Jet Tools J-4200A, J-4400A, J-4401A, J-4300A Troubleshooting, Symptom Possible Cause Correction

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10.0Troubleshooting

Symptom

 

Possible Cause

Correction

 

 

 

Motor will not run

Voltage is too low.

Check power supply for proper voltage.

 

 

 

 

 

 

Branch circuit fuse is blown or circuit

Determine the reason for the blown fuse or

 

 

breaker is tripped.

tripped circuit breaker; then replace the fuse

 

 

 

or reset the breaker.

 

 

Branch is shut down for service.

Check all personnel and machines on

 

 

 

the branch to be certain someone has

 

 

 

not shut down the branch for service. DO

 

 

 

NOT replace the fuse or reset the breaker

 

 

 

unless you are certain no personnel are

 

 

 

working on the machines, wires or controls in

 

 

 

the circuit.

 

 

Open circuit in the wiring.

Inspect all wire connections for loose or

 

 

 

open connections.

 

 

Motor is defective.

Replace the motor.

 

 

 

 

 

 

Switch is defective.

Replace the switch.

 

 

 

Motor stalls easily

Low voltage.

Check for proper voltage at the motor;

 

 

 

correct as necessary.

 

 

Fuse blown (three phase motors only).

Replace the blown fuse.

 

 

 

 

 

 

Improper wiring.

Check for proper connections.

 

 

 

 

Abrasive belt

or disc

Belt is slipping.

Replace the belt.

slows down

although

 

 

motor keeps running at

 

 

working speed

 

 

 

Poor tracking

 

Tracking is out of adjustment.

Adjust the belt tracking.

 

 

 

 

 

 

Too much belt tension.

Loosen the tension until the belt is just taut.

 

 

 

 

 

 

Not enough belt tension.

Tighten the tension until the belt is more taut.

 

 

 

 

 

 

Belt is jointed improperly.

Check belt for an irregular seam or shape.

 

 

 

 

 

 

Lack of crown on the drive roller.

Remove the belt and put a straight edge

 

 

 

along the drive roller. There should be a

 

 

 

slight crown (high spot toward the middle of

 

 

 

the roller.) If the crown has worn away,

 

 

 

replace the roller.

 

 

Worn bearings.

Check all the bearings for excessive heat or

 

 

 

loose shafts. Replace if necessary.

Unsteady belt

 

Slack in the abrasive belt

Adjust the belt tension.

 

 

 

 

Short belt life

 

Excessive pressure applied while

Allow the belt to do the cutting. Excessive

 

 

grinding.

pressure only dulls the grit and removes it

 

 

 

from the cloth.

 

 

Working on only one side of the belt or

Use all surface areas of the abrasive cloth.

 

 

only in one area of the disc.

 

 

 

Incorrect abrasive material or grit size.

Check with your abrasives supplier for

 

 

 

recommendations on the type and

 

 

 

coarseness of the abrasive required for the

 

 

 

workpieces you are sanding or grinding.

CAUTION: For all of the electrical faults and corrections in the above table JET recommends the use of a qualified and licensed electrician for all circuit tracing, diagnosis and repair.

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Contents Part No. M-414551 Models J-4200A 4300A 4400A 4200A-2 4301A 4401A 4202AWalter Meier Manufacturing Inc More Information Warranty and ServiceTable of contents General Machinery Warnings Safety WarningsGeneral Cautions General Electrical Cautions Wire SizesSafety Requirements for Abrasive Sanding Machines Machine and Manual Overview Disc/Belt Sander Disc Sander SpecificationsModel Stock No Using the indexing lock handle Adjusting the belt sander tableAdjusting the belt sander arm Operating instructionsTo adjust to horizontal Adjusting disc sander tableTo adjust arm to any angle between vertical and horizontal Use of the Miter GaugeTrack mechanism maintenance MaintenanceBelt replacement Replacing the v-belt Installing abrasive discsRotating the machine casting to remove the disc guard bolts Basic setup Machine setupDisc table angle adjustment Disc table miter parallelism adjustmentBelt table angle adjustment Disc table gap adjustmentBelt table miter slot parallelism adjustment Electrical connections Adjusting or replacing the platenThree phase electrical hookup Single phase electrical hookupMotor rotation Voltage conversionSymptom Possible Cause Correction TroubleshootingModel J-4200A Belt and Disc Sander Assembly Exploded View Replacement partsIndex No Description Size Qty Model J-4200A Belt and Disc Sander Assembly Parts ListShss Model J-4300A Belt Sander Assembly Exploded View Shcs Model J-4300A Belt Sander Assembly Parts List300x7.5mm,t=2mm Model J-4400A Disc Sander Assembly Exploded View Model J-4400A Disc Sander Assembly Parts List Base Assembly All 1 Phase Models Exploded View Description Size Qty Base Assembly All 1 Phase Models Parts ListBase Assembly All 3 Phase Models Exploded View Base Assembly All 3 Phase Models Parts List Electrical schematic single phase Electrical schematic 3 phase New Sanford Road LaVergne, Tennessee Phone

J-4301A, J-4300A, J-4202A, J-4401A, J-4400A specifications

Jet Tools is a renowned name in the woodworking and metalworking industries, known for delivering high-quality machinery and tools. Among their notable products are the J-4200A, J-4200A-2, J-4400A, J-4401A, and J-4202A, all of which exhibit excellent craftsmanship and innovative features.

The Jet J-4200A is a well-regarded 6-inch jointer designed to give woodworkers precision and versatility. It features a heavy-duty cast iron table that offers stability and reduces vibration during operation. The 1-horsepower motor provides ample power for jointing hardwoods, while the easy-to-adjust fence ensures accurate jointing angles up to 45 degrees. The combination of a built-in dust port and a smooth operation makes it a favorite among professionals and hobbyists alike.

The J-4200A-2 takes the functionality of the J-4200A up a notch by including an upgraded 2-horsepower motor. This increased power allows for smoother operation and the capability to handle larger workpieces with ease. The J-4200A-2 also features an improved blade set that enhances cutting efficiency, allowing users to achieve finer finishes with less effort.

On the larger end of the spectrum, the Jet J-4400A serves as a robust 8-inch jointer that combines additional surface area with heavy-duty construction. This model features a precision-ground cast iron table and an extra-long bed, allowing for exceptional control over larger projects. The J-4400A's powerful 1.5-horsepower motor, complemented by its impressive feed rate, makes it ideal for serious woodworkers looking to take on demanding tasks.

The J-4401A, another variant in this lineup, boasts similar features to the J-4400A but introduces a unique spiral cutterhead. This innovative technology reduces noise and vibration, providing a smoother finish while extending the life of the blades. This model is especially appreciated by those who frequently work with various types of wood, as it minimizes tear-out and produces cleaner cuts.

Finally, the Jet J-4202A is designed as a versatile machine for both jointer and planer applications. It offers a space-saving solution for workshops where floor area is a concern. With its dual functionality, the J-4202A allows users to switch between operations seamlessly, emphasizing Jet's commitment to innovation and practicality in woodworking machinery.

In summary, the Jet Tools J-4200A series stands out for its combination of powerful motors, durable construction, and precision engineering. Each model is built to cater to the varying needs of woodworkers, ensuring that performance, versatility, and user-friendliness are at the forefront of their design. By integrating technology and thoughtful features, Jet Tools continues to support the craftsmanship of woodworking enthusiasts and professionals alike.
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