Graco A Series Instructions-Parts List Manual
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Graco A Series Instructions-Parts List Manual

120 v ac, 15 amp 3000 psi (210 bar) maximum working pressure
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INSTRUCTIONS-PARTS LIST
120 V AC, 15 AMP
ABATEMENT TECHNOLOGIES
LoPro 1000 SPRAYER
3000 psi (210 bar) MAXIMUM WORKING PRESSURE
Model 231–094, Series A
U.S. Patent No. 4,323,741, 4,397,610
Patented 1983, Canada
And Other Patents Pending
NOTE: This is an example of the DANGER label on your sprayer.
This label is available in other languages, free of charge.
See page 43 to order.
Spray painting, flushing or cleaning equipment with flammable liq-
uids in confined areas can result in fire or explosion.
Use outdoors or in extremely well ventilated areas. Ground equip-
ment, hoses, containers and objects being sprayed.
Avoid all ignition sources such as static electricity from plastic drop
cloths, open flames such as pilot lights, hot objects such as ciga-
rettes, arcs from connecting or disconnecting power cords or turn-
ing light switches on and off.
Failure to follow this warning can result in death or serious injury.
READ AND UNDERSTAND ALL LABELS AND INSTRUCTION MANUALS BEFORE USE
GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440–1441
This manual contains IMPORTANT
INSTRUCTIONS and WARNINGS.
READ AND RETAIN FOR REFERENCE.
FIRE AND
EXPLOSION HAZARD
COPYRIGHT 1989, GRACO INC.
Liquids can be injected into the body by high pressure airless spray
or leaks – especially hose leaks.
Keep body clear of the nozzle. Never stop leaks with any part of the
body. Drain all pressure before removing parts.Avoid accidental trig-
gering of gun by always setting safety latch when not spraying.
Never spray without a tip guard.
In case of accidental skin injection, seek immediate
"Surgical Treatment".
Failure to follow this warning can result in amputation or serious
injury.
307–958
Rev D
Supersedes C and PCN D
SKIN INJECTION
HAZARD

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  • Page 1 Failure to follow this warning can result in death or serious injury. Failure to follow this warning can result in amputation or serious injury. READ AND UNDERSTAND ALL LABELS AND INSTRUCTION MANUALS BEFORE USE GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440–1441 COPYRIGHT 1989, GRACO INC.

  • Page 2: Table Of Contents

    The pump has a wet–cup which, when filled with sensing device and a current overload circuit breaker Graco Throat Seal Liquid, helps prevent damage to the with a manual reset button. The function of the pressure throat packings and piston rod.
  • Page 3 TRIGGER SAFETY SHOWN ENGAGED MOTOR RESET BUTTON ON/OFF SWITCH PRESSURE ADJUSTING KNOB DRIVE ASSEMBLY FLUID FILTER PRESSURE CONTROL PRESSURE DRAIN VALVE DISPLACEMENT PUMP FLEX GUN WITH RAC IV DRIPLESS TIP GUARD AND SWITCHTIP MAIN HOSE 6 ft (1.8 m) HOSE Fig 3–1 307–958...
  • Page 4 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 Whenever you stop spraying, even for a moment, always set the gun, leaks or ruptured components can inject fluid through the 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 Dispositifs de sécurité...
  • 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 Ce pulvérisateur peut produire une PRESSION MAXIMUM DE accessoires comme, par exemple, la mise sous une pression TRAVAIL 210 bar (3000 lb/po2). S’assurer que tous les excessive, les modifications de pièces, l’utilisation de produits éléments du pulvérisateur et ses accessoires sont conçus pour chimiques et de matières incompatibles et l’utilisation de pièces...

  • 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 sobrepresurización, modificación de piezás, uso 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

    Don’t use thread sealant, and don’t install the spray tip yet! 3. Fill Packing Nut/Wet–Cup. See Fig 10–1 Fill the packing nut/wet–cup 1/3 full with Graco Throat Seal Liquid (TSL), supplied. WARNING If you are supplying your own hoses and spray gun, 4.
  • Page 11 SETUP 5. Plug in the Sprayer . Be sure the ON/OFF switch 6. Flush the pump to remove the lightweight oil which is OFF. Then plug the cord into a grounded electrical was left in to protect pump parts after factory testing. outlet at least 20 ft.

