Sterling SCW Series Lubrication, Condenser Maintenance, Remote Air-Cooled, Water-Cooled

Page 64

9	Routine Maintenance

9-1 Lubrication

Grease all fan bearings, fan motors, and pump motors that do not have permanently sealed bearings. Remove the grease relief plug (motors only) before adding grease. Failure to do so may dislodge the bearing grease retainer which will eventually cause bearing failure.

Lubricate components regularly, based only on the component manufacturer’s specifications for frequency and lubricant.

Compressors require a special scroll oil (Suniso 3GSA or equivalent); failure to use this oil when lubricating will void the

warranty.

9-2 Condenser Maintenance

Dirty condenser heat exchange surfaces reduce system capacity.

Inspect and clean as needed.

Remote Air-Cooled

Brush or vacuum light dirt accumulations. Avoid bending or damaging the fins. Heavy soil accumulations on the coil require professional steam cleaning by a qualified refrigeration service technician. Washing from the outside will only make matters worse.

Water-Cooled

Proper water treatment will greatly reduce cleaning intervals.

Remove dirt in the condenser tubes with a nylon tube brush. Mineral deposits can be removed by circulating Sterling Liquid

De-Scaling Solution (Sterling Model Number A0502600) through the water side of the condenser. Follow the directions on the container.

The refrigerant side is sealed and requires no routine maintenance.

Page 64 of 77

SCW Series Central Chilling Stations

Image 64

Contents SCW Series Central Chilling Stations SCW Series Central Chilling Stations Safety Considerations Wear Safety Glasses and Work GlovesTable of Contents Startup Checklists Indicator Lights and Control Switches MMIViewing and Operating Chiller Pumps Charts and Figures Introduction Necessary DocumentsStandard Features Models CoveredStandard Features on Remote Condensers Available OptionsModel Number Nomeclature Typical Two-Circuit 60-195 Ton Water Cooled Chiller Nominal water flow gpm460/3/60 Vf Typical Two-Circuit 60-195 Ton Remote Air Cooled Chiller 460/3/60Scwr Series Remote Condenser Models Unpacking and Inspection Event of Shipping DamagesIf the Shipment is Not Complete If the Shipment is Not CorrectReturns Bill of lading Packing listUncrating Your New Chiller SCW Series Central Chilling Stations Installation Location Considerations Making Electrical ConnectionsCheck Compressor Rotation Before Starting Unit Making Process Water Connections Piping ConsiderationsTo Process Making Tank Piping Connections Water Connection Sizing Considerations Galvanic Corrosion ConsiderationsWater Treatment Considerations Making Water-Cooled Condenser ConnectionsCondenser Water Installing the Remote Air-Cooled CondenserCondenser Water Out Compressor Checking Motor DirectionWater Pump Condenser Fan Alarms StagingLead-Lag Compressors Lead-Lag PumpsRefrigeration Circuit Chilled Water CircuitFreezestat Control Freezing Protection Curve Percent byFlow Switch High pressure cutout settingHigh Pressure Cutout Low Pressure CutoutControl Nozzle Control ProbeChilled Water Manifold Optional Condenser Water ManifoldSCW Series Central Chilling Stations Startup Checklists Water-Cooled SCW Series Startup ChecklistSCW Series Central Chilling Stations Water-Cooled SCW Series Startup Remote Air-Cooled SCW Series Startup Checklist SCW Series Central Chilling Stations Remote Air-Cooled SCW Series Startup Fan Set on Set off Number Psi KPa BarsDetermining Flow Rate ShutdownIndicator Lights and Control Switches MMI Graphic Panel DevicesSCW Series Central Chilling Stations Operator Interface Using the StandardOperator Interface Introduction Using the SCW Series Standard Operator Interface SCW Series Standard Control PanelViewing and Operating Chiller Pumps Viewing Active Alarms and Handling Alarm Conditions Viewing and Setting System TemperaturesSetting System Temperatures Touchscreen Interface Using the AdvancedTouchscreen Interface Introduction MMI Using the SCW Series Advanced Touchscreen Interface Viewing Compressor Status Main Menu ScreenChiller Status Screen Chiller Configuration Screen SCW Series Central Chilling Stations Compressor Run Time Display Screen Viewing Chiller Pump Status Pump Status Screen Pump Enables Screen Pump Run Time Display Screen Pumps Alarm Condition Screen Viewing and Setting System Temperatures System Status Screen Temperature Input Display Screen Condenser Maintenance LubricationRemote Air-Cooled Water-CooledEvaporator Maintenance Pump Motor SealMakeup Valve Recommended Pump Tank Spare PartsPreventive Maintenance Service SCW Series Central Chilling Stations Troubleshooting Problem Possible Cause Solution Verify proper rotation if Service Notes Index Determining Flow RateSCW Series Central Chilling Stations Service Notes Service Notes Service Notes Technical Assistance Parts Department