Jet 10 Plus Service manual

Operating Instructions and Parts Manual
Drum Sander
Model: 10-20 Plus
Shown with optional accessories
WALTER MEIER (Manufacturing) Inc.
427 New Sanford Road
LaVergne, Tennessee 37086 Part No. M-628900
Ph.: 800-274-6848 Revision C1 01/2010
www.waltermeier.com Copyright © 2010 Walter Meier (Manufacturing) Inc.

2
Warranty and Service
Walter Meier (Manufacturing) Inc., warrants every product it sells. If one of our tools needs service or repair, one of
our Authorized Service Centers located throughout the United States can give you quick service. In most cases, any
of these Walter Meier Authorized Service Centers can authorize warranty repair, assist you in obtaining parts, or
perform routine maintenance and major repair on your JET
® tools. For the name of an Authorized Service Center in
your area call 1-800-274-6848.
MORE INFORMATION
Walter Meier is consistently adding new products to the line. For complete, up-to-date product information, check with
your local Walter Meier distributor, or visit waltermeier.com.
WARRANTY
JET products carry a limited warranty which varies in duration based upon the product (MW = Metalworking, WW =
Woodworking).
WHAT IS COVERED?
This warranty covers any defects in workmanship or materials subject to the exceptions stated below. Cutting tools,
abrasives and other consumables are excluded from warranty coverage.
WHO IS COVERED?
This warranty covers only the initial purchaser of the product.
WHAT IS THE PERIOD OF COVERAGE?
The general JET warranty lasts for the time period specified in the product literature of each product.
WHAT IS NOT COVERED?
Five Year Warranties do not cover woodworking (WW) products used for commercial, industrial or educational
purposes. Woodworking products with Five Year Warranties that are used for commercial, industrial or education
purposes revert to a One Year Warranty. This warranty does not cover defects due directly or indirectly to misuse,
abuse, negligence or accidents, normal wear-and-tear, improper repair or alterations, or lack of maintenance.
HOW TO GET SERVICE
The product or part must be returned for examination, postage prepaid, to a location designated by us. For the name
of the location nearest you, please call 1-800-274-6848.
You must provide proof of initial purchase date and an explanation of the complaint must accompany the
merchandise. If our inspection discloses a defect, we will repair or replace the product, or refund the purchase price,
at our option. We will return the repaired product or replacement at our expense unless it is determined by us that
there is no defect, or that the defect resulted from causes not within the scope of our warranty in which case we will,
at your direction, dispose of or return the product. In the event you choose to have the product returned, you will be
responsible for the shipping and handling costs of the return.
HOW STATE LAW APPLIES
This warranty gives you specific legal rights; you may also have other rights which vary from state to state.
LIMITATIONS ON THIS WARRANTY
WALTER MEIER (MANUFACTURING) INC., LIMITS ALL IMPLIED WARRANTIES TO THE PERIOD OF THE
LIMITED WARRANTY FOR EACH PRODUCT. EXCEPT AS STATED HEREIN, ANY IMPLIED WARRANTIES OR
MERCHANTABILITY AND FITNESS ARE EXCLUDED. SOME STATES DO NOT ALLOW LIMITATIONS ON HOW
LONG THE IMPLIED WARRANTY LASTS, SO THE ABOVE LIMITATION MAY NOT APPLY TO YOU.
WALTER MEIER SHALL IN NO EVENT BE LIABLE FOR DEATH, INJURIES TO PERSONS OR PROPERTY, OR
FOR INCIDENTAL, CONTINGENT, SPECIAL, OR CONSEQUENTIAL DAMAGES ARISING FROM THE USE OF
OUR PRODUCTS. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF INCIDENTAL OR
CONSEQUENTIAL DAMAGES, SO THE ABOVE LIMITATION OR EXCLUSION MAY NOT APPLY TO YOU.
Walter Meier sells through distributors only. The specifications in Walter Meier catalogs are given as general
information and are not binding. Members of Walter Meier reserve the right to effect at any time, without prior notice,
those alterations to parts, fittings, and accessory equipment which they may deem necessary for any reason
whatsoever. JET
® branded products are not sold in Canada by Walter Meier.

