Central Pneumatic Sander 97053 Users Manual

2015-02-03

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PALM ORBITAL WET SANDER
5 INCH
Model 97053

Set up And Operating Instructions

Diagrams within this manual may not be drawn proportionally.
Due to continuing improvements, actual product may differ slightly from the product described herein.
Distributed exclusively by Harbor Freight Tools®.

3491 Mission Oaks Blvd., Camarillo, CA 93011
Visit our website at: http://www.harborfreight.com

Read this material before using this product.
Failure to do so can result in serious injury.
Save this manual.
Copyright© 2007 by Harbor Freight Tools®. All rights reserved. No portion of this
manual or any artwork contained herein may be reproduced in any shape or form
without the express written consent of Harbor Freight Tools.

For technical questions or replacement parts, please call 1-800-444-3353.

Save This Manual
Keep this manual for the safety warnings and precautions, assembly, operating,
inspection, maintenance and cleaning procedures. Write the product’s serial number
in the back of the manual near the assembly diagram (or month and year of purchase if
product has no number). Keep this manual and the receipt in a safe and dry place for
future reference.

Important SAFETY Information
In this manual, on the labeling, and all other information
provided with this product:
This is the safety alert symbol. It is used to alert you to potential
personal injury hazards. Obey all safety messages that follow this
symbol to avoid possible injury or death.

Danger

DANGER indicates a hazardous situation
which, if not avoided, will result in death or
serious injury.

WARNING

WARNING indicates a hazardous situation
which, if not avoided, could result in death
or serious injury.

Caution

CAUTION, used with the safety alert
symbol, indicates a hazardous situation
which, if not avoided, could result in minor
or moderate injury.

Notice

NOTICE is used to address practices not
related to personal injury.

Caution

SKU 97053

CAUTION, without the safety alert symbol,
is used to address practices not related to
personal injury.

For technical questions, please call 1-800-444-3353.

Page 2

General Safety Rules
WARNING! Read all instructions
Failure to follow all instructions listed below may result in serious injury.
The term “power tool” in all of the warnings listed below refers to your 5” Palm
Orbital Wet Sander.
SAVE THESE INSTRUCTIONS
1.

Work area safety
a. Keep work area clean and well lit. Cluttered or dark areas invite accidents.
b. Do not operate the Sander in explosive atmospheres, such as in the presence
of flammable liquids, gases or dust. Power tools create sparks which may
ignite the dust or fumes.
c. Keep children and bystanders away while operating a power tool.
Distractions can cause you to lose control.

Personal safety
a. Stay alert, watch what you are doing and use common sense when operating
the Sander. Do not use a power tool while you are tired or under the
influence of drugs, alcohol or medication. A moment of inattention while
operating power tools may result in serious personal injury.
b. Use safety equipment. Always wear eye protection. Safety equipment such
as dust mask, non-skid safety shoes, hard hat, or hearing protection used for
appropriate conditions will reduce personal injuries.
c. Remove any adjusting key or wrench before turning the Sander on. A
wrench or a key left attached to a rotating part of the power tool may result in
personal injury.
d. Do not overreach. Keep proper footing and balance at all times. This
enables better control of the Sander in unexpected situations.
e. Dress properly. Do not wear loose clothing or jewelry. Keep your hair, clothing and gloves away from moving parts. Loose clothes, jewelry or long hair
can be caught in moving parts.

Power tool use and care
a. Do not force the Sander. Use the correct power tool for your application. The
correct power tool will do the job better and safer at the rate for which it was
designed.
b. Do not use the Sander if the Valve Lever (1) does not turn it on and off. Any
power tool that cannot be controlled with the Valve Lever is dangerous and
must be repaired.
c. Disconnect the Sander from its compressed air supply source before
making any adjustments, changing accessories, or storing the Sander.

SKU 97053

For technical questions, please call 1-800-444-3353.

