ATI Technologies 250 Instruction Manual
Accessories
Diffusion Dryer
Model 250
Instruction Manual
P/N 1800114, Revision C
December 2012
i
Sections
Contents
Introduction .............................................................................................. 1
Unpacking ................................................................................................. 3
Installation ................................................................................................ 3
The Diffusion Dryer Components ............................................................ 4
Inlet and Outlet Connectors ............................................................. 4
Desiccant Dryer .............................................................................. 4
The silica gel cartridge .................................................................... 4
Servicing the Diffusion Dryer................................................................... 6
Restoring the Desiccant Cartridge ................................................... 6
Removing the Desiccant Cartridge .................................................. 6
Inserting the Desiccant Cartridge .................................................... 7
Figures
Tables
Specifications ............................................................................................ 9
Contacting ATI for Service ................................................................ .... 10
For Technical or Application Questions ........................................ 10
For Customer Service .................................................................... 10
MSDS Silica Gel...................................................................................... 11
Warranty ................................................................................................ 14
Figure 1 Diffusion Dryer ............................................................................ 2
Figure 2 Schematic of the desiccant cartridge assembly (Patent Pending) ... 5
Figure 3 Replacing the desiccant cartridge .................................................. 8
Table 1 Packing List for the Diffusion Dryer Model 250............................. 3
Table 2 Drying Capacity of the Diffusion Dryer (Model 250) ..................... 6
Table 3 Specifications of the Diffusion Dryer Model 250 ........................... 9
Diffusion Dryer Model 250
ii
Diffusion Dryer Model 250
1
Introduction
Diffusion Dryer
Model 250
The Diffusion Dryer is designed as a general-purpose aerosol
dryer. A water trap at the inlet of the dryer removes coarse water
droplets. The aerosol is then passed through a removable
cartridge containing the silica gel. The cartridge is formed by two
concentric cylinders, an inner fine wire mesh screen and an outer
wire mesh screen.
As the aerosol goes through the inner cylinder of the cartridge,
the water vapor diffuses into the silica gel through the mesh
screen. Silica gel is an amorphous form of silicon dioxide, which
is synthetically produced in the form of hard irregular granules or
hard irregular beads. A micro porous structure of interlocking
cavities gives a very high surface area (800 square meters per
gram). It is this structure that makes silica gel a high capacity
desiccant. Water molecules adhere to the gels surface because it
exhibits a lower vapor pressure than the surrounding air. When
pressure equilibrium is reached, no more adsorption occurs. The
beauty of silica gel is the physical adsorption of water vapor into
its internal pores. There is no chemical reaction, no by products
or side effects. Even when saturated with water vapor, silica gel
still has the appearance of a dry product, its shape unchanged.
The silica gel is easily regenerated in an oven at 250°F for three
hours.
Particle loss is minimized because the particles do not come into
contact with the silica gel.
Diffusion Dryer Model 250
2
Sealing Plug
Inlet Connector
Desiccant Dryer
Removable
Outlet
Mounting
plate
Spring holder
Figure 1
Diffusion Dryer
End Cap
Diffusion Dryer Model 250
3
Qty.
Item
Part Number
1
Desiccant Dryer Assembly
0200289
1
Spare Desiccant Cartridge
0200293
1
Instruction Manual
1800114
1
Mounting template for the dryer holders
1700157
1
MSDS Silica Gel
N/A 2 Fitting Kit
N/A
Unpacking
The Diffusion Dryer consists of a desiccant dryer assembly with
fittings attached, a silica gel cartridge and accessories, including
the following:
Table 1
Packing List for the Diffusion Dryer Model 250
After unpacking, if anything is missing or appears to be damaged,
contact ATI Customer Service at (410) 363-9696.
Installation
Two spring-action holders coated with white nylon are provided to
mount the dryer horizontally. See the included sheet for mounting
instructions.
To install the silica gel cartridge in the dryer, refer to the section
“Inserting the Desiccant Cartridge” page 7.
The dryer is conveniently fitted with CPC Quick Couplings with
a 1/8” nominal flow. Matching couplings with hose barb
connection are provided to connect the dryer to ¼” inside
diameter tubing. Before using the dryer, remove the sealing plug
from the inlet and outlet of the dryer.
Diffusion Dryer Model 250
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