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