5
1.
For minimum inlet air pressures that fall between
column values, the setting for the lower pressure is
recommended. (i.e. select the 100 psi column values
for 124 psi inlet pressure listed in Table 1.)
Table 1 Timed drain illuminated LED Settings
2.3 Timer Drain
(Only Models with I-Controller Level 2)
NOTE: The Timer Drain LED level has been pre-
programmed at the factory for your specific dryer.
Programming is based upon a minimum of 100 psi
saturated inlet air pressure and maximum energy
efficiency. The drain open time is fixed at one second and
a small amount of air will be exhausted with each cycle.
Generally, no adjustment to the timer is required.
If water is present downstream of the
dryer, always verify that any condensate drains installed
upstream of the dryer are draining properly before
attempting to readjust the LED setting.
Inlet Pressure
75
100*
125
150
200
225
125
3
3
3
3
4
4
150
2
3
3
3
3
4
200
2
3
3
3
3
3
250
2
2
2
3
3
3
300
1
2
2
2
3
3
400
1
2
2
3
3
4
500
1
1
2
2
3
3
750
1
1
1
1
2
2
Flow (scfm)
Table 2 LED Legend
* Recommended and pre-programmed factory settings for each dryer. Assumes
CAGI ADF100 inlet conditions with 100
°
F ambient and 10
°
F air-cooled aftercooler
approach temperature.
Minutes
LED
between
Illuminated
Drain Cycles
1
st
1
2
nd
3
3
rd
5
4
th
10
5
th
20
6
th
30
7
th
40
8
th
50
9
th
60
33 F......................39 F
1 C.......................4 C
2.4 Timer Drain Programming Mode
1.
Press the “Drain Interval Program” button (the
“Condensate Draining” LED will start to flash, and the
illuminated LED on the “Dew Point Temperature
Indicator” will identify the factory setting for “Minutes
Between Drain Cycles.” (See Table 1)
2.
Press and release the “Drain Interval Selector” button
to sequence the “Minutes Between Drain Cycle LED’s”
from left to right until reaching your selection. The
“Red” LED is not used (Reference Table 2 for “Drain
Cycle Intervals”)
3.
To initiate the new setting, press the “Drain Interval
Program” button (this will store the new setting and
exit the program).
4.
Exiting the Program will cause the Timer Drain to
discharge and begin a new cycle.
NOTE: Failure to perform step 3 within 25 seconds of
completing step 2 will cause the unit to revert back to the
previous setting.
NOTE: In the event of a brief or extended period of
power loss, the unit will retain the existing program
setting and will begin a new cycle once power is
reapplied. Had drain been ready to drain before the loss
of power, the drain bowl’s capacity would prevent
downstream flooding. Condensate will drain completely
within a couple of cycles. (Manually pressing the “Push-to-
Test” button would drain bowl immediately)
2.5 Operating check points
Check the following on a periodic basis:
A. Green power on light is illuminated.
B. Dewpoint indicator is in green area.
C. Condensate is discharging from drain.
Condensate Draining
(Flashes in
programming
mode)
Drain Interval
Program
33
33
°
F......................39
......................39
°
F
1
°
C.......................4
°
C
Dew Point
Temperature
Indicator
Drain Interval
Selector
(LED illuminated
indicates drain
cycle setting)
2.
Where the dryer is consistently operating at less
than maximum capacity, it may be possible to
increase the LED set point to minimize air loss.
Discretionary adjustments to the dryer should only
be made on a hot, humid day when the maximum
expected air load is flowing through the dryer.
Failure to do so may prevent the condensate from
draining completely when operating under peak
load conditions.
I - Controller Level 2 - Standard
33
33
°
F......................39
°
F
1
°
C.......................4
°
C
On/Off
Switch
Switch Legend
Power On
Light
Compressor
On Light
Dew Point
Temperature
Indicator
Drain
Push-to-Test
Condensate
Draining
Summary of Contents for CRN Series
Page 19: ...19 NOTES ...