3
Table of Contents
Warranty and Service..........................................................................................................................2
Table of Contents ...............................................................................................................................3
Warnings............................................................................................................................................4
Introduction........................................................................................................................................6
Specifications.....................................................................................................................................6
Unpacking..........................................................................................................................................7
Contents of the Shipping Container ..................................................................................................7
Tools Required for Assembly ...........................................................................................................7
Assembly...........................................................................................................................................7
10-20 Plus Sander...........................................................................................................................7
Stand..............................................................................................................................................7
Infeed/Outfeed Extension Tables......................................................................................................7
Installing the Trackers
TM
...................................................................................................................8
Electrical............................................................................................................................................9
Electrical Requirements...................................................................................................................9
Electrical Connections .....................................................................................................................9
Extension Cords..............................................................................................................................9
Controls...........................................................................................................................................10
On/Off Switch................................................................................................................................10
Adjustments .....................................................................................................................................11
Drum Height Control......................................................................................................................11
Conveyor Belt Tension...................................................................................................................11
Conveyor Belt Tracking..................................................................................................................11
Drum Alignment ............................................................................................................................12
Wrapping Abrasive Strips...............................................................................................................13
Using the TUF Tool
TM
....................................................................................................................14
Connecting Sander to a Dust Collector ...........................................................................................15
Setting the DepthGauge................................................................................................................15
Setting the Depthof Cut.................................................................................................................15
Establishing the Proper Drum Height ..............................................................................................15
Abrasives.........................................................................................................................................16
Overview ......................................................................................................................................16
Selecting Drum Abrasives..............................................................................................................16
Selecting Abrasive Grits.................................................................................................................16
Cleaning Abrasive Strips................................................................................................................16
Stretching Abrasive Life.................................................................................................................16
Stock Feeding Angle .....................................................................................................................17
Multiple-Piece Sanding Runs .........................................................................................................17
Edge Sanding ...............................................................................................................................17
Sanding Imperfect Stock................................................................................................................17
Face Frames and Raised Panel Doors............................................................................................17
Maintenance ....................................................................................................................................17
Conveyor Belt Replacement...........................................................................................................18
Tension Roller Alignment...............................................................................................................18
Tension Roller Pressure Adjustment...............................................................................................18
Drum Height Control Adjustment ....................................................................................................18
Troubleshooting................................................................................................................................19
Parts................................................................................................................................................20
Parts List......................................................................................................................................20
Assembly Drawing.........................................................................................................................22
Optional Accessories ........................................................................................................................23
JET 10-20 Sander Accessories ......................................................................................................23
JET 10-20 Abrasives .....................................................................................................................23
Wiring Diagram.................................................................................................................................23
Replacement Parts...........................................................................................................................23

4
Warnings
1. Read and understand the entire owner's manual before attempting assembly or operation.
2. Read and understand the warnings posted on the machine and in this manual. Failure to comply with
all of these warnings may cause serious injury.
3. Replace the warning labels if they become obscured or removed.
4. This drum sander is designed and intended for use by properly trained and experienced personnel
only. If you are not familiar with the proper and safe operation of a drum sander, do not use until
proper training and knowledge have been obtained.
5. Do not use this machine for other than its intended use. If used for other purposes, Walter Meier
(Manufacturing) Inc., disclaims any real or implied warranty and holds itself harmless from any injury
that may result from that use.
6. Always wear approved safety glasses/face shields while using this machine. Everyday eyeglasses
only have impact resistant lenses; they are not safety glasses.
7. Before operating this machine, remove tie, rings, watches and other jewelry, and roll sleeves up past
the elbows. Remove all loose clothing and confine long hair. Non-slip footwear is recommended.
8. Wear ear protectors (plugs or muffs) during extended periods of operation.
9. This drum sander is to be used with wood and wood products only. Use of this drum sander and a
dust collector with metal products is a potential fire hazard.
10. Some dust created by power sanding, sawing, grinding, drilling and other construction activities
contain chemicals known to cause cancer, birth defects or other reproductive harm. Some examples
of these chemicals are:
•Lead from lead based paint.
•Crystalline silica from bricks, cement and other masonry products.
•Arsenic and chromium from chemically treated lumber.
Your risk of exposure varies, depending on how often you do this type of work. To reduce your
exposure to these chemicals: work in a well-ventilated area and work with approved safety
equipment, such as face or dust masks that are specifically designed to filter out microscopic
particles.
11. Do not operate this sander while tired or under the influence of drugs, alcohol or any medication.
12. Make certain the switch is in the OFF position before connecting the machine to the power supply.
13. Always sand with the grain of the wood.
14. Always feed stock against the rotation of the drum.
15. Do not sand pieces of material that are too small to be safely supported.
16. When sanding a large piece, provide additional support at table height.
17. Always connect and use a dust collector to the drum sander while operating.
18. Make certain the machine is properly grounded.
19. Make all machine adjustments or maintenance with the machine unplugged from the power source.
20. Remove adjusting keys and wrenches. Form a habit of checking to see that keys and adjusting
wrenches are removed from the machine before turning it on.
21. Keep machine guards in place at all times when the machine is in use. If removed for maintenance
purposes, use extreme caution and replace the guards immediately.
22. Make sure the drum sander is firmly secured to the stand or bench before use.

