts off completely or reliably, replace it. The plastic ball float should be buoyant for proper operation.

9-6 Recommended Pump Tank Spare Parts

Part no.	Part description	Quantity
A0550190	Pressure gauge	1 per pump
A0102396	Float valve, 1” (approx. 25 mm)	1 per tank
A0069538	Plastic ball float, 6” (approx. 152 mm)	1 per tank
A0102394	Float rod, 10” (25 cm)	1 per tank
- Call Sterling	Pump seal and casing gasket	1 per pump
Parts -

Check your Customer Information Packet for a complete list of spare parts and part numbers for your SSC Series chilling station.

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SSC Series Central Chilling Stations

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Contents SSC Series Central Chilling Stations SSC Series Central Chilling Stations Safety Considerations Wear Safety Glasses and Work GlovesTable of Contents Startup Checklists Getting Started on the SSC Series Advanced TouchscreenCharts and Figures Introduction Necessary DocumentsStandard Features Models CoveredStandard Features on Remote Condensers Available OptionsModel Number Nomeclature Typical Two-Circuit 60-100 Ton Water Cooled Chiller Model SSCW-xxxCooling Capacity tons @ 50F 10 C LWT 73.1 81.4 Typical Two-Circuit 60-100 Ton Remote Air Cooled Chiller Model SSCR-xxxSscr Series Remote Condenser Models Unpacking and Inspection Event of Shipping DamagesReturns If the Shipment is Not CompleteIf the Shipment is Not Correct Uncrating Your New Chiller SSC Series Central Chilling Stations Making Electrical Connections 3InstallationInstallation Location Considerations SSC Series Central Chilling Stations All Models Piping ConsiderationsMaking Process Water Connections Making Tank Piping Connections From ProcessWater Treatment Considerations Water Connection Sizing ConsiderationsGalvanic Corrosion Considerations Making Water-Cooled Condenser ConnectionsInstalling the Remote Air-Cooled Condenser Condenser WaterChecking Motor Direction CompressorSSC Series Central Chilling Stations Lead-Lag Compressors AlarmsStaging Lead-Lag PumpsFreezestat Control Chilled Water CircuitRefrigeration Circuit Volume Freezing Protection CurveLow Pressure Cutout Flow SwitchHigh Pressure Cutout Chilled Water Manifold Control NippleControl Probe Condenser Water ManifoldSSC Series Central Chilling Stations Startup Checklists Water-Cooled SSC Series Startup ChecklistSSC Series Central Chilling Stations Remote Air-Cooled SSC Series Startup Checklist Water-Cooled SSC Series StartupSSC Series Central Chilling Stations Remote Air-Cooled SSC Series Startup Determining Flow Rate ShutdownSSC Series Central Chilling Stations SSC Series Central Chilling Stations Indicator Lights and Control Switches MMI Graphic Panel DevicesSSC Series Central Chilling Stations Touchscreen Interface Introduction MMI Using the StandardTouchscreen Interface Using the SSC Series Standard Touchscreen Interface SSC Series Standard Control PanelMain Menu Screen Compressor Status Screen Viewing and Operating Chiller CompressorsViewing Compressor Status Chiller Configuration Screen Operating the chiller compressorsCompressor Enable Screen Compressor Lead/Lag ScreenViewing Compressor Run Times Compressor Run Time Display ScreenPump Status Screen Viewing and Operating Chiller PumpsViewing Chiller Pump Status Pump Enables Screen Operating Chiller PumpsPump Run Time Display Screen Viewing Pump Run TimesPump Lead/Lag Screen Viewing Active Alarms and Handling Alarm Conditions Alarm Condition ScreenOr Death Viewing and Setting System Temperatures Setting System TemperaturesSSC Series Central Chilling Stations Using the Advanced Using the SSC Series Advanced Touchscreen Interface Main Menu Screen Viewing and Operating Chiller Compressors Chiller Status Screen Operating the chiller compressors Viewing Compressor Run Times Viewing and Operating Chiller Pumps Viewing Chiller Pump Status Operating Chiller Pumps Hourmeters Pump Run Time screen displays Viewing Active Alarms and Handling Alarm Conditions Alarm Condition Screen Or Death System Status Screen Temperature Input Display Screen Condenser Maintenance LubricationMakeup Valve Evaporator MaintenancePump Motor Seal Recommended Pump Tank Spare PartsPreventive Maintenance Service SSC Series Central Chilling Stations 10Troubleshooting Problem Possible Cause SolutionAllow time to cool and reset Verify proper rotation if Service Notes Index Water Treatment Service Notes Service Notes Service Notes Parts Department Sterling Th Street New Berlin, WI 262 641-8610 ∙ Fax 262