Electronic/Manual Applicators
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      1. Harvest Tec Knowledge Hub
      2. Troubleshooting
      3. Electronic/Manual Applicators

      Common Troubleshooting for Manual Applicators

      By following this guide, you can effectively troubleshoot and resolve common issues with Manual Applicator pumps and systems, ensuring reliable operation and performance.

      Pump will not run.

      1. Pump locked up.
      2. Damaged wire.
      3. Vapor locked.

      1. Clean or rebuild pump if motor is OK.
      2. Repair damaged wire.
      3. Loosen hose by check valve by nozzles or manifold and bleed air.

      Pump runs but will not prime.

      1. Air leak in intake.
      2. Clogged intake.
      3. Restricted outlet.
      4. Check valve on outlet stuck closed.
      5. Dirt inside pump.

      1. Tighten fittings on intake side.
      2. Clean.
      3. Check and clean tips.
      4. Clean or repair check valve.
      5. Replace pump check valve.

      Pump does not develop enough output.

      1. Air leaks or clogs on inlet side.
      2. Electronic box out of adjustment.
      3. Pump worn or dirty.
      4. Low supply voltage.
      (Pump requires 12v minimum)
      5. Bad gauge.

      1. Tighten or clean filter bowl assembly.
      2. Refer to box adjustment page.
      3. Rebuild pump.
      4. Check voltage at connection with voltmeter.
      5. Gauge should read less than 10 PSI when not in use. Also tips should lose spray pattern below 10 PSI. Check accuracy.

      Pump output varies.

      1. Clogged or restricted inlet.
      2. Worn pump parts.

      1. Clean
      2. Rebuild pump.