SGNe Troubleshooting Guide Page 9
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
.
Automatic Stop Pressure
The compressor will stop once the system pressure rises to this pressure and the
co
mpressor is operating at the minimum speed. The range for this set point will be the
target pressure+1 to target pressure+10 psi if the target pressure is 145 psi or less, to
target pressure+7 psi if the target pressure is greater than 145, but less than or equal
to
175 psi, or to target pressure+5 psi if the target pressure is greater than 175 psi.
Immediate Stop Pressure
The compressor will stop if the system pressure rises to this pressure. The range for
this set point will be the automatic stop pressure to automatic stop pressure+10 psi if
the target pressure is 145 psi or less, to automatic stop pressure+7 psi if the target
pressure is greater than 145, but less than or equal to 175 psi, or to automatic stop
pressure + 5 psi if the target pressure is greater than 175 psi.
Blowdown Mode
If this mode is selected to “ON”, the compressor will de-energize the blowdown sole-
noid anytime that it stops. This will keep the compressor from staying pressurized
when it is stopped. If this mode is selected to “OFF”, the blowdown solenoid will stay
energized when the compressor stops due to an auto stop or an immediate stop. This
set point is only used in single stage compressors. If the compressor is a 2 stage unit,
blowdown mode will be listed as not installed and the compressor will always blow-
down when it stops. Blowdown mode cannot be set to On in 2 stage compressors.
Condensate Release
This is the number of seconds that the condensate solenoid will be open (energized)
when blowing out the condensation
Condensate Interval
This is the time interval between condensation blow downs.
% Savings Compared To
This set point is to determine what Nirvana’s percent of savings is compared to.
The modes of operation for comparing Nirvana to are modulation, online/offline,
and geometry.
The percent savings value is displayed by the status message, % energy savings.
Energy Rate
This set point is used to enter the cost per kilowatt hour into the Intellisys. This value
is
used for calculating energy cost and energy savings in the energy status menu.
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