Graco 3A0732J User Manual

Instructions/Parts

Merkur

Spray Packages

For low-volume fine finish spray applications. For professional use only.

Important Safety Instructions

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

15:1 Spray Packages 30:1 Spray Packages

3A0732J

100 psi (0.7 MPa, 7.0 bar) Maximum Air Inlet Pressure

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

ti15589a

ti15590a

II 2 G c T5 X

Contents

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

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

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Prepare the Operator . . . . . . . . . . . . . . . . . . . . . 7

Prepare the Site . . . . . . . . . . . . . . . . . . . . . . . . . 7

Supplied Components . . . . . . . . . . . . . . . . . . . . . 7

Inline Fluid Filter Kits . . . . . . . . . . . . . . . . . . . . . . 7

Air Line Accessories . . . . . . . . . . . . . . . . . . . . . . 7

Wall Mount Packages . . . . . . . . . . . . . . . . . . . . . 8

Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Flush Before Using Equipment . . . . . . . . . . . . . . 8

Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Pressure Relief Procedure . . . . . . . . . . . . . . . . 10

Trigger Lock . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Prime the Pump . . . . . . . . . . . . . . . . . . . . . . . . 10

Install the Spray Tip . . . . . . . . . . . . . . . . . . . . . 11

Adjust the Atomization . . . . . . . . . . . . . . . . . . . 11

Adjust the Spray Pattern . . . . . . . . . . . . . . . . . . 12

Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Tighten Threaded Connections . . . . . . . . . . . . . 13

Flush the Pump . . . . . . . . . . . . . . . . . . . . . . . . . 13

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

General Information . . . . . . . . . . . . . . . . . . . . . . 15

To Remove Intake Valve Only . . . . . . . . . . . . . . 15

Disconnect the Displacement Pump . . . . . . . . . 15

Disassemble the Pump . . . . . . . . . . . . . . . . . . . 16

Reassemble the Pump . . . . . . . . . . . . . . . . . . . 16

Reconnect the Displacement Pump . . . . . . . . . 16

Repair Air Valve . . . . . . . . . . . . . . . . . . . . . . . . . 18

Replace Pilot Valves . . . . . . . . . . . . . . . . . . . . . 20

Disconnect the Air Motor . . . . . . . . . . . . . . . . . . 21

Reconnect the Air Motor . . . . . . . . . . . . . . . . . . 21

Repair Air Motor . . . . . . . . . . . . . . . . . . . . . . . . 22

Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Package Parts . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Hose and Gun . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Displacement Pump Parts . . . . . . . . . . . . . . . . . 30

Air Motor Parts . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Air Valve Parts . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Air Control Parts . . . . . . . . . . . . . . . . . . . . . . . . 36

Kits and Accessories . . . . . . . . . . . . . . . . . . . . . . . 38

Package Dimensions . . . . . . . . . . . . . . . . . . . . . . . 39

Package Weights . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Wall Bracket Mounting Hole Diagram . . . . . . . . . 40

Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Performance Charts . . . . . . . . . . . . . . . . . . . . . . . . 42

