Introduction
The SOLO 475-B Backpack Sprayer is a 4-gallon capacity unit designed for efficient application of various liquids. It features a high-performance diaphragm pump system capable of producing up to 60 psi. The diaphragm is constructed from top-quality Tivilon material, offering excellent resistance to harsh chemicals, including bleach, and ensuring a long service life. This sprayer is suitable for applying disinfectants, bleach solutions, fertilizers, herbicides, pesticides, and formulations for tree, shrub, and plant protection. Its design allows for the passage of small abrasive particles without damaging the pump, making it compatible with water from various sources that may contain sediment. The diaphragm backpack is ideal for handling chemicals in wettable powder form, liquid formulations and bleach solutions.
Safety Information
Always read and understand the entire instruction manual before operating the sprayer. Wear appropriate personal protective equipment (PPE) when handling chemicals. Ensure proper ventilation and follow all chemical manufacturer's instructions for mixing, application, and disposal. Do not spray flammable liquids or use the sprayer near open flames. Keep out of reach of children and pets. After each use, thoroughly clean the sprayer according to the maintenance instructions to prevent chemical residue buildup.
Product Features
- 4-Gallon Capacity: Large tank for extended use without frequent refilling.
- High-Performance Diaphragm Pump: Delivers up to 60 psi, suitable for wettable powders, liquid, and bleach solutions. Designed to pass small abrasive particles without pump damage.
- Tivilon Diaphragm: Made from top-quality material for outstanding resistance to harsh chemicals.
- Interchangeable Pump Handle: Can be configured for left or right-hand operation for user comfort.
- 48-inch Nylon-Reinforced High-Pressure Hose: Provides extended reach for various spraying tasks.
- Commercial Shut-Off Valve: Features a lock-on/lock-off mechanism for continuous spraying or intermittent use.
- 28-inch Unbreakable Wand: Durable wand for reliable performance.
- Four-Nozzle Assortment: Includes adjustable, fan spray, hollow cone, and jet stream nozzles for multiple applications. TeeJet compatible.
- Ergonomic Tank Design: Contours to your back for greater comfort.
- Padded Polyester Straps: For operator comfort during prolonged use.
- Built-in Wand Retainers: For easy storage of the wand.
Components Overview
Familiarize yourself with the main components of your SOLO 475-B Backpack Sprayer before assembly and operation.
- Tank: 4-gallon UV-resistant high-density polyethylene tank.
- Lid: Large 4.25-inch opening with strainer for easy filling and cleaning.
- Pump Handle: Connects to the diaphragm pump for pressure generation.
- Hose: 4-foot nylon-reinforced high-pressure hose.
- Shut-Off Valve: Controls the flow of liquid to the wand.
- Wand: 28-inch unbreakable wand for precise application.
- Nozzles: Interchangeable tips for various spray patterns.
- Backpack Straps: Padded straps for comfortable carrying.
Setup and Assembly
The SOLO 475-B sprayer comes partially assembled. Follow these steps to complete the setup:
- Attach Pump Handle:
Insert the pump handle into the desired side (left or right) of the pump mechanism at the base of the tank. Secure it with the provided hardware. Ensure it moves freely for pumping action.
- Connect Hose to Shut-Off Valve:
Attach one end of the 48-inch nylon-reinforced hose to the outlet on the pump assembly. Secure it tightly to prevent leaks.
- Connect Shut-Off Valve to Wand:
Connect the other end of the hose to the commercial shut-off valve. Then, attach the 28-inch unbreakable wand to the shut-off valve. Ensure all connections are secure.
Figure 2: The shut-off valve and wand assembly, showing the ergonomic grip and trigger mechanism. - Select and Attach Nozzle:
Choose one of the four provided nozzles (adjustable, fan spray, hollow cone, or jet stream) based on your application needs. Screw the selected nozzle onto the end of the wand. Ensure it is finger-tight.
Figure 3: The four-nozzle assortment, including adjustable, fan spray, hollow cone, and jet stream options. - Adjust Backpack Straps:
Adjust the padded polyester straps to comfortably fit your back. The ergonomic tank design and lumbar support are intended to distribute weight evenly. Ensure the chest and waist straps (if applicable) are also adjusted for stability.
