Graco 223177, 90-70 User Manual

Instructions–Parts List

Displacement Pump

For supply and circulation of finishing materials.

Important Safety Instructions Read all warnings and instructions in this manual. Save these instructions.

400 psi (28 bar) Maximum Working Pressure*

* The maximum safe working pressure is determined by the

motor to which this displacement pump is connected.

Part No. 223177, Series D

Carbon Steel, UHMWPE and Leather Packed Pump

Table of Contents

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Warnings 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Service 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Parts 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Technical Data 11. . . . . . . . . . . . . . . . . . . . . . . . . .

Graco Warranty 12. . . . . . . . . . . . . . . . . . . . . . . . .

Graco Information 12. . . . . . . . . . . . . . . . . . . . . . .

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Symbols

Warning Symbol

WARNING

This symbol alerts you to the possibility of serious injury or death if you do not follow the instructions.

WARNING

EQUIPMENT MISUSE HAZARD

Equipment misuse can cause the equipment to rupture or malfunction and result in serious injury.

INSTRUCTIONS

D This equipment is for professional use only.

D Read all instruction manuals, tags, and labels before operating the equipment.

D Use the equipment only for its intended purpose. If you are not sure, call your Graco distributor.

Caution Symbol

CAUTION

This symbol alerts you to the possibility of damage to or destruction of equipment if you do not follow the instructions.

D Do not alter or modify this equipment.

D Check equipment daily. Repair or replace worn or damaged parts immediately.

D Do not exceed the maximum working pressure of the lowest rated system component. Refer to the

Technical Data on page 11 for the maximum working pressure of this equipment.

D Use fluids and solvents which are compatible with the equipment wetted parts. Refer to the Tech-

nical Data on page 11, and in all equipment manuals. Read the fluid and solvent manufacturer’s

warnings.

D Do not use hoses to pull equipment.

D Route hoses away from traffic areas, sharp edges, moving parts, and hot surfaces. Do not expose

Graco hoses to temperatures above 82_C (180_F) or below –40_C (–40_F).

D Wear hearing protection when operating this equipment.

D Do not lift pressurized equipment.

D Comply with all applicable local, state, and national fire, electrical, and safety regulations.

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WARNING

FIRE AND EXPLOSION HAZARD

Improper grounding, poor ventilation, open flames or sparks can cause a hazardous condition and result in a fire or explosion and serious injury.

D Ground the equipment and the object being sprayed. Refer to Grounding in your separate pump

manual.

D If there is any static sparking or you feel an electric shock while using this equipment, stop spray-

ing immediately. Do not use the equipment until you identify and correct the problem.

D Provide fresh air ventilation to avoid the buildup of flammable fumes from solvents or the fluid

being sprayed.

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

D Electrically disconnect all equipment in the spray area.

D Extinguish all open flames or pilot lights in the spray area.

D Do not smoke in the spray area.

D Do not turn on or off any light switch in the spray area while operating or if fumes are present.

D Do not operate a gasoline engine in the spray area.

TOXIC FLUID HAZARD

Hazardous fluid or toxic fumes can cause serious injury or death if splashed in the eyes or on the skin, inhaled, or swallowed.

D Know the specific hazards of the fluid you are using.

D Store hazardous fluid in an approved container. Dispose of hazardous fluid according to all local,

state and national guidelines.

D Always wear protective eyewear, gloves, clothing and respirator as recommended by the fluid and

solvent manufacturer.

MOVING PARTS HAZARD

Moving parts can pinch or amputate your fingers.

D Keep clear of all moving parts when starting or operating the pump.

D Before servicing the equipment, follow the Pressure Relief Procedure on page 4 to prevent the

equipment from starting unexpectedly.

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Service

Pressure Relief Procedure

WARNING

PRESSURIZED EQUIPMENT HAZARD

The system pressure must be manually relieved to prevent the system from starting or spraying accidentally. To reduce the risk of an injury from accidental spray from the gun, splashing fluid, or moving parts, follow the Pressure Relief Proce- dure whenever you:

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

1. Shut off the air or hydraulic power supply to the pump.

2. Close the bleed-type master air valve (required in air-powered systems).

1. If you are pumping heavy viscosity fluid and erratic pump operation develops, disassemble the pump as explained on page 5. To increase the ball travel in the intake valve, move the pin (18) to the center or upper set of holes. To increase the ball travel in the piston valve, place the piston in a vise, loosen the upper cap (27) to relieve tension on the plunger rod (23), and turn the plunger rod counterclockwise two complete turns beyond its factory-set position, or enough to set the total ball travel to 0.306 in. (7.8 mm).

2. If you are pumping lighter viscosity fluid and surging develops, disassemble the pump as explained on page 5. To decrease the ball travel in the intake valve, place the pin (18) in the lowest set of holes. To decrease the ball travel in the piston valve, place the piston in a vise, loosen the upper cap (27) to relieve tension on the plunger rod (23), and turn the plunger rod clockwise two complete turns beyond its factory-set position, or enough to set the total ball travel to 0.102 in. (2.6 mm).

3. Hold a metal part of the gun firmly to the side of a grounded metal pail, and trigger the gun to relieve pressure.

4. Open the drain valve (required in your system), having a container ready to catch the drainage.

5. Leave the drain valve open until you are ready to spray again.

If you suspect that the spray nozzle or hose is completely clogged, or that pressure has not been fully relieved after following the steps above, very slowly

loosen the nozzle retaining ring or hose end coupling and relieve pressure gradually, then loosen completely. Now clear the nozzle or hose.

Piston and Intake Valve Adjustment

See Fig. 1. The fluid piston and intake check valves are factory-set for pumping medium viscosity fluids. The ball stop pin (18) in the intake valve is in the lowest set of holes. The piston ball travel is set at

0.204 in. (5.2 mm), measured from the end of the

adjustable plunger rod (23) to the top of the ball (22). This distance represents four complete turns of the rod (23) from the top of the ball.

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Fig. 1

Piston Valve

Intake Valve

Ball Travel

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