Graco Series B Operation manual

307–159

Rev. K

Supersedes Rev. J

INSTRUCTIONS-PARTS

LIST

INSTRUCTIONS

This

manual contains important

warnings and information.

READ AND KEEP FOR REFERENCE.

Viscount

II 4500 Pump

1500 psi (100 bar, 10 MPa) Maximum Hydraulic Input Pressure

4500 psi (310 bar, 31 MPa) Maximum Working Pressure

Model 221–066, Series B

With

Severe-Duty Displacement Pump*

and Quiet Hydraulic Motor

* Severe-Duty displacement pumps have an abrasion

and corrosion-resistant displacement rod and cylinder.

Refer to the T

echnical Data section of the separate pump

manual for “W

etted Parts” information.



GRACO INC. P.O. BOX 1441

MINNEAPOLIS, MN

55440–1441

COPYRIGHT

1975, GRACO INC.

Graco

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

 

Table

of Contents

Warnings 2.

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Installation 5

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operation 8

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Maintenance 10

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Troubleshooting 11

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Service 12

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Parts 13

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Dimensions 14

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Mounting

holes

14.

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Performance

Charts

15.

. . . . . . . . . . . . . . . . . . . . . . . . . .

Technical

Data

15.

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Warranty 16

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Graco

Phone Number

16.

. . . . . . . . . . . . . . . . . . . . . . . . .

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

EQUIPMENT MISUSE HAZARD

Equipment

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

This equipment is for professional use only

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

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

Do not alter or modify this equipment.

Check equipment daily

. Repair or replace worn or damaged parts immediately

Do not exceed the maximum working pressure stated on the equipment or in the

echnical Data

for your equipment. Do not exceed the maximum working pressure of the lowest rated component

in your system.

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

Tech-

nical Data

section of all equipment manuals. Read the fluid and solvent manufacturer

’

s warnings.

Handle hoses carefully

. Do not pull on hoses to move equipment.

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

Graco hoses to temperatures above 66

C (150

F) or below –40

C (–40

_F).

ear hearing protection when operating this equipment.

Do not move or lift pressurized equipment.

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



WARNING

INJECTION HAZARD

Spray

from the gun/valve, leaks or ruptured components can inject fluid into your body and cause ex

tremely serious injury

, including the need for amputation. Fluid splashed 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 medi

cal attention.



Do not point the gun/valve at anyone or at any part of the body



Do not put your hand or fingers over the spray tip/valve nozzle.



Do not stop or deflect leaks with your hand, body

, glove or rag.



Do not “blow back” fluid; this is not an air spray system.



Always have the tip guard and the trigger guard on the gun/valve when spraying/dispensing.



Be sure the gun/valve trigger safety operates before spraying/dispensing.



Lock the gun/valve trigger safety when you stop spraying/dispensing.



Follow the

Pressure Relief Procedure

on page 8 if the spray tip clogs and before cleaning,

checking or servicing the equipment.

T

ighten all 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.

MOVING

ARTS HAZARD

Moving

parts can pinch or amputate your fingers.



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



Before checking or servicing the equipment, follow the

Pressure Relief Procedure

on page 8 to

prevent the equipment from starting unexpectedly

4 307-159

WARNING

FIRE AND EXPLOSION HAZARD

Improper

grounding, poor ventilation, open flames or sparks can cause a hazardous condition and re

sult in a fire or explosion and serious injury



Ground the equipment and the object being sprayed. Refer to

Grounding

on page 5.



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

stop spray-

ing/dispensing immediately

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



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

being sprayed/dispensed.



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



Before operating this equipment, electrically disconnect all equipment in the spray/dispense area.



Before operating this equipment, extinguish all open flames or pilot lights in the spray/dispense

area.



Do not smoke in the spray/dispense area.



Do not turn on or of

f any light switch in the spray/dispense area while spraying/dispensing or while

operating if fumes are present.



Do not operate a gasoline engine in the spray/dispense 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.



Know the specific hazards of the fluid you are using.



Store hazardous fluid in an approved container

. Dispose of hazardous fluid according to all local,

state and national guidelines.



Always wear protective eyewear

, gloves, clothing and respirator as recommended by the fluid and

solvent manufacturer



Installation

General Information

NOTE:

Reference numbers and letters in parentheses

in the text refer to the callouts in the figures and the

parts drawing.

NOTE:

Always use Genuine Graco Parts and Acces

sories, available from your Graco distributor

Grounding

WARNING

FIRE AND EXPLOSION HAZARD

Before operating the pump, ground the

system as explained below

. Also read

the section

FIRE OR EXPLOSION HAZ

ARD

on page 4.

