Use and Care Manual

13
Electrical connection
1) Connection: Use conductors which can carry the maximum current required at the maximum ambient operating
temperature, according the type of installation chosen (see indication on the electrical diagram). Use only UL/CSA
marked copper cables in conformity with NEC (National Electrical Code) and CEC (Canadian Electrical Code).
2) Appropriate protection should be installed to avoid over current and possible electrocution due to short-circuit
before installing the air dryer.
3) Proper grounding should be installed.
4) Permissible operating voltage range: ± 5%
5) Refer to the electrical schematic and direct any questions to MAT Industries, LLC technical support.
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OPERATION
Functional test
Start the air dryer after the following checks are made:
Inspection of the components:
1) Is there a problem in the air system and electric circuit?
2) Has the by-pass circuit valve (in option) been closed?
3) Is the purge system valve open?
4) Is the compressed air pressure sufficient?
5) Is there a differential between the permissible rated voltage and the interrupting capacity of the fuses and the
circuit-breaker?
Operating procedure
Press the "ON" power button (press the button of the controller in the front and hold for a while for CAREL controllers)
We recommend to start the dryer, prior to opening up the air inlet and outlet valves for five minutes. After starting
the unit and running it for five minutes slowly pressurize the dryer to avoid any possible damage. The condensate
drain should be cycled to ensure functionality and then slowly open the outlet valve to the system.
(If compressed air enters the dryer quickly, the pressure could damage parts or instruments).
ۖ Important! ۗ
Wait for more than 5 minutes before restarting the dryer.
USE
Initial start-up of IAD refrigerated air dryer
Only start up the dryer once you have thoroughly tested all the compressed air, refrigeration and electrical
connections.
1. Close the isolating valves on the dryer and open the by-pass valve.
2. Check on the controller that the dryer is OFF.
3. Start the air compressor
4. Start the dryer. (press on the arrow up button, the controller will display ON)
5. The refrigerating compressor and condenser fan will start after a 2-minute safety time-out interval.
6. Pressurize the dryer by slowly opening the inlet valve.
7. Slowly open the dryer outlet valve and then close the by-pass.
8. Check that the condensate drain opens when you push the arrow’s down button.
9. Check that the condensate drain valve opens automatically every 5 minutes.
The dryer is now ready to run normally.
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