15:1 Ratio Pumps . . . . . . . . . . . . . . . . . . . . . . . 42

30:1 Ratio Pumps . . . . . . . . . . . . . . . . . . . . . . . 43

Graco Standard Warranty . . . . . . . . . . . . . . . . . . . 44

Graco Information . . . . . . . . . . . . . . . . . . . . . . . . . 44

2 3A0732J

Models

Maximum Fluid Working Pressure

Package Series Ratio

24F150 A 15:1 1500 (10.3, 103) Air-assisted G15 Carbide Wall Plated Steel 24F151 A 15:1 1500 (10.3, 103) Air-assisted G15 Carbide Stand Plated Steel 24F152 A 30:1 3000 (20.7, 207) Air-assisted G40 Wall Stainless Steel 24F153 A 30:1 3000 (20.7, 207) Air-assisted G40 Stand Stainless Steel 24F154 A 30:1 3000 (20.7, 207) Airless Silver Plus Wall Plated Steel 24F155 A 30:1 3000 (20.7, 207) Airless Silver Plus Stand Plated Steel 24F156 A 30:1 3000 (20.7, 207) Air-assisted G40 Wall Plated Steel 24F157 A 30:1 3000 (20.7, 207) Air-assisted G40 Stand Plated Steel 24F158 A 15:1 1500 (10.3, 103) Air-assisted G15 Carbide Wall Stainless Steel 24F159 A 15:1 1500 (10.3, 103) Air-assisted G15 Carbide Stand Stainless Steel 24N548* A 30:1 3000 (20.7, 207) WB3000 ----- ----- Stainless Steel 24W281 A 15:1 1500 (10.3, 103) Air-assisted G15 Carbide Stand Plated Steel 24W283 A 15:1 1500 (10.3, 103) Air-assisted G15 Carbide Stand Stainless Steel 24W285 A 30:1 3000 (20.7, 207) Air-assisted G40 Stand Plated Steel 24W287 A 30:1 3000 (20.7, 207) Air-assisted G40 Stand Stainless Steel

psi (MPa, bar)

Package Type Gun Mounting Material

* Part No. 24N548 is used as a supply pump in the WB3000 Waterborne Isolation System. It includes a pump

bracket and items 7-19, 21, 23, and 28-42 on page 25. See manual 3A2497 for warnings and instructions for a waterborne system.

3A0732J 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 symbols refer to procedure-specific risks. When these symbols appear in the body of this manual, refer back to these Warnings. Product-specific hazard symbols and warnings not covered in this section may appear throughout the body of this manual where applicable.

WARNING

WARNINGWARNINGWARNING

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.

SPECIAL CONDITIONS FOR SAFE USE

Static charge may build up on plastic parts during cleaning and could discharge and ignite flammable vapors. To help prevent fire and explosion:

• Clean plastic parts only in well ventilated area.

• Do not clean with a dry cloth.

• Do not operate electrostatic guns in equipment 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 spray without tip guard and trigger guard installed.

• Engage trigger lock when not spraying.

• 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.

• Follow the Pressure Relief Procedure when you stop spraying 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.

4 3A0732J

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 distributor 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.

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.

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 MSDSs 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.

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.

3A0732J 5

Warnings

6 3A0732J

Installation

Prepare the Operator

All persons who operate the equipment must be trained in the safe, efficient operation of all system components as well as the proper handling of all fluids. All operators must thoroughly read all instruction manuals, tags, and labels before operating the equipment.

Prepare the Site

Ensure that you have an adequate compressed air supply.

Bring a compressed air supply line from the air compressor to the pump location. Be sure all air hoses are properly sized and pressure-rated for your system. Use only electrically conductive hoses. The air hose should have a 3/8 npt(m) thread. A quick disconnect coupling is recommended.

Keep the site clear of any obstacles or debris that could interfere with the operator's movement.

Have a grounded, metal pail available for use when flushing the system.

•The spray gun (H) dispenses the fluid. The gun houses the spray tip (not shown), which is available in a wide range of sizes for different spray patterns and rates of flow. Refer to gun manual for tip installation.

•The red hose (G) provides the gun air supply.

•The blue hose (K) provides the gun fluid supply.

•The suction kit with strainer (J) allows the pump to draw fluid from a 5 gallon (19 liter) pail.

Inline Fluid Filter Kits

Inline fluid filter kits are available as an accessory in stainless steel (24F271) or aluminum (24F272), to filter particles from fluid as it leaves the pump. Kits include a 60 mesh (250 micron) stainless steel element.

Air Line Accessories

Install the following accessories in the order shown in F

. 2, using adapters as necessary.

Supplied Components

See FIG. 2 on page 9.

• The red-handled bleed-type master air valve (D) is required in your system to relieve air trapped between it and the air motor and gun when the valve is closed. Do not block access to the valve.

• The pump air regulator (F) controls pump speed and outlet pressure by adjusting the air pressure to the pump.

• The air pressure relief valve (P) opens automatically to prevent overpressurization of the pump.

• The gun air regulator (E) adjusts the air pressure to the air-assisted spray gun.

•An air-line filter (C) removes harmful dirt and mois- ture from the compressed air supply.

• A second bleed-type air shutoff valve (B) isolates the air line accessories for servicing. Locate upstream from all other air line accessories.

