Champion CRN Series - User Manual

Questions and Answers

W
williamsrobinAug 2, 2025
What to do if my Champion CRN refrigeration system is not functioning properly?
- R
  Rachel Huffman DDSAug 2, 2025
  First, ensure the power switch is 'ON'. Check if the line disconnect switch is open and close it if necessary. Inspect fuses and breakers for continuity. Have an electrician check the wiring and terminals for any faults or looseness. Verify that the ambient temperature is within the specified minimum and maximum ranges. Finally, clean the condenser fins and ensure free airflow across the condenser; if the problem continues, contact a qualified refrigeration repairman or the manufacturer’s service department.
C
Catherine AndersonAug 13, 2025
What to do if there is a high pressure drop across my Champion CRN Dehumidifier?
- C
  cobbmarkAug 13, 2025
  A high pressure drop could be due to excessive air flow, so check the flow rate. It could also be caused by freezing of moisture in the evaporator because the refrigeration system is improperly functioning. Another cause could be a clogged separator or an optional oil removal filter element; if this is the case, replace the filter element(s).
V
volsonAug 17, 2025
What to do if the dew point indicator is in the red area on my Champion CRN Dehumidifier?
- J
  Justin ColeAug 17, 2025
  The dew point indicator might be in the red area because the dryer is overloaded, resulting in a high air outlet temperature. It could also be that the refrigeration system is not functioning properly, resulting in a high air outlet temperature. Another possibility is that the temperature sensor is not properly attached, uninsulated, or malfunctioning; in this case, check the sensor bulb.
D
Dwayne DeckerAug 22, 2025
What to do if Champion Dehumidifier refrigeration system is not functioning properly?
- B
  bennettfeliciaAug 22, 2025
  If the refrigeration system isn't working right, first check the power to the unit in case of a power failure. Ensure the switch is turned “ON” and the disconnect switch is closed. Check for continuity and have an electrician inspect the electrical connection. Also, verify that the ambient conditions are within the minimum and maximum temperature ranges. Clean the condenser and ensure there's free airflow. If the issue continues, it's best to contact a qualified refrigeration repairman or the manufacturer’s service department.
K
Katelyn WarrenAug 27, 2025
What to do if there is high pressure drop across Champion Dehumidifier?
- D
  Dean CamachoAug 27, 2025
  If you're experiencing a high-pressure drop across the Champion Dehumidifier, check the flow rate. Additionally, replace the filter element(s).
L
Laura MacdonaldNov 7, 2025
Why is there water downstream of my Champion Dehumidifier?
- A
  Amanda HowardNov 7, 2025
  This can happen due to several reasons. It could be residual free moisture in the downstream pipelines, so try blowing out the system with dry air. The air bypass system might be open, so check the valve positions. Ensure that the inlet and outlet connections are correctly connected. If temperatures surrounding air lines downstream of the dryer have dropped below the dryer’s dew point rating, insulate or heat trace air lines exposed to low ambients or dry air to lower the dew point. If there's excessive free moisture at the dryer inlet, install a separator ahead of the dryer. Check that the condensate is being automatically drained, and if the drain mechanism is clogged or inoperative, replace it, and open the drain line if it's restricted or frozen. If the dryer is overloaded, check the i...

Summary

General Safety Information

1. PRESSURIZED DEVICES

Safety precautions for devices containing pressure.

2. ELECTRICAL

Electrical safety requirements and precautions.

3. BREATHING AIR

Considerations for breathing quality air from the dryer.

Receiving, Moving, and Unpacking

A. RECEIVING

Procedures for checking shipment for visible loss or damage.

B. UNPACKING

Checking for concealed loss or damage upon unpacking.

C. MOVING

Instructions for safely moving or transporting the dryer.

D. STORAGE;SHUT DOWN

Guidelines for storing the dryer and shutdown procedures.

Installation

1.1 Location

Guidance on selecting an appropriate installation location.

1.2 Mounting

Instructions for securely mounting the dryer to a surface.

1.3 Piping connections

Details on connecting air and water lines to the dryer.

A. Air Inlet

Connecting the compressed air line to the dryer's inlet.

B. Air Outlet

Connecting the dryer's outlet to downstream air lines.

D. Water-cooled models - cooling water inlet and outlet

Connecting cooling water supply and return lines for water-cooled units.