Page 3

Such preventive safety measures reduce the risk of starting the power tool
accidentally.
d. Store idle power tools out of the reach of children, and do not allow people
unfamiliar with the Sander or these instructions to operate the power tool.
Power tools are dangerous in the hands of untrained users.
e. Maintain power tools. Check for misalignment or binding of moving parts,
breakage of parts and any other condition that may affect the Sander’s
operation. If damaged, have the power tool repaired before use. Many
accidents are caused by poorly maintained power tools.
f. Use the Sander and its accessories in accordance with these instructions
and in the manner intended for this particular type of power tool, taking
into account the working conditions and the work to be performed. Use of
the Sander for operations different from those intended could result in a
hazardous situation.
4.

Service
a. Have your Sander serviced by a qualified repair person using only identical
replacement parts. This will ensure that the safety of the power tool is
maintained.

Vibration Hazard
This tool vibrates during use. Repeated or long-term exposure to vibration may
cause temporary or permanent physical injury, particularly to the hands, arms
and shoulders. To reduce the risk of vibration-related injury:
1.

Anyone using vibrating tools regularly or for an extended period should first
be examined by a doctor and then have regular medical check-ups to ensure
medical problems are not being caused or worsened from use. Pregnant women
or people who have impaired blood circulation to the hand, past hand injuries,
nervous system disorders, diabetes, or Raynaud’s Disease should not use this
tool. If you feel any medical or physical symptoms related to vibration (such as
tingling, numbness, and white or blue fingers), seek medical advice as soon as
possible.

Do not smoke during use. Nicotine reduces the blood supply to the hands and
fingers, increasing the risk of vibration-related injury.

Wear suitable gloves to reduce the vibration effects on the user.

Use tools with the lowest vibration when there is a choice between different
processes.

Include vibration-free periods each day of work.

SKU 97053

For technical questions, please call 1-800-444-3353.

Page 4

Grip tool as lightly as possible (while still keeping safe control of it). Let the tool
do the work.

To reduce vibration, maintain the tool as explained in this manual. If any
abnormal vibration occurs, stop use immediately.

Specific Safety Rules
1.

Maintain labels and nameplates on the Sander. These carry important safety
information. If unreadable or missing, contact Harbor Freight Tools for a
replacement.

Stay within the maximum air pressure capacity (90 PSI). Never operate the
Sander above 90 PSI.

Compressed air only. Use clean, dry, regulated, compressed air at 90 PSI.
Never use oxygen, carbon dioxide, combustible gases, or any other bottled gas
as a power source for this tool.

Remove adjusting wrenches. Check that adjusting wrenches are removed from
the Sander and work surface before connecting to a compressed air supply
source.

Avoid unintentional starting. Prepare to begin work before turning on the tool.

CAUTION! To avoid injury, keep hands and fingers away from the rotating Pad
(38). If both hands are holding the Sander, your hands and fingers cannot be cut
by the rotating Pad or Sanding Paper (not included).

Always use 5 inch diameter Sanding Paper with this tool. Sanding Paper that
does not match the Pad (38) diameter of the Sander will run eccentrically,
causing loss of control or may fly off the Sander.

The Pad (38) and Sanding Paper will become hot while sanding. Allow the Pad
and Sanding Paper to completely cool before handling.

Do not lay the tool down until it has come to a complete stop. Moving parts can
grab the surface and pull the tool out of your control.

10.

When using a handheld power tool, maintain a firm grip on the tool with both
hands to resist starting torque.

11.

Do not leave the tool unattended when it is connected to its compressed air
supply. Turn off the tool, and disconnect it from its air supply before leaving.

12.

Disconnect air hose and release any built-up air pressure. Never service the
Sander with the air hose attached. Always release any built-up air pressure in
the tool (even after disconnecting the air hose).

SKU 97053

For technical questions, please call 1-800-444-3353.

Page 5

13.

Use clamps (not included) or other practical ways to secure and support the
workpiece to a stable platform. Holding the work by hand or against your body is
unstable and may lead to loss of control.

14.

This product is not a toy. Keep it out of reach of children.

15.

WARNING! The brass components of this product contain lead, a chemical
known to the State of California to cause birth defects (or other reporductive
harm). (California Health & Safety Code 25249.5, et seq.)

16.

