Graco 237607, 235628, 235627, 237649, 243775 User Manual

Instructions – Parts List

WATERBASE COMPATIBLE

Ultra–litet Pistol Grip

308253N

Flo–Gun

Model 235627, Series B

4000 psi (280 bar) Maximum Working Pressure

Tapered Valve Needle

Model 235628, Series D

6000 psi (415 bar) Maximum Working Pressure

Ball End Valve Needle, Abrasive Material Compatible

Model 243775, Series B

6000 psi (415 bar) Maximum Working Pressure

Tapered Valve Needle

Model 237607, Series A

4000 psi (280 bar) Maximum Working Pressure

Tapered Valve Needle, Abrasive Material Compatible

Model 237649, Series A

4000 psi (280 bar) Maximum Working Pressure

Tapered Valve Needle, Abrasive Material Compatible, Swivel Fitting Fluid Inlet

U.S. Patent No. Des. 342,654

Symbols 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Warning 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Technical Data 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Installation 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operation 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Service 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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

Graco Warranty and Limitation of Liability 22. . . . . . . . .

Graco Phone Number 22. . . . . . . . . . . . . . . . . . . . . . . . . .

Important Safety Instructions

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

01609A

Symbols

Warning Symbol

WARNING

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

WARNING

SKIN INJECTION HAZARD

Spray from the gun, hose leaks, or ruptured components can inject fluid into your body and cause extremely serious injury, including the need for amputation. Splashing fluid in the eyes or on the skin can also cause serious injury.

 Fluid injected into the skin might look like just a cut, but it is a serious injury. Get immediate surgi-

cal treatment.

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

 Do not put hand or fingers over the gun nozzle.

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

 Be sure the gun trigger safety operates before dispensing.

Caution Symbol

CAUTION

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

 Lock the gun trigger safety when you stop dispensing.

 If the nozzle clogs while dispensing, fully release the trigger immediately

 Follow the Pressure Relief Procedure on page 6 whenever you: are instructed to relieve pres-

sure; stop spraying; clean, check, or service the equipment; and install or clean the nozzle.

 Tighten all the fluid connections before operating the equipment.

 Check the hoses, tubes, and couplings daily. Replace worn, damaged, or loose parts immediately.

Permanently coupled hoses cannot be repaired; replace the entire hose.

TOXIC FLUID HAZARD

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

 Know the specific hazards of the fluid you are using. Read the fluid manufacturer’s warnings.

 Store hazardous fluid in an approved container. Dispose of the hazardous fluid according to all

local, state, and national guidelines.

 Wear appropriate protective clothing, gloves, eyewear, and respirator.

2 308253

WARNING

FIRE AND EXPLOSION HAZARD

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

 Ground the equipment and the object being sprayed. See Ground the System on page 5.

 Provide fresh air ventilation to avoid the buildup of flammable fumes from solvent or the fluid being

sprayed.

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

 Electrically disconnect all the equipment in the spray area.

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

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

 Do not smoke in the spray area.

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

 If there is any static sparking while using the equipment, stop spraying immediately. Identify and

correct the problem.

EQUIPMENT MISUSE HAZARD

INSTRUCTIONS

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

 This equipment is for professional use only.

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

 Use the equipment only for its intended purpose. If you are uncertain about usage, call your Graco

distributor.

 Do not alter or modify this equipment. Use only genuine Graco parts and accessories.

 Check the equipment daily. Repair or replace worn or damaged parts immediately.

 Do not exceed the maximum working pressure of the lowest rated system component. See the

front cover or the Technical Data for the maximum working pressure of your gun model.

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

expose Graco hoses to temperatures above 180F (82C) or below –40F (–40C).

 Do not use the hoses to pull the equipment.

 Use only Graco approved hoses. Do not remove hose spring guards, which help protect the hose

from rupture caused by kinks or bends near the couplings.

 Use fluids or solvents that are compatible with the equipment wetted parts. See the Technical

Data section of all the equipment manuals. Read the fluid and solvent manufacturer’s warnings.

 Do not use 1,1, 1-trichloroethane, methylene chloride, other halogenated hydrocarbon solvents or

fluids containing such solvents with gun Models 235627, 237607, and 237649. Such use could result in a serious chemical reaction with the gun’s aluminum parts, with the possibility of an explosion.

