industrial air filter regulator

Model 98904

set up and operating instructions

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 © 2008 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. Diagrams within this manual may not be drawn proportionally. Due to continuing improvements, actual product may differ slightly from the product described herein. Tools required for assembly and service may not be included.

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

Revised Manual 10c

Specifications

Operating Pressure

Air Inlet and Outlet Size

Features

Filter

0 -160 PSI

Inlet: 1/2” -14 NPT (female thread)

Outlet: 1/4”-18 NPT (male thread)

Replaceable air filter element

40 micron

save this Manual

You will need the manual for the safety warnings and precautions, assembly instructions, operating and maintenance procedures, parts list and diagram. Keep your invoice with this manual. Write the invoice number on the inside of the front cover. Keep the manual and invoice in a safe and dry place for future reference.

safety Warnings and precautions

Warning: When using tools, basic safety precautions should always be followed to reduce the risk of personal injury and damage to equipment.

read all instructions before using this tool!

1. Keep work area clean . Cluttered areas invite injuries.

2. observe work area conditions . Do not use in damp or wet locations. Don’t expose to rain. Keep work area well lighted. Do not use in the presence of flammable gases or liquids.

3.

4.

Keep children away . Children must never be allowed in the work area. Do not let them handle this product or other machines, tools, or extension cords.

store idle equipment . When not in use, this product must be stored in a dry location to inhibit rust. Always lock up and keep out of reach of children.

5.

6.

7.

8. use the right tool for the job . Do not attempt to force a small tool or attachment to the work of a larger industrial tool. There are certain applications for which this product was designed. It will do the job better and more safely at the rate for which it was intended. Do not modify this product and do not use this product for a purpose for which it was not intended. do not overreach . Keep proper footing and balance at all times. Do not reach over or across running machines.

dress properly . Do not wear loose clothing or jewelry as they can be caught in moving parts. Protective, electrically nonconductive clothes and nonskid footwear are recommended when working. Wear restrictive hair covering to contain long hair.

use eye and ear protection . Always wear ANSI-approved impact safety goggles when using and servicing this product and/or air tools. Wear a full face shield if you are producing metal filings or wood chips. Wear a NIOSH-approved dust mask or respirator when working around metal, wood, and chemical dusts and mists.

9. Maintain tools with care . Keep clean for better and safer performance. Follow instructions for lubricating and changing accessories. Inspect periodically and, if damaged, have them repaired by an authorized technician. The Filter/Regulator must be kept clean, dry, and free from oil and grease at all times.

10. disconnect power . Unplug air compressor (not included) when not in use.

11.

12. do not exceed maximum air pressure of 160 psi .

avoid unintentional starting . Do not carry any air tool with your finger on the trigger, whether it is plugged in or not.

SKU 98904 for technical questions, please call 1-800-444-3353 Page 2

13. stay alert . Watch what you are doing, use common sense. Do not operate any tool when you are tired.

14. check for damaged parts . Before using Filter/Regulator, any part that appears damaged should be carefully checked to determine that it will operate properly and perform its intended function. Check for alignment and binding of moving parts; any broken parts or mounting fixtures; and any other condition that may affect proper operation. Any part that is damaged should be properly repaired or replaced by a qualified technician. Do not use any air tool if its switch does not turn On and Off properly.

15. replacement parts and accessories . When servicing, use only identical replacement parts. Use of any other parts will void the warranty.

16. Do not operate air tools if under the influence of alcohol or drugs . Read warning labels if taking prescription medicine to determine if your judgment or reflexes are impaired while taking drugs. If there is any doubt, do not operate the product.

17. Maintenance . For your safety, service and maintenance should be performed regularly by a qualified technician.

18. Before using any air tool, read and adhere to all instructions and safety warnings provided in the

instruction manual of the air compressor being used. Be sure to use compressed air only.

Warning: the brass components of this product contain lead, a chemical known to the state of california to cause birth defects (or other reproductive harm). (california health & safety code 25249.5 et seq.)

Warning: the warnings, cautions, 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.

unpacking

When unpacking, check to make sure all parts are included. Refer to the photo below, and the Parts List and

Diagram located at the end of this manual. If any parts are missing or broken, please call Harbor Freight Tools at the number on the cover of this manual.

assembly

2A

1B

Figure 1

1. Remove the contents in the small plastic bag and locate Nipple (1B). Thread the Nipple (1B) into the side port of the Filter Cap (2A). You should use pipe thread seal tape or pipe dope (not included) on all threaded connections. See Figure 1.

SKU 98904 for technical questions, please call 1-800-444-3353 Page 3

1B

assembly continued

2B figure 2

3B

2B figure 3

5B

2.

