///Weak suction (vacuum) at the abrasive inlet
Abrasive feed

Weak suction (vacuum) at the abrasive inlet

The jet creates suction that pulls abrasive into the mixing chamber.

Safety first: Switch off the pump, release all pressure (open the on/off valve or bleed-down valve) and lock out before you open any high-pressure part. Never put a hand or tool near a running jet.
1Check the causes, most likely first 0 of 3 checked
01Worn mixing chamber Most likely

Wear reduces vacuum.

How to check: Inspect the mixing chamber.

PhotoArt. no.DescriptionReplaces OEMExcl. VAT
10558 PASER 3 Mixing chamber body, 009940-1
Mixing chamberFlow, IWP, Intermac
IWP 12561 · Flow 009940-1 € 238.80
10559 ECL Mixing chamber, 014197-1
Mixing chamberFlow, IWP
IWP 10012 · Flow 014197-1 € 358.80
10560 Dynamic mixing chamber, 017364-1
Mixing chamberFlow
Flow 017364-1 € 418.80
10561 PASER 4 Mixing chamber body, 041138-1
Mixing chamberFlow, Accustream
Accustream 14468 · Flow 041138-1 € 362.10
11428 Mixing Chamber, 009940-2
Mixing chamberFlow, Intermac
Flow 009940-2 € 219.00

02Worn focusing tube Possible

A wide bore lowers vacuum.

How to check: Check the tube bore.

03Leak at the abrasive inlet Less likely

Air enters elsewhere.

How to check: Check the inlet connection.

Related problems

General advice based on manufacturer manuals and service practice. Always follow the manual of your machine. Not sure? .