  • Page 12: Operation

    OPERATION WARNING CAUTION Pressure Relief Procedure If the pump runs without fluid in it for more than 30 To reduce the risk of serious bodily injury, including seconds, the displacement pump packings will be fluid injection, splashing fluid or solvent in the eyes damaged.
  • Page 13 OPERATION PRESSURE ADJUSTING KNOB ON/OFF ROTATE CLOCKWISE TO IN- CREASE PRESSURE SWITCH FLUID FILTER SECONDARY OUTLET CAP SUCTION TUBE PRESSURE DRAIN VALVE Fig 13–1 Cleaning a Clogged Tip WARNING 4. Return the handle to the original position, disengage the gun safety latch, and resume spraying. To reduce the risk of serious bodily injury from from fluid injection;...

  • Page 14: Shutdown & 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 12 before checking, adjusting, cleaning and shutting down the sprayer.

  • Page 15: Flushing Guidelines

    FLUSHING GUIDELINES When to Flush 3. Close the pressure drain valve. 4. Put the suction tube in a grounded metal pail of com- 1. New Sprayer. Your new sprayer was factory tested patible solvent. in lightweight oil which was left in to protect pump parts.

  • 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 the next check. If check is not OK, refer to this column. Diagnosing circuit board in– Check leads from bridge (308) to motor to Replace loose terminals;...
  • Page 18 MOTOR WON’T OPERATE TYPE OF PROBLEM WHAT TO CHECK WHAT TO DO If check is OK, go to the next check. If check is not OK, refer to this column. Condition B (continued) Check microswitch (302).Reconnect TP6 Clean microswitch male terminals. Re- connectors.

  • Page 19: Low Output

    LOW OUTPUT TYPE OF PROBLEM WHAT TO CHECK WHAT TO DO If check is OK, go to the next check. If check is not OK, refer to this column. Follow Pressure Relief Procedure Check for worn spray tip. Warning then replace tip. See your separate gun or tip manual.

  • Page 20: No Output

    NO OUTPUT TYPE OF PROBLEM WHAT TO CHECK WHAT TO DO If check is OK, go to the next check. If check is not OK, refer to this column. Motor runs and pump strokes Checkmaterial supply. Refill and reprime pump. Check for clogged intake strainer.

  • Page 21: Motor Is Hot And Runs Intermittently

    MOTOR IS HOT & RUNS INTERMITTENTLY TYPE OF PROBLEM WHAT TO CHECK WHAT TO DO If check is OK, go to the next check. If check is not OK, refer to this column. 1. Check to see if sprayer has been operating 1.

  • Page 22: Spin Test

    SPIN TEST WARNING Pressure Relief Procedure To reduce the risk of serious bodily injury , including 5. Engage the gun safety latch. fluid injection, injury from splashing fluid or solvent in the eyes or on the skin, moving parts or electric shock, 6.

  • Page 23: Bridge Test

    BRIDGE TEST BRIDGE WIRES Remove the bridge from the pressure control box and perform this test to determine if the bridge is functional. See BRIDGE RECTIFIER REPLACEMENT , page 27. – Use a continuity tester, such as multi–meter set on the X1 ohms scale.
  • Page 24 GENERAL REPAIR NOTES WARNING CAUTION Pressure Relief Procedure To reduce the risk of a pressure control malfunction, To reduce the risk of serious bodily injury, including be sure to properly mate connectors, and never pull fluid injection, injury from splashing fluid or solvent on a wire to disconnect it.

  • Page 25: Motor Brush Replacement

    MOTOR BRUSH REPLACEMENT NOTE: Replace the brushes when they have worn to SPRING less than 1/2 in. See STEP 1, Fig 25–3. Note that HOOK 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 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 Before doing this procedure, follow the Pressure of the pressure control and tighten the screws se- Relief Procedure W arning on page 24 to reduce curely.

  • 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. 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 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 (21). Before doing this procedure, follow the Pressure 7. Remove the screws (27), lockwashers (44) and nuts Relief Procedure W arning on page 24 to reduce (45) located below the pressure control. the risk of a fluid injection injury , splashing in the eyes or on the skin, injury from moving parts, or 8.

