Graco PR70 Series Manual

3A3229B

Kit Instructions

PR70™Solenoid Valve

Upgrade Kit

For replacing the air cylinder solenoid valve on all PR70 fixed or variable ratio systems

that meter, mix, and dispense two-component materials. For professional use only.

Part No. 17J520

100 psi (0.7 MPa, 7 bar) Maximum Air Inlet Pressure

Important Safety Instructions

Read all warnings and instructions in this manual

and in PR70™and PR70v™with Advanced Display

Module Operation and Maintenance Manual

312759. Save all instructions.

Related Manuals

23A3229B

Contents

Related Manuals . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Kit 17J520 Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Pressure Relief Procedure . . . . . . . . . . . . . . . . . 4

Access the Valve Assembly . . . . . . . . . . . . . . . . 4

Replace the Solenoid Valve . . . . . . . . . . . . . . . . 5

Replace the Cable Harness . . . . . . . . . . . . . . . . 6

Related Manuals

Overview

These instructions are for upgrading the air cylinder

solenoid valve on all models of PR70 fixed or variable

ratio systems. The new solenoid valve, part #17K155,

included in this kit replaces part #120899. This kit

17J520 should be ordered if part #120899 fails and

needs to be replaced.

Important features of this upgrade kit include:

• It retains the existing dispense valve.

• The solenoid valve and dispense valve are

mounted to the air cylinder vertically instead of

horizontally.

• The cable harness included in the kit now has 4

cables instead of 3. The retract and extend sig-

nals have been split into separate cables. They

were combined into one cable previously.

Contact Graco Ohio Technical Assistance at

800-746-1339 or Ohio[email protected] for additional

information or assistance with this upgrade kit.

PR70 Operation and Parts Manuals

Part Description

312759 PR70 and PR70v with Advanced Display

Module Operation and Maintenance Manual

312760 PR70 and PR70v Repair and Parts Manual

312394 PR70 and PR70v Feed Systems Manual

312761 PR70v Integrated Heat Instructions - Parts

Manual

Kit 17J520 Parts

3A3229B 3

Kit 17J520 Parts

* Not Shown.

FIG. 1: Parts in Valve Upgrade Kit 17J520

Ref Part Description Quantity

1 17D916 BRACKET, shelf 1

2 128266 SCREW, cap, socket head, 4-40 4

4 128538 CABLE, gca, pr70 1

5 61/2906-BK/11* HOSE, .245 id x .375 od, pu, 95 dur 2 ft

6 C27076 NUT 4

7 128170 SCREW, hex, head, m4 x .7 x 10 mm 2

8 17K155 VALVE, solenoid, 3 way 1

Installation

43A3229B

Installation

Shutdown

Perform the following steps to shut down the machine

before proceeding with installation of this upgrade kit.

1. Place a waste container below the dispense valve.

2. Perform the Pressure Relief Procedure to relieve

pressure to the PR70.

3. Unplug the power cord.

Pressure Relief Procedure

1. At the Home screen on the Advanced Display Mod-

ule (ADM), press to access Setup mode. Use

the directional keypad to navigate to the Manual

screen.

2. Press the Open Dispense Valve key on the

Manual screen to relieve chemical pressure.

3. Press the Machine Disable Mode key.

4. Press down the system air pressure relief switch to

stop the air supply and to vent air pressure in the

machine. It is the yellow tab at the left, rear of the

PR70. The hole in the tab should be visible.

5. If necessary, run a lock through the hole to lock the

tab in place. This prevents the system air pressure

from being inadvertently enabled.

Access the Valve Assembly

1. Turn the shield locking screws counterclockwise on

both sides to remove the screws.

2. Remove the protective shield.

NOTE: The solenoid valve assembly is located at the

rear of the PR70 and the Fluid Control Module (FCM) is

located above it.

WARNING

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.

MOVING PARTS HAZARD

Moving parts can pinch, cut or amputate fingers, and other

body parts.

PERSONAL PROTECTIVE EQUIPMENT

Wear appropriate equipment when in the work area to help

prevent serious injury.

The PR70 equipment stays pressurized until pressure

is manually relieved. To help prevent serious injury

from toxic fumes and moving parts, follow the Pres-

sure Relief Procedure before servicing or making

repairs to the PR70.

FIG. 2: Removing the Shield

FIG. 3: Original Assembly

Shield Locking Screw

Solenoid Valve Assembly

Fluid Control

Module

Installation

3A3229B 5

Replace the Solenoid Valve

1. Remove the three socket head screws holding the

air cylinder solenoid valve and the dispense sole-

noid valve.

2. Remove the two valves from the cylinder end block.

3. Disconnect all air line tubes from the air cylinder

solenoid valve.

