SterlingTEK A0551797 manual Determining Flow Rate, Shutdown

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Note: If the recirculation pump does not turn on (or that the flow switch is not satisfied) the compressors will not be allowed to turn on.

6.Check the pump(s) amp draws and pressures. The amp draws must be within the pump(s) running load and service factor amps.

7.Operate the chiller, looking for leaks and listening for unusual noises or vibrations that could indicate improper operation.

8.Check condenser fans for pressure switch settings as shown in the table below:

Fan		Set on			Set off
number	psi	kPa	bars	psi	kPa		bars
1		not applicable; Fan 1		is a variable-speed fan
2	240	1,654.8	16.5	190	1,310.1		13.1
3	265	1,827.2	18.3	215	1,482.4		14.8
4	285	1,965.1	19.7	235	1,620.3		16.2
5	305	2,102.9	21.1	255	1,758.2		17.6

5-6 Determining Flow Rate

To determine flow:

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

2.Start the pump and make note of the discharge pressure in psi (kPa/bars).

3.Check the pump curve for the appropriate horsepower pump at the discharge pressure psi.

4.Project this point down to find the flow in gpm (lpm).

5.Process pumps can be left wide open if running amps are below full load amps.

5-7 Shutdown

1.Ready process and related equipment for shut down.

2.Turn off main power.

3.Close the water make up valve.

4.If the system is to be drained, open the 2” drain valve.

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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