1
1.0 INTRODUCTION
1.1 This manual prov ides information to help you
install, operate and maintain the Models 22000ST
and 33000ST Comp ressor Dehydrators.
1.2 The overall design of the two models is the
same. The difference between them is the size of
their heatless dryer, the horse power and electrical
characteristic of their compressors and their dry air
output capacity. The Model 22000ST operates on
single phase electrical service and has an output dry
air capacity of 22,000 SCFD. The Model 33000ST
operates on 3 phase electric service and has an output
dry air capacity of 33,000 SCFD. All dehydrators
supply an outlet air dew point of -40
0
F. (-40
0
C.) or
lower.
1.3 These models contain several advances in air
dryer design which will be of help to you in operat-
ing and in maintaining them. We recom mend that
you review the manual before installation, even if
you are experienced with other designs.
1.4 Particular attention should be given to the start
up procedure. There is a 5 second time delay be-
tween power on and actual start up. Section 2 will
introduce you to the major improvements of the
design. For those familiar with the Dielectric C.O.
dehydrators, Section 2 will refresh your memory
about some helpful characteristics carried forward
to the present models.
1.5 Both models have two high-capacity water-
sealed compressors and a self-regenerating DRY-
PAK heatless drying module that operate well in
harsh environments. However, providing a more
moderate environment will improve performance,
service life and will reduce maintenance require-
ments to a minimum.
2.0 FEATURE DESCRIPTIONS
ITEM SECTION
Display Module 2.1
Sensor Module 2.2
Alarm/ATS Module 2.3
Cabinet Features 2.4
Compressor 2.5
DRY- PAK Heatless Dryer 2.6
Humidity Sensor 2.7
Passive Air Intake 2.8
System Pressure Control 2.9
Water System 2.10
Optional Water Chiller 2.11
2.1 DISPLAY MODULE
2.1.1 The SmartTech™ features an easy-to-read
four line digital display and is backlit for low light
installations. Under normal operating conditions,
the air dryer is continuously displaying System Pres-
sure, Line Pressure, Flow, %RH, Wa ter Temperature
and Air Temperature. Should an alarm occur, this
display will show the primary alarm along with the
date and time the condition occurred. A softkey
Help Menu is available to assist with the diagnosis
of the alarm condition.
2.1.2 Four softkey buttons are used to interface with
the program to change operating parameters as well
as reset alarms and access the Help Menu. The Setup
Menu is used to set Date, Time, Start-up Delay, Line
Pressure Alarms and High Flow Warning. See the
Appendix for detail operation and menuing.
2.1.3 A large tricolored LED indicates the status of
the Air Dryer and functions in the same way as the
ATS 300 IUCs, Flashing Ye llow indicates Start-up.
Flashing Green/Yellow indicates Running and Alarm
Disarming, Solid Green indicates Running with
Alarms armed, Flashing Red and Green indicates
Minor Dryer Alarm, Solid Red indicates Major
Dryer Alarm, and Flashing Red indicates Manual
Mode. Manual Mode is used while troubleshoot-
ing, performing maintenance or in an emergency
situation.
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