4. At the dispense solenoid valve, disconnect only the

1/4 in. air line tube from the air manifold as shown in

Figure 4.

5. The cable harness running from the FCM has three

cables. Disconnect the two 3-pin square cables

from both valves using a Phillips screwdriver to

loosen the screws before removing the connectors.

6. Disconnect the third cable from the Linear Variable

Differential Transformer (LVDT) cable. See Figure

10 on page 7 for the location of the LVDT.

NOTE: Discard the air cylinder solenoid valve as the

new valve (part #17K155) replaces it. The original dis-

pense solenoid valve will be installed along with the new

air cylinder solenoid valve.

NOTE: The air cylinder solenoid valve and dispense

solenoid valve need to be installed vertically instead of

horizontally on the cylinder end block. This requires the

use of the bracket (part #17D916) included in the valve

replacement kit.

7. Use the two hex screws (part# 128170) included

with the kit to attach the bracket to the air cylinder

end block as shown in Figure 5.

NOTE: After the bracket is attached to the air cylinder,

the valves are attached to the bracket. The dispense

solenoid valve that was removed is again placed on the

inside and the new air cylinder solenoid valve is on the

outside.

8. As shown in Figure 6, attach both valves to the

bracket using the four socket head screws (part

#128266) and nuts (part #C27076) included in the

kit. For an additional view of the orientation of the

valves, see Figure 1 on page 3.

NOTICE

Do NOT disconnect the two 1/4 inch air lines at the

dispense solenoid valve that open and close the dis-

pense valve. Reconnecting these air lines incorrectly

could damage the machine.

FIG. 4: Dispense Solenoid Valve

Disconnect

Do not Disconnect

FIG. 5: Attaching the Bracket

FIG. 6: Attaching the Valves to the Bracket

Use these Two Holes to Mount the Bracket

Insert Screws Here

Installation

63A3229B

9. Cut the air line tubing (part #61/2906-BK/11)

included in the kit to the appropriate lengths to make

the retract and extend air cylinder connections.

Refer to Figure 7 below.

10. Connect the air line tubing from the air cylinder

retract elbow fitting to the solenoid valve retract

elbow fitting.

11. Connect the air line tubing from the air cylinder

extend elbow fitting to the solenoid valve extend

elbow fitting.

12. Reconnect all other air lines to the dispense sole-

noid valve and the air cylinder solenoid valve.

Replace the Cable Harness

1. Remove the existing cable harness that is con-

nected to the FCM. See Figure 3 on page 4.

2. Connect the new cable harness (part #128538) to

the FCM at port 5. The harness must be angled 45

degrees to connect, as shown in Figure 8.

3. The cables are marked 1 through 4. Make the con-

nections as shown below.

NOTE: In Figure 9, the air line tubing has been removed

from the drawing to clearly show where the cables con-

nect.

FIG. 7: Attaching the Air Line Tubing

Retract

Extend

FIG. 8: Connecting the Cable Harness to the FCM

Cable Number Connection

1Retract

2 Dispense Valve

3 Extend

4 Linear Position (to LVDT)

FIG. 9: Connecting the Cables to the Valves

567

1 - Retract

3 - Extend

2 - Dispense Valve

Installation

3A3229B 7

4. When you have fastened the three cables to the

valves, use a Phillips screwdriver to tighten the

screws and secure the connectors.

5. Connect cable 4 to the cable running from the

LVDT.

NOTE: Figure 10 is a top view of a PR70 with the shield

and several components removed to show the location

of the LVDT.

NOTE: Once all parts and air lines are securely fas-

tened, replace the protective shield and insert and

tighten the shield locking screws before connecting

power and turning on air to the machine.

FIG. 10: Connecting to the LVDT

LVDT

4 - Linear

Position

All written and visual data contained in this document reflects the latest product information available at the time of publication.

Graco reserves the right to make changes at any time without notice.

Original instructions. This manual contains English. MM 3A3229

Graco Headquarters: Minneapolis

International Offices: Belgium, China, Japan, Korea

GRACO INC. AND SUBSIDIARIES • P.O. BOX 1441 • MINNEAPOLIS MN 55440-1441 • USA

www.graco.com

Revision B, February 2017

Graco Information

Sealant and Adhesive Dispensing Equipment

For the latest information about Graco products, visit www.graco.com.

For patent information, see www.graco.com/patents.

TO PLACE AN ORDER, contact your Graco distributor, go to www.graco.com and select

“Where to Buy” in the top blue bar, or call to find the nearest distributor.

If calling from the US: 800-746-1334

If calling from outside the US: 0-1-330-966-3000

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