Column Manager "column door open while running" message - WKB622

SYMPTOMS

• Sample Manager produces an error message "column x door open while running" and stops the run.
• Active preheater does not achieve the programmed set point temperature for the selected column

ENVIRONMENT

• ACQUITY UPLC H-Class Column Manager-Active
• ACQUITY UPLC I-Class Column Manager-Active
• ACQUITY APC Column Manager-Single Zone

CAUSE

1. The magnet on the internal cover is missing.

2. The door is broken not giving enough contact for the magnet sensor to work.

FIX or WORKAROUND

1. Replace the magnet or replace column trough cover assembly.
   • Part number 410003267 for the magnet
   • Part number 700005439 for the Column Module Front Trough Cover 
   • Part number is 700009538 for the Column Module Cover for the CM-S

ADDITIONAL INFORMATION

• The magnet is located on the column trough cover. The read sensor is located within the dual column trough assembly.

• Closing the compartment trough cover engages a magnet switch that turns on the 24V to the active preheater.  
• The active preheater operates at the set point temperature of the selected column position when the trough compartment cover is closed.