Wen 6369 User manual

Model # 6369
DRYWALL SANDER
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Your new tool has been engineered and manufactured to WEN’s highest standards for dependability,
ease of operation, and operator safety. When properly cared for, this product will supply you years
of rugged, trouble-free performance. Pay close attention to the rules for safe operation, warnings,
and cautions. If you use your tool properly and for intended purpose, you will enjoy years of safe,
reliable service.
IMPORTANT:
NEED HELP? CONTACT US!
Have product questions? Need technical support?
Please feel free to contact us at:
800-232-1195
[email protected]
WENPRODUCTS.COM
(M-F 8AM-5PM CST)

TABLE OF CONTENTS
Technical Data 2
3
4
5
6
6
7
7
8
9
11
General Safety Rules
Specific Safety Rules For Drywall Sanders
Electrical Information
Know Your Drywall Sander
Assembly
Operation
Maintenance
Exploded View and Parts List
Warranty
TECHNICAL DATA
Model Number:
Motor:
Speed:
Hook & Loop Base Diameter:
Shortened Length:
Length with Extension:
Sanding Pad Diameter:
Sanding Pad Grits:
Dust Port Sizes:
Net Weight:
6369
120 V, 60 Hz, 5A
600 to 1500 RPM (no load)
8.5 inches
43.3 inches
51.2 to 63 inches
9 inches
60, 80, 120, 150, 180, 240
1.25 inches
11.5 pounds
2
Troubleshooting

Safety is a combination of common sense, staying alert and knowing how your item works. SAVE THESE SAFE-
TY INSTRUCTIONS.
1. READ and become familiar with this entire instruction manual. LEARN the tool’s applications, limitations, and
possible hazards.
2. AVOID DANGEROUS CONDITIONS. Do not use power tools in wet or damp areas or expose them to rain.
Keep work areas well lit.
3. DO NOT use power tools in the presence of flammable liquids or gases.
4. ALWAYS keep your work area clean, uncluttered, and well lit. DO NOT work on floor surfaces that are slippery
with sawdust or wax.
5. KEEP BYSTANDERS AT A SAFE DISTANCE from the work area, especially when the tool is operating.
NEVER allow children or pets near the tool.
6. DO NOT FORCE THE TOOL to do a job for which it was not designed.
7. DRESS FOR SAFETY. Do not wear loose clothing, gloves, neckties, or jewelry (rings, watches, etc.) when op-
erating the tool. Inappropriate clothing and items can get caught in moving parts and draw you in. ALWAYS wear
non-slip footwear and tie back long hair.
8. WEAR A FACE MASK OR DUST MASK to fight the dust produced by sanding operations.
9. ALWAYS remove the power cord plug from the electrical outlet when making adjustments, changing parts,
cleaning, or working on the tool.
10. KEEP GUARDS IN PLACE AND IN WORKING ORDER.
11. AVOID ACCIDENTAL START-UPS. Make sure the power switch is in the OFF position before plugging in
the power cord.
12. REMOVE ADJUSTMENT TOOLS. Always make sure all adjustment tools are removed from the saw before
turning it on.
13. NEVER LEAVE A RUNNING TOOL UNATTENDED. Turn the power switch to OFF. Do not leave the
tool until it has come to a complete stop.
14. NEVER STAND ON A TOOL. Serious injury could result if the tool tips or is accidentally hit. DO NOT store
anything above or near the tool.
3
GENERAL SAFETY RULES
WARNING: To avoid mistakes and serious injury, do not plug
in your tool until the following steps have been read and understood.
WARNING: Dust generated from certain materials can be hazardous to
your health. Always operate the tool in a well-ventilated area and provide
for proper dust removal. Use dust collection systems whenever possible.

