1. If the plunger on the Spatter Shield Probe is depressed (off position) the inert gas stream bypasses the canister. In this configuration there is no mist produced. The welder behaves normally, as if the Spatter Shield system were not installed.

2. If the probe, tube, or misting jet become blocked the inert gas stream will bypass the probe and the system will behave in a similar manner to when the plunger on the probe is in the off or bypass position.

Below are diagrams which show how to remove the jet at the end of the Spatter Shield Probe and remove any debris which may be lodged by purging with gas.

2. If the internal workings of the probe fail then the most likely outcome will be that the inert gas stream will bypass the probe and behave as if the plunger is in the off or bypass position.
3. If the inert gas stream is heavily contaminated with foreign material of significant size the bypass channel within the probe head may get blocked. In this case the outcome is the same as having a blocked or pinched gas line and the flow of gas to the weld gun will be severely reduced or stopped. This is why it is recommended to replace any old or deteriorated gas hoses before installing the Spatter Shield Kit to your manual, semi automatic or robotic welder