Some dust created by power sanding, sawing, grinding, drilling, and other
construction activities, contains chemicals known (to the State of California) to
cause cancer, birth defects or other reproductive harm. Some examples of these
chemicals are:
Lead from lead-based paints
Crystalline silica from bricks and cement or other masonry products
Arsenic and chromium from chemically treated lumber
Your risk from these exposures 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 those dust masks that
are specially designed to filter out microscopic particles. (California Health &
Safety Code § 25249.5, et seq.)

17.

The warnings, precautions, and instructions discussed in this instruction manual
cannot cover all possible conditions and situations that may occur. It must be
understood by the operator that common sense and caution are factors which
cannot be built into this product, but must be supplied by the operator.

Save these instructions.
Specifications
Maximum
Operating Pressure

90 PSI

Air Consumption

6.5 CFM

Maximum
Orbits Per Minute

8000

Sanding Pad Size

5” Diameter

Sand Paper
Attachment Method

Hook & Loop

Air Inlet Size

1/4”-18 NPT

Water Intake
Tube Size

11.5 Ft. x 1/4” O.D.

Accessories

Sand Paper Discs: 2000 Grit / 1500 Grit / 1200 Grit / 800 Grit / (Qty. 1 Each)

SKU 97053

For technical questions, please call 1-800-444-3353.

Page 6

Unpacking
When unpacking, check to make sure that the item is intact and undamaged. If any
parts are missing or broken, please call Harbor Freight Tools at the number shown on the
cover of this manual as soon as possible.

Set Up Instructions
Read the entire Important Safety Information section at the
beginning of this manual including all text under subheadings therein
before set up or use of this product.

WARNING

Risk of accidental starting; resulting in serious personal
injury. Disconnect the Sander from its compressed air
source before assembling, making pad replacement or
making any adjustments to the tool.

Note: For additional information regarding the parts listed in the following pages, refer
to the Assembly Diagram near the end of this manual.

Assembly
1.

Prior to using the Sander, the Sander must have a female Quick Connector (not
included) connected to the tool’s Regulator Set (29). To do so, wrap about 3” of
Pipe Thread Seal Tape (not included) around the threads of the Regulator Set.
Then firmly screw on the Quick Connector. (See Figure A.)
REGULATOR SET (29)
QUICK CONNECTOR
(NOT INCLUDED)

FIGURE A

For best tool performance, you should incorporate an oiler, regulator, and in-line
water filter as shown in the illustration on the next page.
(See Figure B, next page.)

SKU 97053

For technical questions, please call 1-800-444-3353.

Page 7

REGULATOR

FIGURE B
AIR
COMPRESSOR
TO
SANDER
OILER

FILTER

Attach the 5” diameter Sand Paper Disc to the Sander’s Pad (38) by pressing it
onto the pad. (See Figure C.)
FIGURE C

PAD (38)

5” DIAMETER
SAND PAPER DISC

Place the Sander’s Anchor (43) Assembly in a container filled with cold, clean
water. CAUTION! Use only cold, clean water. Never run the Wet Sander
without a water source. (See Figure D.)

FIGURE D

WATER FLOW CONTROL
ANCHOR
ASSEMBLY
(43)

REV 08a

SKU 97053

For technical questions, please call 1-800-444-3353.

Page 8

Connect a compressed air supply hose (not included) to the previously installed
Quick Connector. Then turn on the air compressor, and set its regulator to 90
PSI. Do not exceed 90 PSI. (See Figure E.)

VALVE LEVER (1)

ALLEN SCREW (46)
&
OIL PORT

REGULATOR SET (29)
QUICK
CONNECTOR
(NOT INCLUDED)

COMPRESSED
AIR SUPPLY HOSE

FIGURE E

(NOT INCLUDED)

Operating Instructions
Read the entire Important Safety Information section at the
beginning of this manual including all text under subheadings therein
before set up or use of this product.
CAUTION! Prior to using the Sander, make sure to wear ANSI-approved
safety impact goggles, dust mask or respirator, and heavy duty work
gloves.

