Graco ultra 750 Instruction Manual
  1. Manuals
  2. Brands
  3. Graco Manuals
  4. Paint Sprayer
  5. ultra 750
  6. Instruction manual
Graco ultra 750 Instruction Manual

Graco ultra 750 Instruction Manual

Airless
Hide thumbs Also See for ultra 750:
Table of Contents

Advertisement

Quick Links

INSTRUCTIONS-PARTS LIST
120 VAC, 15 AMP
ULTRA 750 AIRLESS PAINT SPRAYER
3000 psi (210 bar) MAXIMUM WORKING PRESSURE
Model 231–033, Series C
Basic sprayer on Upright cart without
hose or gun
Model 231–042, Series B
Complete sprayer on Upright cart with hose,
gun, RAC IV , DripLess
and SwitchTip
Model 221–120, Series C
Basic sprayer on Lo–Boy cart without
hose or gun
Model 221–130, Series B
Complete sprayer on Lo–Boy 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
Hazard of Using Fluids Containing Halogenated Hydrocarbons
Never use 1,1, 1–trichloroethane, methylene chloride, other halogenated hydrocarbon solvents or fluids containing
such solvents in this equipment. Such use could result in a serious chemical reaction, with the possibility of explo-
sion, which could cause death, serious bodily injury and/or substantial property damage.
Consult your fluid suppliers to ensure that the fluids being used are compatible with aluminum and zinc parts.
Refer to the Technical Data on page 47 for more information.
GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440–1441
This manual contains IMPORTANT
INSTRUCTIONS and WARNINGS.
READ AND RETAIN FOR REFERENCE.
Tip Guard
Tip Guard
COPYRIGHT 1986, GRACO INC.
WARNING
307–786
Rev E
Supersedes D
MODEL 231–042 SHOWN

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the ultra 750 and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for Graco ultra 750

Summary of Contents for Graco ultra 750

  • Page 1 Consult your fluid suppliers to ensure that the fluids being used are compatible with aluminum and zinc parts. Refer to the Technical Data on page 47 for more information. GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440–1441 COPYRIGHT 1986, GRACO INC.

  • Page 2: Table Of Contents

    ULTRA 750 BASIC COMPONENTS Drive Assembly The sealed drive assembly transfers power from the DC Your new Ultra 750 Sprayer functions and operates dif- motor to the displacement pump. ferently than other airless paint sprayers. This section will Displacement Pump help you become familiar with the sprayer before operat- ing it.
  • Page 3 TRIGGER SAFETY SHOWN ENGAGED MOTOR PRESSURE ADJUSTING KNOB DRIVE ASSEMBLY FLUID FILTER RESET BUTTON SECONDARY HOSE OUTLET ON/OFF SWITCH PRESSURE CONTROL PAIL HANGER ON UPRIGHT CAR TS ONL Y FLUID OUTLET 50 FT (15 M) DISPLACEMENT MAIN HOSE PUMP PRESSURE DRAIN VALVE 3 ft.

  • Page 4: Safety Warnings

    SAFETY WARNINGS HIGH PRESSURE SPRAY CAN CAUSE SERIOUS INJURY. FOR PROFESSIONAL USE ONLY. OBSERVE ALL WARNINGS Read and understand all instruction manuals before operating equipment. FLUID INJECTION HAZARD General Safety Safety Latch This equipment generates very high fluid pressure. Spray from the Whenever you stop spraying, even for a moment, always set the gun, leaks or ruptured components can inject fluid through your gun safety latch in the closed or “safe”...
  • Page 5 DO NOT expose Graco hose to temperatures above 180 F (82 C) or below –40 F (–40...

  • Page 6: Avertissement

    AVERTISSEMENT La pulvérisation à haute pression peut causer des blessures très graves. Réservé exclusivement à l’usage professionnel. Observer toutes les consignes de sécurité. Bien lire et bien comprendre tous les manuels d’instructions avant d’utiliser le matériel. RISQUES D’INJECTION Consignes generales de sécurité Verrou d e s écurité...
  • Page 7 RISQUES EN CAS DE MAUVAISE UTILISATION DU MATERIEL Consignes générales de sécurité Pression Toute utilisation anormale de l’appareil de pulvérisation ou des ac- Ce pulvérisateur peut produire une PRESSION MAXIMUM DE cessoires comme, par exemple, la mise sous une pression exces- TRAVAIL 210 bar (3000 lb/po2).

