Qual Craft 2420 - User Manual

Aluminum
Ladder Jacks
Two Rung Short Body
Model # 2420
Three Rung Long Body
Model # 2430
MIG welded and riv et ed con struc tion for strength
and du ra bil i ty. This high quality aluminum ladder
jack will work on ei ther the in side or the outside of
the ladder's face, and will ac com mo date up to an
18” wide plank, and is ad just able to  t round or
“D” rung lad ders.
LADDER JACKS
Model #2420, #2430, #2400
LADDER
ACCESSORIES
Customer Support and Ordering In for ma tion
781-344-1000 • www.qualcraft.com
Product Speci cations
Model # 2400 2420 2430
Description: Side Rail Two Rung Three Rung
Steel Short Body Long Body
Unit Pack: 1 1 1
Weight per Pack: 11.6 Pounds 4.5 Pounds 5.5 Pounds
Cu. Ft. per Pack: .79 1.15 cu. ft. 1.77 cu. ft.
Two Rung Short Body
Three Rung Long Body
Side Rail Ladder Jack
Model #2400
These all steel con struct ed jacks fea ture capacity
for a 20” work platform, and  t single or double
side rail ladders. Works in side or outside lad der,
and adjusts to  t any pitch. Capacity is two work-
ers plus 75lbs. per staging, with no more than 8
feet spac ing be tween jacks. Plat form must be fully
decked with 2” thick planks, and is limited for use
to 20 feet above ground. Folds for convenient
stor age and trans port.

Summary

Ladder Jacks

Aluminum Ladder Jacks

High-quality aluminum ladder jacks for various rung types.

Side Rail Ladder Jack Model #2400

All steel constructed jacks for side rail ladders.

Product Specifications

Detailed specifications for different ladder jack models.

Product Safety Warning

Crucial safety warning regarding product use and compliance.

Ladder Jack Safety and Setup Instructions

Capacity and Ladder Requirements

Defines load capacity and ladder compatibility for safe use.

Ladder and Jack Installation

Step-by-step guidance on ladder setup and jack attachment.

Proper Ladder Setup

Correct ladder positioning for secure and effective use.

General Use Instructions

Guidelines for operating ladder jacks safely and correctly.

Care and Maintenance

Procedures for maintaining ladder jacks for longevity and safety.

Electrical and Acid Safety Cautions

Important warnings about electrical and acid hazards.

Overview

1. Function Description
2. Important Technical Specifications
3. General
4. Model #2400 (Side Rail Steel Ladder Jack)
5. Model #2420 (Two Rung Short Body Aluminum Ladder Jack)
6. Model #2430 (Three Rung Long Body Aluminum Ladder Jack)
7. Usage Features
8. Setting Up the Ladder
9. Attaching Ladder Jacks
10. Setting the Platform
11. Safety Warnings
12. Maintenance Features
13. Care and Maintenance

The device described in the manual is a Ladder Jack, available in several models: #2400 (Side Rail Steel Ladder Jack), #2420 (Two Rung Short Body Aluminum Ladder Jack), and #2430 (Three Rung Long Body Aluminum Ladder Jack). These devices are designed to create a scaffold platform using ladders, allowing workers to access elevated work areas.

Function Description:

Ladder jacks are scaffold brackets that attach to ladders, providing support for a work platform (plank). This system allows for temporary elevated staging for tasks requiring access above ground level. The #2400 model is an all-steel constructed side rail ladder jack, while the #2420 and #2430 models are aluminum rung-style ladder jacks. All models are designed to work on either the inside or outside face of the ladder, and can accommodate a work platform. The #2400 model is specifically designed for wooden walk planks, while the aluminum models (#2420, #2430) are suitable for use with aluminum or fiberglass ladders. The ladder jacks adjust to fit various ladder types and pitches, ensuring a level platform.

Important Technical Specifications:

General:

• Capacity: Two men per staging plus 75 pounds (total load not to exceed 250 pounds on one ladder jack and ladder).
• Platform Width Accommodation: Up to an 18" wide plank.
• Maximum Height of Use: Limited for use to 20 feet above ground (16 feet in California).
• Plank Spacing: No more than 8 feet spacing between jacks when using wooden walk planks.
• Plank Requirements: Platform must be fully decked with 2” thick planks. Planking should not be less than 2" x 10" nominal thickness. Always use two planks to fully deck the platform arms (18" minimum width).
• Ladder Pitch: Ladders must be erected at a pitch of 75 1/2 degrees, with the distance between the ladder base and the vertical wall being one-quarter the working length of the ladder.