3.

Next thread the Air Regulator (3B) onto the Nipple (1B). See Figure 2.

Thread in the Air Valve (5B) into the Air Regulator (3B). See Figure 3

1B

2B figure 4

3B 1c figure 5

Figure 5

4. Thread the Regulator Handle (1C) into the Air Regulator (3B) until tight. See Figure 4.

5. When assembly is complete, it should look like the photo in Figure 5.

SKU 98904 for technical questions, please call 1-800-444-3353 Page 4

air connections

caution: To avoid injury, make certain that the air compressor is unplugged from the power source and that all pressure is released from its tank before connecting the Air Filter/Regulator to it.

Air Hose

Air Inlet

Male Quick Coupler

(not supplied)

Male Quick Coupler

(not supplied) air coMpressor

Regulator Handle (1C)

Pressure Gauge (6B)

(5B)

Air Hose

Female Quick Coupler

(not supplied)

Female Quick Coupler

(not supplied)

Air Valve (5B) Figure 6

1. Connect an air hose (not included) or pipe (not included) beween your air compressor (not included) and the 1/2” air inlet located on top of the Filter Cap (2A). See Figure 6.

2. Connect another air hose (not included) between the Air Valve (5B) and your air tool or paint gun. See

Figure 6.

note: It is recommended that you use male and female quick connectors as shown in Figure 6 above. This will allow you to quickly change air tools and hoses if requied.

operation

1.

2.

3.

Turn on the air compressor and check for leaks. If any are found, turn the Compressor off, drain air from tank, and fix the leak. Warning: Do not exceed 160 PSI during use.

With the compressor ON, turn the Regulator Handle(1C) to set the pressure that you want. Look at the

Pressure Gauge (6B) while you turn the Adjusting Screw. Stop turning the Regulator Handle (1C) when the Pressure Gauge needle points to the desired pressure. See Figure 6.

You must drain the Air Filter/Regulator of water daily. With the unit under pressure, turn the Drain Plug

(14A) to expel any accumulated moisture from the Air Filter. See page 6 parts list A.

Maintenance

caution: To avoid injury, make certain that the Air Filter/Regulator is depressurized before performing any maintenance on it.

1.

2.

3.

4.

5.

Periodically remove the Filter (6A), rinse it out with water and replace. If it is damaged or if it needs to be replaced you can order a new one by calling 1-800-444-3353

To disassemble the air filter; remove the Nipple (1B) from the Housing (7A) by twisting it in a counterclockwise rotation.

note: You will need to firmly hold the Cap Nut (13A), with a wrench, while you turn the Nipple (1B) because they are both connected to the same Stud (10A). See the parts list and assembly diagram page

6.

Once the Nipple (1B0 is removed the filter will be accessible.

Make sure to tighten the Nipple (1B) before pressurizing the unit.

SKU 98904 for technical questions, please call 1-800-444-3353 Page 5

2 2B

4B

6B

1B

5B

parts list and assembly diagram

7

4B

5B

6B

1B

2B

3B part #

Nipple description

Elbow

Air Regulator

Plug

Air Valve

Gauge

3B

1A

Air inlet port

8A

9A

10A

11A

12A

13A

14A

2A

3A

4A

5A

6A

7A

7A

8A

9A

10A

11A

12A

13A

14A

4A

5A

6A

1A

2A

3A part # description

Plug

Filter Cap

Gasket

Plug

Air Valve

Filter

Housing

Filter Washer

Retaining Ring

Stud

Gasket

Filter Base

Cap Nut

Drain Plug

note: Some parts are listed and shown for illustration purposes only and are not available individually as replacement parts.

REV 10c

SKU 98904 for technical questions, please call 1-800-444-3353 Page 6

parts list and assembly diagram continued

1C

2C

3C

4C

5C

6C

7C

8C

9C

10C

11C

12C

13C

6C

7C

8C

9C

10C

11C

12C

13C

1C

2C

3C

4C

5C part # description

Regulator Handle

Housing Cap

Spring Button

Spring

Spring Seat

O-Ring

Steel Plate

Brass Nut

O-Ring

Pin

Spring

Body

Filters

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 DIAGRAM IN THIS

MANUAL AS A REFERENCE TOOL ONLY. NEITHER THE MANUFACTURER NOR 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 REPLACE-

MENT PARTS THERETO.

SKU 98904 for technical questions, please call 1-800-444-3353 Page 7

liMited 90 daY 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 90 days 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, criminal activity, improper installation, 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

SKU 98904 for technical questions, please call 1-800-444-3353 Page 8