Graco Husky 2000 Manuale operativo

Instructions–Parts List

308703G

ENG

Important Safety Instructions

Read all warnings and instructions in this manual.

Save these instructions.

Huskyt750 and Huskyt2000

Surge Suppressors

For control of pressure fluctuations and acceleration loss,

preventing cavitation. For professional use only.

120 psi (0.8 MPa, 8 bar) Maximum Air Input Pressure

120 psi (0.8 MPa, 8 bar) Maximum Fluid Working Pressure

See the Model Numbers on page 12.

Model 239088 Model 239096Model 239095 Model 239126Model 239091

06887 06891 06888 06892 06894

2 308703

Table of Contents

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

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

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

Operation 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Troubleshooting 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Service 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Model Numbers 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Parts Matrix 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Parts Drawings 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Dimensions 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Technical Data 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Graco Standard Warranty 18. . . . . . . . . . . . . . . . . . . . . .

Graco Information 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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

INSTRUCTIONS

EQUIPMENT MISUSE HAZARD

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

DThis equipment is for professional use only.

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

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

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

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

DDo not exceed the maximum working pressure of the lowest rated component in your system. This

equipment has a 120 psi (0.8 MPa, 8 bar) maximum working pressure and 120 psi (0.8 MPa,

8 bar) maximum incoming air pressure.

DSolvent Compatibility:

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

– Use only compatible solvents to clean all plastic parts. Many solvents can degrade plastic

parts to the point where they could fail.

Refer to the Technical Data section of all equipment manuals. Read the fluid and solvent

manufacturer’s warnings.

DDo not use hoses to pull equipment.

DDo not lift pressurized equipment.

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

DDo not operate outside the minimum and maximum operating temperature of your surge

suppressor unit. See Minimum and Maximum Operating Temperatures on page 7.

308703 3

WARNING

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.

DKnow the specific hazards of the fluid you are using.

DStore hazardous fluid in an approved container. Dispose of hazardous fluid according to all local,

state and national guidelines.

DAlways wear protective eyewear, gloves, clothing and respirator as recommended by the fluid and

solvent manufacturer.

DPipe and dispose of the exhaust air safely, away from people, animals, and food handling areas. If

the diaphragm fails, the fluid is exhausted along with the air.

DNever use an acetal pump to pump acids. Take precautions to avoid acid or acid fumes from

contacting the pump housing exterior. Stainless steel parts will be damaged by exposure to acid

spills and fumes.

FIRE AND EXPLOSION HAZARD

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

result in a fire or explosion and serious injury.

DCharge the surge suppressor with compressed air or nitrogen only. Do not use oxygen. Such

use could result in an explosion.

DNever pump flammable fluids with polypropylene units.

DGround the equipment. Refer to Grounding on pages 4 and 5.

DNever use a polypropylene pump or surge suppressor with non-conductive flammable fluids as

specified by your local fire protection code. Refer to Grounding on pages 4 and 5 for additional

information. Consult your fluid supplier to determine the conductivity or resistivity of your fluid.

DIf there is any static sparking or you feel an electric shock while using this equipment, stop pump-

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

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

being pumped.

DPipe and dispose of the exhaust air safely, away from all sources of ignition.

DKeep the work area free of debris, including solvent, rags, and gasoline.

DElectrically disconnect all equipment in the work area.

DExtinguish all open flames or pilot lights in the work area.

DDo not smoke in the work area.

DDo not turn on or off any light switch in the work area while operating or if fumes are present.

DDo not operate a gasoline engine in the work area.

4 308703

Installation

Grounding

WARNING

FIRE AND EXPLOSION HAZARD

When pumping flammable fluids, the

surge suppressor must be grounded.

Before pumping, ground the system as

explained below. Also read the section

FIRE OR EXPLOSION HAZARD on

page 3.

Polypropylene surge suppressors are not

conductive. Attaching the ground wire to the

grounding lug grounds only the clamp or flange

(see Fig. 1). When pumping conductive flammable

fluids, always ground the entire fluid system by

making sure the fluid has an electrical path to a

true-earth ground.

To reduce the risk of static sparking, ground the surge

suppressor and all other equipment in the pumping

area. Check your local electrical code for detailed

grounding instructions for your area and type of equip-

ment. Ground all of this equipment:

DSurge suppressor: Attach a ground wire to the

grounding lug (2) as shown in Fig. 1. Connect the

clamp end of the ground wire to a true earth

ground. To order a ground wire and clamp, order

Part No. 222011.

NOTE: To connect the ground wire to the surge

suppressor, first remove the copper connector from

the non-clamp end of the ground wire and discard

it, then push the bare wire through the grounding

lug on the surge suppressor.

DFluid supply container: Follow your local code.

Fig. 1

23 2

NOTE: When pumping conductive flammable fluids

with a surge suppressor, always ground the entire

fluid system. See the WARNING at left. Fig. 2

shows recommended methods of grounding fluid

containers during filling. These are only guides;

contact your Graco distributor for assistance in

grounding your system.

DAir compressor: Follow the manufacturer’s

recommendations.

DSolvent pails used when flushing: Follow your local

code. Use only grounded 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.

308703 5

Installation

A Husky pump

B Husky surge suppressor

H Fluid drain valve (required)

S Dispense valve

T Fluid drain line

W Surge suppressor ground wire (required)

See page 4 for installation instructions.

