|
|
|
|
Item # RNC400, RNC Series - Refrigerated Air Dryers (10–3000 scfm)
|
|
|
|
|
|
Global Air Treatment
RNC Series refrigerated air dryers are engineered to benefit you today and tomorrow from the tradition of durability that is Gardner Denver.
Quality components and engineering excellence meld to ensure you of a stable 38°F +/-4°F
pressure dew point. These exclusive compressed air preparation packages combine reliability, cutting-edge design, and innovative packaging into a single space saving unit. The air quality delivered from an RNC Series dryer may define the difference between moderate and superior results from your plant’s processes or systems.
RNC Series dryers benefit you with:
1. Four levels of Intelligence Controller (I-Controller) packages to allow you to
customize the RNC Series dryers to meet your specific requirements.
2. Select Heat Exchanger arrangements to ensure you get the right combination
of value and efficiency in every size.
This secures your investment today and tomorrow with energy efficiency.
3. Combination Separator/Filter that incorporates our 99% efficient 3 micron
Grade B elements. This ensures you of consistent water removal (especially under low flow conditions).
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
The flexibility engineered into every RNC Series dryer allows
you to satisfy your air quality requirements with a single
package. Enlist us to deliver the dew point stability, air
quality, energy efficiency, and product reliability that you
expect from Gardner Denver.
ISO 8573.1 Air Quality Classes
1992 earmarked the year the International Organization for
Standardization (ISO) established ISO 8573.1 as the
global benchmark for evaluating the quality of compressed
air. Thus, providing engineers with a universally accepted
unit of measure for quantifying compressed air stream
contaminants. Namely Solid Particulates, Moisture, and Oil.
|
|
|
|
Package Design
At first glance, the ruggedness and ease of serviceability engineered into RNC Series
becomes apparent. Fabricated from solid steel, the corrosion resistant epoxy powder
paint and the fit and finish of the cabinet, foretell of the quality to be found within. At
the touch of a button, quick fasteners release each lift out door panel. Easy interior
access and user-friendly serviceability translate to reduced maintenance costs.
Proven Performance
All models use reliable refrigeration compressors and environmentally friendly
refrigerants. Models through RNC750 use proven reciprocating refrigeration
compressors and R-134a refrigerant. RNC1000 through RNC3000 incorporate rugged
scroll compressors and R-404a refrigerant. You benefit from long component life,
and exceptional around-the-clock performance.
Heat Transfer
RNC 10–15 models have the patented static condenser technology that eliminates
the need for a cooling fan. These models include an on/off switch, longer power cord
(8 ft), a timer operated drain valve with isolation valve on RNC, a float trap on RNC,
and deliver heated outlet air to eliminate sweaty piping.
RNC models 25–75 benefit from our smooth handcrafted all copper heat exchangers.
Only large bore multiple tubes-in-tube designs efficiently split the airflow to achieve
the low pressure drop, high heat transfer.
RNC Series models 100–3000 incorporate heat exchangers crafted from
multiple offset layers of press formed AISI 316 stainless steel. Press
forming creates peaks and valleys that form media channels that
are rich in fluid turbulence. This prevents fouling and maximizes
energy efficiency.
Maximum Extraction Separator/ Filter
Effective moisture removal at all flow rates is the key to preserve dew
point stability. RNC25 and larger includes Grade B two-stage cold
filtration to ensure maximum water extraction even under low flow
conditions. Stage one mechanically entraps solids >10 microns with dual
stainless steel orifice tubes. Stage two utilizes in-depth fiber media to
coalesce water droplets and retain solid particles 3 microns and larger.
Get Connected
The extended inlet/outlet connections on RNC dryers (RNC25–RNC750)
were engineered with foresight to readily accept all FIL Series Filters
without the need for cumbersome adaptors and fittings. RNC/1000 -
3000 inlet/outlet connections are on top of unit for ease of installation.
You gain the installation flexibility you need today that may help you be
prepared to meet the changes of tomorrow.
|
|
|
|
RNC Series dryers are equipped with control schemes that are designed to provide you
with the most value delivered within each flow range. Engineered with industry leading
features, each I-Controller package provides just the right level of benefits to appeal to
the most demanding applications and discriminating customers.
Instrumentation
Power-on LED and 6 foot grounded power cord are standard on all single-phase 115-volt
units. Easy view angular instrumentation panels prominently display all I-Controllers
instrumentation packages.
I-Controller Level 1
Standard equipment on models RNC25 through RNC100 includes: “Power-on” LED,
“Compressor-on” LED, On/Off rocker switch, dew point bar graph LED display and,
pneumatic pilot-operated drain trap. Easy view angular panel.
I-Controller Level 2
Standard equipment on models RNC125 through RNC750 includes: “Power-on” LED,
“Compressor-on” LED, On/Off rocker switch, dew point bar graph LED display. Timed
solenoid drain trap with push-to-test button and secondary manual drains complete
with by-pass valves and drain lines are standard equipment. This helps keep the
surrounding area clean and dry and helps you avoid having to shutdown the dryer during
drain valve maintenance. Upgrade to I-Controller Level 2 optional on RNC25 - RNC100.