Model #2400 (Side Rail Steel Ladder Jack):

• Construction: All steel constructed.
• Ladder Compatibility: Use on Industrial grade, 250 pound rated Type 1 or 300 pound rated Type 1A aluminum or wood ladders. Do Not Use with Fiberglass Ladders.
• Plank Compatibility: This style ladder jack should be used only with wooden walk planks.
• Weight per Pack: 11.6 Pounds.
• Cu. Ft. per Pack: .79.
• Features: Works inside or outside ladder, adjusts to fit any pitch. Folds for convenient storage and transport. Rectangular bars attach to the ladder by capturing side-rails and resting on a rung. Round hook-shaped bars are placed around side-rails, resting above rectangular bars. Gusset plate adjusts to create a level platform.

Model #2420 (Two Rung Short Body Aluminum Ladder Jack):

• Construction: MIG welded and riveted aluminum.
• Ladder Compatibility: Use on Industrial grade, 250 pound rated Type 1 or 300 pound rated Type 1A aluminum or Fiberglass ladders. Do Not Use with Wood Ladders.
• Weight per Pack: 4.5 Pounds.
• Cu. Ft. per Pack: 1.15 cu. ft.
• Features: Works on either the inside or outside of the ladder's face. Adjustable to fit round or "D" rung ladders. Rung support arms seat fully onto ladder rungs. Wing nut for secure tightening.

Model #2430 (Three Rung Long Body Aluminum Ladder Jack):

• Construction: MIG welded and riveted aluminum.
• Ladder Compatibility: Use on Industrial grade, 250 pound rated Type 1 or 300 pound rated Type 1A aluminum or Fiberglass ladders. Do Not Use with Wood Ladders.
• Weight per Pack: 5.5 Pounds.
• Cu. Ft. per Pack: 1.77 cu. ft.
• Features: Works on either the inside or outside of the ladder's face. Adjustable to fit round or "D" rung ladders. Rung support arms seat fully onto ladder rungs. Wing nut for secure tightening.

Usage Features:

Setting Up the Ladder:

1. Secure Footing: Insure both ladder feet are secured firmly at ground level. Set feet into the ground 3" to 4" on earthen bases; use proper cleats on solid bases.
2. Top Section: Top section of both ladders should rest flat against the building. Tie down the top of the ladder to prevent slipping.
3. Pitch: Erect ladder at a pitch of 75 1/2 degrees, with the base one-quarter of the working length from the vertical wall.

Attaching Ladder Jacks:

• General: Inspect all scaffold components for damage before each use. Test all working parts and ensure all nuts & bolts are tight. Do not substitute parts.
• Placement: Can be installed on either the inside or outside of the ladder, depending on the distance to the work wall.
• Secure Seating: Ensure rung support arms (for #2420, #2430) or rectangular bars (for #2400) seat fully onto the ladder rungs/side-rails.
• Level Platform: Adjust the ladder jack (gusset plate for #2400, support arm for #2420, #2430) to ensure the platform arms are parallel to the ground, creating a level platform. Securely tighten wing nut (for #2420, #2430) to prevent slippage.
• Rung Support Opening: Do not use if ladder jack top rung support opening is over 2-1/4 inches (for #2420, #2430).
• Overload Prevention: Do not overload; do not exceed a 250 pound load on one ladder jack and ladder.
• Number of Jacks: Only one set of ladder jacks can be used between any two ladders. Do not install more than one ladder jack per ladder.
• Fall Protection: Use fall protection devices as prescribed by local, state, or federal safety requirements when working height exceeds 6 feet above the ground.

Setting the Platform:

• Horizontal: Adjust ladder jack so that walk plank is horizontal.
• Support: Scaffold plank must be supported at least 12 inches, but not more than 18 inches from each end, and securely placed to prevent slipping.
• Plank Overlap: Overlap planks 12" to 18" on both ends.
• Extension Planks: Do not use extension planks on ladder jack scaffolds.
• Plank Retaining Tab: Do not step or stand on plank retaining tab (Model #2420 & 2430).

Safety Warnings:

• Damage: Do not use if parts are bent, cracked, or damaged. Mark such ladder jacks "DANGEROUS – DO NOT USE" and discard or contact manufacturer.
• Electrical Conductivity: Metal conducts electricity. Keep metal ladder jacks away from electrical circuits.
• Acid Damage: Acid damages aluminum. Never use the ladder jack when using acid.
• Regulations: Must be used in strict compliance with Local, State & Federal OSHA Regulations. Be safety conscious.
• Wet/Frozen Conditions: Do not use if scaffold is wet or frozen.

Maintenance Features:

Care and Maintenance:

• Pre/Post-Use Inspection: Inspect ladder jack scaffold before and after each use. Check for damage, deformation, or rusting.
• Tightness: Ensure all nuts & bolts are tight before each use.
• Discarding: Discard if necessary. Do not throw or drop from building or onto a truck.
• Handling: Always handle with care.
• Temperature Exposure: Do not use if ladder jack has been exposed to extreme heat or cold; discard at once.
• Training: Federal Regulations require the user to have knowledge of all regulations that apply to the use and care of this product, and that the employer provide training.

Qual Craft 2420 Specifications

General

Brand	Qual Craft
Model	2420
Category	Jacks
Language	English