Graco 311825F User Manual

Instructions - Parts

™

Dura-Flo

Carbon Steel or Stainless Steel Lowers, with Severe-Duty Rod and Cylinder.

Dura-Flo 1800 (430 cc) Lowers Dura-Flo 2400 (580 cc) Lowers

Important Safety Instructions

Read all warnings and instructions in this manual. Save these instructions.

See page 3 for model information, including maximum working pressure.

Lowers

311825F

ENG

TI8341a

Contents

Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Pressure Relief Procedure . . . . . . . . . . . . . . . . . 6

Required Tools . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Reassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Dura-Flo 1800 (430 cc) Lowers . . . . . . . . . . . . . 12

Dura-Flo 2400 (580 cc) Lowers . . . . . . . . . . . . . 14

Repair Kits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

UHMWPE and PTFE Packings . . . . . . . . . . . . . 16

PTFE and Leather Packings . . . . . . . . . . . . . . . 17

PTFE Packings . . . . . . . . . . . . . . . . . . . . . . . . . 18

UHMWPE and Leather Packings . . . . . . . . . . . 19

Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Graco Standard Warranty . . . . . . . . . . . . . . . . . . . 22

Graco Information . . . . . . . . . . . . . . . . . . . . . . . . . 22

2 311825F

Models

Lower Part

No. and

Series Description Packings

222796, A Dura-Flo 1800 (430 cc) carbon steel 3 PTFE/2 leather 31 MPa (310 bar, 4500 psi)

222988, A Dura-Flo 1800 (430 cc) carbon steel 5 PTFE 31 MPa (310 bar, 4500 psi)

222805, A Dura-Flo 1800 (430 cc) stainless steel 3 UHMWPE/2 PTFE 31 MPa (310 bar, 4500 psi)

241956, A Dura-Flo 1800 (430 cc) stainless steel 3 UHMWPE/2 PTFE 31 MPa (310 bar, 4500 psi)

246925, A Dura-Flo 1800 (430 cc) stainless steel 3 UHMWPE/2 leather 31 MPa (310 bar, 4500 psi)

246987, A Dura-Flo 1800 (430 cc) stainless steel 4 leather, 3 UHMWPE throat/

3 UHMWPE, 2 leather piston

246988, A Dura-Flo 1800 (430 cc) stainless steel 4 leather, 3 UHMWPE throat/

3 UHMWPE, 2 leather piston

249992, A Dura-Flo 1800 (430 cc) stainless steel 4 leather, 3 UHMWPE throat/

3 UHMWPE, 2 UHMWPE piston

687055, A Dura-Flo 1800 (430 cc) stainless steel 3 UHMWPE/2 carbon-filled PTFE 31 MPa (310 bar, 4500 psi)

C59703, A Dura-Flo 1800 (430 cc) stainless steel 3 UHMWPE/2 PTFE 31 MPa (310 bar, 4500 psi)

L430CS, A Dura-Flo 1800 (430 cc) carbon steel 3 UHMWPE/2 PTFE 31 MPa (310 bar, 4500 psi)

L430SS, A Dura-Flo 1800 (430 cc) stainless steel 3 UHMWPE/2 PTFE 31 MPa (310 bar, 4500 psi)

L430SM, A Dura-Flo 1800 (430 cc) stainless steel 4 leather, 3 UHMWPE throat/

3 UHMWPE, 2 leather piston

222801, A Dura-Flo 2400 (580 cc) carbon steel 3 PTFE/2 leather 24 MPa (235 bar, 3400 psi)

222991, A Dura-Flo 2400 (580 cc) carbon steel 4 leather/1 PTFE backup 24 MPa (235 bar, 3400 psi)

222992, A Dura-Flo 2400 (580 cc) carbon steel 5 PTFE 24 MPa (235 bar, 3400 psi)

C59798, B Dura-Flo 2400 (580 cc) carbon steel 3 PTFE/2 leather 24 MPa (235 bar, 3400 psi)

222803, A Dura-Flo 2400 (580 cc) stainless steel 3 UHMWPE/2 PTFE 24 MPa (235 bar, 3400 psi)

222993, A Dura-Flo 2400 (580 cc) stainless steel 3 PTFE/2 leather 24 MPa (235 bar, 3400 psi)

222994, A Dura-Flo 2400 (580 cc) stainless steel 5 PTFE 24 MPa (235 bar, 3400 psi)

236226, A Dura-Flo 2400 (580 cc) stainless steel 3 UHMWPE/2 PTFE 24 MPa (235 bar, 3400 psi)