  • Page 8: Advertencia

    ADVERTENCIA EL ROCIADO a ALTA PRESIÓN PUEDE CAUSAR GRAVES LESIONES. SOLO PARA USO PROFESIONAL. RESPETE LOS AVISOS DE ADVERTENCIA. Lea y entienda todo el manual de instrucciónes antes de manejar el equipo. PELIGRO DE INYECCIÓN DE FLUIDO Seguridad general Aparatos de seguridad de la pistola pulverizadora Este equipo genera un fluido a una presión muy alta.
  • Page 9 PELIGRO POR MAL USO DEL EQUIPO Seguridad general Presión del sistema Cualquier mal uso del equipo pulverizador o los accesorios, tal está pulverizadora puede desarrollar 210 barías (3000 psi) de como sobre presurización, modificación de piezás, uso de presión DE TRABAJO MÁXIMA. Asegurar que todo el equipo matériales y productos quimicos incompatibles, o utilización de pulverizador y sus accesorios tienen la capacidad para aguan- piezás dañadas o desgastadas, puede hacen que se rompan...

  • Page 10: Setup

    3. Fill the Packing Nut/Wet– FILL 1/3 FULL Cup. Fill the packing nut/wet– WITH TSL cup 1/3 full with Graco Throat Seal Liquid (TSL), supplied. 1/4 npsm(m) FLUID 4. Check the Electrical Service. OUTLET NIPPLE a. Be sure the electrical serv-...

  • Page 11: Operation

    OPERATION WARNING 6. To prime the pump , hold a metal part of the gun Pressure Relief Procedure firmly against and aimed into a metal waste con- To reduce the risk of serious bodily injury, including tainer. Refer to Fig 1 1–1. Squeeze the trigger and fluid injection, splashing fluid or solvent in the eyes hold it open, turn the ON/OFF switch to ON, and or on the skin, or injury from moving parts or electric...

  • Page 12: Cleaning A Clogged Tip

    OPERATION Cleaning a Clogged Tip 1. Clean the front of the tip frequently during the day’s operation. First, follow the Pressure Relief Proce- dure Warning on page 11. 2. If the spray tip does clog, release the gun trigger, en- WARNING gage the gun safety latch, and rotate the RAC IV To reduce the risk of serious bodily injury from from...

  • Page 13: Shutdown And Care

    SHUTDOWN AND CARE WARNING To reduce the risk of serious bodily injury, including fluid injection or splashing in the eyes or on the skin, or injury from moving parts, always follow the Pres- sure Relief Procedure Warning on page 14 before checking, adjusting, cleaning and shutting down the sprayer.

  • Page 14: Flushing Guidelines

    FLUSHING GUIDELINES WARNING Pressure Relief Procedure To reduce the risk of serious bodily injury , including 4. Disengage the gun safety latch. Hold a metal part of the gun firmly to the side of a grounded metal fluid injection, splashing fluid or solvent in the eyes or pail, and trigger the gun to relieve pressure.

  • Page 15: How To Flush

    FLUSHING GUIDELINES How to Flush 7. Hold a metal part of the gun firmly against and aimed into a metal waste container . Refer to Fig 15–2. 1. Follow the Pressure Relief Procedure Warning on Squeeze the trigger and hold it open, turn the ON/ page 14.

  • Page 16: Troubleshooting Guide

    TROUBLESHOOTING GUIDE WARNING Pressure Relief Procedure 5. Engage the gun safety latch. To reduce the risk of serious bodily injury , including 6. Open the pressure drain valve, having a container ready to catch the drainage. Leave the pressure fluid injection, injury from splashing fluid or solvent in drain valve open until you are ready to spray again.
  • Page 17 MOTOR WON’T OPERATE 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 1 . Check leads from bridge (308) to motor to be 1.
  • Page 18 MOTOR WON’T OPERATE 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 Condition B (continued) 6. Check motor thermal cutout switch. Connect 6. Allow motor to cool. Correct cause of over- volt meter to TP6 female and TP9 female.

  • Page 19: 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. Check for worn spray tip. 1. Follow Pressure Relief Procedure Warn- ing then replace tip.

  • Page 20: No Output

    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 21: Motor Is Hot And Runs Intermittently

    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 1. Determine if sprayer was operated at high 1.

  • Page 22: Spin Test

    SPIN TEST WARNING Pressure Before doing this procedure, follow the Relief Procedure W arning on page 24 to reduce the risk of a fluid injection injury , splashing in the eyes or on the skin, injury from moving parts, or electric shock.

  • Page 23: Bridge Test

    BRIDGE TEST Remove the bridge from the pressure control box and In Tests 7 and 8, connect the meter wires as indicated by perform this test to determine if the bridge is functional. the black dots. Touch the indicated “G” wire to one meter Refer to BRIDGE RECTIFIER REPLACEMENT , page wire, and then to the other.

