Table of Contents
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INSTRUCTIONS-PARTS LIST
This manual contains important
warnings and information.
READ AND KEEP FOR REFERENCE.
INSTRUCTIONS
120 VAC, 15 AMP
ULTRA PLUS+ 1000
AIRLESS PAINT SPRAYER
3000 psi (210 bar , 21 MPa) Maximum Working Pressure
Model 231–373, Series A
Complete sprayer on Upright cart with hose,
gun, RAC IV
DripLess
and SwitchTip
U.S. PATENT NO. 4,323,741; 4,397,610
PATENTED 1983, CANADA
AND OTHER PATENTS PENDING
GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440–1441
Tip Guard
http://www.graco.com
COPYRIGHT 1996, GRACO INC.
Graco Inc. is registered to I.S. EN ISO 9001
First choice when
quality counts.
MODEL 231–373
308–619
Rev. D
Supersedes Rev. A
PCN B; unreleased
Rev. C
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Table of Contents
Related Manuals for Graco 231–373
Summary of Contents for Graco 231–373
- Page 1 Tip Guard and SwitchTip U.S. PATENT NO. 4,323,741; 4,397,610 PATENTED 1983, CANADA AND OTHER PATENTS PENDING MODEL 231–373 GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440–1441 http://www.graco.com COPYRIGHT 1996, GRACO INC. Graco Inc. is registered to I.S. EN ISO 9001...
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Page 2: Table Of Contents
The pump has a wet-cup which, when filled with outlet. Graco Throat Seal Liquid, helps prevent damage to the throat packings and piston rod. Pressure Drain Valve Fluid Filter The pressure drain valve provides pressure relief of the sprayer. - Page 3 Fig. 1 Motor DC motor, 120 Vac, 15A, 1 phase Pressure Adjusting Knob Controls fluid outlet pressure ON/OFF Switch Power switch that controls 120 Vac main power to sprayer Drive Assembly Transfers power from DC motor to the displacement pump Fluid Filter Final filter of fluid between source and spray gun Secondary Fluid Outlet...
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Page 4: Warnings
Read all instruction manuals, tags, and labels before operating the equipment. Use the equipment only for its intended purpose. If you are not sure, call your Graco distributor. Do not alter or modify this equipment. Use only genuine Graco parts. - Page 5 WARNING WARNING INJECTION HAZARD Spray from the gun, leaks or ruptured components can inject fluid into your body and cause ex- tremely serious injury, including the need for amputation. Fluid splashed in the eyes or on the skin can also cause serious injury. Fluid injected into the skin is a serious injury.
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Page 6: Fire And Explosion Hazard
WARNING WARNING FIRE AND EXPLOSION HAZARD Improper grounding, poor ventilation, open flames or sparks can cause a hazardous condition and result in a fire or explosion and serious injury. If there is any static sparking or you feel an electric shock while using this equipment, stop spraying immediately. -
Page 7: Setup
Setup NOTE: See Fig. 2 while doing the setup. WARNING 1. Fill the packing nut/wet-cup 1/3 full with Graco To reduce the risk of serious injury from static Throat Seal Liquid (TSL), supplied. sparking, injection, or over pressurization and rupture of the hose or gun, all hoses must be electri- 2. - Page 8 Setup PRESSURE ADJUSTING KNOB ON/OFF SWITCH PRESSURE PACKING NUT/ WET–CUP DRAIN VALVE FILL 1/3 FULL WITH TSL 1/4 npsm(m) FLUID OUTLET NIPPLE DO NOT INSTALL ANY SHUTOFF DEVICE HERE Fig. 2...
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Page 9: Startup
Startup Use this procedure each time you start the sprayer to c. Release the trigger. Engage the gun safety latch. help ensure the sprayer is ready to operate and that you 5. Check all fluid connections for leaks. Relieve start it safely. the fluid pressure before tightening connections. -
Page 10: Cleaning A Clogged Tip
Startup Cleaning a Clogged Tip 4. Return the handle to the original position, disengage the gun safety latch, and resume spraying. WARNING 5. If the tip is still clogged, engage the gun safety latch, shut off and unplug the sprayer, and open the pres- FLUID INJECTION HAZARD sure drain valve to relieve pressure. -
Page 11: Shutdown And Care
Shutdown and Care 6. Coil the hose and hang it on the hose rack when WARNING storing it, even for overnight, to help protect the hose from kinking, abrasion, coupling damage, etc. FLUID INJECTION HAZARD To reduce the risk of serious injury, follow the illustrated Pressure Relief Procedure warning on page 13 when- ever you are instructed to relieve pressure. -
Page 12: Flushing
Flushing NOTE: Several flushes are often required to thoroughly clean the system and prepare it for the next fluid to be sprayed, or to store the sprayer. Use this chart to determine the required flushing order for the fluid you are using, and then follow the procedure below for flushing. -
Page 13: Troubleshooting
Troubleshooting Pressure Relief Procedure Disengage the gun safety latch. Hold a metal part of the gun firmly to the side of a grounded metal pail, and trig- To reduce the risk of serious bodily injury, including fluid in- ger the gun to relieve pressure. jection, splashing fluid or solvent in the eyes or on the skin, or injury from moving parts or electric shock, always follow Engage the gun safety latch. - Page 14 MOTOR WON’T OPERATE (Continued) TYPE OF PROBLEM WHAT TO CHECK WHAT TO DO If check is OK, go to next check When check is not OK refer to this column Follow Pressure Relief 1 . Check leads from motor to be sure they are 1.
