Graco DynaMite 224906 Operation manual

Instructions – Parts List

GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440–1441

AIR OPERATED, WATERBASE COMPATIBLE

DynaMitetDispense Valves

Maximum Fluid Viscosity: 600,000 Centipose

900 psi (63 bar) Maximum Fluid Working Pressure

100 psi (7 bar) Maximum Air Input Pressure

Model 224906, Series A

Dispense Valve

Model 235877

Dispense Valve with Handle

Patent Pending

Contents

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

Installation 3, 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operation 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Service 7, 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Parts

Model 224906 10. . . . . . . . . . . . . . . . . . . . . . . . . . .

Model 235877 11. . . . . . . . . . . . . . . . . . . . . . . . . . .

Accessories 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Dimensions 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Technical Data 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Graco Warranty 14. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Graco Information 14. . . . . . . . . . . . . . . . . . . . . . . . . .

308266C

Model 224906

01795

01796

Model 235877

Important Safety Instructions

Read all warnings and instructions in this manual.

Save these instructions.

2308266

Symbols

Warning Symbol

WARNING

This symbol alerts you to the possibility of serious

injury or death if you do not follow the instructions.

Caution Symbol

CAUTION

This symbol alerts you to the possibility of damage to

or destruction of equipment if you do not follow the

instructions.

WARNING

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.

DDo not point dispense valve at anyone or at any part of the body.

DDo not put your hand over the end of the dispense nozzle.

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

DFollow 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.

DDo not exceed the maximum working pressure or temperature rating of the lowest rated system

component. See Technical Data in all equipment manuals.

DUse fluids and solvents that are compatible with equipment wetted parts. See Technical Data in all

equipment manuals. Read fluid and solvent manufacturer’s warnings.

DCheck equipment daily. Repair or replace worn or damaged parts immediately.

DDo not alter or modify equipment.

DFor professional use only.

DUse equipment only for its intended purpose. Call your Graco distributor for information.

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

DDo not use hoses to pull equipment.

DComply with all applicable safety regulations.

3308266

Installation

NOTE: Read and understand this entire manual before

operating the Dispense Valve.

NOTE: The dispense valve requires a minimum air

inlet pressure of 40 psi (2.8 bar).

Mounting Accessories

Mounting Stand Kit

Mounting Stand 235270 is available for applications

requiring mounting the valve in a fixed position. The kit

includes instructions. See Accessories on page 12.

Foot Valve Kit

Foot Valve 235830 enables the operator to trigger the

dispense valve with a foot pedal. The kit includes

instructions. See Accessories on page 12.

Handle Kit

Handle Kit 235269 is available to convert Model

224906 Dispense Valve to Model 235877. The kit in-

cludes instructions. See Accessories on page 12.

Installing the Needle Nozzle

NOTE: This dispense valve is supplied with two needle

nozzle sizes (.047 in. and .063 in. I.D.). Other sizes

are available (see page 12).

To install needle nozzles 112000 through 112007,

wrap the threads of the needle nozzle with PTFE tape

and screw the needle nozzle (14) securely into the

housing (12). See Fig. 1.

NOTE: When removing a needle nozzle, hold the

needle nozzle housing (12) with a wrench to keep it

from moving. Using another wrench, remove the

needle nozzle (14) from the housing.

NOTE: Other needle nozzle sizes are available (see

Accessories on page 12). To use these needle

nozzles, you must also purchase Needle Adapter

109599. To install these needle nozzles, wrap the

threads of the 109599 needle adapter with PTFE tape

and screw the adapter securely into the needle nozzle

housing (12). Push the needle nozzle into the adapter

and turn clockwise to lock.

Fig. 1

KEY

12 Needle Nozzle Housing

14 Needle Nozzle

01796

Model 235877 Shown

4308266

Installation

Connecting the Air and Fluid Lines

NOTE: To change the relative positions of the fluid in-

let (C) and air fitting (10 or 106), loosen the valve

housing swivel (11), reposition the fluid inlet, and re-

tighten.

1. Connect the air supply tube (A) to the air inlet fit-

ting (10 or 106) by pushing the tube straight into

the fitting until it seats. To check that the tube is

secure, pull back on it gently, to ensure that it will

not pull out. See Fig. 2.

NOTE: If cutting the tube, cut it at 90_, being careful

not to damage the outer diameter of the tube. Use of a

tube cutter is recommended. The fitting will leak if the

tubing is not cut at 90_.

2. Connect the fluid line (B) to the 1/8 npt(f) fluid inlet

hose ties (E) to fasten the fluid line and air line to-

gether.

