SGNe Troubleshooting Guide Page 13
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
.
If a zero value is +/- 10% of the scale then calibration should not be allowed. If this
occurs, the following message will be displayed: Invalid Calibration
Alarm History
The ALARM HISTORY screen gives the operator the capability to scroll through the
stored alarms (15 most current) experienced by the machine. Each alarm is labeled by
number (i.e. “Alarm History 1”) and listed in the order of most recent alarm being first.
Pressing the SELECT button when one of the alarms is highlighted will display the list
of machine values that existed at the time that particular alarm occurred.
Clock Functions
The clock functions screen is used for setting the time and date for the real time clock.
Time: This is used for setting the hours (0 - 23) and minutes (0 - 59).
Date: This is used for setting the month, day, and year.
Service Display Menu 3
The service display function can only be accessed from the service menu. A code
number is entered to access this function. The service display function will only be
accessed by IR service. This function will allow IR service personnel to read a
selected
group of operation values that are not made available to the customer
along with some
of the values from the current status display.
% Capacity
Displays the compressor’s current percent capacity. This value will be determined
by the actual speed vs. the maximum speed.
Inlet Temp
Displays the reading from temperature sensor 1ATT.
Package Discharge Temp
Displays the reading from temperature sensor 4ATT.
Airend Discharge Temp
Displays the reading from temperature sensor 2ATT.
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