Alpha Technologies AlphaGen 5.0kW Auxiliary Power Unit - Manual (Page 49)

3. Maintenance
49
031-132-B0-001 Rev. A TM ©2000
3.10 Fuel Conversion - Natural Gas to Liquid Propane
3.10.1 Pre-regulator/Low Fuel Pressure Switch Replacement
Allow 10 minutes for completion of procedure.
Tools required: 7/8” open-end wrench
Amp Contact Extraction tool, Part No. 455822-2
Repair and/or replacement procedure:
End of Procedure
7. Insert the wires into the enclosure,
and install the two-pin connector. Plug
halves of connector together.
8. Switch fuel supply on.
NOTE: Perform the procedure in
reverse order if installing a new
pre-regulator, or converting
the unit from Liquid Propane to
Natural Gas.
1. Verify fuel supply is shut off.
2. Unplug connector, Use pin extraction tool to
remove pins from connector. Pull wires
through fitting.
3. With 7/8” wrench, loosen pre-regulator
fitting. Remove pre-regulator.
4. Push wires through enclosure wall. Reattach
connector.
5. Install new pre-regulator, and tighten fittings.
NOTE: During installation, verify the flange
fitting is clean prior to making the
connection (It is not necessary to
use sealing compound).
6. Pull wires through far enough to reach the
mating connector. Clamp wires into fitting
by tightening the clamping nut on the inside
of the cabinet so there are no “leak holes”.
tighten