IMPORTANT: On a DAILY basis, make sure to top off the Sander’s Oil Port with
pneumatic tool oil. To do so, disconnect the tool from its compressed air supply
source and release all remaining air pressure from the tool by pressing the Valve
Lever (1). Use the provided Allen Wrench (49) to unscrew and remove the Allen
Screw (46) located at the top of the tool. Then replace the Allen Screw (do not
over-tighten). (See Figure E.)

Use clamps (not included) or other practical ways to secure and support the
workpiece to a stable platform. Holding the work by hand or against your body is
unstable and may lead to loss of control.

Grip the Sander firmly. Then squeeze the Valve Lever (1) and allow the Pad (38)
to move in its orbital motion to its fullest speed. To adjust the speed (orbits per
minute) of the Sander, rotate the Regulator Set (29). (See Figure E.)

SKU 97053

For technical questions, please call 1-800-444-3353.

Page 9

To adjust the water flow rate of the Sander, turn the Water Flow Control located
on the Anchor Assembly (43). (See Figure D.)

Sand the workpiece evenly with gentle, broad, sweeping strokes in a criss-cross
pattern.

During the sanding process, it may become necessary to occasionally stop the
Sander, disconnect the tool from its compressed air supply source, remove any
remaining compressed air from the tool by squeezing its Valve Lever (1), and
replace the worn Sand Paper Disc with a new Disc. (See Figure E.)

Once the sanding is completed, release pressure on the Valve Lever (1) to stop
the Sander. Remove the Anchor Assembly (43) from its container of water.
Restart the Sander to empty the tool of any remaining water. Turn off the air
compressor. Disconnect the Sander from its air supply hose. Then squeeze the
Valve Lever once again to release any remaining compressed air from the tool.
(See Figures D and E.)

Make sure to store the Sander in a clean, dry, safe location out of reach of
children and other unauthorized people.

Maintenance And Servicing

WARNING

Risk of serious personal injury from accidental starting.
Disconnect the Sander from its compressed air supply
before performing any inspection, maintenance, or cleaning
procedures.
Damaged equipment can fail, causing serious personal
injury. Do not use damaged equipment. If abnormal noise or
vibration occurs, have the problem corrected before further
use.

BEFORE EACH USE, inspect the general condition of the Sander. Check for
loose parts, misalignment or binding of moving parts, cracked or broken parts,
damaged hose, and any other condition that may affect its safe operation.

DAILY, top off the Sander’s Oil Port with pneumatic tool oil. To do so, disconnect
the tool from its compressed air supply source and release all remaining air
pressure from the tool by pressing the Valve Lever (1). Use the provided Allen
Wrench (49) to unscrew and remove the Allen Screw (46) located at the top of
the tool. Then replace the Allen Screw.
(See Figure E.)

DAILY, check the Strainer (44) in the Anchor Assembly (43) for excess dirt and
debris. If necessary, clean Strainer. (See Assy. Diagram.)

SKU 97053

For technical questions, please call 1-800-444-3353.

Page 10

After Use, clean external surfaces of the tool with a clean, moist cloth.

CAUTION! All maintenance, service, and repairs not mentioned in this manual
must only be performed by a qualified service technician.

Troubleshooting
Problem
Sander will not start.

Possible Causes
1. No compressed air supply.
2. Insufficient pressure on the Valve
Lever.
3. Air pressure too low.
4. Regulator (or tool) set too low

Sand Paper Disc not
orbiting, or orbiting
slowly.

1. Air pressure too low.
2. Insufficient compressed air supply.
3. Regulator Set adjusted too low.
4. Leaks in Air Hose.

Possible Solutions
1. Connect Sander to a compressed
air supply.
2. Press harder on Valve Lever.
3. Set air compressor regulator to 90
PSI.
4. Adjust regulator setting.
1. Squeeze harder on the Valve Lever.
2. Set air compressor regulator to 90
PSI.
3. Adjust Regulator Set for a higher
orbital speed.
4. Check Air Hose for leaks.

Water flow low or non- 1. Water Flow Control improperly set.
extistent.
2. Clogged Strainer.
3. No water in supply tank.

1. Adjust Water Flow Control for
increased water flow.
2. Remove Strainer and clean.
3. Fill supply tank.

Sander does not
remove residue from
the workpiece, even
after repeated brief
attempts.