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Page 15: Low Output
LOW OUTPUT TYPE OF PROBLEM WHAT TO CHECK WHAT TO DO If check is OK, go to next check When check is not OK refer to this column Low Output 1. Follow Pressure Relief Procedure Warn- 1. Check for worn spray tip. ing then replace tip. -
Page 16: Excessive Pressure Fluctuations
NO OUTPUT TYPE OF PROBLEM WHAT TO CHECK WHAT TO DO If check is OK, go to next check When check is not OK refer to this column Motor runs and pump strokes 1. Check paint supply. 1. Refill and reprime pump. 2. -
Page 17: Electrical Short
MOTOR IS HOT AND RUNS INTERMITTENTLY TYPE OF PROBLEM WHAT TO CHECK WHAT TO DO If check is OK, go to next check When check is not OK refer to this column Motor is hot and runs intermit- 1. Determine if sprayer was operated at high 1. -
Page 18: Spin Test
Spin Test lutions before coming to a complete stop. If the motor WARNING does not spin freely, the armature is shorted and the mo- tor must be replaced. See page 28. ELECTRIC SHOCK HAZARD Do not touch the brushes, leads, springs or brush holders while the sprayer is plugged in to reduce the risk of electric shock and serious bodily injury. -
Page 19: General Repair Information
General Repair Information WARNING CAUTION To reduce the risk of a pressure control malfunction: ELECTRIC SHOCK HAZARD To reduce the risk of serious injury, in- Always use needle nose pliers to disconnect a cluding electric shock, DO NOT touch wire. Never pull on the wire, pull on the connec- any moving parts or electrical parts with tor. -
Page 20: Motor Brush Replacement
Motor Brush Replacement NOTE: Replace the brushes when they have worn to 5. Inspect the commutator for excessive pitting, less than 1/2 in. Note that the brushes wear dif- burning or gouging. A black color on the commuta- ferently on each side of the motor, so check them tor is normal. -
Page 21: Power Supply Cord Replacement
11. Test the brushes. CAUTION a. Remove the pump connecting rod pin. Do not run the sprayer dry for more than 30 seconds while checking the brushes to avoid b. With the sprayer OFF, turn the pressure con- damaging the displacement pump packings. trol knob fully counterclockwise to minimum pressure. -
Page 22: On/Off Switch Replacement
On/Off Switch Replacement (Fig. 16) 8. Powder the inside of the rubber boot (309) with WARNING talcum powder, then shake the excess out of the boot. FLUID INJECTION HAZARD To reduce the risk of serious injury, 9. Install the nut and rubber boot and tighten. follow the illustrated Pressure Relief Procedure warning on page 13 when- 10. -
Page 23: Pressure Control Replacement
Pressure Control Replacement 3. Remove the four mounting screws and washers WARNING (302, 303, 304) from the pressure control board/ cover (301). See Fig. 18. FLUID INJECTION HAZARD To reduce the risk of serious injury, 4. Carefully remove the pressure control board/cover follow the illustrated Pressure Relief (301) so as not to stress the cables. - Page 24 Pressure Control Replacement 12. Reassemble in the reverse order; attach ground WARNING wire (C), power leads (L1 and L2), the red leads to the TS terminals on the circuit board (B1), the M+ Do not attempt to adjust or calibrate the pressure and M–...
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Page 25: Motor
Bearing Housing and Connecting Rod Replacement (Fig. 19) 11. Align the connecting rod (68) with the crank (E) WARNING and the drive housing locating pins (G) with the bearing housing (69) holes. Push the bearing FLUID INJECTION HAZARD housing onto the drive housing or tap it into place To reduce the risk of serious injury, with a plastic mallet. - Page 26 Drive Housing Replacement (Fig. 20) 4. Lightly tap the lower rear of the bearing housing WARNING (69) with a plastic mallet to loosen it from the drive housing (67). Pull the assembled bearing housing FLUID INJECTION HAZARD and connecting rod straight off the drive housing. To reduce the risk of serious injury, follow the illustrated Pressure Relief 5.