Easy view angular panel.
I-Controller Level 3
Optional equipment on models RNC200 through RNC750 includes: LED indicated process
diagram, remote start/stop, compressor run time, °F/°C selectable temperature readings
for Inlet Air, Dew Point, and Ambient Air. Vivid yellow LED to advise when scheduled
maintenance is due, and warn if high ambient or inlet air temperatures warrant attention.
Alarm Mode triggers a bright red LED, initializes alarm relay and full text displays fault
condition. Downloadable memory stores details of the last 10 alarm events (e.g., date,
time, fault.) English, Spanish, French language selectable. Demand Drain with push-to-test
button and secondary manual drains complete with by-pass valves and drain lines
are standard equipment. This helps keep the surrounding area clean and dry and helps
you avoid having to shutdown the dryer during drain valve maintenance. Easy view
angular panel.
I-Controller Level 4
Standard equipment on models RNC1000 through RNC3000 includes: manual mode,
schedule mode to synchronize operation to your workday, auto restart, text display
window that displays current time, operating mode, total operating hours, hours to
service, dew point bar graph LED display, compressor-on light, power-on light, temperature
indicator, alarm/service light, reset button, set/run button, programming buttons, on/off
button, drain push-to-test button, English, Spanish, German, French and Italian language
selectable, RS-232 communication capable, fault condition diagnostics with text display,
dry contacts for high dewpoint remote alarm at 55°F. Easy view angular panel.
|
|
|
|
RNC Series dryers enlist proven components and modern materials to deliver the durability you expect from Gardner
Denver. Hot, moist incoming compressed air enters the Precooler/Reheater (1) where it is precooled by the cold
dehydrated airstream. Environmentally friendly low-pressure refrigerant gas is pressurized in the refrigeration
compressor (2) Once compressed into a high-pressure gas, it then flows through the condenser (3) and changes to
a cold 35°F liquid. The thermal expansion valve (4) precisely meters the cold liquid refrigerant into the evaporator
(5) where the work is done. Hot, saturated compressed air enters the evaporator at the end opposite the incoming
liquid refrigerant. The compressed air is chilled as they cross paths. Water is condensed out of the cold exiting air
and is efficiently removed in the Separator/3 micron Filter (6). The cold air stream then flows through (7) the Cold
Coalescing Oil Removal Filter (optional on models RNC25–RNC3000) where oil droplets and aerosols to 0.008 ppm
w/w are captured and removed. The exiting cold, dry compressed air then reenters the Precooler/Reheater (1) where
it is reheated by the hot incoming air to prevent pipe sweating in your plant. Finally, the warm refrigerant is now a
low-pressure gas and returns to the suction-side (8) of the refrigeration compressor to continue the process.
RNC 10–15
Warm saturated air enters the Evaporator (A), where it is cooled by an air-to-refrigerant process. Water vapor
condenses into a liquid for removal at the moisture separator (B) by an Automatic Drain (C). The cold, dry air
is reheated as it passes through the Reheater (D) while the patented Static Condenser (E) radiates waste heat
to ambient. This eliminates the need for a cooling fan and prevents pipeline sweating at the air outlet.
A Constant Pressure (F) Expansion Valve (CPEV) modulates the flow of liquid refrigeration to the Evaporator
(A). This eliminates freeze-ups and assures continuous, automatic dew point control. The CPEV responds to
pressure changes as the refrigerant leaves the Evaporator. This maintains the proper cooling rate under all
load conditions. The CPEV is adjusted at the factory to deliver automatic operation.
|
|
|
|
Power-on LED and 6 foot grounded power cord are standard on all single-phase 115-volt units. Easy view angular
instrumentation panels prominently display all I-Controllers instrumentation packages.
Oil Removal… this option integrates our factory installed Grade E Cold Coalescing Oil Removal
Filter. Oil droplets and aerosols are extracted from the air stream in cleaning it down to
0.008 ppm w/w and solids are retained down to 0.01 micron. RNC Series dryers that include
the Cold Coalescing Oil Removal Filter option are also equipped with a dedicated drain trap.
Drain trap is consistent with the type provided with your chosen I-Controller. Available on
models RNC25–RNC3000
Low Ambient… this option protects the dryer from internal damage due to freezing
temperatures down to -10°F. Factory installed package includes heat tracing, thermostat
and insulation for the separator bowl.
Gauges… four panel mounted gauges: air inlet temperature, air outlet pressure,
refrigerant suction pressure and refrigerant head pressure.
Dry Contacts… remote bulb temperature switch with”C”-Form contacts; mounted
inside cabinet.
Air-Bypass Piping… Three valve block and bypass; mounts to inlet/outlet
connections; shipped loose. MWP 200psig
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