3A0732J 7

Installation

Wall Mount Packages

1. Be sure the wall can support the weight of the pump, bracket, hoses and accessories, as well as the stress caused during operation.

2. Position the wall bracket at a convenient height. Do not stretch the suction hose tight; let it hang to assist fluid flow into the pump. For ease of operation and service, make sure the pump air inlet, fluid inlet, and fluid outlet ports are easily accessible.

3. Using the wall bracket as a template, drill mounting holes in the wall. Hole diameters and wall mounting dimensions are shown on page 40.

4. Attach the bracket to the wall. Use screws that are long enough to keep the pump from vibrating during operation.

NOTE: Be sure the bracket is level.

Grounding

2. Air and fluid hoses: Static electricity may build up when fluids flow through pumps, hoses, and sprayers. At least one hose must be electrically conductive, with a maximum of 500 ft. (150 m) combined hose length to ensure grounding continuity. Check electrical resistance of hoses. If total resistance to ground exceeds 25 megohms, replace hose immediately.

3. Air compressor: follow manufacturer's recommendations.

4. Spray gun: ground through connection to a properly grounded fluid hose and pump.

5. Fluid supply container: follow your local code.

6. Object being sprayed: follow your local code.

7. Solvent pails used when flushing: follow your local code. Use only metal pails, which are conductive, placed on a grounded surface. Do not place the pail on a nonconductive surface, such as paper or cardboard, which interrupts the grounding continuity.

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.

1. Pump: See FIG. 1. Verify that the ground wire (26) is attached to the ground screw (23), and the screw is tightened securely to the adapter plate (10). Use any of the three threaded holes in the adapter plate. Connect the other end of the ground wire to a true earth ground.

8. To maintain grounding continuity when flushing or relieving pressure, hold a metal part of the spray gun firmly to the side of a grounded metal pail, then trigger the gun.

Flush Before Using Equipment

The equipment was tested with lightweight oil, which is left in the fluid passages to protect parts. To avoid contaminating your fluid with oil, flush the equipment with a compatible solvent before using the equipment. See Prime the Pump, page 10.

ti16282a

FIG. 1. Ground Wire

8 3A0732J

Setup

Installation

1. See FIG. 2. Attach one end of fluid hose (K) to pump outlet (or optional inline fluid filter outlet).

2. Attach other end of fluid hose to gun fluid inlet at base of gun (H).

3. Attach one end of the air hose (G) to gun air regulator (E).

4. Attach remaining end of the air hose to air inlet at base of gun (H).

5. Clip fluid and air hoses together with the supplied hose clips (qty. of 7). Space clips as needed.

6. Attach the fluid suction kit (J) to the pump inlet.

Key:

A Main Air Supply Line B Air Shutoff Valve C Air Filter D Bleed-type Master Air Valve (required) E Gun Air Pressure Regulator F Pump Air Pressure Regulator G Gun Air Supply Line H Spray Gun J Fluid Suction Kit K Gun Fluid Supply Line L Pump Ground Wire (required) M Mounting Bracket (used for wall mounting or stand) N Pump Stand P Air Pressure Relief Valve

ti15591a

FIG. 2. Typical Installation (Air-Assisted Stand Mount Package Shown)

3A0732J 9

Operation

Pressure Relief Procedure

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

1. Lock the gun trigger.

2. See F

3. Unlock the gun trigger.

4. Hold a metal part of the gun firmly to a grounded

5. Lock the gun trigger.

6. If you suspect that pressure has not been fully

. 2. Turn off the bleed-type master air valve

(D).

metal waste container. Trigger the gun to relieve fluid pressure.

relieved after following the steps above, check the following:

Trigger Lock

See FIG. 3. Always engage gun trigger lock when you stop spraying to prevent gun from being triggered accidentally by hand or if dropped or bumped.

