Harbor Freight Tools Thermostat 90590 User Manual

®
AIR REGULATOR - 1/4”  
MODEL 90590  
ASSEMBLY AND OPERATING INSTRUCTIONS  
®
3491 Mission Oaks Blvd., Camarillo, CA 93011  
Copyright 2003 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, please call 1-800-444-3353.  
 
5.  
Do not use this product if under the influence of alcohol or drugs. Read  
warning labels on prescriptions to determine if your judgement or reflexes  
are impaired while taking drugs. If there is any doubt, do not attempt to use this  
product.  
6.  
7.  
8.  
Use eye protection. Wear ANSI approved safety impact eye goggles when  
using this product. ANSI approved safety impact eye goggles are available from  
Harbor Freight Tools.  
Dress safely. Do not wear loose clothing or jewelry, as they can become caught  
in moving parts. Wear a protective hair covering to prevent long hair from be-  
coming caught in moving parts.  
Do not overreach. Keep proper footing and balance at all times to prevent  
tripping, falling, back injury, etc.  
9.  
Industrial applications must follow OSHA requirements.  
10.  
Stay alert. Watch what you are doing at all times. Use common sense. Do not  
use this product when you are tired or distracted from the job at hand.  
11.  
Check for damaged parts. Before using this product, carefully check that it will  
operate properly and perform its intended function. Check for damaged parts  
and any other conditions that may affect the operation of this product. Replace  
or repair damaged or worn parts immediately.  
12.  
13.  
14.  
Replacement parts and accessories: When servicing, use only identical re-  
placement parts. Only use accessories intended for use with this product. Ap-  
proved accessories are available from Harbor Freight Tools.  
Maintain this product with care. Keep this product clean and dry for better and  
safer performance. For your safety, service and maintenance should be per-  
formed regularly by a qualified technician.  
Use the right tool for the job. Do not attempt to force a small tool to do the  
work of a larger industrial tool. There are certain applications for which this tool  
was designed. It will do the job better and more safely at the capacity for which it  
was intended. Do not modify this tool, and do not use this tool for a purpose for  
which it was not intended.  
15.  
Maintain a safe working environment. Keep the work area well lit. Make sure  
there is adequate surrounding work space. Always keep the area free of obstruc-  
tions, grease, oil, trash, and other debris. Use this product only in a well venti-  
lated area.  
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16.  
17.  
Before each use, always check all connections and joints to make sure no  
air leaks are present. Also check air hoses for cracks or excessive wear.  
Always replace a damaged hose.  
Maintain labels and nameplates on this product. These carry important  
information. If unreadable or missing, contact Harbor Freight Tools for a replace-  
ment.  
18.  
19.  
Always disconnect the Air Regulator from its air supply source before  
performing any maintenance on the Air Regulator.  
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.)  
20.  
21.  
Always read and adhere to all safety warnings and instructions provided in  
the instruction manual of the spray paint equipment being used.  
WARNING! The warnings, precautions, and instructions discussed in this  
manual cannot cover all possible conditions and situations that may occur. The  
operator must understand 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 the parts shown on the Parts List (page 7) are  
included. 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.  
PRODUCT DESCRIPTION  
1.  
The Air Regulator is designed for use on paint spray guns. The Regulator’s stop  
feature prevents surges while spraying to keep an even coat and improve the  
paint finish.  
ASSEMBLY INSTRUCTIONS  
NOTE: For additional references to the parts listed on the following pages, refer to the  
Assembly Diagram (page 7).  
1.  
Proper use of the Air Regulator requires that it be directly attached to the air  
intake of the spray gun. To do so, wrap about 3” of pipe thread seal tape (not  
included) around the male threads of the Spray Gun. Then, wrench  
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tighten the Air Diaphragm Regulator into the air intake of the spray gun.  
(See Figure A.)  
SPRAY PAINT GUN  
NOT INCLUDED.  
ADAPTER (#13)  
ADJUSTING KNOB (#1)  
PRESSURE GAUGE (#14)  
CONNECT AIR SUPPLY HOSE  
FIGURE A  
TO COUPLER  
(not included)  
OPERATING INSTRUCTIONS  
1.  
2.  
NOTE: Before starting, make sure to refer to both the spray gun and paint  
manufacturers’ instruction manuals to determine the proper level of air pressure  
required for each specific painting job that is to be performed.  
To use the Air Regulator, turn its Adjusting Knob counterclockwise all the way.  
(See Figure A.) Apply several wraps of sealant tape to the threads of #13  
Adapter. Then install a 1/4” NPT or 1/4” NPS coupler plug (not included) on the  
Adapter, and wrench tighten.  
3.  
4.  
Connect the air supply hose to the Coupler (not included) of the Air Regulator.  
Then, turn on the air compressor. (See Figure A.)  
IMPORTANT: The air pressure of the Air Regulator may be adjusted from 0 to  
160 PSI. To increase the level of PSI, turn the Adjusting Knob (part #1)  
clockwise. To decrease the level of PSI, turn the Adjusting Knob  
counterclockwise. (See Figure A.)  
5.  
6.  
Turn the Adjusting Knob (part #1) clockwise to raise the air pressure to the de-  
sired level as indicated on the Pressure Gauge (part #14). (See Figure A.)  
Make sure to spray waste material for several seconds prior to starting the actual  
job. This allows you to properly adjust the spray gun and, if necessary, re-adjust  
the level of air pressure using the Adjusting Knob (part #1).  
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7.  
When finished painting, turn off the air compressor. Squeeze the trigger of the  
spray gun for several seconds to release all compressed air from the system.  
Then, disconnect the air supply hose from the Air Regulator.  
(See Figure A.)  
INSPECTION, MAINTENANCE, AND CLEANING  
1.  
2.  
Before each use, inspect the general condition of the Air Regulator. loose  
connections and joints, cracked, or broken parts, excessively worn air supply  
hose, and any other condition that may affect the safe and proper operation of the  
Regulator. If a problem occurs, have the problem corrected before further use.  
Do not use damaged equipment.  
When cleaning, use only water and a mild detergent. Do not immersed in liquid.  
Do not use cleaners that are combustible or corrosive.  
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 MANUFACTUER 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 REPAIRSTOTHE ORIGINAL PROD-  
UCT OR REPLACEMENT PARTS THERETO, OR ARISING OUT OF HIS OR HER INSTALLATION OF  
REPLACEMENT PARTS THERETO.  
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PARTS LIST AND ASSEMBLY DIAGRAM  
1
QTY  
PART #  
DESCRIPTION  
1
Adjusting Knob  
Regulation Spring  
Spring Washer  
Umbrella Baffle  
O-Ring  
1
1
1
1
1
1
1
1
1
1
1
1
2
2
3
4
3
4
5
6
Holder  
7
O-Ring  
8
Baffle  
5
9
Spring Washer  
Body  
10  
11  
12  
13  
14  
6
7
Nipple  
Nut (1/4” N.P.S. Female)  
Adapter (1/8”-14M) x 1/4” N.P.S. 1  
Pressure Gauge  
8
9
1
10  
11  
12  
14  
13  
NOTE: Some parts are listed and shown for illustration purposes only, and are not  
available individually as replacement parts.  
REV 07k  
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