Graco 1095, 1595, 695, 795 User Manual

Repair

Ultimater Mx II 695/795/1095/1595t Airless Sprayers

3300 psi (227 bar, 22.7 MPa) Maximum Working Pressure

Standard/

Vac Model

695 Standard 826048 826047

120 795 Standard 826049

North America Premium 826042

1095 Standard 826050

1595 Standard 826054

* Not ETL Approved

Premium

Premium 826041 826040

Premium 826044

826051*

Premium 826053

826045*

309942 Rev. F

ti4281a

GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440–1441

Graco Inc. is registered to I.S. EN ISO 9001

826042

Table of Contents

Component Function and Identification 4. . . . .

General Repair Information 5. . . . . . . . . . . . . . .

Grounding 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Troubleshooting 6. . . . . . . . . . . . . . . . . . . . . . . . .

Mechanical/Fluid Flow 6. . . . . . . . . . . . . . . .

Electrical 7. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Pressure Control Repair 10. . . . . . . . . . . . . . . .

Drive and Bearing Housing Replacement 12. .

Motor Replacement 14. . . . . . . . . . . . . . . . . . . . .

Displacement Pump Replacement 16. . . . . . . .

3-D Wiring Diagram 17. . . . . . . . . . . . . . . . . . . .

Technical Data 18. . . . . . . . . . . . . . . . . . . . . . . . .

Dimensions 18. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Graco Phone Number 18. . . . . . . . . . . . . . . . . . .

2 309942

WARNING

FIRE AND EXPLOSION HAZARD

Flammable fumes, such as solvent and paint fumes, in work area can ignite or explode. To help prevent fire and explosion:

D Use equipment only in well ventilated area.

D Eliminate all ignition sources; such as pilot lights, cigarettes, portable electric lamps, and plastic

drop cloths (potential static arc).

D Keep work area free of debris, including solvent, rags and gasoline.

D Do not plug or unplug power cords or turn lights on or off when flammable fumes are present.

D Ground equipment and conductive objects in work area. See Grounding instructions.

D Use only conductive hoses.

D Hold gun firmly to side of grounded pail when triggering into pail.

D If there is static sparking or you feel a shock, stop operation immediately. Do not use equipment

until you identify and correct the problem.

SKIN INJECTION HAZARD

High–pressure fluid from gun, hose leaks, or ruptured components will pierce skin. This may look like just a cut, but it is a serious injury that can result in amputation. Get immediate surgical treatment.

D Do not point the gun at anyone or at any part of the body.

D Do not put your hand over the spray tip.

D Do not stop or deflect leaks with your hand, body, glove or rag.

D Do not spray without tip guard and trigger guard installed.

D Engage trigger lock when not spraying.

D Follow the Pressure Relief Procedure on page 5 if the spray tip clogs and before cleaning,

checking or servicing the equipment.

ELECTRIC SHOCK HARZARD

Improper grounding, setup or usage of the system can cause electric shock.

D Turn off and disconnect power cord before servicing equipment.

D Use only grounded electrical outlets.

D Use only 3-wire extension cords.

D Ensure ground prongs are intact on sprayer and extension cords.

PERSONAL PROTECTIVE EQUIPMENT

You must wear appropriate protective equipment when operating, servicing, or when in the operating area of the equipment to help protect you from serious injury, including eye injury, inhalation of toxic fumes, burns, and hearing loss. This equipment includes but is not limited to:

D Protective eyewear

D Clothing and respirator as recommended by the fluid and solvent manufacturer

D Gloves

D Hearing protection

PRESSURIZED ALUMINUM PARTS HAZARD

Do not use 1,1,1–trichloroethane, methylene chloride, other halogenated hydrocarbon solvents or fluids containing such solvents in pressurized aluminum equipment. Such use can cause serious chemical reaction and equipment rupture, and result in death, serious injury, and property damage.

3309942

Component Identification and Function

Fig. 1

ti2377a

ti4281a

A Motor DC motor, permanent magnet, totally enclosed, fan cooled

B Drive Assembly Transfers power from DC motor to displacement pump

D Displacement Pump Transfers fluid to be sprayed from source through spray gun

E Fluid Outlet Spray gun is connected here

F Prime Valve Used to prime and drain sprayer (also relieves fluid outlet pressure) when open

G Fluid Filter Final filter of fluid to spray gun

H Pressure Adjusting Knob Controls fluid outlet pressure

J Pressure Control Controls motor speed to maintain fluid outlet pressure at displacement pump

outlet. Works with pressure adjusting knob.

K ON/OFF Switch Power switch that controls main power to sprayer

M 50 ft (15 m) Main Hose 1/4 in. ID, grounded, nylon hose with spring guards on both ends

N Spray Gun High pressure spray gun with gun safety latch

P Spray Tip Uses high pressure fluid to clear tip clogs without removing tip from spray gun

R HandTitet Tip Guard Tip guard reduces risk of injection injury

S Gun Safety Latch Gun safety latch inhibits accidental triggering of spray gun. Contractor II gun

shown. Refer to your gun manual to properly set your gun safety latch.

