USER MANUAL
Models SD-820 to SD-1710 with DDS
Rev 04 – October 2005
11
3.2 OPERATOR CONTROLS (CONTINUED)
o
DEW POINT
liquid crystal display (LCD) – shows the currently measured dew
point. The display flashes
+20
when the measured dew point exceeds the
factory-set alarm limit.
o
POWER
LED – lit when the dryer is powered
o
Flow direction LEDs – identify which dryer chamber is drying or regenerating.
The LED lit at an up arrow shows that chamber is drying. The LED lit at a
down arrow indicates that the chamber is in regeneration mode. A chamber
which is finished regenerating, and is standing by, will have no LED lit.
FIGURE 2 – STATUS DISPLAY
There are two Sullair filter assemblies also required for proper dryer operation. The
prefilter housing has an incident monitor (also known as differential pressure indicator)
and an automatic drain. The afterfilter housing has an incident monitor and manual vent
valve.
Each desiccant chamber has a thermal pressure relief valve at the top (for pressure
relief due to thermal expansion in a shut-in condition), a pressure gauge and desiccant
fill/drain (top/bottom) ports.
Summary of Contents for SD-1050 Series
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