Graco Thermostat 206661 User Manual

Instructions–Parts List  
HIGH PRESSURE  
306878W  
ENG  
Fluid Regulators  
For use in airless spray systems to control and regulate fluid pressure to one  
spray gun, dispensing valve, or atomizing head. For professional use only.  
3000 psi (21 MPa, 207 bar) Maximum Working Pressure  
Model 206661, Series G  
1000–3000 psi (7–21 MPa, 70–207 bar)  
Regulated Fluid Pressure Range  
Model 217576, Series D  
200–1000 psi (1.4–7 MPa, 14–70 bar)  
Regulated Fluid Pressure Range  
Important Safety Instructions  
Read all warnings and instructions in this manual.  
Save these instructions.  
Table of Contents  
Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2  
Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2  
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4  
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7  
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8  
Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9  
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11  
Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11  
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12  
Graco Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12  
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WARNING  
INJECTION HAZARD  
Spray from the gun, leaks or ruptured components can inject fluid into your body and cause extremely  
serious injury, including the need for amputation. Fluid splashed in the eyes or on the skin can also  
cause serious injury.  
D Fluid injected into the skin might look like just a cut, but it is a serious injury. Get immediate  
surgical treatment.  
D Do not stop or deflect leaks with your hand, body, glove or rag.  
D Keep your hands away from the end of the drain valve when opening it.  
D Lock the gun trigger safety when you stop spraying.  
D Follow the Pressure Relief Procedure on page 7 if the spray tip clogs and before cleaning,  
checking or servicing the equipment.  
D Follow the Pressure Relief Procedure on page 7 before removing the regulator’s adjusting knob.  
D Do not pressurize the system when the fluid regulator’s adjusting knob is removed.  
D Tighten all fluid connections before operating the equipment.  
D Check the hoses, tubes, and couplings daily. Replace worn or damaged parts immediately.  
Do not repair high pressure couplings; you must replace the entire hose.  
D Use only Graco approved hoses. Do not remove the spring guard that is used to help protect the  
hose from rupture caused by kinks or bends near the couplings.  
TOXIC FLUID HAZARD  
Hazardous fluid or toxic fumes can cause serious injury or death if splashed in the eyes or on the skin,  
inhaled, or swallowed.  
D Know the specific hazards of the fluid you are using.  
D Store hazardous fluid in an approved container. Dispose of hazardous fluid according to all local,  
state and national guidelines.  
D Always wear protective eyewear, gloves, clothing and respirator as recommended by the fluid and  
solvent manufacturer.  
306878 3  
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Installation  
Fluid pressure regulators are used for accurate, posi-  
tive control of the fluid pressure to spray guns, dis-  
Installing the Fluid Regulator  
1. Remove the temporary plumbing and install one  
regulator for each spray gun. A mounting stud,  
washers, and locknut are provided for mounting  
the regulator either from the bottom or side.  
pensing valves or atomizing heads.  
Regulators installed at circulating line take-offs or  
pumps are used to reduce main line pressure and  
maintain the desired fluid pressure to the spray gun,  
dispensing valve, or atomizing head.  
2. Put sealer on threaded connections, except on  
swivel unions as it interferes with the swivel action.  
Before Installing the Fluid Regulator  
3. Connect the fluid supply line to the 3/8 npt(f) inlet  
of the fluid regulator. Connect the fluid line be-  
tween the gun and the regulator’s 1/4 npt(f) outlet  
of choice. MAKE SURE that the direction of fluid  
flow agrees with the IN and OUT markings on the  
regulator body.  
1. Determine placement of the fluid regulator in  
system.  
2. Install a ball valve for inlet and outlet of the regula-  
tor.  
3. Install temporary plumbing between the ball  
valves.  
4. Flush and test the entire system.  
4. Thoroughly flush the system to remove metal  
chips and other contaminants and to check for  
leaks.  
4 306878  
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Installation  
AIR REGULATOR  
Single Direct Spray Station  
FLUID REGULATOR  
GAUGE  
PUMP  
SPRAY GUN  
FLUID DRAIN VALVE  
SUPPLY  
CONTAINER  
Fig 1  
Multiple Circulating Spray Station  
FLUID RETURN LINE  
BACK  
PRESSURE  
VALVE  
PUMP  
AIR REGULATOR  
FLUID REGULATOR  
SPRAY GUN  
FLUID DRAIN VALVE  
SUPPLY  
CONTAINER  
Fig 2  
306878 5  
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Notes  
6 306878  
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Operation  
6. Open the drain valve (required in your system),  
Pressure Relief Procedure  
having a container ready to catch the drainage.  
