Support

While Everflo 12 volt diaphragm pumps are covered by a one year warranty on manufacturing defects, continuous use of your Everflo pump may lead to rare issues. Below is a wide range of troubleshooting solutions to help get your pump up and running.If you are still having issues, please give our Customer Support a call at 320-340-6464 or send an email via our Contact page.

Replacing A Valve Plate Assembly On Diaphragm Pump + -

If your Everflo 12 volt diaphragm pump is leaking, not turning on, or providing low flow; it might be time to replace your diaphragm valve plate assembly.

For a more in-depth step by step process, watch our video on Replacing Your Diaphragm Valve Plate Assembly.

Diaphragm Pump Runs While Not Spraying + -

There is a few underlying issues that could cause your diaphragm pump to continuously run even while not spraying. One issue is the pressure switch going bad. You can determine if the pressure switch is bad by bypassing the connection to the pump.

For a more in-depth step by step process, watch our video on Bypassing the Pressure Switch.

Force Priming A Sprayer + -

There may come a point where you need to force prime your sprayer diaphragm pump.

For a more in-depth step by step process, watch our video on Force Priming A Pump.

Sprayer Pump Will Not Turn On + -

Bad Electrical Connection – Verify connections are tight and battery posts are free of corrosion.

Short in Wires – Check condition of wire insulation and replace if gaps or holes are present..

Locked Drive – Replace the diaphragm assembly.

Faulty Pressure Switch – Replace the pressure switch assembly.

Incorrect Voltage – Check voltage and verify within range ±10%.

Fuse Blown – Check and/or replace the fuse.

Sprayer Pump Will Not Prime + -

Out of Product (Fluid) – Refill the supply container/sprayer tank.

Inlet Air Leak – Tighten the hose fittings and/or replace cracked fittings.

Inlet/Outlet Tube Restriction – Remove any restriction from the inlet or outlet tubes.

Incorrect Voltage – Check voltage and verify within range ±10%.

Clogged Intake Valves – Remove obstruction from valves.

Clogged Intake Tube – Remove obstruction from tube.

Low Pressure or Flow + -

Worn Spray Gun Nozzle – Replace spray gun.

Worn Boom Nozzle – Replace boom nozzle.

Worn Wobble or Diaphragm Plate – Replace the diaphragm assembly.

Worn Pressure Switch – Replace pressure switch assembly.

Inlet/Outlet Tube Restriction – Remove restriction.

Incorrect Voltage – Check voltage and verify within range ±10%.

Clogged Intake Valves – Remove obstruction from the valves.

Clogged Intake Tube – Remove obstruction from the tube.

Inlet Air Leak – Tighten loose fittings, replace cracked fittings.

Pump Leaks + -

Loose Fasteners – Tighten fasteners and hose clamps.

Pump Seals Degraded – Replace the pump head assembly.

Leak in Diaphragm – Replace the diaphragm assembly.

Pump Cycles While Not Spraying + -

Leak In the System – Tighten leaking hose clamps, fittings or replace spray gun.

Faulty Pressure Switch – Replace pressure switch.

Incorrect Voltage – Check voltage and verify within range ±10%.

Air Trapped in System – Purge the air from the system.

Rough Operation + -

Flexible Mounting Surface – Install your pump on a rigid mounting surface.

Loose Pump Head – Tighten fasteners.

Compressed Base Feet – Decompress base feet.

Rigid Plumbing – Replace rigid plumbing with flexible hoses.