Graco Septic System 287834 User Manual

Operation  
311485J  
EN  
Displacement Pump  
- Use with Architectural Coatings, Paints, Roof Coatings  
and Below Grade Coatings -  
Model 287834  
4000 psi (27.6 MPa, 275.8 bar) Maximum Working Pressure  
Important Safety Instructions  
Read all warnings and instructions in this  
manual. Save these instructions.  
ti7629a  
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Operation  
Operation  
3. Open prime valve (vertical).  
Pressure Relief Procedure  
System pressure must be manually relieved to prevent  
it from starting or spraying accidentally. Fluid under  
high pressure can be injected into the skin and cause  
serious injury. To reduce risk of injury from injection,  
follow this procedure whenever you are instructed to  
relieve pressure, stop spraying, service equipment or  
install or clean spray tip (read Warnings, page 2).  
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  
tip guard retaining nut or hose end coupling to relieve  
pressure gradually, then loosen completely. Then clean  
tip and hose.  
1. Set pump valve OFF. Turn engine OFF.  
TIꢀꢁꢂꢃA  
2. Turn pressure to lowest setting. Trigger gun into pail  
to relieve pressure.  
311485J  
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Service  
Service  
5. Using a wrench, loosen filter housing fitting (110)  
and remove housing from pump.  
Removal  
1. Flush pump (36). Stop pump on down stroke if pos-  
sible.  
110  
2. Perform Pressure Relief Procedure, page 3.  
3. Remove suction set (147) from pump (36).  
ti7119b  
6. Using a pliers, remove clip (121).  
36  
121  
147  
ti7597b  
ti7789b  
4. Remove paint and drain lines from filter housing.  
7. Slide cover (124) up.  
124  
ti7845b  
ti7816b  
4
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Service  
8. Separate coupling (125) and remove.  
Ball Adjustment  
1. Using a hammer, loosen and remove intake valve  
(213).  
125  
ti7814b  
213  
ti7875b  
2. Disassemble and clean all parts and o-rings (207).  
209  
9. Using a hammer, loosen jam nut (122). Unscrew  
pump (36) from power head.  
215  
214  
207  
122  
212  
213  
36  
ti7782b  
ti7879b  
10. Remove pump (36).  
3. Select proper ball travel for material sprayed. Reas-  
semble as shown.  
Longest Ball Travel  
(for heavy material)  
Shortest Ball Travel  
(for light material)  
36  
ti7804b  
ti7881a  
ti7874a  
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Service  
4. Remove parts. Note orientation of parts for reas-  
sembly.  
Piston Rod Assembly  
1. Tap piston rod out of cylinder with a hammer or flip  
over and tap piston rod out against bench.  
NOTE: Sleeve may come out of cylinder with piston  
rod.  
222  
2. If piston rod and sleeve did not separate, invert pis-  
ton rod (222) and sleeve (220) and pound on hard  
surface until piston rod comes out of sleeve.  
218  
203  
Lips Up  
223  
Lips Up  
219  
206  
210  
ti7878a  
ti7877a  
5. Clean all parts with a compatible solvent and  
inspect them for wear or damage. Replace any worn  
parts.  
Reassembly  
Component Rupture Hazard. Do not clean or wipe  
piston valve threads. Cleaning the piston valve threads  
could destroy the special sealing patch and cause the  
piston valve to come loose during operation, causing  
pump bursting and possible serious bodily injury.  
1. Soak all leather packings (237) in SAE 30W oil for at  
least 1 hour prior to assembly.  
2. Alternately stack V-Packings (203) and V-Packings  
(223).  
3. Hold piston valve (210) securely in vice. Using a  
wrench, separate piston valve (210) from rod (222).  
222  
208  
Torque to 200  
ft.-lb (272 N.m)  
218  
203  
223  
Lips Up  
Lips Up  
219  
206  
210  
ti7880a  
ti7878a  
6
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Service  
3. Grease piston rod (222) packings and top edge of  
sleeve (220).  
6. Grease o-ring (207) and place on sleeve. Slide one  
o-ring (207) inside cylinder (205). Slide sleeve/pis-  
ton rod assembly (222) into bottom of cylinder.  
222  
207  
222  
205  
220  
ti7898a  
4. Carefully slide piston rod assembly (222) into top  
edge of sleeve (220).  
