6428 - Agricultural sprayer Chapin - Free user manual and instructions

Brand	Chapin
Model	6428
Product Type	Agricultural Sprayer
Category	Boom Sprayer
Recommended Use	Agricultural surface treatment, ATV/UTV mount
Boom Length	7 feet (2 meters)
Number of Nozzles	2 nozzles (standard)
Nozzle Type	Flat fan nozzles (ref. 013665 green, 015525 blue)
Operating Pressure	10 to 30 PSI (0.7 to 2.1 bar)
Flow per Nozzle (green nozzle at 10/20/30 PSI)	0.23 / 0.36 / 0.45 GPM (0.87 / 1.36 / 1.70 L/min)
Flow per Nozzle (blue nozzle at 10/20/30 PSI)	0.43 / 0.65 / 0.83 GPM (1.63 / 2.46 / 3.14 L/min)
Recommended Spray Height	12 to 24 inches (30 to 60 cm) from ground
Minimum System Flow	1.8 GPM (0.4 m³/h)
Material	Steel (boom frame), rubber (hose)
Mounting	On ATV/UTV mount (Chapin mounting bracket ref. 6330 recommended)
Kit Contents	Boom, frame, vertical brackets, swivel nut, hardware bag with nozzle, hose
Maintenance and Cleaning	Rinse with water after each use, neutralizing agent recommended for stubborn residues
Safety Precautions	Read instructions carefully before use; improper use can cause injury or failure
Spare Parts Available	Yes, references listed in the manual (hose, brackets, frame kit, swivel nut, nozzles)
Repairability	Regular cleaning of nozzles; do not use metal objects to unclog them

Frequently Asked Questions - 6428 Chapin

How to assemble the spray boom on my ATV?

Attach the vertical brackets (part 3) to the mounting bracket using the provided bolts and nuts. Then attach the horizontal frame (part 4) to the brackets at the desired height from the three top holes (recommended height: 12 to 24 inches from the ground). Finally, thread the swivel nut (part 5) onto the water source.

What is the recommended operating pressure?

The operating pressure is between 10 and 30 PSI (0.7 to 2.1 bar). The minimum flow required for the system is 1.8 GPM (0.4 m³/h).

How to choose the right nozzle for my application?

Use the nozzle flow rate table: the green nozzle (ref. 013665) delivers 0.23 to 0.45 GPM depending on pressure, while the blue nozzle (ref. 015525) delivers 0.43 to 0.83 GPM. Choose based on the product being sprayed and the desired flow rate.

At what height should I position the boom?

The recommended height is 12 to 24 inches (30 to 60 cm) from the ground. Adjust the boom for uniform coverage: if dry streaks appear, raise it; if there is excess solution, lower it. Generally, the ideal height is between 13 and 18 inches.

How to clean the sprayer after use?

Rinse thoroughly with clean water through the tank, pump, hoses, and boom. Use a neutralizing agent (like Nutra-Sol, detergent, or ammonia) to remove stubborn residues. Drain the system completely, including the nozzles. Never clean nozzles with a metal object.

How to store the sprayer at the end of the season?

After thorough cleaning, add a permanent antifreeze to the final rinse to leave a rust-inhibiting film. Drain the tank, pump, and hoses. Keep the manual in a safe place for future reference.

What to do if a nozzle is clogged?

Never use metal objects to unclog a nozzle. Rinse it with clean water or use a soft brush. If necessary, replace the nozzle with a new one (ref. 013665 green or 015525 blue).

What are the important safety precautions?

Read all instructions carefully before use. Improper use can result in product failure or injury. Wear appropriate protective equipment when handling chemicals.

Can I use the boom on a Chapin sprayer other than the original?

Yes, the boom can be attached to a Chapin spot sprayer, lawn trailer, three-point sprayer, or ATV kit. A Chapin mounting bracket (P/N 6330) may be required for secure ATV/UTV mounting.

Where to find spare parts?

Spare parts are listed in the manual: hose (RP00001), hardware bag with nozzle (6-9100), vertical mounting bracket (6-9099), frame kit (6-9097), swivel nut (6-9098). Contact Chapin at 800-950-4458 to order.

USER MANUAL 6428 Chapin

DO NOT RETURN TO THE STORE.

