Champion CRN25, CRN50, CRN35, CRN75, CRN100 Instruction Manual
SERVICE DEPARTMENT: (724) 746-1100
CRN SERIES
REFRIGERATED
COMPRESSED
AIR DRYERS
INSTRUCTION MANUAL
7610.721.73 1/04
CA18-2-645, 1st Ed.
7610.478.39/040103
INTERNAL USE ONLY
Models: CRN25, CRN35, CRN50,
CRN75, CRN100
®
CONTENTS
GENERAL SAFETY INFORMATION ............................2
RECEIVING, MOVING, UNPACKING ..........................2
1.0 INSTALLATION ...................................................3
2.0 OPERATION.......................................................4
3.0 MAINTENANCE .................................................6
SIZING ......................................................................6
ENGINEERING DATA.................................................7
ELECTRICAL SCHEMATICS ........................................8
DIMENSIONS / WEIGHTS..........................................9
TROUBLESHOOTING...............................................10
PARTS LIST............................................................. 11
WARRANTY............................................................12
GENERAL SAFETY INFORMATION
RECEIVING, MOVING, AND UNPACKING
1. PRESSURIZED DEVICES:
This equipment is a pressure
containing device.
• Do not exceed maximum operating
pressure as shown on equipment serial
number tag.
• Make sure equipment is depressurized before
working on or disassembling it for service.
2. ELECTRICAL:
This equipment requires electricity
to operate.
• Install equipment in compliance
with all applicable electrical codes.
• Standard equipment is supplied with electrical
enclosures not intended for installation in
hazardous environments.
• Disconnect power supply to equipment when
performing any electrical service work.
3. BREATHING AIR:
• Air treated by this equipment
may not be suitable for breathing
without further purification.
Refer to applicable standards and
specifications for the requirements for breathing
quality air.
A. RECEIVING
This shipment has been thoroughly checked, packed
and inspected before leaving our plant. It was received in good condition by the carrier and was so
acknowledged.
Check for Visible Loss or Damage. If this shipment
shows evidence of loss or damage at time of delivery
to you, insist that a notation of this loss or damage
be made on the delivery receipt by the carrier’s
agent.
B. UNPACKING
Check for Concealed Loss or Damage. When a shipment has been delivered to you in apparent good
order, but concealed damage is found upon unpacking, notify the carrier immediately and insist on his
agent inspecting the shipment. Concealed damage
claims are not our responsibility as our terms are
F.O.B. point of shipment.
C. MOVING
In moving or transporting dryer, do not tip dryer onto
its side.
D. STORAGE/SHUT DOWN
Dryer should not be stored outside (either
packed or unpacked) or exposed to the weather. Damage
to electrical and control components may result.
IMPORTANT: Do not store dryer in temperatures above
130°F, 54.4°C.
2
IMPORTANT:
READ PRIOR TO STARTING THIS EQUIPMENT
1.0 INSTALLATION
1.1 Location
A. For typical placement in a compressed air system, see
drawing.
B. Air compressor intake–Locate air compressor so that
contaminants potentially harmful to the dryer (e.g.
ammonia) are not drawn into the air system.
C. Dryer should be installed in a moderately heated, well
ventilated area. Avoid locations immediately adjacent
to cold exterior windows or walls, or adjacent to high
temperature ovens or boilers.
D. Clearances: Minimum requirements for free air flow
and service access
Flows 25 to 100 scfm:
Front 24 inches (610 mm)
Back 24 inches (610 mm)
Sides 12 inches (305 mm)
E. Standard units are designed to operate in ambients:
Air-cooled: 45 to 110°F (7 to 43°C).
Water-cooled: 45 to 130°F (7 to 54°C).
F. Installations in altitudes above 4500 feet (1370
meters) – Dryer is adjusted to operate in altitudes up
to 4500 feet (1370 meters). If dryer is installed in an
altitude above this, and has not been preset at the
factory for this altitude, contact manufacturer’s
Service Department.
NOTE: Outdoor installation–Standard units are designed
for indoor installation. Contact manufacturer if installing
outdoors.
1.2 Mounting
Mount the dryer on a level solid surface. Holes are
provided in the dryer base to permanently mount the
dryer to the floor.
Compressor
Aftercooler
Separator
Dryer
Oil Removal
Filter
1.3 Piping connections
A. Air Inlet - Connect compressed air line from air
source to air inlet. (See callout drawing on page 3 for
air in/outlet connection locations)
Refer to Serial Number Tag for maximum
working pressure. Do not exceed dryer’s Maximum
Working Pressure.
NOTE:
Install dryer in air system at highest pressure possible
(e.g. before pressure reducing valves).
NOTE:
Install dryer at coolest compressed air temperature
possible. Maximum inlet compressed air temperature:
110°F (43°C). If inlet air exceeds this temperature, precool
the air with an aftercooler.
B. Air Outlet—Connect air outlet to downstream
air lines.
On/Off Switch
Power On-Light
Compressor On-Light
Dew point Temperature Indicator
Separator/Filter
Optional
Cold Coalescing
Filter
C. By-pass piping—
If servicing the dryer without interrupting the
air supply is desired, piping should include
inlet and outlet valves and an air by-pass valve.
Air Outlet
Air Inlet
Power Cord
Air Flow
Drain
3
1.4 Electrical connections
......................39
.......................4
2.0 Operation
A. Dryer is designed to operate on the voltage, phase,
and frequency listed on the serial number tag.
B. If dryer is supplied with a cord and plug, install in a
receptacle of proper voltage.
NOTE:
Refrigeration condensing unit is designed to run continuously and should NOT be wired to cycle on/off with the air
compressor. Excessive cycling of the refrigeration system
could lead to premature failure and void the warranty.
1.5 Moisture separator
A. Separator (and Oil Removal Filter where applicable) has
an internal drain which automatically discharges
collected condensate. It may be desirable to pipe the
condensate from the Automatic Drain outlet to a
suitable drain.
NOTE:
Discharge is at system pressure. Drain line should be
anchored.
2.1 Minimum/Maximum operating conditions
A. Maximum inlet air pressure: refer to dryer serial
number tag
B. Minimum inlet air pressure: 30 psig (2.1 kgf/cm
C. Maximum inlet air temperature: 110°F (43°C)
D. Maximum ambient temperature:
Air-cooled models: 110°F (43°C)
Water-cooled models: 130°F (54°C)
E. Minimum ambient temperature: 45°F (7°C)
I - Controller Level 1 - Standard
On/Off
Switch
Switch
Legend
Power On
Light
Compressor
On Light
33°F......................39°F
1°C.......................4°C
Dew point
Temperature
Indicator
2
)
NOTE:
Condensate may contain oil. Comply with applicable laws
concerning proper disposal.
B. I -Controller Level 1 ONLY:
Separator has a knurled fitting with flexible drain
tubing attached. Be sure knurled fitting is tightened
by turning it counter-clockwise before operating
dryer.
TO CLOSE
TURN COUNTERCLOCKWISE
OptionaI Controller
On/Off
Switch
Switch Legend
Power On
Light
Compressor On
Light
3333°F......................39
°F
°C
1°C.......................4
Dew point
Temperature
Indicator
Push-to-Test
Condensate
Drain
Draining
4
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