T Hose Rack Holds wrapped hose for storage

U Suction Tube Transfers fluid to be sprayed from source to pump

V Drain Tube Fluid outlet used to drain and prime the sprayer

W AutoClean Reverse flush system

4 309942

General Repair Information

Pressure Relief Procedure

WARNING

INJECTION HAZARD

System pressure must be manually relieved to prevent system from starting

or spraying accidentally. Fluid under high pressure can be injected through skin and cause serious injury. To reduce risk of injury from injection, splashing fluid, or moving parts, follow Pres- sure Relief Procedure whenever you:

D are instructed to relieve pressure, D stop spraying, D check or service any system equipment, D or install or clean spray tip.

CAUTION

To reduce risk of pressure control malfunction:

D Use needle nose pliers to disconnect wire. Never

pull on wire, pull on connector.

D Mate wire connectors properly. Center flat blade of

insulated male connector in female connector.

D Route wires carefully to avoid interference with

other connections of pressure control. Do not pinch wires between cover and control box.

1. Keep all screws, nuts, washers, gaskets, and electrical fittings removed during repair procedures. These parts are not normally provided with replacement assemblies.

WARNING

1. Turn pressure to zero.

2. Turn ON/OFF switch to OFF.

3. Unplug power supply cord.

4. Hold metal part of gun firmly to grounded metal pail. Trigger gun to relieve pressure.

5. Lock gun safety latch.

6. Open prime valve. Leave prime valve open until ready to spray again.

If suspected that spray tip or hose is completely clogged, or that pressure has not been fully relieved after following steps above, VERY SLOWLY loosen tip

guard retaining nut or hose end coupling to relieve pressure gradually, then loosen completely. Now clear tip or hose obstruction.

Grounding

WARNING

ELECTRIC SHOCK HAZARD MOVING PARTS HAZARD HOT SURFACE HAZARD

To reduce risk of serious injury, including electric shock, do not touch moving or electrical parts with fingers or tools while testing repair. Shut off and unplug sprayer when inspection is complete. Install all covers, guards, gaskets, screws, washers and shroud before operating sprayer.

2. Test repair after problem is corrected.

3. If sprayer does not operate properly, review repair procedure to verify procedure was done correctly. If necessary, see Troubleshooting, pages 6 – 9, for other possible solutions.

Improper installation or alteration of grounding plug results in risk of electric shock, fire or explosion that could cause serious injury or death.

1. Ultimate Mx II 695, 795 and 1095 100–120 Vac models require a 50/60 Hz, 15A circuit with a grounding receptacle. Ultimate Mx II 1595 120 Vac models require a 50/60 Hz 20A circuit with a grounding receptacle; 220–240 Vac models require a 50/60 Hz, 10A circuit with a grounding receptacle. See Fig. 2.

2. Do not alter ground prong or use adapter.

Grounding Plug

Fig. 2

3. 120 Vac: A 12 AWG, 3 wires with grounding prong, 300 ft (90 m) extension cord may be used. 220–240 Vac: You may use a 3-wire, 1.0 mm (12 AWG) (minimum) extension cord up to 90 m long. Long lengths reduce sprayer performance.

Grounded Outlets

5309942

Relieve pressure; page 5.

Mechanical/Fluid Flow

Troubleshooting

TYPE OF PROBLEM

Low Output or Pressure 1. For worn spray tip. 1. Follow Pressure Relief Procedure Warn-

WHAT TO CHECK

If check is OK, go to next check

2. Spray tip clogged. 2. Relieve pressure. Check and clean spray

3. Paint supply. 3. Refill and reprime pump.

4. Intake strainer clogged. 4. Remove and clean, then reinstall.

5. To see if intake valve ball and piston ball are seating properly.

6. Suction hose connections. 6. Tighten any loose connections. Check for

7. Filter clogged. 7. Relieve pressure. Check and clean filter.

8. Prime valve leaking. 8. Relieve pressure. Repair prime valve.

9. Verify pump does not continue to stroke when gun trigger is released. (Prime valve not leaking.)

10. Leaking around throat packing nut which may indicate worn or damaged packings. See page

16.

WHAT TO DO

When check is not OK refer to this column

ing, then replace tip. See your separate gun or tip manual.

tip.

5. Remove intake valve and clean. Check balls and seats for nicks; replace if necessary, page 16. Strain paint before using to remove particles that could clog pump.

missing or damaged seals.

9. Service pump. See page 16.

10.Replace packings, page 16. Also check piston valve seat for hardened paint or nicks and replace if necessary. Tighten packing nut/wet-cup.

Motor runs but pump does not stroke

11. Pump rod damage. 11. Repair pump, page 16.

12.Low stall pressure. 12. Do either or both: a. Turn pressure control knob fully

clockwise. Make sure pressure control knob is properly installed to allow full clockwise position.

b. Try a new pressure transducer.

1. Displacement pump pin (32) (damaged or miss-

ing), page 16.

2. Connecting rod assembly (43) for damage,

page 12.

3. Gears or drive housing, page 12. 3. Inspect drive housing assembly and gears

1. Replace pump pin if missing. Be sure retainer spring (31) is fully in groove all around connecting rod, page 16.

2. Replace connecting rod assembly, page 12.

for damage and replace if necessary, page 12.

6 309942

+ 12 hidden pages