WARNING  
INJECTION HAZARD  
7. Leave the drain valve open until you are ready to  
spray again.  
The system pressure must be manually  
relieved to prevent the system from  
starting or spraying accidentally. Fluid  
If you suspect that the spray tip or hose is completely  
clogged, or that pressure has not been fully relieved  
after following the steps above, very slowly loosen the  
tip guard retaining nut or hose end coupling and relieve  
pressure gradually, then loosen completely. Now clear  
the tip or hose.  
under high pressure can be injected through the  
skin and cause serious injury. To reduce the risk of  
an injury from injection, splashing fluid, or moving  
parts, follow the Pressure Relief Procedure  
whenever you:  
Adjusting the Regulator  
D are instructed to relieve the pressure,  
The fluid pressure regulator controls pressure down-  
stream from its outlet.  
D stop spraying,  
To adjust the fluid regulator, first, back the knob out  
until there is no spring pressure. Then, turn the knob  
clockwise to increase pressure.  
D check or service any of the system equipment,  
D or install or clean the spray tip.  
NOTE: If you are using an accessory fluid pressure  
gauge, relieve the spray gun line when reducing pres-  
sure to ensure a correct gauge reading.  
1. Lock the gun trigger safety.  
2. Close the bleed-type master air valve (required in  
your system).  
Adjust the pump air pressure and the fluid regulator for  
the best spraying combination. In a circulating system,  
also adjust the back pressure valve.  
3. Unlock the gun trigger safety.  
Record all the settings for future reference. The valve  
cylinder (7) has exterior markings (set points 1 to 8) for  
repeat settings.  
4. Hold a metal part of the gun firmly to the side of a  
grounded metal pail, and trigger the gun to relieve  
pressure.  
5. Lock the gun trigger safety.  
306878 7  
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Maintenance  
Cleaning  
WARNING  
When changing fluids or colors, the regulator should  
be disassembled and cleaned. Regular cleaning and  
inspection, and lubrication of the piston (15) and piston  
packing (10) are necessary to keep the fluid regulator  
working properly.  
COMPONENT RUPTURE HAZARD  
To reduce the risk of serious bodily inju-  
ry, including fluid injection or splashing in  
the eyes or on the skin, always follow  
the Pressure Relief Procedure on page 7 before  
adjusting, cleaning, repairing, or removing the regu-  
lator from the system.  
1. Relieve all the air and fluid pressure in the system.  
2. Remove the regulator from the system.  
Never pressurize the system with the fluid regula-  
tor adjusting knob removed.  
3. Disassemble the regulator, referring to the Parts  
Drawing on page 9. Clean and inspect all parts.  
Never completely remove the adjusting knob when  
system pressure is present.  
CAUTION  
Use special care when handling the hard carbide  
portions of the piston (13) and seat (12). Damage will  
cause poor operation and leakage.  
Flushing  
D Flush before changing colors, before fluid can dry in  
the equipment, at the end of the day, before storing,  
and before repairing equipment.  
Repairing  
D Flush at the lowest pressure possible. Check  
Normally, only the ball support (21), seat (20) and  
piston packing (10) will ever need replacement. Repair  
Kit 220139 is available to replace these parts. See  
page 9.  
connectors for leaks and tighten as necessary.  
D Flush with a fluid that is compatible with the fluid  
being dispensed and the equipment wetted parts.  
1. Lubricate the piston packing (10), piston (15), and  
spring locater (11) with lithium base grease.  
1. Record the pressure adjustment setting of the  
regulator before flushing.  
2. Place the washer (19) over the pointed end of the  
piston (15).  
2. Shut off the pump and relieve fluid pressure in the  
system by triggering the gun and opening the back  
pressure valve or other bypass valve.  
3. Place the packing (10), with its lips facing down,  
over the pointed end of the piston (15) and against  
the washer (19).  
3. Never exceed the maximum working pressure of  
the lowest rated system component.  
4. Insert the piston (15) into the bottom of the cylin-  
der (7) and gently work it into place.  
4. Open the fluid regulator by turning the adjusting  
knob (6) fully clockwise.  
5. Reassemble the remaining parts in reverse order  
of disassembly. Torque the valve seat (20) into the  
housing to 175 to 200 in-lb (20 to 22 NSm). Over  
tightening could break off the hex portion of the  
seat.  
5. Supply solvent to the system. Set pump to the  
lowest possible pressure, and start pump.  
6. Flush until thoroughly clean.  
7. Adjust the fluid regulator to return to the desired  
fluid pressure setting.  
