SterlingTEK A0551797 manual SSC Series Central Chilling Stations

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þComplete all piping leading to and from the pump tank. Observe all applicable codes.

þComplete all electrical wiring. Observe all applicable codes.

þPrepare all related equipment in the system for operation.

Note:

∙Never switch contactor leads or motor leads for reversing rotation.

∙Do not use contactor or motor leads for phase matching.

∙Compressor noise from reverse rotation is noticeable. Do not run in this mode for more than ten (10) seconds. The compressor shuts off if run longer in this mode.

∙Reverse rotation can cause suction and discharge pressures to be approximately equal; amp draws are lower than normal.

∙If you discover that compressor rotation is reversed, correct it by switching any two main power leads into the disconnect switch or distribution block on the unit.

þOpen the 1” (approx. 25 mm) makeup water valve and allow the tank to fill until the automatic float valve shuts off. The float level should be adjusted so the standing water level is 8” (20 cm) from the top of the tank.

þCheck for proper pump rotation direction. To confirm proper rotation:

1.Observe a pump pressure gauge connected to the suction and discharge sides of the pump casing through two ¼” (approx. 6.4 mm) gauge cocks.

2.Close the gauge cock leading to the pump suction and open the gauge cock leading to the pump discharge.

3.Close the discharge butterfly valve, crack it open, then start the pump and observe the gauge.

∙If the gauge indicates within 15 psi (103.4 kPa/1.03 bars) below the pump curve, pump rotation is correct. Pump rotation is clockwise opposite the shaft end.

∙If the gauge indicates 20 psi (137.9 kPa/1.38 bars) or more below the pump curve, the pump is running backwards. Reverse rotation by interchanging any two power mains to the pump motor or starter.

∙Recheck the pressure to be sure it increased.

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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 DamagesIf the Shipment is Not Correct If the Shipment is Not CompleteReturns Uncrating Your New Chiller SSC Series Central Chilling Stations Installation Location Considerations 3InstallationMaking Electrical Connections SSC Series Central Chilling Stations Making Process Water Connections Piping ConsiderationsAll Models 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 PumpsRefrigeration Circuit Chilled Water CircuitFreezestat Control Volume Freezing Protection CurveHigh Pressure Cutout Flow SwitchLow 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 Using the StandardTouchscreen Interface Introduction MMI Using the SSC Series Standard Touchscreen Interface SSC Series Standard Control PanelMain Menu Screen Viewing Compressor Status Viewing and Operating Chiller CompressorsCompressor Status Screen Chiller Configuration Screen Operating the chiller compressorsCompressor Enable Screen Compressor Lead/Lag ScreenViewing Compressor Run Times Compressor Run Time Display ScreenViewing Chiller Pump Status Viewing and Operating Chiller PumpsPump Status Screen Pump Enables Screen Operating Chiller PumpsPump Lead/Lag Screen Viewing Pump Run TimesPump Run Time Display 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