Code 701421: Central lubrication system: container empty
Issue Description & Safety Warning
The Chiron Siemens-Control CNC has triggered a critical Central lubrication system: container empty alarm. Immediate attention from a qualified operator or maintenance technician is required to prevent secondary damage to the equipment or spoiled parts during the manufacturing cycle. Always ensure standard safety and LOTO procedures are followed before accessing electrical cabinets.
Official Troubleshooting Steps
The container on the central lubrication system is empty. Grease lubrication: The PLC input signal "Grease level in order" is not registered. Oil lubrication: The PLC input signal "Oil level central lubrication system" is not registered. The error has the following effect: The message appears immediately and the central lubrication system is switched off. "Feed Stop" after end of program ( M30 ) or change work area/ table side. For MT series: The message appears immediately and the central lubrication system is switched off. Channel-specific "Read-in stop" after pulling bar call ( M450 ) or workpiece counting pulse ( M60 ) on this channel. The other channel, respectively, continues to run until the next tool change or rapid feed ( G0 ). 1. Check the filling level on the central lubrication system. and fill the equipment in accordance with the manufacturer’s instructions. 2. Grease lubrication: Check PLC input signal "Grease level in order". Oil lubrication: Check PLC input signal "Oil level central lubrication system". 3. As soon as the malfunction is remedied, press the following key: [FEED START] Message is cleared.
Source: CHIRON Error Message Overview, all series (Siemens control, V2.0.6, 2012)
Last reviewed: 2026-07-01 · Verified against the manufacturer’s official documentation.
About Chiron Siemens-Control CNC Alarms
Chiron controllers include extensive self-diagnostics that flag or halt the machine when a fault is detected. Error code 701421 on the Siemens-Control CNC identifies one specific fault condition — its documented cause and the official corrective steps are listed above, sourced from Chiron's service documentation. Always confirm against the manual for your exact machine configuration and follow LOTO procedures before servicing.
Complete Alarm List: 545 Chiron Siemens-Control CNC codes.
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