To Next PageTo Next PageWhy is my Graco Husky 3300 exhausting fluid with the air?
If your Graco Water Pump is exhausting fluid with the air, it's likely due to a ruptured diaphragm, a loose diaphragm shaft bolt, or a damaged diaphragm shaft bolt o-ring. Consider replacing the diaphragm, tightening the bolt, or replacing the o-ring.
What to do if my Graco Water Pump is leaking air externally?
If your Graco Water Pump is leaking air externally, check for loose air valve or fluid cover screws and tighten them. Also, inspect the diaphragm, air valve gasket, and air cover gasket for damage, and replace if necessary.
How to fix air bubbles in the fluid from my Graco Husky 3300 Water Pump?
To fix air bubbles in the fluid from your Graco Water Pump, start by tightening the suction line. Also, check for a ruptured diaphragm, loose manifolds, damaged seats or o-rings, and tighten manifold bolts or replace seats or o-rings as needed. Inspect the diaphragm shaft bolt o-ring for damage and replace if necessary. Reduce pump speed or suction lift if pump cavitation is the cause. Finally, ensure the diaphragm shaft bolt is not loose and tighten it if necessary.
Why does my Graco Water Pump keep cycling but won't prime?
If your Graco Water Pump cycles but won't prime, it could be due to several reasons. The pump might be running too fast, causing cavitation; reduce the air inlet pressure. Check the valve ball for wear or if it's wedged; replace the ball and seat if needed. Inspect the seat for wear and replace if necessary. Ensure the outlet or inlet isn't clogged and unclog it if it is. Make sure the inlet or outlet valve is open. Tighten any loose inlet fittings or manifolds and replace any damaged manifold o-rings.
What to do if my Graco Husky 3300 Water Pump operates erratically?
If your Graco Water Pump operates erratically, first inspect and clear any clogs in the suction line. Then, clean or replace any sticky or leaking check valve balls. Replace a ruptured diaphragm. Remove any restrictions in the exhaust. Replace damaged or worn pilot valves and air valve. Replace damaged air valve gasket. Repair erratic air supply. Use drier air supply if exhaust muffler icing.
Why won't my Graco Water Pump cycle, or why does it stop after one cycle?
If your Graco Water Pump won't cycle, or cycles once and stops, the air valve may be stuck or dirty; disassemble and clean it, using filtered air. A check valve ball may be worn and wedged; replace the ball and seat. The pilot valve could be worn, damaged, or plugged; replace it. A damaged air valve gasket should be replaced. Finally, relieve pressure and clear the dispensing valve if it's clogged.
What causes a Graco Husky 3300 Water Pump to cycle at stall or fail to hold pressure?
A Graco Water Pump that cycles at stall or fails to hold pressure at stall is often caused by worn check valve balls, seats, or o-rings. Replacement is recommended.
What causes my Graco Water Pump to leak fluid externally from joints?
If your Graco Water Pump is leaking fluid externally from the joints, it is likely due to loose manifold screws or fluid cover screws. Tighten them. Another cause may be worn out manifold o-rings, which should be replaced.
Why is my Graco Water Pump exhausting excessive air at stall?
If your Graco Water Pump exhausts excessive air at stall, it could be due to a worn air valve cup or plate, a damaged air valve gasket, damaged pilot valve, or worn shaft seals or bearings. Consider replacing the cup and plate, the gasket, the pilot valves, or the shaft seals or bearings.
General| Fluid Inlet Size | 3 in |
|---|---|
| Fluid Outlet Size | 3 in |
| Maximum Flow Rate | 300 gpm |
| Maximum Operating Pressure | 125 psi |
| Air Inlet Size | 1/2" NPT |
| Maximum Solid Size | 0.25 in |
| Wetted Parts | Polypropylene, Viton |
| Max Flow Rate | 300 gpm (1135 lpm) |
| Hose Size | 3" |
| Power Source | Air |
Covers fire, explosion, equipment misuse, thermal expansion, chemical, and personal protective equipment hazards.
Details risks from toxic fluids/fumes and hot equipment surfaces.
Addresses issues like pump not priming, stalling, erratic operation, and air bubbles.
Covers exhaust air contamination, moisture, and external pump leaks.
Procedure for safe pressure relief and steps for air valve repair or replacement.
