1. Introduction
The Everflo 12V On-Demand 2.2GPM Quick Attach Diaphragm Pump is engineered for efficient fluid transfer across various applications. This pump features a Honeywell Micro Switch™, corrosion-resistant Viton® valves, a Santoprene™ diaphragm, and a fiberglass-reinforced polypropylene pump manifold with quick attach ports. Its design ensures faster primes and a unique pressure switch that minimizes wear on the motor and switch. The automatic power switch conserves battery power by turning off the pump when no flow is needed. It is CE approved and designed with a standard mounting pattern for straightforward installation.
Figure 1: Everflo EF2200-QA-BOX Diaphragm Pump
2. Product Features
- 12V Operation: Designed for 12-volt systems, capable of handling up to 2.2 GPM and 70 PSI.
- Self-Priming: Capable of self-priming up to ten feet, simplifying initial setup.
- Quick Attach Ports: Features quick attach ports for easy and secure plumbing connections.
- Included Fittings: Comes with (1) QC x 3/8” Hose Barb Fitting and (1) QC x ½” MNPT Fitting for versatile plumbing.
- Automatic Power Switch: Conserves battery power by automatically shutting off when no flow is needed.
- Durable Construction: Built with a Honeywell Micro Switch™, corrosion-resistant Viton® valves, and a Santoprene™ diaphragm for longevity.
- Standard Mounting: Equipped with a standard mounting pattern for quick and easy installation on most sprayer tanks.
Figure 2: Key Features Diagram
3. Technical Specifications
| Specification | Value |
|---|---|
| Brand | Everflo |
| Model Number | EF2200-QA-BOX |
| Voltage | 12 Volts DC |
| Maximum Flow Rate | 2.2 Gallons Per Minute (GPM) |
| Maximum Pressure | 70 PSI |
| Maximum Lifting Height | 10 Feet |
| Material | Polypropylene (PP) |
| Product Dimensions (L x W x H) | 9.75" x 4.25" x 4" |
| Item Weight | 5.15 Pounds |
| Included Components | Fittings (1 QC x 3/8” Hose Barb, 1 QC x ½” MNPT) |
Figure 3: Product Dimensions
4. Setup Guide
4.1 Unpacking
Carefully remove all components from the packaging. Verify that all listed components, including the pump and the two quick-attach fittings (3/8” Hose Barb and ½” MNPT), are present and undamaged.
4.2 Mounting
The pump features a standard mounting pattern for easy integration. Secure the pump to a stable, flat surface using appropriate fasteners. Ensure the mounting location allows for proper ventilation and access for electrical and plumbing connections. Avoid mounting in areas prone to excessive vibration or direct exposure to harsh elements if possible.
Figure 4: Pump Mounted on Sprayer Tank
4.3 Electrical Connection
Connect the pump to a 12V DC power source. The pump typically has red (positive) and black (negative) wires. Ensure correct polarity to prevent damage. It is recommended to install an inline fuse (not included) appropriate for the pump's maximum amp draw (8.0 Amps) to protect the electrical system. Ensure all electrical connections are secure and protected from moisture.
4.4 Plumbing Connection
Attach the appropriate quick-attach fittings to the pump's inlet and outlet ports. The pump is designed with quick-attach ports for easy connection to your plumbing system. Ensure all connections are tight to prevent leaks. The pump is self-priming, but for best results, ensure the inlet hose is as short and straight as possible and free of kinks.
5. Operating Instructions
5.1 Initial Start-up
- Ensure all electrical and plumbing connections are secure.
- Fill the supply tank with the desired fluid.
- Turn on the 12V power supply to the pump. The pump will begin to prime itself.
- Allow the pump to run until a steady flow is achieved, indicating it is fully primed.
5.2 Usage
The Everflo pump is an on-demand pump, meaning it will run when there is a demand for fluid and shut off automatically when the pressure builds up (e.g., when a spray nozzle is closed). This automatic shut-off feature helps conserve battery power and reduces wear on the pump components.
Ideal applications include agricultural spraying (spot or broadcast), de-icing (salt brine), mobile pressure washing systems, water transferring, irrigation systems, fire suppression, and mist spraying.
Figure 5: Pump in use on an ATV for spraying
Figure 6: ATV spraying application
Figure 7: Tractor spraying application
6. Maintenance
6.1 Cleaning
Regular cleaning is crucial for the longevity of your pump, especially when used with chemicals. Follow these steps after each use:
- Drain the tank of any remaining fluid.
- Add clean water to the tank and then drain it again to rinse.
- Add a small amount of clean water (e.g., 2 inches) to the tank, power up the pump, and spray the water out through the nozzle.
- Continue spraying until the water coming out is clear and free of any chemical residue or suds.
- Once clean, unpower the pump and squeeze the lever on the wand (if applicable) to release any remaining pressure inside the pump.
Note: There is not a pump sold that will withstand harsh herbicide/pesticide chemicals on the interior seals if not properly cleaned. Cleaning takes less than 5 minutes and significantly extends pump life.
6.2 Storage
When storing the pump for extended periods, especially in freezing conditions, ensure all fluid is drained from the pump and hoses to prevent damage. Store the unit in a dry, protected area. Leaving some clean water in the tank (but not the pump itself) can be beneficial for tank integrity.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Pump does not turn on | No power, loose electrical connections, blown fuse, faulty switch. | Check 12V power supply. Verify all wire connections are secure. Inspect and replace fuse if blown. Test the power switch. |
| Low pressure or no flow | Clogged inlet/outlet, kinked hose, air leak in suction line, low fluid level, worn pump head. | Check and clear any obstructions in hoses or nozzles. Straighten any kinks. Ensure all plumbing connections are airtight. Refill tank. Inspect pump head for wear or damage. |
| Pump leaks | Loose fittings, damaged O-rings/seals, cracked housing. | Tighten all quick-attach fittings and hose clamps. Inspect O-rings and seals for damage and replace if necessary. If housing is cracked, pump may need replacement. |
| Pump runs continuously (does not shut off) | Leak in system, faulty pressure switch, open nozzle. | Check entire system for leaks (hoses, fittings, nozzle). Ensure nozzle is fully closed. If no leaks, pressure switch may need replacement. |
8. Warranty and Support
8.1 Warranty Information
The Everflo EF2200-QA-BOX Diaphragm Pump is backed by a two-year warranty. This warranty covers defects in materials and workmanship under normal use and service. Please retain your proof of purchase for warranty claims.
8.2 Customer Support
For technical assistance, troubleshooting beyond this manual, or warranty inquiries, please contact Everflo customer support. Refer to the product packaging or the official Everflo website for the most current contact information.
Manufacturer: Everflo (A division of Valley Industries)