TSI Instruments 3062 - Maintaining the Diffusion Dryer; Water Trap and Drain Valve; Drying the Silica Gel; Schematic of Desiccant Dryer Tube

4 Model 3062 Diffusion Dryer
Inner Tube Made of Wire Screen
Annular Space Filled with Silica Gel
Wet Aerosol In Dry Aerosol Out
Figure 2
Schematic of Desiccant Dryer Tube
Maintaining the Diffusion Dryer
This section describes routine maintenance required for the
Diffusion Dryer. The section includes procedures on draining the
water trap, removing, installing and drying the silica gel.
Water Trap and Drain Valve
The water trap provides a place for large water droplets to collect
extending the life of the desiccant. This trap should be periodically
drained as it collects water. To drain, rotate the valve clockwise
until the water has been removed. Retighten the valve until snug.
Drying the Silica Gel
The silica gel contains indicator crystals that are blue when dry and
become pink when wet. To dry the gel, remove it from the system
(see next section) and bake it in a pan in an oven at 250°F [120°C]
until the blue color returns. If the blue color does not return, the
silica gel is no longer usable and must be replaced.