Schmidt ACS 1200, Operation And Maintenance Manual

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46 Copyright © 2020 Axxiom Manufacturing, Inc.
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.
AirPrep System Pressure Vessel: The ASME Code is a standard covering materials, design,
fabrication, and installation. Vessel integrity after 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.
AirPrep System Pressure Vessel: Any damage to an AirPrep System can make it unsafe. Inspect
the exterior of the AirPrep System pressure vessel weekly 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. AirPrep System Pressure Vessel: The interior condition of the AirPrep System pressure vessel
(#12) should be inspected quarterly. Pitting caused by corrosion will reduce the wall thickness of
the vessel. If excessive corrosion is found, have the abrasive blast vessel inspected by a qualified
facility. Contact Axxiom Manufacturing, Inc. for technical support. Refer to the ASME Data report
for the pressure vessel minimum thicknesses.
Check the pressure vessel internal piping for corrosion, cracks, wear, holes, or any other damage.
Repair or replace damaged components.
8.4. Moisture Accumulation
Once a day with the AirPrep System pressurized completely open the drain valves (#3) on the pre-
filter (#1) and after-filter (#2), the air filter petcock valve (#14), and the drain/blowdown ball valve
(#11) 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 Radiator (Heat Exchanger)
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 Exchanger Surface
Dirt and dust should be removed by brushing the cooling 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 cooling fins restrict air flow and reduce the cooling
capabilities of the AirPrep System. Straighten and separate any bent heat exchanger cooling
fins.
8.0 Maintenance and Inspection Instructions