Installation; Start-Up; Maintenance; Weekly - omi ED Series Instruction Manual

Direct expansion compressed air dryers
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4.2 Installation

By-pass piping is recommended to allow uninterrupted air service during maintenance or repair.
By installation check ensure that the compressed air piping is free of deposits or other pollutions.
Always use a back-up wrench to prevent damage to the connections during piping of the air inlet and outlet.
Make sure that line power agrees with the unit data plate and the service complies with local electrical codes.
Always include a fused safety switch (refer to data plate amperage for proper selection).
A particulate filter is recommended before the air inlet. It avoids any deposit of solid particles inside the dryer.
Place the dryer that all controls can easily be read and that all maintenance operations are easily performed.
Attach the fittings & tubing (supplied) to the reservoir overflow connections located on the rear panel of the dryer.
Connect the condensate drain tube in compliance with local regulations. The condensate is a pollutant and cannot be drained directly into the
sewage system. A water/oil separator of suitable capacity is recommended.

4.3 Start-up

Make sure that inlet and outlet valves are closed. Activate the 1S1 and ON/OFF switch and check the pilot light on the control panel.
TO START THE DRYER IT IS NECESSARY TO PRESS AND HOLD THE ON/OFF BUTTON FOR AT LEAST FOR 3 SECONDS.
THERE IS A 8 HOURS DELAY BEFORE THE DRYER WILL START AFTER THE DRYER IS TURNED ON.
Allow the dryer to run at full speed for some minutes, i.e. until the temperature value is +3° C.
Now open the outlet air valve and then open gradually the inlet air valve. In this way, the system is gradually pressurized.
If the dryer is overloading the max. use limits (see technical data), its performance will be remarkably lower but safety will not be in danger.
Before disconnecting the dryer from electrical power supply, use ON/OFF key to stop the dryer. Otherwise wait
10 minutes before switching the dryer on again, in order to allow freon pression re-balance.

5.0 MAINTENANCE

5.1 Weekly

Visual check if the condensate is properly drained.

5.2 Monthly

Perform the following after stopping the compressed air blow by closing the inlet and outlet cocks.

5.3 After 6 months

Unplug the machine before performing the following.
According to the room temperature quality and raising outdoor temperature, clean the condenser with an air jet and clean the finned unit to remove
possible scales or deposits which might decrease its performance.
Check that the compressor consumption values fall within the range mentioned on the machine plate (see compressor product label).

6.0 CONTROL PANEL

The machines in this range are equipped with an electronic controller for the adjustment of the operating parameters. Adjustments
can be made using the digital panel, located on the dryer's front panel. Please note that the SET POINT & other control
parameters have been optimized and factory set. Although the set point value can be displayed, the ability to alter these
factory settings via the digital interface on the front panel has been removed to eliminate the possibility of unit damage
caused by improper settings.
20/89
fig.1 - Control panel
Cod. 710.0103.01.01 – Rev.04 – 09.2012
ED – DXL AL
ED
ED
ED
serie

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