236230, A Dura-Flo 2400 (580 cc) stainless steel 4 leather/1 PTFE backup 24 MPa (235 bar, 3400 psi)

241648, A Dura-Flo 2400 (580 cc) stainless steel 3 UHMWPE/2 carbon-filled PTFE 24 MPa (235 bar, 3400 psi)

249991, A Dura-Flo 2400 (580 cc) stainless steel 4 leather, 3 UHMWPE throat/

3 UHMWPE, 2 UHMWPE piston

15F298, A Dura-Flo 2400 (580 cc) stainless steel 4 leather, 3 UHMWPE throat/

3 UHMWPE, 2 leather piston

L580CS, A Dura-Flo 2400 (580 cc) carbon steel 3 UHMWPE/2 PTFE 24 MPa (235 bar, 3400 psi)

L580SS, A Dura-Flo 2400 (580 cc) stainless steel 3 UHMWPE/2 PTFE 24 MPa (235 bar, 3400 psi)

L580SM, A Dura-Flo 2400 (580 cc) stainless steel 4 leather, 3 UHMWPE throat/

3 UHMWPE, 2 leather piston

Maximum Fluid

Working Pressure

31 MPa (310 bar, 4500 psi)

24 MPa (235 bar, 3400 psi)

Models

311825F 3

Warnings

The following warnings are for the setup, use, grounding, maintenance, and repair of this equipment. The exclamation point symbol alerts you to a general warning and the hazard symbol refers to procedure-specific risk. Refer back to these warnings. Additional, product-specific warnings may be found throughout the body of this manual where applicable.

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:

• Use equipment only in well ventilated area.

• Eliminate all ignition sources; such as pilot lights, cigarettes, portable electric lamps, and plastic drop cloths (potential static arc).

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

• Do not plug or unplug power cords, or turn power or light switches on or off when flammable fumes are present.

• Ground all equipment in the work area. See Grounding instructions.

• Use only grounded hoses.

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

• If there is static sparking or you feel a shock, stop operation immediately. Do not use equipment until you identify and correct the problem.

• Keep a working fire extinguisher in the work area.

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.

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

• Do not put your hand over the spray tip.

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

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

• Engage trigger lock when not spraying.

• Follow Pressure Relief Procedure in this manual, when you stop spraying and before cleaning, checking, or servicing equipment.

EQUIPMENT MISUSE HAZARD

Misuse can cause death or serious injury.

• Do not operate the unit when fatigued or under the influence of drugs or alcohol.

• Do not exceed the maximum working pressure or temperature rating of the lowest rated system component. See Technical Data in all equipment manuals.

• Use fluids and solvents that are compatible with equipment wetted parts. See Technical Data in all equipment manuals. Read fluid and solvent manufacturer’s warnings. For complete information about your material, request MSDS forms from distributor or retailer.

• Check equipment daily. Repair or replace worn or damaged parts immediately with genuine manufacturer’s replacement parts only.

• Do not alter or modify equipment.

• Use equipment only for its intended purpose. Call your distributor for information.

• Route hoses and cables away from traffic areas, sharp edges, moving parts, and hot surfaces.

• Do not kink or over bend hoses or use hoses to pull equipment.

• Keep children and animals away from work area.

• Comply with all applicable safety regulations.

4 311825F

Warnings

WARNING

MOVING PARTS HAZARD

Moving parts can pinch or amputate fingers and other body parts.

• Keep clear of moving parts.

• Do not operate equipment with protective guards or covers removed.

• Pressurized equipment can start without warning. Before checking, moving, or servicing equipment, follow the Pressure Relief Procedure in this manual. Disconnect power or air supply.

TOXIC FLUID OR FUMES HAZARD

Toxic fluids or fumes can cause serious injury or death if splashed in the eyes or on skin, inhaled, or swallowed.

• Read MSDS’s to know the specific hazards of the fluids you are using.

• Store hazardous fluid in approved containers, and dispose of it according to applicable guidelines.

• Always wear impervious gloves when spraying or cleaning equipment.

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:

• Protective eyewear

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

•Gloves

• Hearing protection

311825F 5

Repair

Pressure Relief Procedure

Trapped air can cause the pump to cycle unexpectedly, which could result in serious injury from splashing or moving parts.

1. Engage trigger lock.

2. Shutoff the pump:

a. For air-powered pumps, close the bleed-type

master air valve.

b. For hydraulic-powered pumps, close the supply

line shutoff valve (U) first, then close the return line shutoff valve (V).

