What causes fault code CONV-CHAIN1 (Chain Conveyor — Chain Stretch / Elongation Alarm)?

Normal wear — chain elongation is cumulative and irreversible. Insufficient lubrication — pin and bushing wear accelerated by dry running. Overloading — chain loaded beyond rating causing accelerated pin wear. Sprocket teeth worn — worn sprockets accelerate chain wear. Abrasive contamination — grit or product residue grinding chain components

How do I fix fault code CONV-CHAIN1?

Measure chain pitch with a chain wear gauge — replace at 3% elongation for standard roller chain. Inspect drive and idler sprockets for hooked or worn tooth profiles — replace with chain. ALWAYS replace chain AND sprockets together — a new chain on worn sprockets will wear out in weeks. Check and adjust chain tensioner — take up slack, but if tensioner is at end of travel, chain is too long. Verify lubrication system is functioning — check auto-luber reservoir level and drip rate. When installing new chain, pre-stretch by running under light load for first 8 hours, then retension

Chain Conveyor — Chain Stretch / Elongation Alarm

CONV-CHAIN1

Chain conveyor monitoring system detected excessive chain elongation. Chain pitch has exceeded the wear limit, increasing risk of chain skip or break.

medium conveyor

conveyor chain stretch elongation sprocket lubrication

Probable Causes (ranked)

Normal wear — chain elongation is cumulative and irreversible
Insufficient lubrication — pin and bushing wear accelerated by dry running
Overloading — chain loaded beyond rating causing accelerated pin wear
Sprocket teeth worn — worn sprockets accelerate chain wear
Abrasive contamination — grit or product residue grinding chain components

Fix Steps

1 Measure chain pitch with a chain wear gauge — replace at 3% elongation for standard roller chain
2 Inspect drive and idler sprockets for hooked or worn tooth profiles — replace with chain
3 ALWAYS replace chain AND sprockets together — a new chain on worn sprockets will wear out in weeks
4 Check and adjust chain tensioner — take up slack, but if tensioner is at end of travel, chain is too long
5 Verify lubrication system is functioning — check auto-luber reservoir level and drip rate
6 When installing new chain, pre-stretch by running under light load for first 8 hours, then retension

Field Trick

Never replace just the chain or just the sprockets — always replace as a set. A new chain on worn sprockets will develop the wear pattern of the old chain within a week. The $200 you saved skipping the sprockets costs you a new chain in a month.

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