  • Page 24: General Repair Information

    GENERAL REPAIR INFORMATION WARNING 10. Route wires carefully in the pressure control as- Pressure Relief Procedure sembly, guiding them through the legs of the U– shaped bourdon tube. This is to avoid interfering with To reduce the risk of serious bodily injury, including the bourdon tube, which moves as the pressure set- fluid injection, injury from splashing fluid or solvent ting changes, and to avoid pinching the wires be-...

  • Page 25: Motor Brush Replacement

    MOTOR BRUSH REPLACEMENT NOTE: Replace the brushes when they have worn to SPRING less than 1/2 in. Refer to STEP 1, Fig 25–3. Note HOOK that the brushes wear differently on each side of the motor, so check them both. Brush Repair Kit BRUSH 220–853 is available.

  • Page 26: Power Supply Cord Replacement

    POWER SUPPLY CORD REPLACEMENT WARNING 5. Reinstall the cover. Pressure Before doing this procedure, follow the Relief Procedure W arning on page 24 to reduce the risk of a fluid injection injury , splashing in the eyes or on the skin, injury from moving parts, or electric shock.

  • Page 27: Bridge Rectifier Replacement

    BRIDGE RECTIFIER REPLACEMENT WARNING 5. Install the front screw (331), lockwasher (333) and nut (332). Make sure the bridge is flush with the side Pressure Before doing this procedure, follow the of the box and tighten the screws securely. Relief Procedure W arning on page 24 to reduce the risk of a fluid injection injury , splashing in the eyes or on the skin, injury from moving parts, or CAUTION...

  • Page 28: Circuit Board Replacement

    CIRCUIT BOARD REPLACEMENT WARNING 6. Reconnect all wires. Refer to the wiring diagram in Fig 28–2. Ease the pin (330) into the retainer. Before doing this procedure, follow the Pressure Relief Procedure W arning on page 24 to reduce the risk of a fluid injection injury , splashing in the PRESSURE eyes or on the skin, injury from moving parts, or CONTROL KNOB...

  • Page 29: Pressure Control Replacement

    PRESSURE CONTROL REPLACEMENT WARNING 6. Remove the conduit (1). Pressure Before doing this procedure, follow the 7. Remove the three screws (8) and lockwashers (10) Relief Procedure W arning on page 24 to reduce and nuts (11) located below the pressure control. Re- the risk of a fluid injection injury , splashing in the move the pressure control.

  • Page 30: Pressure Control Adjustment

    PRESSURE CONTROL ADJUSTMENT WARNING USE EXTREME CAUTION WHEN PERFORMING THIS ADJUSTMENT PROCEDURE to reduce the risk of a fluid injection injury or other serious bodily injury which can result from component rupture, electric shock, fire, explosion, or moving parts. This procedure sets the sprayer to3000 psi (210 bar) NEVER try to increase the sprayer’s maximum work- MAXIMUM WORKING PRESSURE and sets the ing pressure of 3000 psi (210 bar ) by performing...
  • Page 31 PRESSURE CONTROL ADJUSTMENT Maximum Working Pressure Adjustment 17. Turn the pressure control knob to the minimum set- ting. Release the gun safety latch and trigger the gun 13. Turn the sprayer OFF . Disengage the gun safety into a grounded waste container until pressure is re- latch.

  • Page 32: Bearing Housing & Connecting Rod Replacement

    BEARING HOUSING & CONNECTING ROD REPLACEMENT WARNING 8. Assemble the connecting rod (68) and bearing hous- ing (69). Before doing this procedure, follow the Pressure Relief Procedure Warning on page 24 to reduce 9. Clean the mating surfaces of the bearing and drive the risk of a fluid injection injury , splashing in the housings.

  • Page 33: Drive Housing Replacement

    DRIVE HOUSING REPLACEMENT WARNING CAUTION DO NOT allow the gear cluster (51) to fall when re- Before doing this procedure, follow the Pressure moving the drive housing (67). It is easily damaged Relief Procedure Warning on page 24 to reduce if dropped.

  • Page 34: Motor Replacement

    MOTOR REPLACEMENT WARNING CAUTION Before doing this procedure, follow the Pressure DO NOT allow the gear cluster (51) to fall when re- Relief Procedure Warning on page 24 to reduce moving the drive housing (67). It is easily damaged the risk of a fluid injection injury , splashing in the if dropped.
  • Page 35 WIRING DIAGRAM DETAIL Shows position of conduit seal (29) in BLUE conduit connector (345) WHITE YELLOW BLACK MOTOR BLACK WHITE LEADS MOTOR GREEN GROUND WIRE THERMAL SWITCH POWER SUPPLY CORD 36,63 SEE DETAIL ABOVE Fig 35–1 307–786...

