Graco 24H786, 24W754, 24G787, 24R015, 24G785 User Manual

...

Instructions/Parts

™

SaniForce

For use on SaniForce™piston pumps, which are used to transfer medium to high viscosity fluids in applications requiring high sanitation. For professional use only.

Air Motors

3A1211M

Model 24G785, Series A, 3.5 in. Air Motor Model 24G786, Series A, 6.0 in. Air Motor Model 24G787, Series A, 7.5 in. Air Motor Model 24R491, Series A, 6.0 in. Air Motor Model 24R015, Series A, 7.5 in. Air Motor Model 24W754, Series A, 6.0 in. Air Motor

Important Safety Instructions

Read all warnings and instructions in this manual. For complete warnings and instructions see your pump or package manual. Hazard symbols refer to specific procedure risks. Save all instructions.

See page 5 for model information, including maximum air inlet pressure.

Air Motor shown with Shrouds and Lift Ring (see page 5)

ti16220a

Related Manuals

Contents

RelatedManuals ...........................2

Warnings .................................3

Models ...................................5

Component Identification .................... 6

Grounding .............................. 6

Troubleshooting ............................ 7

Repair .................................... 8

Preventive Maintenance Schedule ...........8

Pressure Relief Procedure ................. 8

Remove the Shroud ......................8

Repair Air Valve .......................... 9

Replace Pilot Valves .....................11

Related Manuals

Manual Description

3A0733 SaniForce 6:1 Sanitary Pump

3A0734 SaniForce 5:1 Sanitary Pump

3A0735 SaniForce 12:1 Sanitary Pump

3A0591 SaniForce Sanitary Ram Modules

311163 SaniForce Bin Evacuation System

Repair Air Motor ........................12

AttachtheShroud .......................13

Parts ....................................14

Air Motor Parts — All Models ..............15

Shroud Kits, Fittings, and Fasteners* ........16

Air Motor Seal Kits .......................17

Model 24A352 Air Valve Parts ..............17

AirValveKits ...........................18

Dimensions ...............................19

TechnicalData ............................21

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

2 3A1211M

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. When these symbols appear in the body of this manual, refer back to these warnings. Additional, product-specific warnings may be found throughout the body of this manual where applicable.

WARNING

WARNINGWARNINGWARNING

SKIN INJECTION HAZARD

High-pressure fluid from dispensing device, 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 dispensing device at anyone or at any par t of the body.

• Do not put your hand over the fluid outlet.

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

• Follow the Pressure Relief Procedure when you stop dispensing and before cleaning, checking, or servicing equipment.

• Tighten all fluid connections before operating the equipment.

• Check hoses and couplings daily. Replace worn or damaged parts immediately.

MOVING PARTS HAZARD

Moving parts can pinch, cut 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 and disconnect all power sources.

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.

3A1211M 3

Warnings

WARNING

WARNINGWARNINGWARNING

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 from distr ibutor or retailer.

• Do not leave the work area while equipment is energized or under pressure. Turn off all equipment and follow the Pressure Relief Procedure when equipment is not in use.

• 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.

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, hearing loss, inhalation of toxic fumes, and burns. This equipment includes but is not limited to:

• Protective eyewear, and hearing protection.

• Respirators, protective clothing, and gloves as recommended by the fluid and solvent manufacturer.

4 3A1211M

Models

Check your motor’s identification plate (ID) for the 6-digit part number of your motor.

Models

ti16228a

Air Motor Part Number

24G785 24J765 A 800 4.75 3.5 (89) 100 psi (0.7 MPA, 7.0 bar) 24G786 24J764 A 2200 4.75 6.0 (152) 100 psi (0.7 MPA, 7.0 bar) 24G787 24J760 A 3500 4.75 7.5 (191) 100 psi (0.7 MPA, 7.0 bar) 24R491 ----- A 2200 4.75 6.0 (152) 100 psi (0.7 MPA, 7.0 bar) 24R015 ----- A 3500 4.75 7.5 (191) 100 psi (0.7 MPA, 7.0 bar)

24W754 ----- A 2200 4.75 6.0 (152) 100 psi (0.7 MPA, 7.0 bar)

Air Motor in Kit with Shrouds Series

Displacement

(cc per cycle)

Stroke

(in.)

Piston

Diameter,

in. (mm)

Maximum Air Inlet Pressure

psi (MPa, bar)

3A1211M 5

Component Identification

Model 24R491

ti21099a

ti16221a

FIG. 1. SaniForce Air Motor components

Key:

Air Motor Kit Components

A Air valve B Pilot valve (bottom pilot valve is out of view) C Top cover D Bottom cover E Manifold F Ground screw

Lift Ring, Shrouds, and Fittings

G Air inlet, 1/2 in. npt(f) H Air outlet, 3/4 in. npt J Lift Ring K Upper Shroud L Lower Shroud (out of view)

ti16222a

Grounding

The equipment must be grounded. Grounding reduces the risk of static and electric shock by providing an escape wire for the electrical current due to static build up or in the event of a short circuit.

See FIG. 1. Connect a ground wire (Graco PN 238909) to the ground screw (12) on the bottom cover of the air motor, under the shroud. Connect the other end of the ground wire to a true earth ground.

6 3A1211M

Troubleshooting

NOTE: Check all possible problems and causes before

disassembling the pump.

Relieve the pressure before checking or servicing the equipment.

Problem Cause Solution

Air motor will not run. Damaged air valve (17). Replace or service air valve (17).

See page 9.

Damaged pilot valve (19). Replace pilot valves (19). See page

11.

Air continuously exhausting around air motor piston rod.

Air continuously exhausting from muffler.

Air motor “bounces” at top of stroke.

Air motor “bounces” at bottom of stroke.

Icing inside motor. Air motor operating at high pressure

Damaged u-cups (3, 33). Replace piston rod u-cups (3, 33).

Damaged air valve plate (105) or cup (112).

Damaged piston o-ring (8). Replace seals. See page 12.

Damaged bottom pilot valve. Replace bottom pilot valve (19). See

Damaged top pilot valve. Replace top pilot valve (19). See

or high cycle rate.

See page 12.

Replace or service air valve (17). See page 9.

page 11.

Reduce pressure, cycle rate, or duty cycle of motor.

Reduce dew point of compressed air in moisture coalescing filter.

3A1211M 7

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