Graco 395 Repair Manual
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Graco 395 Repair Manual

Graco 395 Repair Manual

Airless sprayers
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Repair
395/495/595t Airless Sprayers
3300 psi (227 bar, 22.7 MPa) Maximum Working Pressure
Vac
395
233960
495
233966
120
595
240 CEE 7/7
395
233955
Hopper
395
234176
495
233956
595
395
233963
495
233957
240 Europe
595
395
233972
495
233973
110 UK
595
395
234180
495
234183
240 Asia
595
100 Asia
495
234186
All models not available in all countries.
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GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440-1441
Copyright 2002, Graco Inc. is registered to I.S. EN ISO 9001
233961
233962
233967
233968
234490
234435
233970
233971
234437
234178
234438
233975
234436
234181
234182
234439
233974

Table of Contents

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309706, 309707
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Rev. C
233960
ti2399
. . . . . . .
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309055
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Summary of Contents for Graco 395

  • Page 1: Table Of Contents

    ......GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440-1441 Copyright 2002, Graco Inc. is registered to I.S. EN ISO 9001...
  • Page 2 WARNING ADVERTÊNCIA Poderá ocorrer incêndio e explosão quando for pulverizado ou injetado Fire and explosion hazard: Solvent and paint fumes can ignite or líquido inflamável numa área onde houver má circulação de ar; vapores explode. inflamáveis poderão incendiar-se a partir de uma chama ou fagulhas a To help prevent a fire and explosion: descoberto.

  • Page 3: Component Function And Identification

    Component Identification and Function ti2377a ti2399 Fig. 1 Motor DC motor, permanent magnet, totally enclosed, fan cooled Drive Assembly Transfers power from DC motor to displacement pump Displacement Pump Transfers fluid to be sprayed from source through spray gun Fluid Outlet Spray gun is connected here Prime Valve Used to prime and drain sprayer (also relieves fluid outlet pressure) when open...

  • Page 4: General Repair Information

    General Repair Information Pressure Relief Procedure 1. Keep all screws, nuts, washers, gaskets, and electrical fittings removed during repair proce- dures. These parts are not normally provided with WARNING replacement assemblies. INJECTION HAZARD WARNING System pressure must be manually relieved to prevent system from starting ELECTRIC SHOCK HAZARD or spraying accidentally.

  • Page 5: Grounding

    Grounding WARNING Grounded Grounding Plug Outlets Improper installation or alteration of grounding plug results in risk of electric shock, fire or explosion that could cause serious injury or death. 1. 220–240 Vac models require a 50 Hz, 10A circuit with a grounding receptacle. 100–120 Vac models 240 Vac model shown require a 50/60 Hz, 15A circuit with a grounding Fig.
  • Page 6 Troubleshooting 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 Basic Electrical Problems 1. That motor leads are securely fastened and 1.
  • Page 7 Troubleshooting LOW OR FLUCTUATING OUTPUT WHAT TO CHECK WHAT TO DO TYPE OF PROBLEM If check is OK, go to next check When check is not OK refer to this column Low Output 1. For worn spray tip. 1. Follow Pressure Relief Procedure Warn- ing, then replace tip.
  • Page 8 Troubleshooting LOW OR FLUCTUATING 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. Paint supply. 1. Refill and reprime pump. 2.
  • Page 9 Troubleshooting MOTOR IS HOT AND RUNS INTERMITTENTLY WHAT TO CHECK WHAT TO DO TYPE OF PROBLEM 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 10: Spin Test

    Fig. 3 shorted. Replace motor; page 20. Motor Brush Replacement 395/495 Motor Brush Removal Replace brushes worn to less than 1/2 in. Brushes wear differently on each side of motor, check both sides. Brush Repair Kit 287016 is available. Spring clip, 112766, may be purchased separately.
  • Page 11 CAUTION shop if brushes wear too fast. Do not run sprayer dry for more than 30 seconds while checking brushes to avoid damaging displace- 395/495 Motor Brush Installation ment pump packings. 6. Install brush inspection covers and gaskets. CAUTION 7. Break in brushes.
  • Page 12 595 Motor Brush Installation Relieve pressure; page 4. CAUTION 3. Fig. 7. Remove motor shroud (23) and two inspec- When installing brushes, follow all steps carefully to tion covers (A). avoid damaging parts. 1. Fig. 9. Install new brush (F) with lead into brush holder (C).

  • Page 13: On/Off Switch Replacement

    On/Off Switch Replacement 100, 120 Vac (See page 1 for models) Removal Installation 1. Install new ON/OFF switch (58). Install locking ring Relieve pressure; page 4. and toggle boot (30). 2. Fig. 10. Remove four screws (12) and pressure control cover (50). 2.
  • Page 14 On/Off Switch Replacement 110, 240 Vac (See page 1 for models) Removal Installation 1. Install new ON/OFF switch (58). Install locking ring Relieve pressure; page 4. and toggle boot (30). 2. Fig. 11. Remove four screws (12) and pressure 2. Connect four wires (A) to ON/OFF switch (58). control cover (50).
  • Page 15 CAUTION Heat from inductor coil of filter board may destroy wire insulation that comes in contact with it. Exposed wires could cause shorts and component damage. Bundle and tie all loose wires so none lay in contact with ti2478a inductor coil of filter board. Black ON/OFF Switch...

  • Page 16: Pressure Control Repair

    Pressure Control Repair Motor Control Board Removal Installation 1. Clean pad on rear of motor control board. Apply Refer to Fig. 10 or 11 depending on sprayer voltage. small amount of thermal compound 073019 to pad. 2. Fig. 10. Install motor control board (49) with six screws (6).
  • Page 17 Pressure Control Repair Digital Display Messages No display does not mean that sprayer is not pressurized. Relieve pressure before repair; page 4. DISPLAY SPRAYER OPERATION INDICATION ACTION No Display Sprayer stops. Power is not ap- Loss of power Check power source. Relieve pres- sure before repair or disassembly.
  • Page 18 Pressure Control Repair Stored Data (Not available on all sprayers) The SmartControl contains stored data to assist with troubleshooting and maintenance. To view this stored data on the digital display, proceed as follows: 4. Release display button about 1 second after turning on sprayer.

  • Page 19: Drive Housing Replacement

    Drive Housing Replacement 5. Remove two screws (12) and cover (22). CAUTION 6. Remove four front screws (47). Do not drop gear cluster (44) and (40) when remov- ing drive housing (42). Gear cluster may stay en- 7. Pull drive housing (42) off of motor (54). gaged in motor front end bell or drive housing.

  • Page 20: Motor Replacement

    Motor Replacement Disassembly 7. Remove two screws (47) and control housing (48). 8. Remove two screws (47) and manifold (15). Relieve pressure; page 4. 9. Remove four screws (47) and motor (54) from frame (59). 2. Remove pump (13); Displacement Pump Re- Assembly placement, page 21.

  • Page 21: Displacement Pump Replacement

    1. Fig. 16. Extend pump piston rod fully. Apply grease to top of pump rod at (A) or inside connecting rod. ti2568a Fig. 17 7. Fig. 18. Fill packing nut with Graco TSL until fluid flows onto top of seal. ti2568a ti2615a Fig.

  • Page 22: Technical Data

    Handle up Graco Phone Number TO PLACE AN ORDER OR FOR SERVICE, 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.

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