omi DD72 - User Manual

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Cod. 710.0167.01.00 Rev02 – 10.2019 © Copyright 2019 OMI Srl - All rights reserved 1 - 11

DIRECT EXPANSION COMPRESSED AIR DRYERS

Operators Manual

DD36

DD54

DD72

DD108

DD144

DD180

DD216

DD280

DD340

DD500

DD610

DD750

DD1000

DD1300

Questions and Answers

J
Jeremy ReedAug 22, 2025
Why is the pressure in the line low on my OMI Dehumidifier?
- A
  Amber SimpsonAug 22, 2025
  If the pressure in the line of your OMI Dehumidifier is low, check for ice formation in the evaporator and inspect the electronic control board; replace if necessary. It is also recommended to check the gas charge by contacting our Service Centre. Ensure the compressed air inlet/outlet is connected properly, and that the connecting tubing is not clogged. Verify that all valves are open and check the condition of any filters. If air flows continuously through the condensate drainage, clean or replace the drainage solenoid valve. Verify the condensate drainage times set on the electronic control board (C8 and C9). Check the signal from the control board, and if it is continuous, replace the control board.
P
pyoungNov 6, 2025
What to do if there is water in my OMI Dehumidifier system?
- C
  Courtney Guerrero DDSNov 6, 2025
  If there is water in the OMI Dehumidifier system, several issues could be the cause. First, ensure that there is power in the line. If phases are connected incorrectly, correct them. Check the cabling and the electronic control board, and replace if necessary. Make sure the dryer is on and not in standby mode (wait 2 minutes after switching on). Verify that the compressed air inlet/outlet is connected properly, and that the air flow rate, temperature, and ambient temperature are within nominal values. Clean the condenser and the condensate drainage system filter mesh. Check the temperature control probe and replace if faulty. Reset the high pressure switch. If the compressor’s internal thermal protection has activated, wait one hour and check again; otherwise, contact your local OMI distri...

Summary

General Information

Functional Description

Explains how OMI refrigerated air dryers remove moisture from compressed air using a two-stage cooling process.

Use of the Machine in Safe Conditions

Provides essential safety rules and precautions for installation, use, and maintenance of the dryer.

Installation

Acceptance and Handling

Instructions for inspecting the dryer upon receipt and handling it correctly to prevent damage.

Storage and Installation Location

Guidelines for choosing a suitable installation site and proper storage conditions.

Unpacking

Procedure for safely unpacking the dryer and its components.

Installation

Details on connecting the dryer to air lines, electrical supply, and drainage systems.

Start Up

Control Panel

Overview of the dryer's electronic control system, including keys, display, and signaling LEDs.

Keys Function

Explains the function of each button (ON/OFF, TEST, SET, DOWN, UP) on the control panel.

Condensate Discharge Parameters Programming

Guide for programming delay and duration for condensate discharges.

Display Indications

Details on error messages and their causes displayed on the control panel.

Remote Signaling Alarm (Optional)

Instructions for activating and connecting the optional remote alarm output.

Before Start Up

Checks and preparations required before the initial start-up of the dryer.

Start Up

Step-by-step procedure for starting the dryer after initial installation or prolonged inactivity.

Maintenance, Troubleshooting and Decommissioning

Maintenance

Scheduled maintenance tasks and intervals for ensuring optimal dryer performance.

Troubleshooting

Identifies common problems, possible causes, and remedies for dryer malfunctions.

Decommissioning

Procedures for safely shutting down and preparing the dryer for disposal or relocation.

Safety Information

General Safety Instruction

Provides essential safety information and directives relevant to the dryer's design and operation.

Equipment Nameplate Values

Details technical specifications and safety device settings from the equipment's nameplate.

Information About Remaining Risks of the Equipment

Highlights potential risks such as fire, refrigerant dispersion, and excessive pressure.

omi DD72 Specifications

General

Brand	omi
Model	DD72
Category	Dehumidifier
Language	English

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