Ingersoll Rand DXR Serie Manual De Instrucciones página 8

manual if any temperature readout falls outside the nor-
mal range.
Inlet Air Temperature—If the inlet air temperature
falls outside the normal range, the dryer may fail to
achieve the required dew point. Check the compressor
aftercooler and adjust aftercooler operation to ensure
specified inlet air temperature to the dryer.
Refrigerant Suction Temperature—If the dryer has
been operating for more than 20 minutes and the refrig-
erant suction light flashes, there may be a malfunction
in the refrigeration system. Turn the dryer off and have
a refrigeration mechanic identify and correct the mal-
function. If the dryer is under warranty, call your local
distributor for authorization before servicing.
Refrigerant Discharge Temperature—This tempera-
ture is used by service personnel to analyze the perform-
ance of the refrigeration system.
Ambient Air Temperature—If the ambient air tem-
perature falls outside the acceptable range, the dryer
may fail to achieve the required dew point or dryer shut-
down may result due to high refrigerant discharge pres-
sure.
Inlet Condensing Water Temperature (Water-cooled
models) — If the cooling water falls outside the accept-
TEMPERATURE
DIGITAL
DISPLAY
Inlet Air Inlet air piping
Refrigerant line
Refrigerant
upstream of
Suction
compressor
Refrigerant line
Refrigerant
downstream of
Discharge
compressor
Ambient Air Outside the
(Air-Cooled Only) condenser
Inlet Condensing
Inlet pipe of the
Water
condenser
(Water-Cooled Only)
Outside surface
of chiller
Intermediate Air
discharge
piping
a
Normal temperature range is indicated by a 3-second red light. The red light flashes when temperatures are outside the normal range.
Dew points 50°F or higher may cause the REFRIG. SUCTION signal to flash. See the Field Service Guide if red lights flash.
1-6
AIR AND REFRIGERANT TEMPERATURES
PROBE
LOCATION
Inlet air temperature varies with
changes in aftercooler cooling
medium temperature and air
compressor unloading. Inlet
temperatures higher than 100°F
reduce drying capacity.
These refrigerant temperatures vary
with the refrigeration load and are
controlled by refrigeration valve
settings. These readings are used
primarily by service personnel to
analyze refrigeration system
performance.
Ambient air temperatures higher
than 100°F will reduce drying
capacity.
Cooling water temperatures in
excess of 100°F will reduce drying
capacity.
Intermediate air temperature varies
with inlet air pressure, ambient
temperature and airflow. This
reading is used primarily by service
personnel to analyze refrigeration
system performance.
able range, the dryer may fail to achieve the required
dew point or dryer shutdown may result due to high re-
frigerant temperature.
Intermediate Air Temperature
This temperature is used by service personnel to analyze
the performance of the refrigeration system. Intermedi-
ate air temperature is displayed by putting monitor in
Scan mode then pushing and holding down the TIME
ADJUST and CLOSED/OPEN buttons simultaneously
for three seconds. The intermediate air temperature will
be displayed for 5 seconds. The digital display will then
return to its last temperature readout.
Intermediate air temperature varies with operating con-
ditions and ambient air temperature. Table 5 lists ap-
proximate normal ranges of this temperature at various
inlet flows and dew point classes.
Table 4
COMMENTS
NORMAL WARNING
TEMPERATURE SET
a
RANGE POINT
40°F – 120°F >115°F
32°F – 55°F N.A.
140°F – 240°F N.A.
> 115°F/
35°F – 120°F
< 35°F
> 115°F/
35°F – 120°F
< 35°F
Variable;
N.A.
see Table 5
DXR Series Dryers (Bulletin 553)
ALARM
SET
POINT
>120°F
25°F
N.A.
> 120°F/
< 35°F
> 120°F/
< 35°F
N.A.