4
15. DO NOT OVERREACH. Keep proper footing and balance at all times. Wear oil-resistant rubber-soled foot-
wear. Keep the floor clear of oil, scrap, and other debris.
16. MAINTAIN TOOLS PROPERLY. ALWAYS keep tools clean and in good working order. Follow instruc-
tions for lubricating and changing accessories.
17. CHECK FOR DAMAGED PARTS. Check for alignment of moving parts, jamming, breakage, improper
mounting, or any other conditions that may affect the tool’s operation. Any part that is damaged should be properly
repaired or replaced before use.
18. CHILDPROOF THE WORKSHOP. Use padlocks and master switches and ALWAYS remove starter keys.
19. DO NOT operate the tool if you are under the influence of drugs, alcohol, or medication that may affect your
ability to properly use the tool.
20. USE SAFETY GOGGLES AT ALL TIMES that comply with ANSI Z87.1. Normal safety glasses only have
impact resistant lenses and are not designed for safety. Wear a face or dust mask when working in a dusty environ-
ment. Use ear protection such as plugs or muffs during extended periods of operation.
GENERAL SAFETY RULES
WARNING: Do not operate this tool until it is completely
assembled and installed according to the instructions.
1. This equipment should never be used in surroundings in an explosive or flammable atmosphere.
2. Do not let the cable touch any parts of your body.
3. Do not force the machine to do a job that is not intended such as rough grinding, brushing, etc.
4. Only use identical replacement parts when servicing the drywall sander.
5. Accessories need to be rated at a minimum of 1500 RPM. Do not use accessories rated at speeds below the ma-
chine’s maximum RPM.
6. Never use damaged accessories. Always check whether accessories are nicked or cracked prior to operation; in
particular, the grinding pad support plate. Run the machine at maximum speed for one minute in order to test ac-
cessories before using them to sand anything. Make sure bystanders stand clear during this testing phase.
7. Do not put down the machine until the pad’s rotation has completely stopped.
8. Regularly clean your machine’s exhaust/dust port.
9. Do not use sanding disks larger than the recommended size (9 inches).
10. Only use one extension tube at a time.
11. Always allow for reaction torque.
SPECIFIC RULES FOR THE DRYWALL SANDER

GROUNDING INSTRUCTIONS
IN THE EVENT OF A MALFUNCTION OR BREAKDOWN, grounding provides the path of least resistance
for an electric current and reduces the risk of electric shock. This tool is equipped with an electric cord that has an
equipment grounding conductor and a grounding plug. The plug MUST be plugged into a matching outlet that is
properly installed and grounded in accordance with ALL local codes and ordinances.
DO NOT MODIFY THE PLUG PROVIDED. If it will not fit the outlet, have the proper outlet installed by a
licensed electrician.
IMPROPER CONNECTION of the equipment grounding conductor can result in electric shock. The conduc-
tor with the green insulation (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.
CHECK with a licensed electrician if you do not completely understand the grounding instructions or whether the
tool is properly grounded.
USE ONLY THREE-WIRE EXTENSION CORDS that have three-pronged
plugs and outlets that accept the tool’s plug as shown in Fig. A. Repair or re-
place a damaged or worn cord immediately.
CAUTION: In all cases, make certain the outlet in question is properly ground-
ed. If you are not sure, have a licensed electrician check the outlet.
Make sure your extension cord is in good condition. When using an extension cord, be sure to use one heavy
enough to carry the current your product will draw. An undersized cord will cause a drop in line voltage resulting
in loss of power and overheating. The table below shows the correct size to be used according to cord length and
nameplate ampere rating. When in doubt, use a heavier cord. The smaller the gauge number, the heavier the cord.
Make sure your extension cord is properly wired and in good condition. Always replace a damaged extension cord
or have it repaired by a qualified person before using it. Protect your extension cords from sharp objects, excessive
heat and damp/wet areas.
Use a separate electrical circuit for your tools. This circuit must not be less than a #12 wire and should be protected
with a 15 A time-delayed fuse. Before connecting the motor to the power line, make sure the switch is in the OFF
position and the electric current is rated the same as the current stamped on the motor nameplate. Running at a
lower voltage will damage the motor.
WARNING: This tool must be grounded while in use to protect the operator from electric shock.
5
ELECTRICAL INFORMATION
AMPERAGE REQUIRED GAUGE FOR EXTENSION CORDS
25 ft. 50 ft. 100 ft. 150 ft.
5 A 18 gauge 16 gauge 16 gauge 14 gauge
FIGURE A
WARNING: This tool is for indoor use only.
Do not expose to rain or use in damp locations.

