Maintenance – Alpha Technologies AlphaGen 5.0kW Auxiliary Power Unit User Manual
Page 64
64
3. Maintenance
031-132-B0-001 Rev. A
TM
©2000
Calibration Procedure, continued
7.
Verify the DWYER # 1212 manometer reads 5-1/2" above the 0 mark,
and 5-1/2" below the 0 mark. This equals 11" water column of
pressure. Adjust the Maxitrol regulator in a clockwise direction to
increase pressure, and in a counterclockwise direction to decrease
pressure.
CAUTION:
DO NOT BOTTOM OUT THE REGULATOR ADJUST
SCREW. RETEST THE INLET PRESSURE TO THE
MAXITROL GAS PACKAGE.
8.
Press and hold the ECMs RAS switch in the STOP position until
the generator stops.
9.
Disconnect the DWYER # 1212 manometer gas pressure test kit from
the Secondary Demand Regulator.
10. Reapply a small amount of an approved propane/natural gas pipe paste
to the Allen head cap screw, replace and tighten into the demand
regulator.
11. Replace the Maxtrol regulator access cap and gasket, and tighten.
3.17 Maxitrol Pre-Regulator Calibration, continued