Schmidt AmphiBlast 120 Operation And Maintenance Manual Download

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Carefully read and follow all the recommendations regarding the abrasive blast system installation
requirements. Improper installation can result in equipment malfunction and significant lost time
expenses.

Consult an authorized Schmidt® distributor or Axxiom Manufacturing, Inc.

3.1

Abrasive Blast System Installation Location

i. Portable units:

Units equipped with trailers are portable and can be rolled to locations

where blast jobs are performed. Locate the unit to allow accessibility to the manway and for
ease of abrasive filling. Pay close attention to objects that may be in the path of the pressure
vessel exhaust air (depressurization).

ii. Stationary units

: Units that will be installed in permanent locations require careful

consideration. Stationary units can be installed below an abrasive hopper with a support
structure that can limit access to the abrasive blast system. Install stationary blast systems in
a position that will allow access to the manway and the blaster piping. These areas must be
accessible to perform required maintenance. Pay close attention to objects that may be in the
path of the pressure vessel exhaust air (depressurization). See Section 6.2. The bulk abrasive
blaster manual blowdown valve typically does not have an exhaust hose however; one can
be installed to direct the exhaust air flow into a blast room.

NOTE:

A long blowdown

exhaust hose can lengthen the blowdown time and also presents the possibility of blockage.

Caution:

Units equipped with the CEN Exhaust System are not suited for this modification.

iii

. The bulk abrasive blaster is provided with mounting holes in the bottom leg foot pad. These

holes can be used for securing the blaster to the floor or mounting structure.

3.2

Compressed Air Requirements (blast nozzle)

The blast nozzle size and blast pressure determine the compressed air requirements. Available
air flow capacity and/or air compressor size must be considered before selecting the blast
nozzle size. An air source dedicated to the abrasive blast system is preferred to reduce system
pressure drops and back flow of air. If an existing air compressor will be used or a limited air
supply is available, then the blast nozzle must be selected based on these conditions. Be aware
that as the blast nozzle wears the air demand will increase. See Table 1 in Section 13.0 for air
consumption by nozzle size at various pressures.

Note:

AmphiBlast units can be upgraded to

multiple blast outlets and therefore, this option should be considered when determining
compressed air requirements.

3.3

Air Compressor Size

Air compressor size is crucial to the operation of the abrasive blast system. Blast nozzle
selection and desired productivity must be evaluated to determine the air flow requirements
prior to selecting the air compressor size. Sufficient air supply capacity is necessary to maintain
the system air pressure. Insufficient air flow capacity will result in reduced blast nozzle pressure
and lost productivity. The air compressor must be large enough to supply:

The sum of blast air requirements for each nozzle at the highest pressure that will be
used (see Section 13.0, Table 1).

ii.

The 12 CFM breathing air supplied to each blast operator respirator.

Note

: Reference

OSHA regulations regarding requirements for breathing air, especially when an oil-
lubricated air compressor is used.

3.0 Installation Requirements and Personnel Protective Equipment