NOTE: Do not allow paint or solvent to set in the  
system for a long time. Fluid could dry on the piston,  
causing leakage at the piston packing. If leakage  
occurs, disassemble and clean the regulator.  
8 306878  
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Parts  
16  
18  
6
8n  
13  
9
8
11  
5*  
7
Torque to  
20*  
175 to 200 in-lb  
(20 to 22 NSm)  
17  
*10  
19  
3
Use Loctiter Grade  
TL242 on threads  
2
Install with  
lips down  
14  
12  
*15  
1
Torque to  
55 to 65 in-lb  
Mounting  
Parts  
Use Loctiter  
Grade 601  
on threads  
26  
1
(6.3 to 7.3 NSm)  
4
Model 206661, Series G  
Includes items 1–20  
Model 217576, Series D  
Includes items 1–26  
REF  
REF  
NO. PART NO. DESCRIPTION  
QTY  
NO. PART NO. DESCRIPTION  
QTY  
1
100322  
100639  
101885  
101954  
150513  
100307  
LOCK WASHER, ext shkprf; 7/16” 2  
(Model 206661 only)  
11  
12  
166988  
167001  
LOCATER, spring  
STUD, mounting; 1/4 npt; 7/16–20 1  
(Model 206661 only)  
STUD, mounting; 1/4 npt; 3/8–16 1  
(Model 217576 only)  
HOUSING, regulator  
CAP, end  
1
LOCK WASHER, ext shkprf; 3/8”  
(Model 217576 only)  
SCREW, soc hd cap; 1/4–20 x  
1–3/4”  
2
2
156953  
2
3
4
13  
14  
15  
16  
17  
18  
19  
177125  
167016  
220900* PISTON, valve  
167018  
167019  
167020  
171885  
1
1
1
1
1
2
1
RING, int retaining; 0.75” (19 mm) 1  
housing dia.; cadmium plated  
NUT, jam; 7/16–20  
(Model 206661 only)  
NUT, jam; 3/8–16  
1
1
BAR, piston  
BAR, valve ball support  
SPACER, bar  
(Model 217576 only)  
WASHER, back–up; acetal  
5
6
7
8
9
150670* GASKET; copper  
1
1
1
2
1
homopolymer  
248899* SEAT, valve, support ball  
WASHER; 3/8”  
(Model 217576 only)  
These parts are included in Repair Kit 220139,  
166976  
KNOB, adjusting  
20  
26  
1
1
166982  
CYLINDER, regulator  
100023  
166985n SEAL, o–ring; PTFE  
166986  
SPRING, helical compression  
*
(Model 206661 only)  
which may be purchased separately.  
501511  
SPRING, helical compression  
(Model 217576 only)  
1
1
n Keep these spare parts on hand to reduce down  
time.  
10  
111796* PACKING, u–type; PTFE  
306878 9  
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Notes  
10 306878  
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Accessories  
Use Only Genuine Graco Parts and Accessories  
Compression Springs  
Fluid Pressure Gauges  
Attaches to optional regulator outlet.  
2 in. (51 mm) dial.  
NOTE: On Model 206661, standard spring 166986  
(ref. no. 9) works best at 2000–3000 psi (13.5–21  
MPa,135–207 bar), although it will work at 1000 to  
2000 psi (7–13.5 MPa, 70–135 bar). For best results at  
pressures less than 2000 psi (13.5 MPa, 135 bar),  
order the following applicable spring.  
102397  
101696  
0–3000 psi (0–21 MPa, 0–207 bar)  
1/4 npt(m) center back fitting  
0–1000 psi (0–7 MPa, 0–70 bar)  
1/4 npt(m) bottom fitting  
501510  
501511  
Recommended for 1000–2000 psi  
(7–13.5 MPa, 70–135 bar). Red color.  
Recommended for 0–1000 psi (0–7  
MPa, 0–70 bar) range. Blue color.  
(Standard on model 217576)  
UHMW Polyethylene U-Type Packing  
108317 (included in Repair Kit 220135)  
Use instead of 111796 (ref. no. 10), with abrasive  
fluids.  
Optional Valve Seat 206523  
For use in low flow rate applications.  