Pump:

use a ground wire and clamp as shown in

Fig. 1. Loosen the grounding lug locknut (W) and

washer (X). Insert one end of a 12 ga (1.5 mm

)

minimum ground wire (Y) into the slot in lug (Z)

and tighten the locknut securely

. Connect the other

end of the wire to a true earth ground. Order part

number 222–01

1 Grounding Clamp and Wire.

Fluid and hydraulic hoses:

use only grounded

hoses with a maximum of 500 ft (150 m) combined

hose length to ensure grounding continuity

Hydraulic Power Supply:

according to manufactur

er’

s recommendations.

Spray gun:

ground through connection to a prop

erly grounded fluid hose and sprayer

Object being sprayed:

follow your local code.

Fluid supply container:

follow your local code.

Solvent pails used when flushing:

follow your local

code. Use only metal pails, which are conductive,

placed on a grounded surface. Do not place the

pail on a nonconductive surface, such as paper or

cardboard, which interrupts the grounding continu

ity.

o maintain grounding continuity when flushing or

relieving pressure

, hold a metal part of the spray

gun firmly to the side of a grounded

metal

pail,

then trigger the gun.

Fig. 1

06431

6 307-159

Installation

Fig. 2

06639

Key

Fluid

Hose to Gun

Fluid Drain V

alve

Suction Hose

Hydraulic Return Line

Hydraulic Return Line Shutof

f V

alve

Pressure Gauge

Flow Control V

alve

Pressure Reducing Valve

Accumulator

Drain Line (from pressure reducing valve)

Hydraulic Supply Line

Hydraulic Power Supply

Ground Wire

Wet-Cup

Drain Line (from motor drip pan)

Check Valve

Hydraulic Supply Line Shutof

f V

alve

Return Line Filter

FH J

Mount

the pump to suit the type of installation planned.

Pump dimensions and mounting hole layout are shown

on page 14.

CAUTION

It is very important to keep the hydraulic supply

system clean at all times. Be sure that all hydraulic

fluid lines are absolutely clean. Blow out the lines

with air and flush thoroughly with solvent before

connecting to the hydraulic motor to avoid introduc

ing harmful contaminants into the motor

Filters

Be sure that your hydraulic power supply is equipped

with a suction filter to the hydraulic pump and a system

return line filter of 10 micron size.

Carefully follow the manufacturer

’

s recommendations

on reservoir and filter cleaning, and periodic changes

of hydraulic fluid. Use only Graco-approved hydraulic

oil.



Installation

Hydraulic Lines

The

motor has a 3/4 npt(f) hydraulic oil supply fitting,

and a 1” npt(f) hydraulic oil return fitting. Usa a mini

mum 1/2 in. ID hydraulic supply line and a minimum

7/8 in. ID, return line.

On the hydraulic supply side (C), install the following

accessories shown in Fig. 2, using adapters as neces

sary.

DA shutoff valve (E)

isolates the pump for service.

DA fluid pressure gauge (F)

to monitor hydraulic oil

pressure to the motor and to avoid overpressurizing

the motor or displacement pump, and

a pressure-

and temperature-compensated flow control

valve (G)

to prevent the motor from running too

fast and possibly damaging itself.

A pressure reducing valve (H), with a drain

line (K)

running directly to the hydraulic return

line (D).

An accumulator (J) to reduce the hammering

fect caused by the motor reversing direction.

DA shutoff valve (E)

isolates the pump for service.

CAUTION

Do not exceed 10 gpm (37.8 liter/minute) volume to

avoid pump stalling.

Operating Temperature

Keep

the hydraulic oil temperature below 130

(54_

C) for maximum pump performance.

Drip Pan

The

hydraulic motor is equipped with a drip pan to

collect any leakage that might occur

. Connect a 1/4 in.

ID drain hose (Q) to the barbed hose fitting on the drip

pan.

Drain

alve

Install

a high pressure fluid drain valve (B) near the

pump outlet to relieve fluid pressure in the displace

ment pump and hose during shutdown. See Fig. 2.

WARNING

The fluid drain valve (B) is required in your system

to help reduce the risk of serious injury

, including

fluid injection and splashing in the eyes or on the

skin if you are adjusting or repairing any part of the

system. T

riggering the gun to relieve pressure may

not be suf

ficient.

Fluid Lines

Connect

a grounded fluid supply line to the 1 in. npt

fluid outlet on the displacement pump.

Attach a suction nose to the 1–1/2 in. npt pump fluid

intake.

8 307-159

Operation

Pressure Relief Procedure

WARNING

INJECTION

HAZARD

Fluid under high pressure can be in

jected through the skin and cause seri

ous injury

. T

o reduce the risk of an injury

from injection, splashing fluid, or moving parts, fol

low the

Pressure Relief Procedure

whenever you:



are instructed to relieve the pressure,



stop spraying/dispensing,



check or service any of the system equipment,



or install or clean the spray tips/nozzles.