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Page 27: Drive Housing Replacement
Drive Housing Replacement LIBERALLY APPLY GREASE 25,23 TORQUE TO 175 in-lb (19 N.m) Fig. 20... - Page 28 Motor Replacement (Fig. 21 and 22) 12. Remove the two lower screws (13) and lockwash- WARNING ers (20) and then the two upper screws (16) and lockwashers (20) from the front of the motor (73). FLUID INJECTION HAZARD To reduce the risk of serious injury, 13.
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Page 29: Motor Replacement
Motor Replacement DETAIL Shows position of conduit seal (29) in conduit connector (345) M– – MOTOR POWER CORD Fig. 21 LIBERALLY APPLY GREASE 26 20 Fig. 22... -
Page 30: Displacement Pump Repair
ASSEMBLY injury. If the sleeve cannot be removed easily using *225 215* the tool, return the sleeve and cylinder to your Graco distributor for removal. 203* 214* 9. Screw the large nut (B) of the tool into the top of the cylinder (19). - Page 31 Displacement Pump Repair Reassembling the Pump NOTE: Alternate leather and plastic packings as shown in Fig. 27. The lips of the throat “V” packings must face down. The lips of the piston “V” pack- ings must face up. The lips of the U–cup seal 225* (203*) face down.
- Page 32 Displacement Pump Repair 10. Coat the piston rod and packings with oil. Carefully slide the assembly INTO THE TOP OF THE SLEEVE. NOTE: The tapered end of the sleeve is the bottom of it. See Fig. 30. 11. Place a new o-ring (202*) firmly in the cylinder groove.
- Page 33 (69) will be damaged. Be sure to tighten the locknut firmly. 5. Tighten the packing nut (216) just enough to stop leakage, but no tighter. Fill the wet-cup/packing nut 1/3 full with Graco TSL (65). Fig. 31 Install the pump ( Fig. 32).
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Page 34: Parts Drawing - Sprayer
Parts Drawing – Sprayer Ultra PLUS+ 1000 Sprayers Model 231–373, Series A LABEL Includes items 1 – 102 Complete Sprayer LABEL LABEL 73D* LABEL LABEL LABEL 11 10 Ref 70 SEE PARTS ON PAGE 37 Ref 36... -
Page 35: Parts List - Sprayer
Parts List – Sprayer Ultra PLUS+ 1000 Sprayers Model 231–373, Series A Includes items 1 – 102 Complete Sprayer NO. PART NO. DESCRIPTION NO. PART NO. DESCRIPTION 065–312 CONDUIT, 0.7 ft 192–027 SLEEVE electrical 290–024 LABEL, ID, control, top pecify length when ordering 110–963 SCREW, 290–023... -
Page 36: Parts Drawing And List – Displacement Pump
Parts Drawing & List – Displacement Pump Model 222–580, Series A Sleeved Displacement Pump Includes items 202 to 225 209* NO. PART NO. DESCRIPTION 225* PTFE 108–526* PACKING, o–ring, 107–093* SEAL, u–cup, polyurethane 105–445* BALL, sst 210* 179–810 PLUG 1 213* *207 178–939*... -
Page 37: Parts Drawing - Pressure Control
Parts Drawing – Pressure Control Parts List – Pressure Control Basic Pressure Control for the ULTRA) PLUS+ 1000 Sprayers PART NO. DESCRIPTION PART NO. DESCRIPTION 108–358 SEAL, shaft 239–042 BOARD, pressure control 112–768 KNOB, control 107–251 SCREW,panhead, 10–24 x 1” 185–565 LABEL, knob 112–610... -
Page 38: Wiring Diagram
Wiring Diagram PRESSURE CONTROL BOARD/COVER 239–042 ON/OFF SWITCH CIRCUIT PRESSURE BOARD TRANSDUCER (B1) POTENTIOMETER TP1 (behind) TP4 (behind) BROWN (L1) BLUE (L2) BLACK/WHITE FILTER BOARD BLACK M – BLUE(L2) BLUE – + BLACK M – GREEN/YELLOW GROUND GREEN/YELLOW WIRE MOTOR BROWN WINDINGS POWER SUPPLY CORD... -
Page 39: Accessories
English, order one of the following labels to apply to your sprayer. The drawing shows the best placement of these labels for good visibility. Order the labels directly from Graco, free of charge. Toll Free: 1–800–328–0211 SUCTION TUBE KIT 208–920... -
Page 40: Graco Phone Number
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.