Passive Alarms

Problem

Possible cause Solution

P23 The MDC conveying blower exceeded the full load amps rating for the blower motor. This is a passive alarm so the dryer will continue run- ning, but the material convey- ing function will stop.

The MDC blower has mechanically failed or is unable to rotate freely.

With the power removed, check the MDC blower for mechanical failure and free rotation. Replace if neces- sary. Wait 3 to 15 minutes with power on until the dryer indicates the overload condition has cleared then try to restart the dryer.

The MDC blower has failed electri- cally.

With the power removed, check the MDC blower for electrical shorts or open circuits. Replace if necessary. Wait 3 to 15 minutes with power on until the dryer indicates the overload condition has cleared then try to restart the dryer.

The overload is set incorrectly.

The MDC conveying blower has exceeded the full load amps rating for the blower motor.

With the power removed, check the overload settings and confirm that the settings match the full load amps listed on the conveying blower motor. Wait 3 to 15 minutes with power on until the dryer indicates the overload condition has cleared then try to restart the dryer.

Press alarm acknowledge and wait 2 to 3 minutes for the overload to auto- matically reset. If the alarm condi- tion occurs again, have a qualified electrician check the current draw to the motor.

P25 RTD Integrity – If the process RTD is faulty.

The connection in the electrical enclosure for the process RTD is loose.

The connection of the RTD plug on the control board is loose.

The process RTD has failed.

Check the RTD plug connection and tighten if needed.

Check the plug connection and tight- en if needed.

Replace the process RTD.

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Conair 100, 25, 15, 50 specifications Passive Alarms Problem Possible cause Solution

50, 15, 100, 25 specifications

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