1. Use a more course Sand Paper
Disk.
2. Do not continue sanding to avoid
damaging workpiece surface. Use
another method to remove residue.

SKU 97053

1. Sand Paper Disc to fine.
2. Using wrong tool for the job at
hand.

For technical questions, please call 1-800-444-3353.

Page 11

parts list
Part

Description

Qty.

Part

Description

Qty.

Valve Lever

O-Ring (4 x 7)

Spring Pin (3 x 32)

Valve Pin

Screw (M5 x 35)

Valve Spring

Top Cover

Body

Body Packing

Regulator Set

Screw (M5 x 10)

Support

Conical Washer (M5)

Check Valve

Bearing (6000ZZ)

W-Nozzle Body

U-Bearing Case

Nut (M16)

U-Side Plate

Silencer

Rotor

W-Hose Joint

Vane

W-Seal

Cylinder Set

Waterproof Seal

13-1

Spring Pin (3 x 5)

13-2

O-Ring (P7)

Foam Pad

L-Side Plate

Washer (M5)

L-Bearing Case

Screw (M5 x 6)

Shaft with Head

Cap Screw (5 x 15)

H/R Key (3 x 13)

W-Hose (4mm)

Pad Retainer

Anchor Assembly

Shim

Strainer

Retainer Nut

Binder

Snap Ring

Allen Screw (M5 x 10)

Snap Ring (IR12)

Bearing (60002RS)

O-Ring (P8)

Washer (M5)

Valve Pin Sleeve

Allen Wrench

SKU 97053

For technical questions, please call 1-800-444-3353.

1 Set

1
1 Set

1 Set

Page 12

ASSEMBLY DIAGRAM
46

2
22
23

47
19

26
27

20
6

7
8

13-1

32
13-1
13-2

33
30

13
14

37
38

15
8

17
48

16
39

SKU 97053

For technical questions, please call 1-800-444-3353.

Page 13

Limited 1 Year warranty
Harbor Freight Tools Co. makes every effort to assure that its products meet high
quality and durability standards, and warrants to the original purchaser that this product is
free from defects in materials and workmanship for the period of one year from the date
of purchase. This warranty does not apply to damage due directly or indirectly, to misuse,
abuse, negligence or accidents, repairs or alterations outside our facilities, normal wear and
tear, or to lack of maintenance. We 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 product. Some states do not allow the exclusion or limitation of incidental or
consequential damages, so the above limitation of exclusion may not apply to you. This
warranty is expressly in lieu of all other warranties, express or
implied, including the warranties of merchantability and fitness.
To take advantage of this warranty, the product or part must be returned to us with
transportation charges prepaid. Proof of purchase date and an explanation of the complaint
must accompany the merchandise. If our inspection verifies the defect, we will either
repair or replace the product at our election or we may elect to refund the purchase price
if we cannot readily and quickly provide you with a replacement. We will return repaired
products at our expense, but if we determine there is no defect, or that the defect resulted
from causes not within the scope of our warranty, then you must bear the cost of returning
the product.
This warranty gives you specific legal rights and you may also have other rights
which vary from state to state.
3491 Mission Oaks Blvd. • PO Box 6009 • Camarillo, CA 93011 • (800) 444-3353

Record Product’s Serial Number Here:
Note: If product has no serial number, record month and year of purchase instead.
Note: Some parts are listed and shown for illustration purposes only, and are not
available individually as replacement parts.

PLEASE READ THE FOLLOWING CAREFULLY
The manufacturer and/or distributor has provided the parts list and assembly
diagram in this manual as a reference tool only. Neither the manufacturer or
distributor makes any representation or warranty of any kind to the buyer that
he or she is qualified to make any repairs to the product, or that he or she is
qualified to replace any parts of the product. In fact, the manufacturer and/or
distributor expressly states that all repairs and parts replacements should be
undertaken by certified and licensed technicians, and not by the buyer. The buyer
assumes all risk and liability arising out of his or her repairs to the original
product or replacement parts thereto, or arising out of his or her installation
of replacement parts thereto.

SKU 97053

For technical questions, please call 1-800-444-3353.

Page 14

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