222  
ti7895a  
207  
7. Install male gland (204) in cylinder (205).  
8. Alternately stack UHMWPE packings (238) and  
leather packings (237) (note orientation).  
9. Place female gland (217) in top of cylinder. Loosely  
install packing nut (202) and plug (201).  
220  
201  
202  
217  
ti7896a  
5. Grease top inch or two of piston rod (222) that will  
go through the cylinder throat packings.  
238  
Lips Down  
237  
Lips Down  
222  
204  
222  
ti7897a  
205  
ti7884a  
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Service  
10. Reassemble intake valve (213) as shown.  
209  
14. Hand tighten jam nut (122). Then tighten securely  
1/8 to 1/4 turn with hammer or torque to 330 ft-lb  
(447.4 N•m).  
215  
214  
207  
122  
212  
213  
ti7817a  
ti7873a  
15. Install coupling (125) around pump rod.  
11. Place intake valve (213) assembly in vice. Install  
cylinder (205) assembly to intake valve. Torque to  
350 ft-lb (475 N•m).  
125  
ti7771a  
16. Slide cover (124) over coupling (125).  
ti7882a  
12. Torque packing nut (202) down to 50 ft-lb (68 N•m).  
13. Screw jam nut (122) to bottom of pump threads  
(36). Screw pump completely up into power head.  
122  
124  
125  
ti7815a  
ti7779a  
36  
8
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Service  
17. Replace clip pin (121) to secure.  
19. Connect suction hose (147) to pump outlet (36).  
36  
121  
125  
ti7809a  
ti7764a  
18. Reinstall filter housing (110).  
147  
110  
ti7772a  
311485J  
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Parts  
Parts  
Ref. Part  
Description  
Qty.  
Ref. Part  
Description  
Qty.  
216 15H335 FITTING, nipple, 1 inch NPT  
217* 15H251 GLAND, female, piston steel  
218* 15G282 GLAND, male  
219* 15G283 GLAND, female  
220 287833 SLEEVE, cylinder  
222 287832 ROD, piston  
223* 15G284 V-PACKING, brown  
237* 184307 PACKING, vee, leather  
238* 108451 PACKING, vee, (UHMWPE)  
1
1
1
1
1
1
2
2
3
201* 116385 PLUG  
1
1
3
1
1
1
3
1
3
1
1
202 15G198 NUT, packing  
203* 15G285 V-PACKING, UHMWPE, blue  
204* 15H250 GLAND, male, throat  
205 287836 CYLINDER, pump  
206* 102972 BALL, sst, 0.875 in.  
207*† 116377 PACKING, o-ring  
208 15G196 GUIDE, ball  
209 197306 SHIM, inlet  
210 287837 VALVE, piston  
212† 287838 SEAT, carbide, includes 214 and  
207  
* These parts are included in repair kit 287835, which  
may be purchased separately.  
213 15G195 HOUSING, intake (foo)  
214*† 108001 BALL, sst, 1.5 in.  
215 15G199 GUIDE, ball  
1
1
1
† These parts are also included in Carbide Seat Kit  
287838, which may be purchased separately.  
201  
Assemble with lips facing up  
2
1
202  
217  
237  
204  
Assemble with lips facing down  
205  
1
238  
1
216  
207  
220  
222  
207  
209  
208  
215  
218  
214  
207  
212  
223  
2
2
203  
219  
206  
210  
213  
ti7630a  
10  
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Notes  
Notes  
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Graco Standard Warranty  
Graco warrants all equipment referenced in this document which is manufactured by Graco and bearing its name to be free from defects in  
material and workmanship on the date of sale 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 accordance 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 substitution 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 reconnaissent 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 procédures concernées.  
Graco Information  
TO PLACE AN ORDER, contact your Graco distributor or call 1-800-690-2894 to identify the nearest distributor.  
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 311485  
Graco Headquarters: Minneapolis  
International Offices: Belgium, China, Japan, Korea  
GRACO INC. AND SUBSIDIARIES • P.O. BOX 1441 • MINNEAPOLIS MN 55440-1441 • USA  
Copyright 2006, Graco Inc. All Graco manufacturing locations are registered to ISO 9001.  
Revised September 2012  
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