Champion CRN75 - User Manual

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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

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

Models: CRN25, CRN35, CRN50,

CRN75, CRN100

Table of Contents

Questions and Answers

H
hortondanielleAug 6, 2025
What to do if my Champion Dehumidifier refrigeration system is not functioning properly?
- O
  oscarmooreAug 6, 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.
M
Mary HamiltonAug 16, 2025
What to do if there is a high pressure drop across my Champion CRN75?
- J
  Jodi ValenzuelaAug 16, 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).
J
Jennifer BellAug 21, 2025
What to do if the dew point indicator is in the red area on my Champion Dehumidifier?
- R
  Rachel JohnsonAug 22, 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.
L
lisa54Aug 31, 2025
Why is the refrigeration system not functioning properly in my Champion Dehumidifier?
- J
  Jeremy MuellerAug 31, 2025
  If the refrigeration system in your Champion Dehumidifier isn't working correctly, start by checking the unit's power supply. If the compressor cycles on and off, ensure the disconnect switch is closed. An electrician should inspect the electrical connections if there's a power failure, a line disconnect switch is open, there are blown fuses, an open breaker, or faulty wiring and loose terminals. Also check the minimum and maximum temperature ranges. Clean the condenser and ensure free airflow, considering high or low ambient conditions, dirty or clogged condenser fins, obstructed airflow across the condenser, or a non-functioning fan motor or fan control switch.
D
Dennis SantanaNov 10, 2025
Why is there water downstream of my Champion CRN75?
- C
  colonkimberlyNov 10, 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...
A
Amanda AguilarNov 25, 2025
What to do if there is water downstream of the Champion Dehumidifier?
- A
  alexandra69Nov 25, 2025
  If you find water downstream of your Champion Dehumidifier, several issues could be the cause. Start by blowing out the system with dry air to remove any residual moisture in the pipelines. Check the valve positions to ensure the air bypass system is not open. Verify that the inlet and outlet connections are correctly connected. If temperatures around the downstream air lines have dropped below the dryer's dew point rating, insulate or heat trace those lines. Ensure there isn't excessive free moisture at the dryer inlet; if so, install a separator ahead of the dryer. Check the drain mechanism for clogs and replace it if it's inoperative. Clear any restrictions or freezing in the drain line. For electric drains, reset the timer to ensure sufficient condensate removal. Also, check the inlet ...

Summary

General Safety and Handling

Safety Precautions

Key safety guidelines for pressurized devices, electrical, and breathing air.

Equipment Handling and Storage

Procedures for receiving, unpacking, moving, and storing the equipment.

Installation

Location, Mounting, and Piping

Guidelines for selecting a site, mounting, and connecting piping for the dryer.

Electrical Connections

How to connect the dryer to the electrical power supply.

Moisture Separator

Information on the internal drain and operation of the moisture separator.

Operation and Controls

Operating Conditions

Minimum and maximum inlet air pressure, temperature, and ambient conditions.

Start-up Procedure

Steps to safely start and energize the dryer.

Timer Drain Operation

Information on timer drain option, programming, and function.

Operating Checks

Periodic checks to ensure the dryer is functioning correctly.

Maintenance

Condenser Coil Cleaning

Instructions for cleaning the condenser coil.

Separator and Filter Maintenance

Guidance on checking and replacing the moisture separator and oil removal filter.

Drain Mechanism Servicing

Recommendations for replacing or rebuilding the drain mechanism.

Sizing and Capacity

Determining Dryer Capacity

How to calculate dryer capacity based on operating conditions using multipliers.

Engineering Data

Electrical Schematic

Schematic Diagrams

Wiring diagrams for different voltage/frequency models.

Optional Notes

Explanations for specific components and features in the schematics.

Dimensions and Weights

Troubleshooting Guide

Water Downstream of Dryer

Diagnosing and correcting water in air lines.

High Pressure Drop

Troubleshooting high pressure drop across the dryer.

Dew Point Indicator in Red

Issues related to the dew point indicator showing an abnormal reading.

Refrigeration System Malfunctions

Addressing issues with the compressor and refrigeration cycles.

Parts List

Warranty Information

Warranty Period and Service

Details on warranty duration, coverage, and service authorization.

Champion CRN75 Specifications

General

Brand	Champion
Model	CRN75
Category	Dehumidifier
Language	English

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