Clearing the Dry Abrasive Hose

An abrasive clog is a blockage at some point in the abrasive stream. The most common area that this occurs in is the abrasive hose. Fortunately, it is the easiest to fix and this procedure is a good one to do every once in a while for general maintenance.

1. Disconnect dry abrasive hose tip from nozzle, inspect the hose tip. A hose tip that is mostly obstructed but still has a few mm hole/passage is normal, however if it is fully blocked, it’s likely you have a hose clog.

2. Pull out dry abrasive hopper.

3. Remove the end of the dry abrasive hose from under the hopper.
[NOTICE] If your abrasive valve does not look like the one pictured, please contact customer support through our ticketing system in order to have the upgrade sent to you. If you have the older plug style valve and try to remove the head like the newer style, it will cause damage to your valve.

4. [CAUTION] (Safety glasses and dust mask required) Using a compressed air source (set to no more than 35 psi) blow into the hopper.
BEWARE: Abrasive will come out of the end of the abrasive hose and may whip around due to the pressure. As a result, make sure that another individual holds the end of the abrasive hose in their hand firmly and in a direction away from people (i.e. in the direction of the tank water is ideal). NEVER let the end of the abrasive hose dangle free when performing this step.
5. Keep the compressed air on for another 5 seconds, making sure the hose tip has nothing but air being expelled. If there is no air, the dry abrasive hose is pinched, kinked, or clogged. Please inspect the hose path and revert back to step 4.
6. Use a compressed air source to blow off wet abrasive in abrasive inlet hole.
7. Reconnect dry abrasive hose end to hopper valve, and also the tip to the cutting head. Make sure O-rings on both ends are seated into their respective holes.