  • 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: Motor Replacement

    MOTOR REPLACEMENT WARNING two screws (58) and washers (57) from the upper rear of the motor front end bell (P). Before doing this procedure, follow the Pressure Relief Procedure Warning on page 24 to reduce 12. Use a plastic mallet to gently tap the displacement the risk of a fluid injection injury , splashing in the pump (42) from the rear to loosen the drive housing eyes or in the skin, injury from moving parts or elec-...
  • Page 33 WIRING DIAGRAM DETAIL Shows position of conduit seal (78) in conduit connector (345) BLUE WHITE YELLOW BLACK MOTOR LEADS BLACK WHITE MOTOR GREEN GROUND WIRE THERMAL SWITCH POWER SUPPLY CORD CONNECTING ASSEMBLY 345,78 Fig 33–1 307–958...

  • Page 34: Bearing Housing & Connecting Rod Replacement

    BEARING HOUSING & CONNECTING ROD REPLACEMENT WARNING 7. Assemble the connecting rod (60) and bearing hous- ing (62). Before doing this procedure, follow the Pressure Relief Procedure Warning on page 24 to reduce 8. Clean the mating surfaces of the bearing and drive the risk of a fluid injection injury , splashing in the housings.

  • Page 35: Drive Housing Replacement

    DRIVE HOUSING REPLACEMENT WARNING 6. Lightly tap the drive housing (59) with a plastic mallet to loosen it from the front end bell, then pull it straight Before doing this procedure, follow the Pressure off. Relief Procedure Warning on page 24 to reduce the risk of a fluid injection injury , splashing in the CAUTION eyes or in the skin, injury from moving parts or elec-...

  • Page 36: Displacement Pump Repair

    4. Tighten the packing nut (221) just enough to stop the bearing housing (62). leakage, but no tighter. Fill the wet–cup/packing nut 1/3 full with Graco TSL. 6. Go to Disassembling the Pump on the bottom right side of this page.
  • Page 37 Fill the wet–cup/packing nut 1/3 packing damage when inserting the piston rod. full with Graco TSL. 1. Check the outside of the piston rod (223) and the in- 14. See Reinstalling the Pump, on page 36.
  • Page 38 PARTS DRAWING – SPRAYER LoPro 1000 Sprayer LABEL Model 231–094, Series A LABEL DANGER LABEL LABEL LABEL REF 30 REF 32 LABEL, outside LABEL, inside REF 15 PRESSURE CONTROL SEE PARTS LIST ON PAGE 40. REF 32 REF 42 DISPLACEMENT PUMP SEE PAGE 42 FOR PARTS 307–958...
  • Page 39 PARTS LIST Model 231–094, Series A NO. PART NO. DESCRIPTION Includes items 1 to 96 105–510 LOCKWASHER, spring, 1/4” 100–644 SCREW, socket head, NO. PART NO. DESCRIPTION no. 1/4–20 x 0.62” 223–098 DRIVE HOUSING KIT Includes items 59a and 59b and one of 68 221–621 SPRAY TIP, .021 size...
  • Page 40 PARTS – PRESSURE CONTROL PRESSURE CONTROL ASSEMBLY 220–455 The terminals are included with the circuit board (item Part numbers for items 27, 56a, 56b, 57, 74 and 78 are 74). The terminals listed in this parts list are shown on the shown in the drawings below and on page 41 and are wiring diagram on page 41.

  • Page 41: Wiring Diagram

    WIRING DIAGRAM BLUE 321 (58c) WHITE YELLOW BLACK Ref 329, 330 BLACK WHITE MOTOR GREEN GROUND WIRE THERMAL SWITCH POWER SUPPLY CORD SERVICE INFORMATION Listed below by the assembly changed are OLD, NEW, ADDED and DELETED parts. Old and new parts are di- rectly interchangeable.

  • Page 42: Displacement Pump

    PARTS DRAWING PARTS LIST Model 222–341, Series A NO. PART NO. DESCRIPTION Displacement Pump Includes items 201 to 224 179–810 PLUG 105–444* BALL, SST 105–445* BALL, sst 108–706* SEAL, u–cup, PTFE 150–429* GASKET, copper 178–938* PIN, ball stop NOTE: See the repair instructions on pages 36–37 178–942* GLAND, male, carbon steel...

  • Page 43: Technical Data

    ........Plated steel placement of these labels for good visibility. Order the labels directly from Graco, free of PTFE charge.
  • Page 44 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, which will be repaired or replaced for twenty–four months from the date of sale and...

This manual is also suitable for:

Lopro 1000231-094

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