SGNe Troubleshooting Guide Page 7
Revision 1.0; Davidson, May 2009. ©Ingersoll Rand Proprietary Information
SGNe
Troubleshooting Guide
Danger
Please utilize extreme caution when performing work within the compressor cabinet.
When opening the cabinet: be certain to wear appropriate PPE (Personal Protective Equipment),
follow lock out-tag out procedures, and ensure all safety procedures are followed
.
Water Cooled
This set point is used to select the type of cooling. The selection is water cooled On or
Off. A selection of Off will mean the unit is air cooled.
Hot Side Thermal Valve
This should only be set to on if the compressor is equipped with a hot side thermal
valve. If this is set to On, the Intellisys will focus on CTD when determining the blower
speed. If this is set to Off, the Intellisys will focus on anti-condensation when determin-
ing the blower speed. Hot side thermal valve operation also requires the cooler out
temperature sensor (4CTT). The default value for this set point is On unless
the unit is a 50 HP, 60 HP, or Viper-N. For these units the default value is Off.
Total Hours
The total hours selection is used to adjust the total operating hours display.
Service Level
This set point is used to select a service level of 1 or 2 for maintenance warnings.
Service Interval Type
This set point is used to select hours or months for measuring the service interval.
This
set point is not used if the service level is 1. Service warnings occur when the
unit has
operated a certain number of hours, based on the total hours, or has
operated for a
certain number of months, based on the real time clock. Service
warnings can have
multiple levels, depending on the service level selection.
Service Interval
This set point is used to select the number of months for measuring the service inter-
val. The selections are 3, 6, 9, or 12 months. This set point is not used if the service
level is 1 or the service interval type is hours.
Service Complete
This set point is used to indicate to the controller that service has been completed.
This set point is not used if the service level is 1.
Service Menu
This set point is used by IR service to gain access to a set of service set points, the
field interface, and the direct read from the VSD function. IR service will enter a code
number to gain access to these items. An incorrect code will send the user back to the
current status display.
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