Graco Inc 308287 User Manual

INSTRUCTIONS-PARTS

LIST

308–287

This warnings and information. READ AND KEEP FOR REFERENCE.

INSTRUCTIONS

PRO

manual contains important

Pulse

First

choice when

quality counts.

Supersedes Rev. B



and PCN C

Electronic Volumetric Flow Meter

For use with Plural Component Precision Mixing Systems This meter is designed to be used in a Class I, Group D hazardous environment

2800 psi (19.6 MPa, 196 bar) Maximum Working Fluid Pressure 50 psi (350 kPa, 3.5 bar) Maximum Working AirPressure

Part No. 235–402, Series A

Flow

Meter with 0.1 cc per tooth fluid volume flow

Rev. C

Model 235–403, Series A

Flow

Meter with 0.4 cc per tooth fluid volume flow

NOTE:

Optic Cables and to order the Fluid Manifold.

U.S.

See the

and Foreign Patents Pending

Accessories

section to order Fiber

01847

GRACO INC. P.O. BOX 1441

COPYRIGHT

Graco

Inc. is registered to I.S. EN ISO 9001

MINNEAPOLIS, MN

1993, GRACO INC.

55440–1441

Table

of Contents

Symbols

Warnings 2. Installation 4 Operation 6 Maintenance 7 Troubleshooting 8 Service 9 Parts 11 Dimensions 15 Technical Warranty 16 Graco

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Data

Phone Number

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15.

16.

WARNING

INJECTION HAZARD

Spray

from hose leaks or ruptured components can inject fluid into your body and cause an extremely serious injury cause a serious injury



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

cal attention.

, including the need for amputation. Splashing fluid in the eyes or on the skin can also

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 corresponding instructions.



Do not stop or deflect fluid leaks with your hand, body



Follow the sure; stop operation, or clean, check, or service the equipment; and install or clean the spray tip.

 T

ighten all the fluid connections before operating the equipment.



Check the hoses, tubes, and couplings daily Permanently coupled hoses cannot be repaired; replace the entire hose.

Pressure Relief Procedure

on page 6 whenever you: are instructed to relieve pres

. Replace worn, damaged, or loose parts immediately

, glove, or rag.

FIRE, EXPLOSION, AND ELECTRIC SHOCK HAZARD

 This  The meter’



equipment must only be installed by trained and qualified personnel.

s electrical chassis must be properly grounded. See

on page 5. Do not allow water or other liquids to spill on the electrical chassis. Do not immerse the chassis in fluids. The air line to the electrical chassis must be turned OFF and the pressure relieved before servicing

or flushing the meter

Check the Electrical Grounding

 308–287

WARNING

EQUIPMENT MISUSE HAZARD

INSTRUCTIONS

Equipment 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

Do not exceed the maximum working pressure of the lowest rated system component. This equip ment has a

Use fluids that are compatible with the equipment wetted parts. See the Technical Data all the equipment manuals. Read the fluid manufacturer’s warnings.

Route the hoses away from traffic areas, sharp edges, moving parts, and hot surfaces. Do not expose Graco hoses to temperatures above 180

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

misuse can cause the equipment to rupture, malfunction, or start unexpectedly and result

. Repair or replace worn or damaged parts immediately

2800 psi (19.6 MPa, 196 bar) maximum working pressure.

_F (82_

C) or below –40

_F (–40_C).

section of

3308–287

Installation

KEY

A Air

Supply Line

B Bleed-T

C D E F Pump G H J K L M Pendant N P R 1 S Controller

ype Air Supply Line

Shut-of

f V

alve Air Line Filter Air Line Lubricator Air Line Regulator

Fiber Optic Cable Flow Meter Fluid Supply Line Fluid Supply Main Power Switch

Pump Grounding Wire Fluid Manifold

15V 60 Hz Electrical Supply

(required)

CD E

CDE

(required)

R S

NON-HAZARDOUS

HAZARDOUS AREA

AREA

The PRO Pulse V

olumetric Flow Meter is designed to detect the pulses induced on a magnetic sensor each time a gear tooth passes by the sensor

. A specific volume of fluid flows through the meter with each gear tooth rotation. See the front cover for the specific fluid volume flow of your meter

Installing the System

WARNING

help reduce the risk of serious injury splashing in the eyes or on the skin, the bleed-type air shut-of

f valve (B1) must be installed in the system to relieve air trapped between this valve and the pump after the air is shut of can cause the pump to cycle unexpectedly the valve close to the pump.

4 308–287

, including

f. T

rapped air

. Locate

The T

ypical Installation shown above is only a guide

for selecting and installing the flow meter

. For assis

01848

tance in designing a particular type and size system for your application, contact your Graco representative.

Install the air line accessories in the order shown in the T

ypical Installation, using adapters as necessary

Connect the air line to the Flow Meter by pressing the front ferrule (D) and back ferrule (C) onto the tubing (A). See Fig. 1. Press the assembly into the fitting (E) and tighten the nut (A). Connect the fiber optic cables by pressing the front ferrule (L) and back ferrule (K) onto the cable (G).

The maximum fiver optic cable length is 100 ft (30.5 m) with two splices. See

Accessories

on page 14 to

order cables.

Installation

KEY

A Tubing, B C D E F G H J K L

1/4” OD Nut (nylon) Ferrule, back (nylon) Ferrule, front (nylon) Air Inlet Fitting Electrical Chassis Fiber Optic Cables Gear Housing Assy Nut (aluminum) Ferrule, back (aluminum) Ferrule, front (aluminum)

Fig. 1

Check the Electrical Grounding

Fiber

Optic

Sender

Fiber Sender

Optic

Power Indicator Light

(Yellow)

Flow

Indicator

Light

(Green)

01849

Electrical

Chassis

WARNING

Proper

electrical grounding of your system is essential when used with flammable or combustible liquids. For you safety

FIRE, EXPLOSION, AND ELECTRIC SHOCK HAZARD

on page 2.

Have a qualified electrician check the electrical grounding continuity between the flow meter electrical chassis and a true earth ground as shown in Fig. 2. If the resistance is greater than 25 ohms, check the mounting or add a ground strap to the chassis.

, read the warning section

Digital

Voltage

Meter

True Earth Ground

01850

Fig. 2

5308–287

+ 11 hidden pages