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

308253 3

Technical Data

Maximum Working Pressure

Models 235627, 237607,

and 237649 4000 psi (280 bar). . . . . . . . . . . . .

Models 235628 and 243775 6000 psi (415 bar). . .

Outlet Port Size

All Models 1/4 npt(f) with nut for metal. . . . . . . . . .

Inlet Port Size

Models 235627 and 237607 1/4 npt(f). . . . . . . . . . .

Models 235628 and 243775 1/2 npt(f). . . . . . . . . . .

Model 237649 37 SAE, 1/2-20 UNF(m). . . . . . . . .

Valve Orifice

Models 235627, 237607, 243775,

and 237649 0.20 in. (5.08 mm) dia.. . . . . . . . .

with tapered needle

Model 235628 0.19 in. (4.83 mm) dia. with. . . . . . .

0.25 in. (6.35 mm) carbide ball

Height

All Models 5.90 in. (149.86 mm). . . . . . . . . . . . . . . .

Width

All Models 1.20 in. (30.48 mm). . . . . . . . . . . . . . . . .

Length

Models 235627, 235628, 243775

and 237607 8.05 in. (204.47 mm). . . . . . . . . . .

Model 237649 8.90 in. (226.06 mm). . . . . . . . . . . . .

flanged nozzle

Model 235628

Fluid Section 17–4 PH Stainless Steel. . . . . . .

Fluid Tube 300 Series Stainless Steel. . . . . . . .

Valve Needle Carbide and 17–4 PH. . . . . . . . .

Stainless Steel

Valve Seat Carbide and 17–4 PH. . . . . . . . . . .

Stainless Steel Other Stainless Steel, fluoroelastomer, PTFE. ;CV75,

and Polyurethane

Model 243775

Fluid Section 17–4 PH Stainless Steel. . . . . . .

Fluid Tube 300 Series Stainless Steel. . . . . . . .

Valve Needle Carbide and 17–4 PH. . . . . . . . .

Stainless Steel Valve Seat Carbide and 17–4 PH

Other Stainless Steel, fluoroelastomer, PTFE,

Model 237607

Fluid Section Aluminum. . . . . . . . . . . . . . . . . . .

Fluid Tube 300 Series Stainless Steel. . . . . . . .

Valve Needle Carbide and 17-4 PH . . . . . . . . .

Valve Seat Carbide and 17-4 PH . . . . . . . . . . .

Other 316 Stainless Steel, fluoroelastomer,. . .

. . . . . . . . . . .

Stainless Steel

and Polyurethane

Stainless Steel

and Polyurethane

Weight

Model 235627 15.45 oz. (439 g). . . . . . . . . . . . . . . .

Model 235628 and 243775 22.70 oz. (636 g). . . . .

Model 237607 15.45 oz. (439 g). . . . . . . . . . . . . . . .

Model 237649 17.00 oz. (483 g). . . . . . . . . . . . . . . .

Wetted Parts

Model 235627

Fluid Section Aluminum. . . . . . . . . . . . . . . . . . .

Fluid Tube 300 Series Stainless Steel. . . . . . . .

Valve Needle 17-4 PH Stainless Steel. . . . . . .

Valve Seat 17-4 PH Stainless Steel. . . . . . . . .

Other 316 Stainless Steel, fluoroelastomer,. . .

Model 237649

Fluid Section Aluminum. . . . . . . . . . . . . . . . . . .

Fluid Tube 300 Series Stainless Steel. . . . . . . .

Valve Needle Carbide and 17-4 PH . . . . . . . . .

Stainless Steel

Valve Seat Carbide and 17-4 PH . . . . . . . . . . .

300 Series Stainless Steel

Swivel Inlet Fitting 303 Stainless Steel, and. . .

Ultra High Molecular Weight Polyethylene

Other 316 Stainless Steel, fluoroelastomer,. . .

and Polyurethane

4 308253

Installation

Ground the System

WARNING

FIRE AND EXPLOSION HAZARD

To reduce the risk of a fire, explosion, and serious injury, proper electrical grounding of every part of your system is essential. Read the warning section, FIRE AND EXPLOSION HAZARD, on page 3 and follow the grounding instructions below.

