Solution : https://service.sap.com/sap/support/notes/773920 (SAP Service marketplace login required)
Key words : 
prerequisites spool files, error number reason, default output width, terms cluster table, generate output lines, environment variable rclu_r3c_linesize, table cluster, output lines, environment variable, decompression error
Related Notes : 
       
| 774567 | iSeries: Extend R3check output | 
| 89384 | Checking cluster tables with R3check |