Product Overview
The Chapin 61900 Tree and Turf Pro Commercial Backpack Sprayer is designed for professional use in lawn and garden applications. It features a 4-gallon translucent tank, a stainless steel wand, and a versatile nozzle system for various chemical applications. The sprayer is built with chemical-resistant seals and gaskets to ensure durability and compatibility with common lawn and garden chemicals.
Figure 1: Chapin 61900 Tree and Turf Pro Commercial Backpack Sprayer. This image displays the complete sprayer unit with its translucent tank, padded straps, wand, and various nozzles.
Setup and Assembly
The Chapin 61900 backpack sprayer comes largely pre-assembled. Minor assembly is required for the pump handle and wand. Refer to the included instruction manual for detailed diagrams and steps.
Attaching the Pump Handle
The pump handle can be installed on either the left or right side of the sprayer, depending on user preference. Use the provided nuts and bolts to secure the handle to the sprayer's frame. Ensure all connections are tightened securely.
Figure 2: Rear view of the sprayer showing the pump handle attachment point. The handle can be mounted on either side for user convenience.
Attaching the Wand
Connect the stainless steel wand to the handle. Ensure the rubber gasket is properly seated to prevent leaks. Screw the wand firmly onto the handle connection point.
Figure 3: Close-up of the stainless steel wand and handle connection. The wand provides extended reach for various spraying tasks.
Adjusting Shoulder Straps
The sprayer features adjustable padded shoulder straps and lumbar support for comfortable carrying. Adjust the straps to ensure the tank sits comfortably and securely on your back, distributing weight evenly.
Figure 4: Detail of the deluxe padded shoulder straps and lumbar support. These straps are fully adjustable for user comfort during extended use.
Operating Instructions
Filling the Tank
The 4-gallon translucent tank allows for easy monitoring of liquid levels. Use the 5-inch opening with the integrated filter cap to prevent debris from entering the tank during filling. Always mix chemicals according to manufacturer instructions. It is recommended to fill the tank halfway with water, add the chemical concentrate, and then fill to the desired level to ensure proper mixing.
Figure 5: The translucent tank with visible gallon and liter measurements. This allows for precise filling and monitoring of liquid levels.
Pumping and Spraying
Pump the handle to build pressure within the tank. The handle features a comfortable grip and a lock-on feature for continuous spraying, reducing hand fatigue. The integrated pressure gauge on the handle allows you to monitor the pressure for consistent application.
Figure 6: User operating the Chapin 61900 sprayer. The ergonomic design and adjustable straps make it comfortable for extended use in various applications.
Nozzles and Spray Patterns
The Chapin 61900 includes three types of nozzles to suit different spraying needs:
- Adjustable Brass Nozzle: Provides a spray pattern from a coarse stream to a fine cone.
- Adjustable Poly-Cone Nozzle: Offers a versatile spray from a fine mist to a solid stream.
- Poly Fan Nozzle: Delivers a wide, flat fan spray pattern, ideal for broad coverage.
Nozzles can be easily interchanged by unscrewing the current nozzle and screwing on the desired one. Ensure the rubber gasket is in place for a secure, leak-free connection.
Figure 7: The three included nozzles: Poly Fan, Adjustable Brass, and Poly Cone. These provide flexibility for various spraying tasks, from fine misting to targeted streams.
Optional CFValve™ (Control Flow Valve)
The optional CFValve™ maintains constant pressure and consistent flow to the nozzle, even with changing pressure from manual or mechanical pump action. This helps achieve uniform coverage and can reduce chemical waste. Install it by unscrewing the existing nozzle assembly and screwing the CFValve™ in place, then reattaching the desired nozzle to the CFValve™.
Figure 8: The optional CFValve™ (Control Flow Valve) for consistent spray patterns. This valve helps maintain uniform application regardless of pumping pressure.
Filtration System
The Chapin 61900 features a 3-stage standard filtration system to prevent clogs and ensure smooth operation:
- Cap Filter: Located in the tank cap, this removable and cleanable filter limits debris from entering the tank during filling.
- In-tank Filter: Positioned inside the tank near the pump, this removable and cleanable filter protects the hose from clogs.
- Shut-off Filter: Found within the shut-off handle, this removable and cleanable filter protects the nozzle from clogs.
Figure 9: Illustration of the 3-stage filtration system, including the cap filter, in-tank filter, and shut-off filter. These filters work together to prevent clogging and ensure smooth operation.
Maintenance
Regular maintenance ensures the longevity and optimal performance of your sprayer. After each use, thoroughly rinse the tank, hose, and wand with clean water. Periodically remove and clean all three filters (cap, in-tank, and shut-off) to prevent buildup and clogs. Store the sprayer in a clean, dry place, ideally with the wand secured in its designated holder on the lid.
Troubleshooting
If you experience issues with your sprayer, first check all three filters for clogs and clean them if necessary. Ensure all connections (hose to tank, wand to handle) are secure and leak-free. Verify that the pump handle is properly installed and operating to build sufficient pressure. For further assistance, refer to the detailed troubleshooting guide in the user manual or contact Chapin International customer support.
Specifications
| Feature | Detail |
|---|---|
| Brand | Chapin International |
| Model Name | 61900 |
| Tank Volume | 4 Gallons (15 Liters) |
| Material | Plastic (Translucent White) |
| Item Weight | 11 Pounds |
| Product Dimensions | 9"W x 21.9"H |
| Wand Material | Stainless Steel |
| Nozzles Included | Adjustable Brass, Adjustable Poly-Cone, Poly Fan |
| Filtration System | 3-Stage Standard (Cap, In-tank, Shut-off) |
| Power Source | Manual |
| Maximum Pressure | 60 PSI |
| Hose Length | 48 Inches |
| Country of Origin | USA (with global materials) |
Warranty and Support
The Chapin 61900 Backpack Sprayer is backed by Chapin’s 5-year limited warranty. For any product inquiries, technical support, or warranty claims, please contact Chapin International's USA-based customer service team. Product registration is also available on their official website.
Contact Information:
- Customer Service: 800-950-4458 (Mon – Fri, 8 a.m. - 5 p.m. EST)
- Official Website: chapinmfg.com
Figure 10: Chapin products are proudly made in the USA with global materials, ensuring quality and supporting domestic manufacturing.