Downstream System Troubleshooting

If you are having issues with your downstream chemical injector system, use the table below to troubleshoot the issues.

Symptom

Possible Cause

Solution

The system doesn’t seem to be drawing any chemicals

No liquid in the tank

Ensure that there is water, SH, and/or soap in every tank that’s being drawn from. If there is no liquid in the tank, fill it and try again. 

Air leak in the system

An air leak can happen when the tanks are empty and the hoses are drawing in the air, or it can happen at any point between the tank and the pump. The most common areas of failure are barbs to hose connections or threaded fittings that have caused cracks.

System back feeding into another tank

Failed check valve

A failed check valve will allow liquid to back feed. Remove and disassemble the check valve. Clear the assembly of any debris. Reassemble and install. If the issue persists, replace the check valve.

The spray pattern is erratic or spotty.

Air leak in the system

An air leak can happen when the tanks are empty and the hoses are drawing in the air, or it can happen at any point between the tank and the pump. The most common areas of failure are barbs to hose connections or threaded fittings that have caused cracks.

Clogged or damaged nozzle

Inspect the nozzle for obstructions or damage. Clean obstructions or, in the case of damage, replace the nozzle.

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