Sterlco GP Series 20-60 HP Packaged Chillers - Manual (Page 54)

GP Series Portable Chillers Chapter 6: Troubleshooting 54 of 93
Chapter 6: Troubleshooting
Many problems that can occur while operating the chiller can be avoided by following the recommended
installation, operation, and maintenance outlined within this manual. If you do have a problem this
Chapter will help you determine the cause and the potential solution.
Before beginning the troubleshooting process
• Locate all wiring, piping, and assembly drawings that were shipped with the chiller. The
diagrams will note any custom options not covered in this manual.
• Locate all manuals for any equipment that this chiller is connected to as they may provide
additional information to solve the problem.
Improper installation, operation, or any servicing may result in damage or personal
injusry
This chiller should only be installed, operated, and maintained by qualified technical
personnel who are familiar with the construction, operation, and potential hazards.
All wiring, disconnects, and over-current protection devices should be installed by a qualified
electrician in accordance will all local codes and ordinances in your region.
Electrical Hazard
Before performing any service on this equipment disconnect and lockout all electrical sources
to prevent injury from unexpected energization or startup. Follow all safety rules when
performing any maintenance or service to this equipment.
Refrigeration Hazard
Only certified refrigeration technicians should perform any refrigeration related maintenance.
Hot Surfaces
Protect yourself from hot surfaces when working on the refrigeration or process temperature
sections of this equipment. These devices can reach temperatures of 180°F (82°C). Allow
the equipment to cool prior to performing any maintenance or service.
6-1 Identifying the Cause of a Problem
Types of conditions the user may see include alarm conditions and control problems.
Alarm Conditions
When an alarm condition occurs the button backlight will flash, and if the optional
audible/visual alarm is installed the strobe and horn will energize. The light and horn will
remain on until the condition is corrected. Pressing the enter button will silence the audible
alarm, but the strobe will continue to flash.
The display will show the cause the alarm and will indicate a possible solution. To accept the
alarm press , and follow the suggested solution to correct the alarm condition. The
following table shows the possible alarm messages that could appear on the display.