3. Disengage the trigger lock.

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

Required Tools

• Set of socket wrenches

• Set of adjustable wrenches

• 24 in. adjustable wrench

• Torque wrench

• Rubber mallet

• Arbor press

• Soft wooden block (approx. 1 square foot in size)

• Large vise, with soft jaws

• Thread lubricant

• Anti-seize lubricant 222955

•Loctite

2760™ or equivalent

Accessory Service Tools are available which fit over the top of the displacement rod, making it easier to use a 24 in. adjustable wrench or 3/4 in. drive socket when disassembling/assembling the rod and piston.

• For Dura-Flo 1800 (430 cc) Lowers, order Part No. 109507 Tool.

• For Dura-Flo 2400 (580 cc) Lowers, order Part No. 109508 Tool.

5. Engage the trigger lock.

6. Open all fluid drain valves in the system, having a waste container ready to catch drainage. Leave drain valve(s) open until you are ready to spray again.

7. If you suspect the spray tip or hose is clogged or that pressure has not been fully relieved after following the steps above, VERY SLOWLY loosen tip guard retaining nut or hose end coupling to relieve pressure gradually, then loosen completely. Clear hose or tip obstruction.

6 311825F

Repair

Disassembly

Lay out all the removed parts in sequence, to ease reassembly. Clean all parts with a compatible solvent and inspect them for wear or damage. Refer to F

Repair Kits are available to replace the throat (T) and piston (P) packings, and to replace the o-rings and cylinder seals. For the best results, use all the new parts in the kit. Kit parts are marked with an asterisk, for example (11*). These kits also can be used to convert the lower to different packing materials. Refer to pages 16-20.

1. Flush the pump, if possible. Stop the pump at the bottom of its stroke. Relieve the pressure, page 6.

2. Disconnect the lower from the motor. See your separate pump assembly manual.

3. Stand the lower upright in a large vise. Loosen, but do not remove, the packing nut (3). Remove the six long cap screws (20).

4. Lift the outlet housing (19) straight up off the lower. Be careful not to scratch the displacement rod (1) while removing the housing.

5. Lift the cylinder (7), displacement rod (1), and piston assembly off the intake housing (17).

IG. 1.

9. Stand the cylinder (7) upright on a wooden block. Using a rubber mallet or an arbor press, drive the displacement rod (1) and piston assembly down into the cylinder as far as possible, then place the cylinder on its side and continue to drive the rod out the bottom until the piston comes free. Pull the rod and piston from the cylinder, being careful not to scratch the rod or cylinder.

• For Dura-Flo 1800 (430 cc) Lowers, order Part No. 109507 Tool.

• For Dura-Flo 2400 (580 cc) Lowers, order Part No. 109508 Tool.

10. Put the flats of the piston seat housing (12) in a vise. Unscrew the rod (1) from the housing (12), leaving the ball guide (9) assembled to the rod. Be careful that the piston ball (10) doesn't fall as you separate the housing (12) and ball guide (9).

11. Remove the glands and v-packings (P) from the piston seat housing (12). Inspect the ball (10) and ball seat (B) on the housing (12) for wear or damage.

6. Remove the seal (6), ball guide (14), intake ball (16), intake seat housing (15), and o-ring (27) from the intake housing (17). Inspect the ball (16) and the ball seat (A) on the housing (15) for wear or damage.

7. Remove the seal (6) from the bottom of the outlet housing (19). Unscrew the packing nut (3). Remove the glands and v-packings (T) from the housing. Do not remove the outlet fitting (4) and o-ring (5) unless they need replacement.

8. Unscrew the bleeder valve plug (35) completely from the valve body (34). Clean the valve threads and the bleed hole. It is not necessary to remove the valve body.

CAUTION

To reduce the possibility of costly damage to the rod (1) and cylinder (7), first place the cylinder on a soft block of wood. Always use a rubber mallet or an arbor press to drive the rod (1) out of the cylinder (7). Never use a hammer to drive the rod.

12. Inspect the outer surface of the displacement rod (1) and the inner surface of the cylinder (7) for scoring or wear; replace if damaged. If replacing the rod, remove the ball guide (9) (see step 13).

Do not remove the ball guide (9) from the displacement rod (1) unless either part needs replacement.

13. Place the flats of the ball guide (9) in a vise. Using a 24 in. adjustable wrench or 3/4 in. drive socket, unscrew the rod (1) from the ball guide.

311825F 7

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