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The AirPrep System is a Pressurized Vessel. Propelled objects will cause serious injury or death.
Depressurize vessel before performing any maintenance. See Section 6.2.
8.1.
The ASME Code is a standard covering materials, design, fabrication, and installation. Vessel
integrity subsequent to purchase is the responsibility of the owner and/or user. At intervals
required by state law and/or local authorities, the vessel should be subjected to a hydrostatic test
as described in the ASME Code, Section VIII, Division 1. Do Not subject the AirPrep System
pressure vessel to a pneumatic proof test exceeding the maximum allowable working pressure. In
no case should the hydrostatic test pressure exceed 1.3 times the maximum allowable working
pressure (MAWP) shown on the pressure vessel nameplate. Thoroughly clean and dry the vessel
before re-assembly. Moisture or debris left in vessel can cause equipment malfunction.
8.2.
Any damage to an AirPrep System can make it unsafe. Inspect the exterior of the AirPrep
System pressure vessel daily for corrosion, pitting, or other damage (i.e. dents, gouges or
bulges). If damaged, take out of service immediately and have it inspected and/or repaired by a
qualified facility. Contact Axxiom Manufacturing, Inc. for technical support.
8.3.
The interior condition of the AirPrep System pressure vessel (#20) should be inspected quarterly.
Pitting caused by corrosion will reduce the wall thickness of the vessel. If excessive corrosion is
found, have the AirPrep System pressure vessel inspected by a qualified facility. Contact
Axxiom Manufacturing, Inc. for technical support.
Check the pressure vessel internal piping for corrosion, cracks, and holes.
8.4. MOISTURE
ACCUMULATION
Once a day, with the AirPrep System pressurized, completely open the drain valves (#7) on the
pre-filter (#4) and after-filter (#5), the air filter petcock valve (#22), and the drain/blowdown ball
valve (#19) to blow out all moisture and debris that may have accumulated. Close these ball
valves when the AirPrep System is not in use.
8.5. AFTERCOOLER
Inspect the unit quarterly for loose bolts and/or connections. Inspect for corrosion and
dirty/clogged heat transfer surface (cooling coil). Caustic cleaners should not be used to clean
any part of the aftercooler radiator.
8.5.1 Heat Transfer Surface
Dirt and dust should be removed by brushing the fins and tubes then blowing loose dirt
off with an air hose. If the surface is greasy, the motor should be removed and the fins
and tubes should be brushed or sprayed with a non-flammable degreasing fluid. Follow
with a hot water rinse and dry thoroughly. A steam hose may also be used effectively.
Check the surface for bent fins. Bent fins restrict air flow and reduce the cooling
capabilities of the AirPrep System. Straighten and separate any bent heat transfer fins.
8.5.2 Fan shroud, Fan and Motor
Dirt and grease should be removed from these parts. Rusty or corroded surfaces should
be sanded clean and repainted.
8.0 Maintenance and Inspection Instructions
