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Cod. 710.0201.01.00 Rev.01 

– 05.2022 

© Copyright 2022 OMI Srl - All rights reserved

 

3 - 11 

 

 

 

 

 

 

 

 

1.  Only qualified personnel shall be permitted to adjust, perform maintenance or repair this air dryer. 

2.  Read all instructions completely before operating unit. 

3.  Pull main electrical disconnect switch and disconnect any separate control lines, if used, before attempting to work 

or perform maintenance on the unit. 

4.  Do not attempt to service any part while machine is in an operational mode. 

5.  Do not attempt to remove any parts without first relieving the entire air system of pressure. 

6.  Do  not  attempt  to  remove  any  part  of  the  refrigeration  system  without  removing  and  containing  refrigerant  in 

accordance with the EPA and local regulations. 

7.  Do not operate the dryer at pressures in excess of its rating. 

8.  Do not operate the dryer without guards, shields and screen in place. 

9.  Inspect unit daily to observe and correct any unsafe operating conditions. 

2. INSTALLATION 

2.1 ACCEPTANCE  AND HANDLING 

Upon receiving your OMI air dryer, please inspect the unit closely. If rough handling is detected, please note it on your delivery receipt, 
especially if the dryer will not be uncrated immediately. Then obtain the freight carrier's signed agreement to any noted damages:  this 
is a precondition for any insurance claims by the customer. 

It is mandatory to keep the dryer always in vertical position, as indicated by the symbols present on the packaging. For handling, use 
devices having sufficient capacity for the weight of the machine. 

Remove the packaging after having positioned the dryer in the installation site. For unpacking, refer to section 2.3. 

Under no circumstances should any person attempt to lift heavy objects without proper lifting equipment (i.e., crane, hoist, slings or fork 
truck). Lifting any unit without proper lifting equipment, may cause serious injury. Use fork lift channels where provided. 

2.2 STORAGE AND INSTALLATION LOCATION 

If not in use, the dryer can be stored in its packaging in a dust free and protected site between 32°F (0°C) and 120 °F (50 °C), and a 
specific humidity not exceeding 90 %. Should the stocking time exceed 12 months, please contact your local OMI authorized distributor. 

 

 

If the dryer is not used, it will be placed in a site with the following conditions: 

 

 

The machine must be protected from atmospheric agents and not directly exposed to sun light. 

 

A seating base flat and capable to hold the weight of the machine. 

 

Ambient temperature complying with the nominal data of the dryer. 

 

The dryer should be located in a clean area, without forced air draft that can affect the fan control system. 

 

Make sure to leave sufficient clearance (20 inches, 500 mm) around the dryer in order to allow an adequate cooling 
of the machine and for maintenance and/or control operations. 

 

The incoming air must be free from smoke or flammable vapours which could lead to explosion or fire risks. 

2.3 UNPACKING 

The packaging is made of carton or of cellophane. We recommend that you keep the original packaging for the device in case it has to 
be transported to another location or sent to a service center. Dispose the various packaging materials in compliance with the relevant 
rules locally in force. 

 

 

unpack the device, removing the strapping from the carton. Always wear safety gloves when using scissors or other tools to cut 
the straps or the cellophane; 

 

remove the carton or the cellophane; 

 

in case it’s necessary another handling of the device, refer to section 2.1; 

 

remove the pallet (if present); 

 

remove the operating manual, accessories and key from the device. 

 

 

 

 

 

Summary of Contents for ED88 HP45

Page 1: ...Cod 710 0201 01 00 Rev 01 05 2022 Copyright 2022 OMI Srl All rights reserved 1 11 DIRECT EXPANSION COMPRESSED AIR DRYERS Operators Manual ED HP45 88 108 180 225 270 360 480 660 990 1200...

Page 2: ...Cod 710 0201 01 00 Rev 01 05 2022 Copyright 2022 OMI Srl All rights reserved 1 11...

Page 3: ...te discharge parameters programming 6 3 1 3 Anomaly warning 6 3 1 4 Remote signalling alarm 7 3 2 Before start up 7 3 3 Start up 7 4 MAINTENANCE TROUBLESHOOTING AND DISMANTLING 4 1 Maintenance 8 4 2 T...

Page 4: ...Cod 710 0201 01 00 Rev 01 05 2022 Copyright 2022 OMI Srl All rights reserved 3 11...

Page 5: ...electric shock Condensate drain point Rotation direction of the fan Pay particular attention to the risk of moving parts Explosion risk Lifting point Don t lift from this point Attention Before perfor...

Page 6: ...rs counterflow the initial air air exchanger and it is reheated by the inlet hot air with the consequence of energy recovering and also reduction of the relative humidity contained in the outflowing a...

Page 7: ...tempt to lift heavy objects without proper lifting equipment i e crane hoist slings or fork truck Lifting any unit without proper lifting equipment may cause serious injury Use fork lift channels wher...

Page 8: ...it is necessary to install a protective device to protect the equipment at high temperature from the risk of exceeding the maximum allowable temperature The dryer is equipped with a safety valve freo...

Page 9: ...en pushed while setting the drain set point it decreases the displayed value of one unit per second during the first 10 seconds than of one unit every 0 1 sec When pushed for 10 seconds during normal...

Page 10: ...amiliar with the operation of the dryer WARNING FOR USER IT S FORBIDDEN TO ATTEMPT TO MODIFY THE OTHER CONFIGURATION PARAMETERS OF THE ELECTRONIC CONTROLLER WITHOUT AUTHORIZATION AND COLLABORATION OFO...

Page 11: ...eration and it doesn t require any calibration Nevertheless it s necessary to check the operating performances during the first working hours 3 3 START UP The operations specified below must be perfor...

Page 12: ...eck the condition of any filters installed with the dryer Replace elements as needed YEARLY OR EVERY 2000 HOURS OF OPERATION Check if the flexible tube used for condensate drainage is damaged and repl...

Page 13: ...t Problems with cabling or with the electronic control board Check the cabling and the electronic control board if the trouble persists replace them Activation of compressor s internal thermal protect...

Page 14: ...ondensate drainage Drainage solenoid valve jammed clean or replace it Verify the condensate drainage times set on the electronic control board C8 and C9 Check the signal from the control board if it i...

Page 15: ...electricity supply to the dryer and then affix appropriate warning signs to avoid the machine being reconnected to the electricity mains Please consult the contents and the safety instructions in the...

Page 16: ...reset Welding Joints Coefficient z 0 7 Table 5 6 1 Tickness allowance c 0 mm For copper Not required for surfaces in contact with freon EN 14276 1 c 1 mm For carbon steel Manufacturer design code 717...

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