OMEGA AIR B-DRY Series, Инструкция по установке и эксплуатации

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13 Troubleshooting
13.1 Controller Turns OFF
Description:
Controller Turns OFF immediately or shortly after start-up.
Possible causes, inspection and fixing procedure:
1. Faulty control valve : Inspect the control valve coils. If one or more the coils keeps
warming up considerably compared to other coils then the coil is malfunctioning and
causing circuit breaker to disconnect the controller and the coils from electrical supply.
Order the control valves service kit.
2. Faulty wiring or contact : If the control valves are working properly, inspect the
electrical connections within the controller housing. Turn OFF the circuit breaker and
disconnect the B-DRY dryer from electrical supply. Unscrew the lid of the housing box.
Check if the wires are firmly screwed to the terminals. Screw the wire into terminal
firmly is it gets pulled out during inspection. Screw the lid back on and start the dryer
operation to see if the problem is solved.
3. Faulty circuit breaker, transformer or PLC : If the problem is not solved either circuit
breaker, transformer or PLC are faulty. Contact your supplier for replacement.
4.
13.2 High Pressure Drop
High pressure drop is pressure drop exceeding 1 bar. High pressure drop can be caused by
the following conditions.
13.2.1 Inadequately Dimensioned Compressor and Dryer
If the compressor supplying the dryer is smaller than rating of the dryer the pressure drop will
occur. The size of adsorption dryer towers and purge nozzles is determned by adsorption dryer
rating and expected supply of compressed air.
During normal operation where compressor, adsorption dryer and downstream users are
properly dimensioned the volumetric air flow loses due to purge air realese during
regeneration phase are 15-21% of nominal inlet compressed air. Pressure drop will still occur
during switchovers and due to filters, valves and tower pressure drops but it will be between
0,2-1,0 bar.