Please call 800-950-4458 or visit www.chapinmfg.com if you are missing any parts, having trouble assembling, or have any questions regarding the safe operation of this product.

MODEL 6428

WARNING

Carefully Read These Instructions Before Use

015832 R0318

WARNING

IMPROPER USE OR FAILURE TO FOLLOW INSTRUCTIONS CAN RESULT IN PRODUCT FAILURE OR INJURIES. FOR SAFE USE OF THIS PRODUCT YOU MUST READ AND FOLLOW ALL INSTRUCTIONS BEFORE USING.

INTRODUCTION

The purpose of this manual is to assist you in the assembly, operation and maintenance of your sprayer or accessories. Please read through this manual completely too fully understand how to operate and maintain your equipment. This product has been manufactured to provide years of dependable service, proper operation and maintenance will ensure its dependability. Keep your manual in a safe, convenient place for future reference. Always mention the model and part number in any correspondence.

ASSEMBLY INSTRUCTIONS

The following instructions are intended for the attachment of the seven foot boom to a Chapin spot sprayer, lawn trailer, 3-point sprayer or ATV kit.

Spray Boom Attachment

NOTE: Depending on ATV/UTV, Chapin mounting bracket (P/N 6330, not shown) may be necessary for secure mounting.

1. Using four of the supplied bolts and nuts (items 1 & 2), attach the two Upright Attaching Brackets (item 3) to a mounting bracket assembly (sold separately Chapin P/N 6330), or to existing ATV/UTV rack.
2. Using two of the supplied bolts and nuts (items 1 & 2), attach the Horizontal Boom Frame (item 4) to the two Upright Attaching Brackets (item 3). Depending on the height one wishes to set the boom to, use one of the top three holes of the Upright Attaching Brackets. Recommended nozzle height is 12-24 inches from the ground.
3. Thread the Swivel Nut (item 5) to the water source.

**Note: with the blue stock nozzle it is recommended to not use boom assembly with a system of less than 1.7 GPM and no less than 1.0gpm with the green nozzle.

OPERATING INSTRUCTIONS

Using the boom nozzles

1. Choose the nozzle best equipped for the application at hand. See Nozzle Flow Chart for flow rates and spray angle.
2. While spraying water only raise or lower the boom to acquire the desired coverage. If you see dry spots while spraying you need to raise the boom; too much solution in the pattern areas means you need to lower the boom. Generally, the proper height will be from 13 to 18 inches off the ground.
3. Reference the product you're spraying for desired mix ratio.

NOZZLE FLOW RATE CHART

Nozzle	Pressure (PSI)	Flow Rate (GPM)
Green P/N 013665	10	0.23
	20	0.36
	30	0.45
Blue P/N 015525	10	0.43
	20	0.65
	30	0.83

* Note: all flow rates are per nozzle

CLEANING & STORAGE

Most spray materials are highly corrosive. The most important aspect of long dependable service from the sprayer is a thorough cleaning immediately following each use. In addition, the residue of one type of chemical could cause an undesirable effect when a different chemical is used for a different purpose.

The most effective cleaning method is to pump several rinses of clean water through the tank, pump, hoses, boom, spray gun, etc. A neutralizing agent such as a solution of Nutra-Sol, a detergent or household ammonia as recommended by the chemical manufacturer can assist in removal of a persistent chemical. When the system is thoroughly cleaned, drain the tank, suction line, pump hoses, etc.

The following steps should be followed for the maintenance and storage of your sprayer.

1. Wash and flush out sprayer after completion of each phase of your program. Flush out sprayer when changing chemicals. Use of a detergent is advisable if the chemical manufacturer does not make specific cleaning recommendations. Flush system completely, including nozzles. Never use metal objects to open clogged nozzles.

2. Clean sprayer thoroughly before storing at the end of the spraying season. Permanent type anti-freeze added to the final rinse will leave a rust inhibiting film in parts of the sprayer.

Ref. #	Part Number	QTY	Description
1	RP00001	1 Hose, Rubber, 3/8”
2	6-9100	1 Hardware Bag, with nozzle
3	6-9099	2 Upright Attachment Bracket
4	6-9097	1 Frame Kit
5	6-9098	1 Swivel Nut

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