Troubleshooting And Repair; Possible Causes Of Faults - Beko DRYPOINT AC Series Installation And Operating Manual

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8. Troubleshooting and repair

DANGER Incorrect troubleshooting and repairs
Incorrectly performed troubleshooting and repair tasks can cause serious or even fatal injury
and/or damage to property.
•
In this chapter, you learn about:
• Malfunctions and failures that might occur
• Causes of malfunctions and failures
• Action to be taken to eliminate the cause of a malfunction or failure (see tables below)
Always write down the operating state and parameter settings at the time at which the fault occurred.
To eliminate a fault, you must shut down the plant. Observe the instructions below:
• Shut down the plant.
• To shut down the plant, proceed as described in "9. Shutting down plant".
Attach a warning sign to the plant: "Do not switch on plant!".
• If necessary, depressurise the plant (see "9.1. Depressurising plant").
• After completion of the work, restore the plant to its initial state.

8.1. Possible causes of faults

Before starting a systematic troubleshooting process, check the following:
• Is there any visible damage to the plant or are there plant parts missing?
• Is the plant correctly powered and does the supply voltage correspond to that specified on the type plate?
• Are all electrical components inside the plant powered?
• Are all pneumatically actuated components supplied with control air and does the control air pressure
correspond to that specified on the type plate (minimum pressure)?
• Has the plant been correctly commissioned and started (see also "5. Start-up")?
• Are all external shut-off fittings in the correct position (see also "5. Start-up")?
• Do the feed parameters (max. throughput rate, min. operating pressure, max. inlet temperature) correspond to
the design parameter values?
Troubleshooting The tables contain information regarding the symptoms, causes and remedies for efficient
troubleshooting.
Symptom
Control unit not working properly;
LEDs on front foil not lit
Alarm signal at alarm output (terminal
strip X11) (if installed)
High differential pressure at adsorption
dryer
DRYPOINT AC 410 – 495 | DRYPOINT
®
All troubleshooting and repair work must be performed by suitably instructed or trained
specialist technical personnel!
Unit not powered
Fuse F1 defective (see page 31)
Control system defective
Filter elements blocked
Flow distributors in containers blocked
AC 410 – 495 MS
®
Possible cause
Installation and operating manual
Remedy
Ensure that the terminals of the control
are powered with the voltage specified
on the type plate.
Disconnect the control system from the
power supply; check the control unit and
replace fuse, if required
Check control unit; replace, if necessary
Contact customer service department
Check differential pressure; replace filter
elements, if necessary
Contact customer service department
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