Electrical Connections

1.4 Electrical connections

Guidelines for making proper electrical connections to the dryer.

Moisture Separator

1.5 Moisture separator

Information on the moisture separator and its drain.

Operation

2.1 Minimum;Maximum operating conditions

Specifies the acceptable operating limits for the dryer.

2.2 Start-up

Step-by-step guide for safely starting the dryer.

Timer Drain

2.3 Timer Drain

Detailed information on the timer drain function.

2.4 Timer Drain Programming Mode

Procedure for programming the timer drain settings.

2.5 Operating check points

Periodic checks to ensure proper dryer operation.

SURE-SAVE Cooling Injection

2.6 SURE-SAVE Cooling Injection

Description of the SURE-SAVE cooling injection feature.

I-Controller Level 3

VFTD Text Viewing Instructions

How to navigate and view information on the VFTD display.

Programming Instructions

Steps for configuring the I-Controller Level 3 settings.

Start-up Instructions - I-Controller Level 3

Guide for initial startup of the I-Controller Level 3.

Electronic Demand Drain - I-Controller Level 3

2.8 Electronic Demand Drain - I-Controller Level 3

Operation and function of the electronic demand drain.

Operating Instructions - I-Controller Level 3

2. ALARM;ALERT Fault Condition Activation

Understanding and responding to alarm and alert conditions.

3. AUTO RESTART Function

Information on the automatic restart functionality.

4. REMOTE START;STOP Function

Using remote signals to start or stop the dryer.

5. DOWNLOADABLE MEMORY Function

Storing and outputting alarm event data.

6. RS-232 & RS-485 Communications Capable

Capabilities for host computer monitoring.

Maintenance

3.1 Condenser Coil

Cleaning procedures for the condenser coil.

3.2 Moisture Separator;Oil Removal Filter

Servicing the moisture separator and oil removal filter.

Procedure for Separator; Filter Element Replacement 125-500 scfm models

Steps for replacing separator and filter elements for specific models.

Separator; Filter Element Replacement 750 scfm Model

3.3 Check separator daily to be sure automatic drain is discharging.

Daily check of the automatic drain function.

3.4 Blow down separator weekly by pushing test button on control panel.

Weekly procedure to blow down the separator.

3.5 Rebuild drain mechanism annually.

Annual procedure for rebuilding the drain mechanism.

Sizing

TABLE 1

Rated capacity data for different models at standard conditions.

TABLE 2

Air capacity correction factors for various operating conditions.

Engineering Data

Electrical Schematics

Models 125, & 150 - 115 V;60 Hz (I-Controller Level 2)

Electrical schematic for specific models and controller.

Model 125 & 150 - 208-230 V;60 Hz; 220-240 V;50 Hz (I-Controller Level 2)

Electrical schematic for different voltage/frequency models.

Legend

Explanation of symbols used in the electrical schematics.

Electrical Schematics (Continued)

Models 200 thru 750-230-400-460-575 V;3;50-60 Hz (I-Controller Level 2)

Electrical schematic for higher capacity models (Level 2).

Models 200 thru 750-230-400-460-575 V;3;50-60 Hz (I-Controller Level 3)

Electrical schematic for higher capacity models (Level 3).

Dimensions;Weights

Dimensions;Weights (Continued)

Troubleshooting Guide

A. Water downstream of dryer

Diagnosing and correcting water downstream of the dryer.

B. High pressure drop across dryer

Troubleshooting high pressure drop issues.

C. Dew point indicator in red area

Addressing issues when the dew point indicator is red.

D. Refrigeration system not functioning properly

Diagnosing problems with the refrigeration system.

Troubleshooting Guide (I-Controller Level 3)

ALERT AMBIENT TEMP

Troubleshooting high ambient air temperature alerts.

ALERT INLET AIR TEMP

Troubleshooting high inlet air temperature alerts.

ALARM DEW POINT TEMP

Troubleshooting high dew point temperature alarms.

SHUTDOWN LOW PRESSURE

Addressing low compressor suction pressure shutdowns.

SHUTDOWN HIGH PRESSURE

Addressing high compressor discharge pressure shutdowns.

SHUTDOWN MOTOR PROTECT

Troubleshooting compressor motor overload protection.

ALERT MAINTENANCE

Responding to maintenance reminder alerts.

ALARM DRAIN

Troubleshooting condensate drain failure alarms.

Parts List

Warranty