5
23. Check damaged parts. Before further use of the machine, a guard or other part that is damaged
should be carefully checked to determine that it will operate properly and perform its intended function
– check for alignment of moving parts, binding of moving parts, breakage of parts, mounting, and any
other conditions that may affect its operation. A guard or other part that is damaged should be
properly repaired or replaced.
24. Provide for adequate space surrounding work area and non-glare, overhead lighting.
25. Keep the floor around the machine clean and free of scrap material, oil and grease.
26. Keep visitors a safe distance from the work area. Keep children away.
27. Make your workshop child proof with padlocks, master switches or by removing starter keys.
28. Give your work undivided attention. Looking around, carrying on a conversation and “horse-play” are
careless acts that can result in serious injury.
29. Stand to one side of the conveyor and make sure no one else is standing in line with the conveyor
while feeding into the machine. The drum sander operates at high speed and should a part slip, it will
exit the machine at a high rate of speed and may result in injuries to anyone standing directly in front
of the infeed. (Keep the conveyor belt clean and check pin-roll adjustments). Maintain a balanced
stance at all times so that you do not fall or lean against the sanding drum or other moving parts. Do
not overreach or use excessive force to perform any machine operation.
30. Use the right tool. Don’t force a tool or attachment to do a job for which it was not designed. The right
tool will do the job better and safer at the rate for which it was designed.
31. Use recommended accessories; improper accessories may be hazardous.
32. Maintain tools with care. Keep tools sharp and clean for the best and safest performance. Follow
instructions for lubricating and changing accessories.
33. Never brush away sawdust while the machine is running. Use the correct speed and feed for the tool.
Be sure that the tool is the correct one for your operation.
34. Never stand on a machine. Serious injury could occur if the machine tipped or if the sanding drum is
unintentionally contacted.
35. Never leave the machine running unattended. Turn the power off and don’t leave the machine until it
comes to a complete stop.
36. All doors should be closed, all panels replaced and other safety guards should be in place before the
machine is started or operated.
37. Keep your hands clear when feeding parts onto the conveyor. The part will be forced down as it
begins to feed into the machine, causing a pinching action between the part and the table. Use
caution! Hands should be clear of the stock and the table to avoid pinching. Never reach into a
running machine. Turn off the electrical power and stop the machine before attempting to retrieve
parts from within it. Keep your hands away from the sanding area. Contact with internal moving parts
can result in the loss or injury to fingers, hands and arms.
38. Remove loose items and unnecessary work pieces from the area before starting the machine.
Familiarize yourself with the following safety notices used in this manual:
This means that if precautions are not heeded, it may result in minor injury and/or
possible machine damage.
This means that if precautions are not heeded, it may result in serious injury or possibly
even death.
- - SAVE THESE INSTRUCTIONS - -

