Chapter 4: Operation

4-1 Panel Buttons, Indicator Lights, and Switches

Microprocessor Controller

The standard chillers use a microprocessor-based PID controller. The Carel PCO controller along with the Carel PGD1 Interface is a modular, self-contained unit that can slide from its mounting housing. It is factory set and adjusted; no field adjustment to the internal controls is necessary. The standard operation range is 20ºF to 80ºF (-7ºC to 27ºC).

Figure 7 - Controller Display

Button

Button Description

 

Detailed description

 

Menu Button

 

Used to access the menus structure of the PGD interface

 

 

 

 

 

 

 

 

On/Off Button

 

Used to turn the entire chiller On or Off. The button is backlit and will

 

 

 

turn amber when the chiller is On.

 

 

 

 

 

Back Button

 

Used to back up from a menu and return to the main status screen

 

 

 

 

 

 

 

 

Up Arrow Button

 

Used to increment a data field or scroll up within a menu structure.

 

 

 

 

 

 

 

 

Enter Button

 

Used to accept a data field value or to select a menu item.

 

 

 

 

 

 

 

 

Down Arrow Button

 

Used to decrement a data field or scroll down within a menu structure.

 

 

 

 

 

 

 

GP Series Portable Chillers

Chapter 4: Operation

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Sterling 882.93092.00 specifications Operation, Panel Buttons, Indicator Lights, and Switches, Microprocessor Controller

882.93092.00 specifications

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