Sterling GP Series - Manual (Page 30)

GP Series Portable Chillers Chapter 4: Operation 30 of 44
the to accept the password. The following screen will appear.
Figure 9 - Operator Setpoints Screen
3. Depress to move the cursor to the Leaving Temp line. Use the or
button to increment or decrement the value. Depress to accept the
value and move the cursor down one line.
4. Adjust the Hi Temp Warning and Hi Temp Fault in the same manner.
5. Depress the button twice to return to the main status screen.
4-6 Alarms
The controller is setup with multiple alarms, most of them configurable using the Supervisor
password. Section 4-5 Controller Setpoints gives a list of alarms that the controller is setup to
display. The alarms are broken up into two categories – warnings and faults. The warning
notifies the user that the parameter has been exceeded and the chiller is allowed to keep
operating, but should be monitored to determine the cause of the warning. The fault notifies
the user that the parameter has been exceeded and the chiller and pump has been shut down to
protect the system.
4-7 Optional Communications
The communications function allows you to monitor and set the parameters by a program
prepared and running on a host computer connected to the controller.
When using the communications function, you must add on the unit for RS-485 Modbus
communications. The communications function allows you to read/write parameters, do
operating instructions, and select the setting level.