  • Page 36: Displacement Pump Repair

    NOTE: Whenever you disassemble the pump for clean- good. ing or repair, remove the sleeve. A special sleeve removal tool is available. Order Graco Part No. 222–586. Do not use any other type of tool. WARNING Always use the special...
  • Page 37 DISPLACEMENT PUMP REPAIR 3. Tighten the packing retaining nut (211) onto the pis- 10. Coat the piston rod and packings with oil. Carefully ton valve (222) to 19 ft –lb (27 N.m). slide the assembly INT O THE T OP OF THE SLEEVE.
  • Page 38 BOTTOM OF THE CYLINDER . This is to prevent leakage, but no tighter. Fill the wet–cup/packing nut packing damage during reassembly . Refer to Fig 1/3 full with Graco TSL. 38–1. 13. Screw down the cylinder locknut (47) until it is finger tight at the bottom of the external cylinder threads.

  • Page 39: Parts Drawings & Lists Displacement Pump

    PARTS DRAWING & LIST – DISPLACEMENT PUMP Model 222–580, Series A Sleeved Displacement Pump Includes items 202 to 225 NO. PART NO. DESCRIPTION 110–165* PACKING, o–ring, PTFE 107–093* SEAL, u–cup, polyurethane 105–445* BALL; sst 179–810 PLUG 1 178–939* V–PACKING, leather 178–940* V–PACKING, leather 178–942*...
  • Page 40 PARTS DRAWING – UPRIGHT SPRAYER Ultra 750 Sprayers with Upright Cart IDENTIFICATION LABEL Model 231–033, Series C Includes items 1–90 Basic Sprayer WARNING LABEL Model 231–042, Series B IDENTIFICATION Includes items 1 – 90, 100 – 102 Complete Sprayer WARNING LABEL...

  • Page 41: Displacement Pump

    PARTS LIST – UPRIGHT SPRAYER Ultra 750 Sprayers with Upright Cart Model 231–033, Series C Model 231–042, Series B Includes items 1–90 Includes items 1 – 90, 100 – 102 Basic Sprayer Complete Sprayer NO. PART NO. DESCRIPTION NO. PART NO.
  • Page 42 PARTS DRAWING – LO-BOY SPRAYER Ultra 750 Sprayer with Lo-Boy Cart Model 221–120, Series C Includes items 1 to 99 ID LABEL Model 221–130, Series B ID LABEL Includes items 1 to 102 WARNING LABEL WARNING LABEL ID LABEL WARNING...
  • Page 43 PARTS LIST – LO-BOY SPRAYER Ultra 750 Sprayers with Lo-Boy Cart Model 221–120, Series C Model 221–130, Series B Includes items 1–99 Includes items 1 – 102 Basic Sprayer with Lo-Boy Cart Complete Sprayer with Lo-Boy Cart NO. PART NO.
  • Page 44 PARTS DRAWING & LIST – PRESSURE CONTROL PRESSURE CONTROL ASSEMBLY 220–455 Includes all items listed below, except the terminals. Part numbers for items 17, 27, 29, 52, 71, 73a, 73b and 73c are shown in the drawings below and on page 45 are The terminals are included with the circuit board (item given on page 41 and 43.

  • Page 45: Wiring Diagram

    WIRING DIAGRAM CIRCUIT BOARD 218–405 BLUE WHITE (73c) YELLOW BLACK Ref 27,52 73a 323 BLACK WHITE MOTOR GREEN GROUND WIRE THERMAL SWITCH POWER SUPPLY CORD 307–786...

  • Page 46: Accessories

    ACCESSORIES SUCTION TUBE KIT 208–259 SUCTION TUBE KIT 208–920 55 gallon (200 liter) size 5 gallon (19 liter) size Includes: Includes: NO. PART NO. DESCRIPTION NO. PART NO. DESCRIPTION 156–589 UNION 101–818 CLAMP, 214–961 HOSE, 3/4 ID; nylon; 6 ft 160–327 UNION, 90 156–591...

  • Page 47: Technical Data

    ....1/4 npsm from fluid filter TO PLACE AN ORDER , contact your Graco distributor, or call Wetted Parts: Graco, 7:00 a.m. to 6:00 p.m. Central Time: Displacement Pump .

  • Page 48: The Graco Warranty And Disclaimers

    Graco distributor to the original purchaser for use. As purchaser’s sole remedy for breach of this warranty, Graco will, for a period of twelve months from the date of sale, repair or replace any part of the equipment proven defective, with the exception of defects in parts on the drive train/gear box on EM and GM sprayers or power train on EH &...

Table of Contents