SterlingTEK A0551797 manual Verify proper rotation if

Page 79

Problem

Possible Cause

Solution

 

 

Verify proper rotation; if

 

Pump is running in reverse.

incorrect, see Changing

 

Rotation Direction on Page

 

 

 

 

25 for more information.

Pump pressure is too low.

 

Clean the system. You may

 

also have to pull the pump

 

 

 

Check for foreign matter.

and inspect the impeller.

 

Check for foam in the water

 

 

 

 

circuit; add anti-foam if

 

 

needed.

 

 

Isolate evaporator, thaw out,

Process water pressure low,

 

check for leaks. Check

Evaporator frozen.

coolant solution. Coolant

pressure at pump high.

solution should be good for at

 

 

 

least 10ºF (6ºC) below

 

 

leaving water temperature.

 

Restricted condenser air flow.

Clean air filters, clean

 

condenser, check water flow.

 

 

 

Refrigerant not feeding.

Check superheat on

 

expansion valve.

 

 

 

Improper water/glycol

Make sure that coolant

 

mixture protection is right for

 

solution.

Unit runs continuously, but

the process.

 

not enough cooling

Poor heat transfer in

Backflush and clean

power.

evaporator.

evaporator.

 

Unit low on refrigerant.

Call service.

 

Low water flow through

Increase flow to design flow

 

evaporator.

of 2.4 gpm/ton.

 

Inefficient compressor.

Call service.

 

Unit under-sized for

Call sales representative.

 

application.

 

 

.

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 ConnectionsMaking Water-Cooled Condenser Connections Water Connection Sizing ConsiderationsGalvanic Corrosion Considerations Water Treatment ConsiderationsCondenser Water Installing the Remote Air-Cooled CondenserCompressor Checking Motor DirectionSSC Series Central Chilling Stations Lead-Lag Pumps AlarmsStaging Lead-Lag CompressorsRefrigeration Circuit Chilled Water CircuitFreezestat Control Freezing Protection Curve VolumeHigh Pressure Cutout Flow SwitchLow Pressure Cutout Condenser Water Manifold Control NippleControl Probe Chilled 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 MaintenanceRecommended Pump Tank Spare Parts Evaporator MaintenancePump Motor Seal Makeup ValvePreventive 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
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