Powermatic 720HD operating instructions Troubleshooting, Replacement Parts, Probable Cause Remedy

Page 18

Troubleshooting

Trouble

Mortiser will not start.

Drill bit does not come up to speed.

Mortiser vibrates excessively.

Noisy Operation.

Workpiece Burns.

Drill bit wanders.

Wood splinters on the underside.

Drill bit binds in workpiece.

Probable Cause

Remedy

 

 

No incoming power.

Check all plug connections.

 

 

Fuse blown, or circuit breaker tripped.

Replace fuse, or reset circuit breaker.

 

 

Cord damaged.

Replace cord.

 

 

Motor bad.

Contact WMH technical service.

 

 

Extension cord too light or too long.

Replace with adequate size and

length cord.

 

 

 

Low current.

Contact a qualified electrician.

 

 

Stand on uneven surface.

Machine should be placed on level

floor; use shims if necessary.

 

 

 

Auger contacting chisel.

Increase offset of auger in relation to

chisel. See page 9.

 

 

 

Chips not clearing from hole or auger.

Retract auger frequently to remove

chips. Make sure chisel slot opens

 

toward area already cut.

 

 

Dull auger.

Resharpen, or replace auger.

 

 

Feeding auger into workpiece too

Increase feed rate.

slowly.

 

 

 

Auger sharpened incorrectly.

Resharpen auger correctly (page 17).

 

 

Chuck jaws not tight.

Tighten chuck jaws.

 

 

Bent auger.

Replace auger.

 

 

Auger or chuck not installed properly.

Reinstall the chuck, or auger properly.

 

 

No backing board used.

Place a scrap board underneath the

workpiece to prevent splintering.

 

 

 

Workpiece not clamped properly,

Support or clamp workpiece firmly.

pinching the auger.

 

 

 

Excessive feed rate.

Decrease feed rate.

 

 

Chuck jaws not tight.

Tighten chuck jaws.

 

 

Replacement Parts

Replacement parts are listed on the following pages. To order parts or reach our service department, call 1-800-274-6848 between 7:30 a.m. and 5:30 p.m. (CST), Monday through Friday. Having the Model Number and Serial Number of your machine available when you call will allow us to serve you quickly and accurately.

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Contents WMH Tool GROUP, Inc Part No. M-1791309Warranty and Service More InformationTable of Contents Page Page Introduction Specifications Contents of the Shipping Container UnpackingInstalling Wood Table AssemblyInstalling Handle Tools required for assemblyInstalling Bushing, Chisel and Auger Grounding InstructionsExtension cords FeetSquaring Table To Chisel AdjustmentsSetting Table to Vertical Position Table Removal and StorageDepth Setting Rod Chuck Extension AdaptorHead Movement Setting Lateral Stops ClampStock Stop Chisel Parallel to Workpiece Re-setting the HeadGib Adjustment Lower Work SupportGib for Front-to-Back Movement Operating ControlsTool Storage Gib for Lateral MovementMaintenance OperationChisel Sharpening Chisel and AugerLubrication AugerTrouble TroubleshootingReplacement Parts Probable Cause Remedy720HD Heavy Duty Mortiser Parts List 720HD Heavy Duty Mortiser Index No. Part No Description Size Qty720HD-157 720HD-1116 Electrical Connections WMH Tool Group, Inc

720HD specifications

The Powermatic 720HD is a robust industrial-grade wood lathe designed for serious woodworkers and professionals seeking precision and versatility in their turning projects. One of its standout features is the 3 HP motor, which delivers powerful performance for both heavy and intricate turning tasks. This motor, along with the variable speed controls, allows users to adjust speeds smoothly from 50 to 3200 RPM, accommodating a wide range of materials and techniques.

A key technology incorporated in the Powermatic 720HD is its Electronic Variable Speed (EVS) system. This innovative feature enables users to effortlessly change the speed settings with a few simple turns of a dial, providing a level of convenience and efficiency that is essential in production environments. Additionally, the heavy-duty spindle, measuring 1.25 inches in diameter, contributes to the overall stability and strength of the lathe, allowing for larger workpieces and more aggressive cuts without compromising performance.

Another impressive characteristic of the Powermatic 720HD is its robust construction. Built with a cast-iron bed, this lathe ensures exceptional stability and reduces vibrations during operation. This solid foundation is crucial for achieving a smooth finish on workpieces, as it minimizes the chance of chattering or movement while turning.

The lathe features an innovative tool rest that can be easily adjusted and repositioned to accommodate various turning angles and techniques. This flexibility is crucial for woodturners who require precision and adaptability in their setups. Moreover, the large, easy-to-read digital readout displays the current speed, making it easier for users to monitor and adjust their settings on the fly.

Safety is a priority with the Powermatic 720HD, evident in its thoughtfully designed features such as the emergency stop button and the hinged motor cover, which provides easy access while ensuring full protection when not in use. The lathe also offers a generous 38-inch distance between centers, allowing for considerable workpiece lengths, making it ideal for bowl and vessel turning.

In summary, the Powermatic 720HD is a powerful and versatile wood lathe designed with quality and user convenience in mind. Its combination of a robust motor, advanced electronic speed control, and durable construction makes it a top choice for both professional and hobbyist woodworkers looking to elevate their turning capabilities to new heights.
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