AEC AP Series Large Dehumidifying Dryer - Manual (Page 63)

Large Dehumidifying Dryers Controls 62
4-7 Program Upgrade Procedures
The AP1+ PLC and touch screen both use compact flash memory cards for data and program
storage. Occasionally, a program upgrade will become available from ACS for the AP1+
PLC, touch screen or both. The customer will receive the upgrade(s) by way of a new
compact flash card. Follow the instructions in this document to upgrade the specific
component.
PLC Program Upgrade
• Option – Save the dryers settings before executing this procedure.
• Power down the dryer and access the dry air source control enclosure.
• Remove and retain the existing memory card from the PLC.
• Turn on DIP switch 1-2 (Located under the CPU cover).
• Insert the upgrade memory card.
• Power up the dryer.
o When the PLC “Busy” LED stops flashing the PLC upgrade is complete.
• Power down the dryer.
• Remove the upgrade memory card.
• Re-insert the original memory card.
• Power up the dryer, inspect and verify the new version number(s)
• Start the dryer as required.