Gun Trigger Locked

tiI6581A

Gun Trigger Unlocked

a. The spray tip may be completely clogged. Very

slowly loosen the air cap retaining ring to relieve pressure in the cavity between the ball/seat shutoff and the plugged tip. Clear the tip orifice.

b. The gun fluid filter or the fluid hose may be com-

pletely clogged. Very slowly loosen the hose end coupling at the gun and relieve pressure gradually. Then loosen completely to clear the obstruction.

c. After following the steps above, if the spray tip

or hose still seems completely clogged, very slowly loosen the tip guard retaining nut or hose end coupling and relieve pressure gradually, then loosen completely. With tip removed, trigger gun into waste container.

ti6582A

FIG. 3. Trigger Lock

Prime the Pump

Have safety spring (9) in place during operation to reduce risk of pinching or loss of fingers.

1. See FIG. 3. Lock gun trigger. Remove tip guard and spray tip from gun. Refer to gun manual.

10 3A0732J

Operation

2. See FIG. 2. Close gun air regulator (E) and pump air regulator (F) by turning knobs counterclockwise reducing pressure to zero. Close bleed-type air valve (D).

3. Connect air line to bleed type air valve.

4. Check that all fittings throughout system are tightened securely.

5. Position pail close to pump. Suction hose is 3 ft (0.9 m) long. Do not stretch hose tight; let it hang to assist fluid flow into pump.

6. Hold metal part of gun firmly to side of grounded metal pail, unlock trigger, and hold trigger open.

7. Open bleed-type air valve. Slowly turn pump air regulator clockwise, increasing pressure until pump starts.

8. Cycle pump slowly until all air is pushed out and pump and hoses are fully primed.

9. Release gun trigger and lock trigger safety. Pump should stall against pressure.

Adjust the Atomization

NOTE: Use this procedure with airless and air-assisted

spray guns.

1. Do not turn on atomizing air supply. Fluid pressure is controlled by the air pressure supplied to the pump (pump air regulator). Set fluid pressure at low starting pressure. For low viscosity fluids (less than 25 sec, #2 Zahn cup) with lower percent solids (typically less than 40%), start at 300 psi (2.1 MPa, 21 bar) at pump outlet. For fluids with higher viscosity or higher solids content, start at 600 psi (4.2 MPa, 42 bar). Refer to the following example.

Example:

Pump Air

Pump

Ratio

15:1 x 20 (0.14, 1.4) = 300 (2.1, 21) 30:1 x 20 (0.14, 1.4) = 600 (4.2, 42)

Regulator Setting

psi (MPa, bar)

Approximate

Fluid Pressure

psig (MPa, bar)

Install the Spray Tip

Follow Pressure Relief Procedure, page 10. Install the spray tip and tip guard as explained in your separate gun manual, supplied.

The fluid output and pattern width depend on the size of the spray tip, the fluid viscosity, and the fluid pressure. Use the Spray Tip Selection Chart in your gun instruction manual as a guide for selecting an appropriate spray tip for your application.

NOTE: The maximum recommended spray tip size is .019 in. (0.483 mm).

2. Hold gun perpendicular and approximately 12 inches (304 mm) from surface.

3. Move gun first, then pull gun trigger to spray onto test paper.

4. Increase fluid pressure in 100 psi (0.7 MPa, 7 bar) increments, just to the point where a further increase in fluid pressure does not significantly improve fluid atomization. Refer to the following example.

Example:

Pump Air Regulator

Pump

Ratio

15:1 x 7 (.05, 0.5) = 100 (0.7, 7.0) 30:1 x 3.3 (0.02, 0.2) = 100 (0.7, 7.0)

5. If you are using an air-assisted spray gun, see

Adjust the Spray Pattern on page 12.

Increment

psi (MPa, bar)

Incremental

Fluid Pressure

psi (MPa, bar)

3A0732J 11

Operation

Adjust the Spray Pattern

NOTE: Use this procedure with air-assisted spray guns

only.

1. See F

OUT (narrower pattern)

. 4. Close off pattern adjustment air by turning knob (AA) clockwise (in) all the way. This sets gun for its widest pattern.