NOTE: Fluid Hose Kits are available. See Accesso-

ries on page 12. The kits include a length of hose (B)

and a fluid inlet swivel (D).

Fig. 2

02169

KEY

10 Air Inlet Fitting (Model 224906)

11 Valve Housing (Swivel)

106 Air Inlet Fitting (Model 235877)

A Air Supply Line (not supplied)

B Fluid Supply Line (not supplied)

C Fluid Inlet

D Fluid Inlet Swivel (not supplied)

E Hose Tie (not supplied)

01797

106

Model 235877

(shown with air line and

optional fluid hose kit installed)

Model 224906

(shown with air line and

optional fluid hose kit installed)

5308266

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 serious injury. To reduce the risk of

an injury from injection, splashing fluid, or moving

parts, follow the Pressure Relief Procedure

whenever you:

Dare instructed to relieve the pressure,

Dstop spraying,

Dcheck or service any of the system equipment,

Dor install or clean the spray tips.

1. Shut off the air and fluid supply to the dispense

valve.

2. Point the valve into a pail, and trigger the valve to

relieve pressure.

3. If you suspect that the needle nozzle or hose is

completely clogged or that pressure has not been

fully relieved after following the steps above, very

slowly loosen the needle nozzle or hose end cou-

pling and relieve pressure gradually, then loosen

completely. Now clean the needle nozzle or hose.

6308266

Operation

WARNING

To reduce the risk of overpressurization which can

cause component rupture and serious injury, never

exceed 900 psi (63 bar) fluid pressure or 100 psi

(7 bar) air pressure to the dispense valve.

Starting and Adjusting the Flow

1. Open the air (A) and fluid (B) supply lines to the

dispense valve.

2. Trigger the dispense valve until fluid begins to flow

evenly from the needle nozzle (14) and all air is

expelled from the system. Close the valve to stop

the flow. The valve and fluid line are now primed.

See Fig. 3.

NOTE: When using a foot valve kit (see page 12),

press the foot pedal to trigger the dispense valve, and

release the pedal to stop the flow. On Model 235877

Dispense Valve, press the trigger (G) to open the

valve, and release to stop the flow.

3. To adjust the flow and bead size, make the follow-

ing adjustments in the order given:

a. Adjust the fluid inlet pressure to the valve to

get the desired results.

b. To change the bead width or shot size, or to

adjust for heavier or lighter viscosity fluids,

change to a different size needle nozzle (see

page 12 for available sizes).

c. For finer adjustments, turn the adjustment

knob (6) to the right. To maintain the desired

setting, tighten the lock nut (8).

NOTE: Time-pressure Controller 692018 is available

for precision dispensing of very small quantities of

fluid. See page 12 to order.

Shutdown

1. Always follow the Pressure Relief Procedure on

page 5 whenever you stop dispensing, even for

only a short time.

2. When the dispense valve is not in use, remove the

needle nozzle (14) or place a cork over the tip (see

Fig. 3).

3. Never soak the entire dispense valve in solvent.

Disconnect the fluid section from the air section by

unscrewing the valve housing (11). Soak only the

fluid section (F).

Fig. 3

02273

KEY

6 Adjustment Knob

8 Lock Nut

11 Valve Housing

14 Needle Nozzle

A Air Line

B Fluid Line

F Fluid Section

G Trigger

Model 235877 Shown

1When valve is not in use, disconnect

needle nozzle (14) or place a cork over the tip.

7308266

Service

WARNING

SKIN INJECTION HAZARD

To reduce the risk of serious injury, fol-

low the Pressure Relief Procedure on

page 5 before checking or servicing

any part of the system and whenever you are

instructed to relieve the pressure.

To reduce the risk of a punture wound, hold the

valve securely, and keep your hands away from the

needle nozzle when operating the valve.

Tools Required

DAdjustable Wrenches

DTorque Wrench

D1/4 in. (6 mm) Diameter Rod

DFlat Blade Screwdriver

DO-ring Pick

DPTFE Tape

DMedium Strength Thread Sealant

Disassembly

NOTE: Repair Kit 235272 is available to service the

dispense valve. For the best results, use all the parts

in the kit, even if the old parts look good. Parts in-

cluded in the kit are marked with an asterisk, for exam-

ple (1*).

1. Shut off the fluid supply. Follow the Pressure Re-

lief Procedure on page 5.

2. Disconnect the air and fluid lines to the dispense

valve.

3. Using a wrench on the flats, unscrew the needle

nozzle housing (12) from the valve housing (11).