Figure 4: Detailed view of the padded back support and adjustable straps for enhanced user comfort.
Operating Instructions
- Filling the Tank:
Unscrew the large red lid from the top of the tank. Use the integrated strainer to prevent debris from entering the tank. Carefully pour your desired liquid solution into the 4-gallon tank. Do not overfill. Securely replace the lid, ensuring it is tightly sealed to prevent leaks.
Figure 5: The wide tank opening with a built-in strainer for easy and clean filling. - Pressurizing the Sprayer:
With the sprayer on your back, use the pump handle to build pressure within the tank. Pump the handle several times until you feel resistance, indicating sufficient pressure for spraying. The diaphragm pump is designed for consistent pressure output.
- Spraying:
Direct the wand towards the target area. Squeeze the trigger on the shut-off valve to begin spraying. For continuous spraying, engage the lock-on feature on the shut-off valve. Release the trigger or disengage the lock for intermittent spraying.
- Adjusting Spray Pattern:
If using the adjustable nozzle, twist the nozzle tip to change the spray pattern from a fine mist for delicate plants to a solid stream for targeted applications. For other nozzles, refer to the "Nozzle Selection" section for their specific spray characteristics.
Nozzle Selection
The SOLO 475-B includes four interchangeable nozzles to suit various spraying requirements:
- Adjustable Nozzle: Provides versatility from a fine mist for delicate plants to a powerful stream for targeted applications.
- Fan Spray Nozzle: Ideal for broad coverage of large areas like lawns or flat surfaces.
- Hollow Cone Nozzle: Best for fungicides and insecticides on foliage, offering good penetration.
- Jet Stream Nozzle: Delivers a concentrated, long-distance stream for reaching high branches or specific targets.
To change a nozzle, simply unscrew the current nozzle from the wand and screw on the desired one. Ensure a tight fit to prevent leaks.
Maintenance
- Cleaning:
After each use, thoroughly rinse the tank, pump, hose, and wand with clean water. Pump clean water through the sprayer to flush out any chemical residue. For certain chemicals, a specific cleaning solution may be recommended by the chemical manufacturer.
- Storage:
Store the sprayer in a cool, dry place, away from direct sunlight and freezing temperatures. Ensure the tank is empty and clean before storage. The built-in wand retainers help keep the wand organized.
- Diaphragm Inspection:
Periodically inspect the Tivilon diaphragm for any signs of wear or damage. Replace if necessary to maintain optimal performance and chemical resistance.
- Gasket and Seal Check:
Regularly check all gaskets and seals for wear. The sprayer comes with extra gaskets and Teflon tape to ensure leak-free connections.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No spray or weak spray | Low pressure; Clogged nozzle; Clogged filter; Air leak | Pump handle to build pressure; Clean nozzle; Clean tank strainer; Check all connections for tightness. |
| Leaking from connections | Loose connections; Worn gaskets/seals | Tighten all connections; Replace worn gaskets/seals; Apply Teflon tape if needed. |
| Pump handle difficult to operate | Debris in pump; Damaged diaphragm | Clean pump mechanism; Inspect and replace diaphragm if damaged. |
Specifications
| Attribute | Detail |
|---|---|
| Brand | SOLO |
| Model Number | 32118 (475-B) |
| Tank Volume | 4 Gallons (15 Liters) |
| Maximum Pressure | 60 psi |
| Hose Length | 48 Inches |
| Wand Length | 28 Inches |
| Material | High-density polyethylene tank, Tivilon diaphragm |
| Power Source | Hand Powered |
| Item Weight | 10 Pounds |
| Product Dimensions | 20"W x 15"H |
Warranty and Support
For warranty information, replacement parts, or technical support, please refer to the contact details provided in your product packaging or visit the official SOLO website. SOLO offers reliable customer service to assist with any product-related inquiries.
Product Videos
Video 1: Solo Sprayer Overview. This video provides a general overview of the sprayer's features and components.
Video 2: NEWEST NEED - SOLO 475-B Backpack Sprayer, 4 Gallon. This video demonstrates the features and usage of the SOLO 475-B Backpack Sprayer.