6
Introduction
This manual is provided by JET covering the safe operation and maintenance procedures for a Model 10-
20 Plus Drum Sander. This manual contains instructions on installation, safety precautions, general
operating procedures, maintenance instructions and parts breakdown. This machine has been designed
and constructed to provide years of trouble free operation if used in accordance to instructions set forth in
this manual. If there are any questions or comments, please contact either your local supplier or Walter
Meier (Manufacturing) Inc. Walter Meier can also be reached at our web site: www.waltermeier.com.
Specifications
Model Number......................................................................................................................10-20 Plus
Stock Number .......................................................................................................................... 628900
Maximum Width (in).....................................................................................................20 (Two Passes)
Minimum Length (in).....................................................................................................................2-1/4
Maximum Thickness (in) .....................................................................................................................3
Minimum Thickness (in) .................................................................................................................1/32
Drum (in)...................................................................................................... 5 x 10 Extruded Aluminum
Drum Speed (RPM) ......................................................................................................................1700
Dust Chute (in)...................................................................................................................................4
Conveyor Motor..............................................................................43 inch-lb Torque, Direct Drive, D.C.
Conveyor Variable Feed Rate (FPM) ..............................................................................................0-12
Motor (TEFC).......................................................................................................1 HP, 1Ph, 115V only
Net Weight (lbs)................................................................................................................................96
The specifications in this manual are given as general information and are not binding. Walter Meier
reserves the right to effect, at any time and without prior notice, changes or alterations to parts, fittings,
and accessory equipment deemed necessary for any reason whatsoever.
Read and understand the entire contents of this manual before attempting
assembly or operation! Failure to comply may cause serious injury

7
Unpacking
Separate all parts from the packing material.
Check each part against the Contents of the
Shipping Container and make certain that all
items are accounted for before discarding any
packing material.
Report any damage to your distributor.
Contents of the Shipping Container
1 ea Sander Assembly (A)
1 ea Handwheel with Handle (B)
2 ea Trackers (C)
1 ea TUF Tool (D)
1 ea Abrasive Strip (wrapped on the drum)
1 ea Conveyor Belt (attached to the base)
1 ea Owner's Manual
1 ea Warranty Card
Hardware Bag (see Note)
4 ea 3/8”-16x5/8” Hex Cap Screws (E)
4 ea 3/8” Flat Washers (F)
Note: For attaching Sander to the optional Open
Stand
Optional Accessories
Optional Accessories are listed on page 23. To
purchase any of these accessories contact your
dealer.
Tools Required for Assembly
9/16" Wrench
No. 1 or No. 2 Cross Point Screwdriver
1/8" hex wrench
Assembly
10-20 Plus Sander
Attach the handwheel (B, Fig. 1) to the height
adjustment screw and tighten with a 1/8" hex
wrench.
Stand
1. If you purchased the optional 10-20 Stand
(A, Fig. 1), assemble it as described in the
manual included with the stand.
2. Mount the 10-20 Plus Sander on the stand
and secure with four 3/8”-16x5/8” Hex Cap
Screws and four 3/8” Flat Washers (Items
E, F, Contents of the Shipping Carton) and
tighten with a 9/16" wrench.
Contents of the Shipping Carton
Figure 1
Infeed/Outfeed Extension Tables
If you purchased the optional 10-20
Infeed/Outfeed Extension Table (not shown),
attach it to the 10-20 Plus Sander as described
in the manual that was included with the
extension tables.

8
Installing the Trackers
TM
Trackers dramatically reduce tracking
adjustments of the conveyor belt by guiding the
belt towards the center of the rollers and by
keeping the belt from running off the rollers.
The Trackers are installed on the underside of
the conveyor belt as follows:
1. Disconnect the machine from the power
source.
2. Raise the sanding drum to its highest
position (see Drum Height Control on
page 11).
3. Remove the tension from the conveyor belt
(Conveyor Belt Tension on page 11).
4. Referring to Figures 2 and 3: The tracker is
positioned on the underside of the conveyor
belt, on the infeed side of the sander,
(closest to the rubber covered drive roller
and gear motor). The back of the tracker is
magnetized and will stick to the sidewall of
the conveyor bed. Do not install the tracker if
the edge of the conveyor belt is damaged of
torn.
5. When the tracker is installed, slide the
conveyor belt into the bottom slot of the
tracker.
Note: When installed properly, only the
bottom lip of the tracker will be visible. The
top slot is to be used if the bottom slot wears
out.
6. When installing the second tracker, repeat
steps four and five. Use both trackers unless
the conveyor belt is damaged.
7. Make sure all of the switches are off.
Reconnect the power to the machine.
8. Tension the conveyor belt (see Conveyor
Belt Tension on page 11). With both trackers
installed, it is very important to have equal
tension on both sides of the conveyor belt.
Tighten both sides of the adjustment screws
until equal tension is obtained.
9. Turn the conveyor on full speed and
carefully place both hands on the conveyor
belt to check the tension. If the conveyor belt
can be stopped, continue increasing the
tension until the conveyor belt cannot be
stopped by placing both hands on the belt
while the conveyor is operating at full speed.
10. Continue to watch the tracking of the
conveyor belt and adjust it only if necessary;
do not allow the conveyor belt to buckle
under the conveyor bed.
Figure 2
Conveyor Drive Motor
Abrasive Conveyor Belt
Tracker
Tracker
Viewed from underneath
Figure 3