See Fig. 4.

NOTE: To change the needle nozzle, see page 3.

4. Using a wrench, unscrew the valve housing (11)

from the cylinder (9). Pull the housing away from

the cylinder, being careful not to damage the valve

needle (1) which is attached to the cylinder.

5. Pull the valve seat (13) out of the valve housing

(11). Inspect the seat for wear.

NOTE: The valve seat (13) is reversible.

6. Unscrew the packing retainer (4) from the valve

housing (11) with a flat blade screwdriver. Using an

o-ring pick, remove the u-cup packing (3) from the

housing. Clean the housing in a compatible sol-

vent.

7. Inspect the valve needle (1) for scoring or damage.

If damaged, unscrew it from the cylinder (9).

Reassembly

1. Apply medium strength sealant to the threads of

the valve needle (1*), and screw it into the cylinder

(9) until it bottoms out. Torque to 6–10 in–lb

(0.7–1.1 N.m).

2. Lubricate the PTFE u-cup (3*). Using a 1/4 in. (6

mm) diameter rod, gently work the u-cup into the

valve housing (11) until it seats, with the lips facing

into the housing.

3. Apply medium strength sealant to the threads of

the packing retainer (4*) and screw it into the valve

housing (11) until it bottoms out. Torque to 20–30

in–lb (2.3–3.4 N.m).

4. Orient the air inlet fitting (A) and the fluid inlet (C)

in any position you wish, relative to each other.

Join the cylinder (9) and valve housing (11), care-

fully guiding the needle (1*) into the valve housing

(11) and through the u-cup (3*). Screw the valve

housing (11) onto the cylinder (9), handtight.

5. Insert the valve seat (13*) into the male end of the

valve housing (11) until it bottoms out.

6. Apply medium strength sealant to the threads of

the needle nozzle housing (12) and screw it onto

the valve housing (11). Torque to 20–30 in–lb

(2.3–3.4 N.m).

NOTE: If the needle nozzle (14) was removed from the

housing (12), replace as explained on page 3.

7. Reconnect the air and fluid lines to the dispense

valve.

8308266

Service

Fig. 4

01798

13*

Model 224906 Shown

Apply PTFE tape.

Apply sealant.

Torque to 20–30 in–lb (2.3–3.4 N.m).

Seat is reversible.

Torque to 6–10 in–lb (0.7–1.1 N.m).

Lubricate.

Lips must face into housing (11).

Inspect weep hole for buildup of fluid,

which could indicate a leaking u-cup (3).

2 4

3 7

2 5

2 4

KEY

1 Valve Needle

3 PTFE U-Cup Packing

4 Packing Retainer

6 Adjustment Knob

7 Adjustment Screw

8 Lock Nut

9 Cylinder

11 Valve Housing

12 Needle Nozzle Housing

13 Valve Seat

14 Needle Nozzle

A Air Inlet Fitting (Model 224906 Shown)

C Fluid Inlet

9308266

Notes

10 308266

Parts

Model 224906, Series A

Dispense Valve

Includes items 1–14

Ref Part

No. No. Description Qty

1* 187588 NEEDLE, valve; stainless steel 1

3* 111288 PACKING, u-cup; graphite-filled

PTFE w/stainless steel spring 1

4* 187590 RETAINER, packing; carbon steel 1

5Y188288 LABEL, warning 1

6 111870 KNOB, screw 1

7 111534 SCREW, cap, socket hd;

1/4–28 unf–3a x 1.5 in. (38 mm) long 1

8 100070 NUT, hex; 1/4–28 1

9 187593 CYLINDER, air; stainless steel and

aluminum alloy; buna-N seals 1

10 198171 TUBE FITTING, elbow; 90_;

1/8 npt(m) x 0.156 in. (4 mm) OD tube 1

11 235358 HOUSING, valve, w/swivel nut;

stainless steel wetted section 1

Ref Part

No. No. Description Qty

12 188287 HOUSING, needle nozzle;

stainless steel 1

13* 187587 SEAT, valve; acetal 1

14{112000 NOZZLE, needle; stainless steel;

.047 in. (1.19 mm) ID. 1/8 npt(m) 1

112001 NOZZLE, needle; stainless steel;

.063 in. (1.60 mm) ID; 1/8 npt(m) 1

* These parts are included in Repair Kit 235272, which may

be purchased separately.

{Additional needle nozzle sizes are available as accesso-

ries. See page 12.

YReplacement Warning labels are available at no cost.

01798

13*

14{

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