SterlingTEK A0551797 manual Checking Motor Direction, Compressor

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SSC Series condensing pressure with 95ºF (35ºC) condenser air

R-22 = 260 psi (1,793 kPa/17.93 bars)

Note: Due to the variables involved in remote air-cooled condenser installations, no set or standard piping procedure exists. Each installation must be designed and installed by qualified persons. Follow the instructions supplied with the condenser.

3-11 Checking Motor Direction

Compressor

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 will be 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.

Water Pump

A positive pressure of 20 to 30 psi (137.9 to 206.8 kPa/1.38 to 2.07 bars) on the TO PROCESS line indicates correct pump rotation.

Condenser Fan

On SSC Series remote air-cooled units, air should draw through the condenser and discharge up from the condenser.

Changing fan rotation direction

∙Disconnect and lock out power at the fused disconnect.

∙If all fans are going backwards, reverse any two main power leads.

∙If only some of the fans are going backwards, switch any two of their respective motor leads.

SSC Series Central Chilling Stations

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Contents SSC Series Central Chilling Stations SSC Series Central Chilling Stations Wear Safety Glasses and Work Gloves Safety ConsiderationsTable of Contents Getting Started on the SSC Series Advanced Touchscreen Startup ChecklistsCharts and Figures Necessary Documents IntroductionModels Covered Standard FeaturesAvailable Options Standard Features on Remote CondensersModel Number Nomeclature Model SSCW-xxx Typical Two-Circuit 60-100 Ton Water Cooled ChillerCooling Capacity tons @ 50F 10 C LWT 73.1 81.4 Model SSCR-xxx Typical Two-Circuit 60-100 Ton Remote Air Cooled ChillerSscr Series Remote Condenser Models Event of Shipping Damages Unpacking and InspectionIf 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 From Process Making Tank Piping ConnectionsGalvanic Corrosion Considerations Water Connection Sizing ConsiderationsWater Treatment Considerations Making Water-Cooled Condenser ConnectionsCondenser Water Installing the Remote Air-Cooled CondenserCompressor Checking Motor DirectionSSC Series Central Chilling Stations Staging AlarmsLead-Lag Compressors Lead-Lag PumpsRefrigeration Circuit Chilled Water CircuitFreezestat Control Freezing Protection Curve VolumeHigh Pressure Cutout Flow SwitchLow Pressure Cutout Control Probe Control NippleChilled Water Manifold Condenser Water ManifoldSSC Series Central Chilling Stations Water-Cooled SSC Series Startup Checklist Startup ChecklistsSSC Series Central Chilling Stations Water-Cooled SSC Series Startup Remote Air-Cooled SSC Series Startup ChecklistSSC Series Central Chilling Stations Remote Air-Cooled SSC Series Startup Shutdown Determining Flow RateSSC Series Central Chilling Stations SSC Series Central Chilling Stations Graphic Panel Devices Indicator Lights and Control Switches MMISSC Series Central Chilling Stations Touchscreen Interface Using the StandardTouchscreen Interface Introduction MMI SSC Series Standard Control Panel Using the SSC Series Standard Touchscreen InterfaceMain Menu Screen Viewing Compressor Status Viewing and Operating Chiller CompressorsCompressor Status Screen Operating the chiller compressors Chiller Configuration ScreenCompressor Lead/Lag Screen Compressor Enable ScreenCompressor Run Time Display Screen Viewing Compressor Run TimesViewing Chiller Pump Status Viewing and Operating Chiller PumpsPump Status Screen Operating Chiller Pumps Pump Enables ScreenPump Lead/Lag Screen Viewing Pump Run TimesPump Run Time Display Screen Alarm Condition Screen Viewing Active Alarms and Handling Alarm ConditionsOr Death Setting System Temperatures Viewing and 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 Lubrication Condenser MaintenancePump Motor Seal Evaporator MaintenanceMakeup Valve Recommended Pump Tank Spare PartsPreventive Maintenance Service SSC Series Central Chilling Stations Problem Possible Cause Solution 10TroubleshootingAllow time to cool and reset Verify proper rotation if Service Notes Index Water Treatment Service Notes Service Notes Service Notes Sterling Th Street New Berlin, WI 262 641-8610 ∙ Fax 262 Parts Department