Lock the spray gun or dispensing valve trigger

safety latch and any other equipment safety

latches.

Shut of

f the power supply to the hydraulic motor

Unlock the gun/valve trigger safety

, and trigger the

gun into a grounded metal waste container

, holding

a metal part of the gun firmly to the side of the

container until pressure is relieved.

Lock the trigger safety

Open all system drain valves, having a container

ready to catch the drainage.

If you suspect that the spray tip or hose is completely

clogged, or that pressure has not been fully relieved

after following the steps above,

very slowly

loosen the

tip guard retaining nut or hose end coupling and relieve

pressure gradually

, then loosen completely

. Now clear

the tip or hose.

Hydraulic Fluid

Check

the hydraulic fluid level, and add fluid as neces

sary to the fill lines before each use.

Wet-Cup

If the pump is not immersed, fill the displacement

pump wet-cup (P) 1/3 full of Graco Throat Seal Liquid

(TSL) or compatible solvent to prevent fluid from drying

on the displacement rod and damaging the pump

packings. See Fig. 2.

Flushing

Flush the pump before using it for the first time to

remove the light oil which was left in after factory

testing to protect the pump from corrosion. Be sure the

solvent used is compatible with the fluid to be sprayed

and the pump wetted parts shown (see manual

307–728). Flush until clean solvent comes from the

gun, or in a circulating system, flush long enough to

clean the entire system.

WARNING

Be sure the entire system and flushing pails are

properly grounded before flushing. Always use the

lowest possible fluid pressure, and maintain firm

metal to metal contact between the gun and pail to

reduce the risk of static sparking and splashing.

See page 5.

9307-159

Operation

WARNING

COMPONENT RUPTURE HAZARD

o reduce the risk of overpressurizing

your system, which could cause compo

nent rupture and serious injury

never

exceed the specified Maximum Incoming Air Pres

sure to the pump

(see the

echnical Data

page 15).

o prevent overpressurizing the hydraulic motor or

its seals, always shut of

f the supply line valve (S)

first

, then shut of

f the return line valve (E).

Pump Operation

operate the pump, turn on the hydraulic power

supply

. Open the return line shutof

f valve first, then

slowly open the hydraulic supply shutof

f valve. Use the

lowest possible pressure to obtain the desired results.

Higher pressures will increase tip wear and pump

wear.

In a direct supply system, the pump will start when the

gun or valve is opened, and stall when it is closed. In a

circulating system, the pump will operate continuously

until the hydraulic power supply is turned of

WARNING

o reduce the risk of overpressurizing the pump,

which can cause a rupture, fire or explosion and

result in serious injury including fluid injection,

always follow these precautions.

Never exceed 1500 psi (100 bar

, 10 MPa), or 3.3

gpm (12.5 liter/min) hydraulic input to the motor

Never exceed 4500 psi (310 bar

, 3.1 MPa) maxi

mum pump outlet pressure.

CAUTION

Do not allow the hydraulic oil temperature to exceed

130F (54

C). The pump seals will wear faster and

leakage may occur if the pump is operated at higher

oil temperatures.

 

Maintenance

WARNING

o reduce the risk of serious injury whenever you

are instructed to relieve pressure, always follow the

Pressure Relief Procedure

on page 8.

Keep the wet-cup (P) 1/3 filled with Graco Throat Seal

Liquid (TSL)

Check the tightness of the packing nut weekly

. Before

adjusting,

relieve the pressure

. The packing nut

should be tight enough to stop leakage, but no tighter

Overtightening will compress and damage the pack

ings and result in pump leaking. Place a pin in one of

the holes of the packing nut to adjust it.

Carefully monitor the fluid supply

. If the pump empties

the supply container

, air will be drawn into the pump,

causing it to run too fast and to be damaged. If the

pump runs too fast, shut it of

f immediately. Fill the

supply container and prime the pump and hoses to

remove all air

, or flush the pump and hoses with a

compatible solvent and leave it filled with an oil-base

solvent or mineral spirits.

Always flush the pump before the fluid can dry in it.

Always stop the pump at the bottom of its stroke to

prevent the fluid from drying on the displacement rod.

Corrosion Protection for Carbon Steel

WARNING

reduce the risk of serious injury whenever you

are instructed to relieve pressure, always follow the

Pressure Relief Procedure

on page 8.

CAUTION

Water

, or even moist air

, can cause your pump to

corrode. T

o help prevent corrosion, never leave the

pump filled with water or air

. After normal flushing,

flush the pump again with mineral spirits or oil-based

solvent,

relieve the pressure

, and leave the mineral

spirits in the pump.

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