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Maintenance Screen
The Maintenance Screen continuously tracks and records annual filter changes in the nitrogen generator.
After replacing filters, press and hold “Record Filter Change” button for 5-seconds which records the time
and date of the filter change and resets the Filter Alert timer. The Maintenance Screen displays the
anticipated remaining life of the filters in hours of use.
Nitrogen Purity Level Check Procedure
Nitrogen purity level in the fire sprinkler system can be checked by inserting the Handheld Gas Analyzer
(PHGA-1) into the nitrogen sampling port in the nitrogen generator cabinet (when running) or the gas
sampling port on the PAV-D/DQ or PSV-D/DE Vents.
1. Power On the PHGA-1 by pressing the power on button.
2. Calibrate the PHGA-1 by pressing and holding the calibration button for three (3) seconds until
“CAL” is displayed.
NOTE: To calibrate analyzer, unscrew sampling hose from analyzer and move back and forth until
reading is displayed.
a. PHGA-1 must be recalibrated if nitrogen percentage displayed is above 80.1% or below
78.1% when reading normal atmosphere, not connected to the nitrogen generator
cabinet/vent.
b. Recommended to recalibrate analyzer daily when in use.
3. Once the PHGA-1 is calibrated, insert the quick disconnect of the sampling hose into the sampling
port in the nitrogen generator cabinet/vent.
NOTE: Nitrogen generator must be operating in “nitrogen production mode” to sample nitrogen
in cabinet.
Vent must be open to sprinkler system pressure to sample nitrogen in sprinkler system.
4. Allow one (1) minute for the PHGA-1 to stabilize, verify and document reading on PHGA-1
(nitrogen level should be approximately 98%). If nitrogen level from generator is below 96%,
contact ECS.
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