Sterling GP Series specifications Controller Setpoints

Page 28

4-5

Controller Setpoints

 

 

 

 

 

 

 

 

Variable

Description

Access Level

 

Operator

Supervisor

 

 

 

 

Leaving Temp

Temperature of fluid out to process

x

x

 

 

 

 

 

 

Hi Temp Warning

Setpoint for alarm to warn when leaving fluid

x

x

 

temperature is too high

 

 

 

 

 

Hi Temp Fault

Setpoint to shut down pump and compressor based on

x

x

 

leaving fluid temperature

 

 

 

 

 

Compressor On

Temperature Difference between Leaving Fluid

 

x

 

Differential

Temperature and Setpoint to turn on the compressor

 

 

 

 

 

Compressor Off

Temperature Difference between Leaving Fluid

 

x

 

Differential

Temperature and Setpoint to turn off the compressor

 

 

 

 

 

Pump Stop Delay

Delay time in seconds between fault and stopping the

 

x

 

pump

 

 

 

 

 

 

Low Temperature

Temperature to activate Low Temperature Warning

 

x

 

Warning

alarm

 

 

 

 

 

Low Temperature Fault

Temperature to activate Low Temperature Fault alarm

 

x

 

 

 

 

 

 

Water Make-up On

The tank level to turn on optional water make-up valve;

 

x

 

based on size of tank

 

 

 

 

 

 

Water Make-up Off

The tank level to turn off optional water make-up valve;

 

x

 

based on size of tank.

 

 

 

 

 

 

Water Make-up Time

The time in seconds that controller will allow for filling

 

x

 

the tank

 

 

 

 

 

 

Low Level Warning

Tank level that will activate Low Level Warning alarm

 

x

 

 

 

 

 

 

Low Level Fault

Tank level that will activate Low Level Warning fault

 

x

 

 

 

 

 

 

High Level Warning

Tank level that will activate High Level Warning alarm

 

x

 

 

 

 

 

 

High Level Fault

Tank level that will activate High Level Warning fault

 

x

 

 

 

 

 

 

High Temperature

Delay time in minutes between fault and stopping the

 

x

 

Delay

compressor and pump

 

 

 

 

 

Alarm Silence Time

Time in minutes to silence alarm (with optional audible

 

x

 

alarm). After time alarm will reactivate.

 

 

 

 

 

 

Operator Password

Time in minutes for operator password to be active

 

x

 

Time

 

 

 

 

 

 

Supervisor Password

Time in minutes for supervisor password to be active

 

x

 

Time

 

 

 

 

 

GP Series Portable Chillers

Chapter 4: Operation

28 of 44

Image 28
Contents GP Series Portable Chillers Shipping Information Table of Contents Maintenance How to Use This Manual SafetySafety Symbols Used in this Manual Responsibility Functional Description Models Covered in This ManualGeneral Description Chilled Water CircuitMechanical Features Standard FeaturesElectrical Features Safety Devices and Interlocks Refrigeration FeaturesController Features Other FeaturesOptional Features Flow SwitchHigh Pressure Cutout Remote Start/Stop InterlockMounting Features Optional Pump Amperages Voltage Construction Full Load Amps Uncrating InstallationElectrical Connections Process Water Connections Bypass Valve ConsiderationsGalvanic Corrosion Considerations Water Treatment ConsiderationsWater-Cooled Chiller Condensers Condenser ConsiderationsAir-Cooled Chiller Condensers Three-Phase Compressors Checking Motor DirectionWater Pumps Condenser FanWater Reservoir Part Number DescriptionEthylene Glycol and Propylene Glycol Curves Automatic Water Make-Up Option Finishing Setup Setting Up PasswordsInitial Start-Up Page Page Operation Panel Buttons, Indicator Lights, and SwitchesMicroprocessor Controller Main Status Screen Operator Setpoints Screen Status Screens Access Levels Page Controller Setpoints Menu Screen Alarms Optional CommunicationsGP Series Portable Chillers Operation Maintenance Filter CleaningLubrication Maintaining the CondenserMaintaining the Evaporator Preventative Maintenance ServiceEvaporator Process Piping Y-Strainer Troubleshooting GP Series Portable Chillers TroubleshootingGP Series Portable Chillers Troubleshooting Warranty Returns AppendixReturned Material Policy Credit ReturnsService Department Technical AssistanceParts Department Sales DepartmentSpecifications Air-Cooled Portable ChillersPAC-40 Water-Cooled Portable Chillers PWC-20PWC-50 Pump Curves, Flow, and Pressure Considerations Hertz Pump CurvesCalculating Chiller Nominal Flow and Pressure to Process Electrical Schematic