Automatic Drain Valves - Ingersoll-Rand DXR Series Operator's Instruction Manual

INTERMEDIATE AIR TEMPERATURE
DRYER INLET APPROXIMATE NORMAL RANGE
AIRFLOW
33°F - 39°F
(% of rated
Dew Point
capacity)
80 - 100 35°F - 45°F
50 - 79 45°F - 55°F
25 - 49 55°F - 65°F
10 - 24 65°F - 75°F
No airflow 75°F - 100°F
a
Based on 90°F - 100°F dryer inlet air temperature and 100°F ambient
air temperature. These ranges are approximate and may vary with
changes in inlet air pressure, ambient temperature and inlet airflow.
RS-232 Serial Port
The RS-232 serial communications port allows for mon-
itoring of current temperature and error flags. Commu-
nication is via a series of ASCII characters sent every
second. The data format is shown below. The baud rate
is 4800, 8 bits, no parity.
Message format:
DS version:
•
:Ixxx,Sxxx,Dxxx,Axxx,Oxxx,Nxxx,Lyy,Syy<cr><lf>
Where:
• ":" = colon character
• "," = comma character
• <cr> = carriage return
• <lf> = line feed
• xxx = temperature in BCD, leading zeros are sup-
pressed (replaced with spaces. Out-of-range val-
ues are displayed as "---".)
• yy = alarm bits in ASCII HEX format
Each numerical temperature value is preceded with a
single alphabetic identifier:
• I = Inlet air
• S = Suction
• D = Discharge
• W = Water*
• A = Ambient*
• O = Operation
• G = Glycol**
• N = Intermediate**
* Water or Ambient is displayed, based on ver-
sion.
DXR Series Dryers (Bulletin 553)
Table 5
50° - 54°F
Dew Point
50°F - 60°F
60°F - 70°F
70°F - 80°F
80°F - 90°F
90°F - 100°F
** Intermediate or Glycol is displayed, based on
version.
a
The alarm bits are preceded with either:
• L = Alarm bits
• S = Service Due indication
The HEX characters that follow "L" or "S" convey an
eight-bit field which indicates the source of the alarm or
service due indicator. A value of all zeros (0x00) indi-
cates that no alarm or service due condition exists.
Version
DS
1
svc = > 4500 hours operating time
Remote Alarm Contacts (Optional)
Dry (unpowered) contacts including one normally open
set and one normally closed set are provided to signal
remote indication if the CHECK OPERATING CON-
DITIONS or SYSTEM ALARM indicators are acti-
vated. The contacts are 2½ Amps max., unfused and
120/240 VAC max.

AUTOMATIC DRAIN VALVES

All dryers are equipped with an electronic drain valve
that automatically discharges condensate from the dryer.
Drain valve controls are on the system operation moni-
tor. The ADV controls allow the period of drain open-
ing to be set from 1 second to 10 seconds and the drain
closed (cycle) time to be set from 0.5 minutes to 10
minutes. A test push button helps to check ADV opera-
tion. When the button is pushed, the drain port clicks
open with a clearly audible sound.
To set the drain closed (cycle) time:
The monitor must be in the Scan mode. Press the
CLOSED/OPEN button once. The display will show the
current setting for the ADV closed time.
Press and hold the TIME ADJUST button. Release the
button when the display reads the desired time. The se-
lected time will be locked into memory.
To set the drain open time:
The monitor must be in the Scan mode. If monitor is not
already in the mode for adjusting drain closed time,
slowly push the CLOSED/OPEN button once. Allow a
few seconds for monitor to set up, then push the button
a second time. The display will show the current setting
for the ADV open time.
Program
inlet
1-7