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Cod. 710.0201.01.00 Rev.01 

– 05.2022 

© Copyright 2022 OMI Srl - All rights reserved

 

7 - 11 

 

 

 

3.1.4  REMOTE SIGNALING ALARM 

 

 

 

The dryer control board is equipped with a dry contact for a remote alarm signal. This is normally open 
contact: when an alarm is detected, this contact is closed. 
Proceed as follows to activate a remote alarm output: 

1.  The User must review the diagram below. 
2.  Disconnect the dryer from electrical power supply, remove cover and left side panel. 
3.  Connect the alarm circuit to the terminal blocks (See PIC.2). 

4. 

Replace cover, left side panel and reconnect power.

 

Alarm Output relays electric features: 

Max. 250VAC / 3A 

– AC 15 (Amp. Inductive) 

PIC.2

 

 

The activation of the above function is at the User’s discretion. The User will purchase all necessary installation material. 
Any operation which needs access to the dryer must be carried out by qualified personnel. 

 

3.2 BEFORE START UP 

 

 

 

Before starting the machine, make sure that all operating parameters correspond to the nominal data. 
The dryer is supplied already tested and preset for normal operation, 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 performed after the first start up and at each start up after a prolonged inactive 
period of time due to maintenance operations, or any other reason. 

1.  Make  sure that  all  instructions  contained  in  chapters  INSTALLATION  SITE  and  INSTALLATION  have  been 

observed. 

2.  Ensure dryer by-pass is open and air inlet/outlet valves closed. (if existing). 

3.  Activate power supply and press  the ON/OFF switch on the control panel for at least 1 second. 

(note there is a 2 minute delay before the dryer will start after the dryer is turned on). 

4.  Wait 5 to 10 minutes until machine has achieved its standard operating parameters. 

5.  Slowly open the air outlet valve and successively open the air inlet valve. 

6.  If existent, close the air by-pass valve. 

7.  Check if the condensate drain is working properly. 

8.  Check if all connecting pipes are properly tightened and fixed. 

Before disconnecting the dryer from electrical power supply, use ON/OFF switch to stop the dryer. Otherwise wait 10 
minutes before switching the dryer on again, in order to allow freon pressure to rebalance. 

 

 

 

Summary of Contents for ED108 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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