Incorrect drive gear selected (Manual Only) – Select correct gear
Vacuum filter blocked – Clean
Dewater valve not closed – Close
Tank drain valve not closed (Option) – Close
Blocked boom hose or ‘T’ piece – Clear
Damaged or missing sight gauge – Repair/Replace
Vacuum relief valve/s jammed – Free
Boom hose worn – Replace
Tank internal filter restricted – Clean
Loose drive belt – Adjust
Damaged door seal – Replace
Cover loose on plenum box – Tighten
Worn lobes on vacuum pump – Repair
Inspection cover on T-Piece not fitted – Fit