IN (wider pattern)

3. See F

. 4. For narrower pattern, turn pattern adjustment valve knob (AA) counterclockwise (out). If pattern is still not narrow enough, increase air pressure to gun slightly or use different size tip.

no air

too little air

correct

amount of

air

TI0792A

FIG. 5. Spray Pattern Problems

Shutdown

ti6559A

FIG. 4. Pattern Air Knob

2. See F

. 5. Set atomizing air pressure at about 5 psi (0.35 bar, 35 kPa) when triggered. Check spray pattern, then slowly increase air pressure until tails are completely atomized and pulled into spray pattern. Do not exceed 100 psi (0.7 MPa, 7 bar) air pressure to gun.

Follow Pressure Relief Procedure, page 10.

Always flush the pump before the fluid dries on the displacement rod. See Flush the Pump on page 13.

12 3A0732J

Maintenance

Tighten Threaded Connections

Before each use, check all hoses for wear or damage. Replace as necessary. Check that all threaded connections are tight and leak-free.

Flush the Pump

Read all Warnings. Follow all Grounding instructions. See page 8.

Flush the pump:

• Before first use

• When changing colors or fluids

• Before repairing equipment

• Before fluid dries or settles out in a dormant pump (check the pot life of catalyzed fluids)

Flush at the lowest pressure possible. Flush with a fluid that is compatible with the fluid you are pumping and with the wetted parts in your system. Check with your fluid manufacturer or supplier for recommended flushing fluids and flushing frequency.

1. Follow Pressure Relief Procedure, page 10.

2. Remove tip guard and spray tip from gun. Refer to separate gun manual.

3. Place suction tube in grounded metal pail containing cleaning fluid.

4. Set pump to lowest possible fluid pressure, and start pump.

5. Hold a metal part of the gun firmly to a grounded metal pail.

6. Trigger gun. Flush system until clear solvent flows from gun.

7. Follow Pressure Relief Procedure, page 10.

8. Clean the tip guard, spray tip, and fluid filter element separately, then reinstall them.

• At the end of the day

• Before storing the pump.

9. Clean inside and outside of suction tube and suction hose.

3A0732J 13

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 (214). Replace or service air valve (214). See

page 18.

Damaged pilot valve (213). Replace pilot valves (213). See page 20.

Air continuously exhausting around air motor piston rod.

Air continuously exhausting from muffler.

Air motor “bounces” at top of stroke. Damaged bottom pilot valve (213). Replace bottom pilot valve (213). See

Air motor “bounces” at bottom of stroke.

Icing inside motor. Air motor operating at high pressure or

Damaged u-cups (207). Replace piston rod u-cups (207). See

page 22.

Damaged air valve plate (305) or cup (312).

Damaged top pilot valve (213). Replace top pilot valve (213). See page

high cycle rate.

Replace or service air valve (214). See page 18.

page 20.

20.

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

Reduce dew point of compressed air in moisture coalescing filter.

Pump fails to operate. Restricted line or inadequate air supply;

closed or clogged valves.

Obstructed fluid hose or gun; fluid hose ID is too small.

Fluid dried on the displacement rod (119). Clean; keep the packing nut wet-cup filled

Pump operates but does not prime. Held open or worn ball check valves or pis-

ton packings.

Worn suction hose o-ring (38). Replace suction hose o-ring (38).

Pump operates, but output is low on both strokes.

Pump operates, but output is low on downstroke.

Erratic or accelerated pump speed. Exhausted fluid supply. Refill and prime.

Fluid being pumped is visible in the packing nut wet-cup.

Bad spray pattern. Clean or repair spray gun or tip. See G15/G40 air-assisted gun manual or

Restricted line or inadequate air supply; closed or clogged valves.

Obstructed fluid hose or gun; fluid hose ID is too small.

Worn packings in displacement pump. Replace packings. See page 16.

Held open or worn ball check valves or piston packings.

Held open or worn ball check valves or packings.

Worn throat packings. Tighten packing nut.

Clear line or increase air supply. Check that the valves are open.

Open, clear*; use hose with larger ID.

with Graco throat seal liquid (TSL).

Clear valve; replace packings. See page

16.

Clear line or increase air supply. Check that the valves are open.

Open, clear*; use hose with larger ID.

Clear valve; replace packings. See page

16.

Clear valve, replace packings. See page

16.

Replace throat packings. See page 16.

Silver Plus airless gun manual.

14 3A0732J

+ 30 hidden pages