Technical Data  
Category  
Data  
Maximum Fluid Inlet Pressure  
Regulated Fluid Pressure Range  
3000 psi (21 MPa, 207 bar)  
Models 206661: 1000–3000 psi (7–21 MPa, 70–207 bar)  
Model 217576: 200–1000 psi (1.4–7 MPa, 14–70 bar)  
Maximum Flow Rate  
Fluid Inlet  
3.5 gpm (13.25 liters/min) with 70 centipoise fluid at 75_F (23_C)  
3/8 npt(f)  
Fluid Outlet (two)  
Height  
1/4 npt(f)  
6 in. (152 mm)  
2.687 in. (68 mm)  
Diameter  
Wetted Parts  
Tungsten Carbide, Copper, Cadmium and Zinc–plated Steels, Acetal  
Homopolymer, PTFE, Chrome–plated Stainless Steel  
Canadian Registration Number (CRN): Models 206661 and 217576  
Alberta – 0C04874.52  
Ontario – 0C4874.5R1  
306878 11  
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Graco Standard Warranty  
Graco warrants all equipment manufactured by Graco and bearing its name to be free from defects in material and workmanship on the  
date of sale by an authorized Graco distributor to the original purchaser for use. With the exception of any special, extended, or limited  
warranty published by Graco, Graco will, for a period of twelve months from the date of sale, repair or replace any part of the equipment  
determined by Graco to be defective. This warranty applies only when the equipment is installed, operated and maintained in accor-  
dance with Graco’s written recommendations.  
This warranty does not cover, and Graco shall not be liable for general wear and tear, or any malfunction, damage or wear caused by  
faulty installation, misapplication, abrasion, corrosion, inadequate or improper maintenance, negligence, accident, tampering, or sub-  
stitution of non–Graco component parts. Nor shall Graco be liable for malfunction, damage or wear caused by the incompatibility of  
Graco equipment with structures, accessories, equipment or materials not supplied by Graco, or the improper design, manufacture,  
installation, operation or maintenance of structures, accessories, equipment or materials not supplied by Graco.  
This warranty is conditioned upon the prepaid return of the equipment claimed to be defective to an authorized Graco distributor for  
verification of the claimed defect. If the claimed defect is verified, Graco will repair or replace free of charge any defective parts. The  
equipment will be returned to the original purchaser transportation prepaid. If inspection of the equipment does not disclose any defect  
in material or workmanship, repairs will be made at a reasonable charge, which charges may include the costs of parts, labor, and  
transportation.  
THIS WARRANTY IS EXCLUSIVE, AND IS IN LIEU OF ANY OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT  
NOT LIMITED TO WARRANTY OF MERCHANTABILITY OR WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE.  
Graco’s sole obligation and buyer’s sole remedy for any breach of warranty shall be as set forth above. The buyer agrees that no other  
remedy (including, but not limited to, incidental or consequential damages for lost profits, lost sales, injury to person or property, or any  
other incidental or consequential loss) shall be available. Any action for breach of warranty must be brought within two (2) years of the  
date of sale.  
Graco makes no warranty, and disclaims all implied warranties of merchantability and fitness for a particular purpose in connection  
with accessories, equipment, materials or components sold but not manufactured by Graco. These items sold, but not manufactured  
by Graco (such as electric motors, switches, hose, etc.), are subject to the warranty, if any, of their manufacturer. Graco will provide  
purchaser with reasonable assistance in making any claim for breach of these warranties.  
In no event will Graco be liable for indirect, incidental, special or consequential damages resulting from Graco supplying equipment  
hereunder, or the furnishing, performance, or use of any products or other goods sold hereto, whether due to a breach of contract,  
breach of warranty, the negligence of Graco, or otherwise.  
FOR GRACO CANADA CUSTOMERS  
The parties acknowledge that they have required that the present document, as well as all documents, notices and legal proceedings  
entered into, given or instituted pursuant hereto or relating directly or indirectly hereto, be drawn up in English. Les parties reconnais-  
sent avoir convenu que la rédaction du présente document sera en Anglais, ainsi que tous documents, avis et procédures judiciaires  
exécutés, donnés ou intentés à la suite de ou en rapport, directement ou indirectement, avec les procedures concernées.  
Graco Information  
TO PLACE AN ORDER, contact your Graco distributor or call to identify the distributor closest to you:  
Phone: 612–623–6921 or Toll Free: 1–800–328–0211 Fax: 612–378–3505  
All written and visual data contained in this document reflects the latest product information available at the time of publication.  
Graco reserves the right to make changes at any time without notice.  
Original instructions. This manual contains English. MM 306878  
Graco Headquarters: Minneapolis  
International Offices: Belgium, China, Japan, Korea  
GRACO INC. AND SUBSIDIARIES S P.O. BOX 1441 S MINNEAPOLIS MN 55440–1441 S USA  
Copyright 1992, Graco Inc. All Graco manufacturing locations are registered to ISO 9001.  
Revised 07/2011  
12 306878  
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