6
KNOW YOUR DRYWALL SANDER
Variable Speed
Adjustment
Wheel
Power Switch
Hose Connection
Port
Motor
Hook & Loop
Base Pad
Locking
Clasp
PROBLEM CAUSE SOLUTION
Motor is not
working.
1) Wires in the main plug or in the
socket are loose.
2) The switch is faulty.
1) Have the socket and plug checked by an autho-
rized technician.
2) Have the switch replaced by an authorized tech-
nician.
Unusual noises
occur during
operation. Mo-
tor is not work-
ing properly.
1) Switch contact has failed.
2) Components have jammed.
3) Too high of load has been applied.
1) Have the switch replaced by an authorized tech-
nician.
2) Have the tool checked and repaired.
3) Use less pressure during sanding operations.
Motor gets hot. 1) Foreign substances have gotten inside
the motor.
2) Too high of load has been applied.
1) Have the foreign substances removed.
2) Use less pressure during sanding operations.
Frequent sparks
occur on the
commutator.
1) There is a short circuit in the motor
(armature).
2) Carbon brushes are worn out or
jammed.
1) Have the armature replaced.
2) Have the carbon brushes checked.
TROUBLESHOOTING
Extension
Locking Nut

7
ASSEMBLY
WARNING: To avoid injury from accidental startups, turn switch OFF and remove the plug from
the power source outlet before making any adjustments.
1. Unfold the front and back of the drywall sander. Push the clasp into the closed position to keep the drywall
sander assembly from unfolding (Fig. A).
2. Attach the sanding disk of your choice to the face of the hook and loop base pad. Ensure the holes on the
sanding disks align with the holes on the bottom of the pad (Fig. B).
3. Attach the optional handle extension by inserting the pole into the main drywall sander. Tighten the nut to lock
the handle extension in place.
4. If you would like to use a dust collection device, screw the hose connection port into the end of the additional
handle extension. If you choose not to use the handle extension, attach the hose connection port directly into the
end of the main drywall sander assembly.
5. Connect one end of the dust hose to the end of the hose connection port and another to the dust extraction
device of your choice.
Fig. A Fig. B
OPERATION
1. Hold the machine with both hands.
2. Do not hold the machine by the machine’s head.
3. Before operation, make sure every fastener and nut has been properly engaged and that the sanding pad has
been properly installed and aligned.
4. Before switching on the machine, keep the sanding head slightly away from the work surface.
5. Do not press down too hard in order to avoid overloading the sander. Use proper pressure for better sanding
effects. If the machine slows or bogs down, immediately lessen the applied pressure. The quality of the results are
mainly determined by choosing the right abrasive material for the job.
6. Once the sanding task has been completed, turn off the machine. Wait for the pad to stop rotating before set-
ting down the machine.
Fig. C

REPLACE THE SANDING PAD
Insert the hex wrench into the hexagonal screw (Fig. E - 1)
located in the center of the hook and loop sanding pad. Hold
the pad firmly while turning the wrench to unscrew the center
hex screw. Replace the pad with an identical part suited for this
particular model of drywall sander. Attach firmly in place using
the hexagonal screw.
MAINTENANCE
VARIABLE SPEED CONTROL
Use the speed wheel (Fig. D - 1) to adjust anywhere
from 600 to 1500 RPM. This drywall sander is
equipped with constant speed control to keep the
pad running at a consistent rate despite changes in
applied load.
TURNING ON THE DRYWALL SANDER
After setting the variable speed to your desired RPM,
power the machine by pressing forward on the power
switch (Fig. D - 2).
88
OPERATION
Fig. D
1
2
1
Fig. E
CLEANING AND MAINTAINING YOUR DRYWALL SANDER
Your drywall sander requires no additional lubrication or maintenance. Always store your sander in a dry place
away from children. If the supply cord is damaged, it must be replaced by the manufacturer or a similarly qualified
technician. Do not use a damaged tool.
If excessive sparking occurs, have the carbon brushes checked by a qualified electrician. Only a qualified techni-
cian should change the carbon brushes.
Clean the unit immediately after using it. Regularly clean the unit with a damp cloth and a little soft soap. Do not
use cleaners or solvents as they will attack the plastic of the unit. Make sure water does not get into the unit.