The following grounding instructions are minimum requirements for a basic dispensing system. Your system may include other equipment or objects which must be grounded. Check your local electrical code for detailed grounding instructions for your area and type of equipment. Your system must be connected to a true earth ground.

1. Pump: ground the pump by connecting a ground wire and clamp as described in your separate pump instruction manual.

3. Fluid hoses: use only grounded fluid hoses with a maximum of 500 feet (150 m) combined hose length to ensure grounding continuity. Check the electrical resistance of your fluid hoses at least once a week. If your hose does not have a tag on it which specifies the maximum electrical resistance, contact the hose supplier or manufacturer for the maximum resistance limits. If the hose resistance exceeds the recommended limits, replace it immediately.

4. Flo-gun: ground the gun by connecting it to a properly grounded fluid hose and pump.

5. Fluid supply container: ground according to the local code.

6. Flammable liquids in the spray area: must be kept in approved, grounded containers. Do not store more than the quantity needed for one shift.

7. All solvent pails used when flushing: ground according to local code. Use only metal pails, which are conductive. Do not place the pail on a non-conductive surface, such as paper or cardboard, which interrupts the grounding continuity.

2. Air compressors and hydraulic power supplies: ground the equipment according to the manufacturer’s recommendations.

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

308253 5

Operation

Pressure Relief Procedure

WARNING

SKIN INJECTION HAZARD

The system pressure must be manually relieved to prevent the system from

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

 are instructed to relieve the pressure,  stop dispensing,  check or service any of the system equipment,  or install or clean the nozzle.

1. Fully release the gun trigger and lock the gun trigger safety by rotating the safety forward. See Fig. 1.

Gun Trigger Safety

WARNING

SKIN INJECTION HAZARD

To prevent accidental triggering of the gun and reduce the risk of a serious

injury, including fluid injection or splashing in the eyes or on skin, lock the gun trigger safety when you stop dispensing.

To lock the gun safety, release the trigger and rotate the safety toward the trigger as shown in Fig. 1.

NOTE: Do not try to force the trigger valve open with the safety engaged. This could result in component failure.

2. Shut off the fluid supply pump.

3. Hold a metal part of the gun firmly to the side of a grounded metal waste container. Unlock the gun trigger safety by rotating the safety backward. See Fig. 2. Trigger the gun to relieve fluid pressure.

4. Fully release the gun trigger and lock the gun trigger safety by rotating the safety forward.

5. Open the pump drain valve to help relieve fluid pressure in the pump, hose, and gun. Triggering the gun to relieve pressure may not be sufficient. Have a container ready to catch the drainage.

6. Leave the drain valve open until you are ready to dispense again.

7. If you think that the gun nozzle or fluid hose is completely clogged or that pressure has not been fully relieved after following the steps above, very slowly loosen the hose end coupling and relieve pressure gradually, then loosen the coupling completely. Clear the nozzle or hose obstruction.

Locked

Fig. 1

To unlock the trigger safety, rotate the safety toward the handle as shown in Fig. 2.

Unlocked

Fig. 2

01610

6 308253

Operation

Dispensing

1. Start the fluid supply pump.

2. The fluid flow rate is controlled at the pump. Adjust the pump pressure to obtain the desired flow rate. It is recommended that you use the lowest pressure necessary to dispense the fluid. The pressure adjustment will depend on the hose length, the viscosity of the fluid, and the gun nozzle size.

3. Unlock the gun trigger safety.

4. Squeeze the trigger in all the way. Fluid flow begins with the slightest pressure on the trigger and stops when the trigger is released.

NOTE: Periodically inspect the vent in the gun handle for fluid buildup which could indicate an internal leak. See Fig. 3. Service the fluid tube and o-ring as needed.

Flushing Safety

WARNING

FIRE AND EXPLOSION HAZARD

To reduce the risk of a fire, explosion, or serious injury,

 Be sure the entire system and flush-

ing pails are properly grounded before flushing the gun or system.

Read Grounding the System, on page 5.

 Use the lowest possible fluid pressure and

maintain firm metal-to-metal contact between the gun and the grounded metal pail during flushing.

Fig. 3

Vent

01807A

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