Xylem H-310 - Manual (Page 12)

2-2 Installation
H-310
Figure 2-1
3. The H-305 dry air system should be placed in an easily accessible spot. This allows the user to
maintain the desiccant, and if needs be, the wiring inside the junction box.
The H-305 dry air system is designed to protect the sensor from moisture accumulation. The
desiccant inside the dry air system should be checked every 3 to 6 months. The desiccant bags
have a transparent strip which allows the condition of the desiccant to be visually checked. Dry
desiccant is dark blue and saturated desiccant will have turned pink. The desiccant packs can be
reused by drying them in an oven at 125 F to 150 F for 4 to 8 hours or until the desiccant returns
to a dark blue color.