9
Electrical
Electrical Requirements
When connecting the drum sander to the power
source outlet, the outlet must be properly
grounded to protect the operator from electrical
shock.
In the event of a malfunction or breakdown,
grounding provides a path of least resistance for
electrical current to reduce the risk of electrical
shock. This machine is equipped with an electric
cord having an equipment-grounding conductor
to be inserted into an outlet that is properly
installed and grounded in accordance with all
local codes and ordinances.
Improper connection of the equipment grounding
conductor can result in a risk of electric shock.
The conductor with insulation having an outer
surface that is green (with or without yellow
stripes) is the equipment -grounding conductor.
If repair or replacement of the electric cord or
plug is necessary, do not connect the
equipment-grounding conductor to a live
terminal.
Plug power cord into a 110-120V properly
grounded outlet protected by a 14-amp fuse or
circuit breaker.
Do not touch the prongs of
the power cord plug when plugging or
unplugging to or from an outlet.
If improperly grounded, this
power tool can cause serious injury from
electrical shock, particularly when used in
damp locations or near plumbing. If an
electrical shock occurs, there is the potential
of a secondary hazard such as your hands
coming in contact involuntarily with the
rotating grinder.
Electrical Connections
The model 10-20 Plus Drum Sander is rated at
115V, 1Ph. This sander is designed for use on a
circuit with an outlet that looks the one shown in
Fig. A, and has a grounding prong, also shown
in Fig. A. A temporary adapter (Fig. B) may be
used to connect the plug to a two-prong
receptacle (Fig. B) if a properly grounded outlet
is not available. A temporary adapter should
only be used until a properly grounded outlet
can be installed by a qualified electrician. This
adapter is not applicable in Canada. The
green colored lug must be fastened to the cover
plate screw.
Important: The adapter illustrated in Fig. B is for
use only if you already have a properly
grounded two-prong receptacle. If you are not
sure that your outlet is properly grounded, have
it checked by a qualified electrician.
Before plugging into the
power source, be sure that power switch is
in the OFF position.
Extension Cords
Use only three-wire extension cords that have
three-prong grounding type plugs and three-
prong receptacles that accept the tool's plug.
Replace or repair damaged or worn core
immediately.
Use only UL Listed extension cords with this
product.
Improper use of extension cords may cause
inefficient operation of the sander that can result
in overheating. Be sure the extension cord is
rated to allow sufficient current flow to the motor.
For the proper gauge for the sander in use, see
the chart in Table 1.
Amp
Rating
Volts Total length of cord in fee
t
120V
240V 25 50 50 100 100 200 200 300
A
WG
0
–
05
6 – 10
10 – 12
12 – 16
18
18
15
14
16
16
16
12
16
14
14
not
recom
14
12
12
not
recom
Table 1

10
Controls
On/Off Switch
Before powering up the unit,
make sure all of the tools used to assemble and
adjust the unit are removed and accounted for.
Make sure your hands, loose clothing and any
other items that may get caught are safely away
from the unit.
The On/Off Switch (A, Fig. 4) is located on the front
of the sander. To turn the sander on, pull the switch
to the on position. To turn the sander off, push the
switch to the off position.
Switch Lock
The sander can be locked from unauthorized use
by locking the switch. To lock the switch:
1. Turn the switch to the off position and
disconnect the sander from the power source.
2. Pull the key (C, Fig. 4) out. The switch cannot
be turned on with the key removed.
Should the key be removed
from the switch in the on position, the switch
can be turned off but cannot be turned back on.
3. To replace the key, slide the key into the slot
on the switch until it snaps.
Circuit Breaker
The sander is equipped with a motor protective
device (circuit breaker). The breaker will
automatically shut the sander off when excessive
current is consumed.
If the breaker is tripped, turn the sander off and
reset the circuit breaker by pressing the button
(B, Fig. 4).
Be sure to turn the sander off
before resetting the circuit breaker to avoid
unintentionally starting the sander
Figure 4