Y Air motor ground wire (required)

Z Container ground wire (required)

Fig. 2

Grounding a Surge Suppressor

Hose must be conductive.

Dispense valve nozzle must be in

contact with the container.

06895

air supply

connection

06896A

air supply

connection

6 308703

Installation

The installations in Fig. 2 are guides for selecting and installing system components. Contact your Graco distributor

for assistance in planning a system to suit your needs.

Mounting Automatic and Manual Models

Be sure the mounting surface can support the weight of the pump, surge suppressor, hoses, and accessories, and

the stress caused during operation.

DMount the surge suppressor as close to the pump discharge as possible and upstream of equipment such as

valves, meters, filters, and so on. The surge suppressor should be installed within 10 pipe diameters of the

pump discharge.

DIf you use a flexible connector from the pump to the piping system, the surge suppressor should be mounted to

the pump discharge manifold, and the flexible connector should be attached to the surge suppressor tee and

system piping.

DBecause pressure is equal in all directions, the surge suppressor can be installed in any position, but the vertical

position shown in Fig. 2 is recommended for better draining. Fluids with high specific gravity or high viscosity,

settling of heavy material, and possible air entrapment further limit the mounting positions other than those

shown in Fig. 2.

NOTE: When you mount a plastic surge suppressor, do not overtighten by using a large pipe wrench near the

threads of the fluid inlet. The housing may crack if tightened too much. Hand tightening is recommended.

Connecting Automatic Models

DConnect the 1/4-in air supply hose to the 1/4 npt

connection on the top of the surge suppressor.

DThe air pressure to the surge suppressor must be

greater than or equal to the pump discharge and/or

system pressure. For equal air pressure, you can

use a tee in the pump’s air supply line to run an air

line to the surge suppressor.

DFor models with elastomer bladders, the tee must

be located in the pump’s air supply line before any

pump controller or instrumentation such as the

filter, regulator, or pump control valve.

DFor models with PTFE bellows, the tee must be

located in the pump’s air supply line after any pump

controller or instrumentation such as the filter,

regulator, or pump control valve.

Connecting Manual Models

DConnect the 1/4-in air supply hose to the brass

one-way check valve on the top of the surge sup-

pressor.

DThe air pressure to the surge suppressor must be

greater than or equal to the pump discharge and/or

system pressure. For equal air pressure, you can

use a tee in the pump’s air supply line to run an air

line to the surge suppressor.

DThe tee must be located in the pump’s air supply

line before any pump controller or instrumentation

such as the filter, regulator, or pump control valve.

308703 7

Operation

Pressure Relief Procedure

WARNING

PRESSURIZED EQUIPMENT HAZARD

The equipment stays pressurized until pressure is

manually relieved. To reduce the risk of serious

injury from pressurized fluid, accidental spray from

the dispensing device, or splashing fluid, follow this

procedure whenever you

DAre instructed to relieve pressure

DStop pumping

DCheck, clean, or service any system equipment

DInstall or clean fluid nozzles

1. Stop pumping, and shut off the air to the pump.

2. Relieve pressure in the surge suppressor as

follows:

DFor automatic surge suppressors, remove the

air pressure gauge, and allow any residual air

pressure to escape.

DFor manual surge suppressors, adjust the

regulator to relieve the air pressure by dialing

down the pressure.

WARNING

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.

DRead TOXIC FLUID HAZARD on page 3.

DUse fluids and solvents which are compatible

with the equipment wetted parts. Refer to the

Technical Data section of all equipment manu-

als. Read the fluid and solvent manufacturer’s

warnings.

WARNING

FIRE AND EXPLOSION HAZARD

Charge the surge suppressor with

compressed air or nitrogen only. Do not

use oxygen.

Never pump flammable fluids with

polypropylene units.

Charging the surge suppressor with oxygen or

pumping flammable fluids with polypropylene units

could cause a fire or an explosion.

Minimum and Maximum Operating

Temperatures

Find the minimum and maximum operating tempera-

tures for your surge suppressor unit in the list below.

These temperature limits are stated at zero gauge

pressure.

Automatic Husky 750

239095 10_to 180_F (–12_to 82_C)

239096 32_to 175_F (0_to 79_C)

239121 40_to 175_F (4_to 79_C)

239122 32_to 175_F (0_to 79_C)

239123 40_to 220_F (4_to 104_C)

239124 –10_to 350_F (–23_to 176_C)

Automatic Husky 2000

239092 32_to 175_F (0_to 79_C)

239093 32_to 175_F (0_to 79_C)

239126 40_to 175_F (4_to 79_C)

239127 32_to 175_F (0_to 79_C)

239128 40_to 175_F (4_to 79_C)

Manual Husky 750

239090 10_to 180_F (–12_to 82_C)

239091 32_to 175_F (0_to 79_C)

239129 40_to 175_F (4_to 79_C)

239130 32_to 175_F (0_to 79_C)

239131 40_to 220_F (4_to 104_C)

239132 –10_to 350_F (–23_to 176_C)

Manual Husky 2000

239087 32_to 175_F (0_to 79_C)

239088 32_to 175_F (0_to 79_C)

239134 40_to 175_F (4_to 79_C)

239135 32_to 175_F (0_to 79_C)

239136 40_to 175_F (4_to 79_C)

8 308703

Operation

Charging and Startup

For optimum performance, surge suppressors should be charged to a pressure 2 to 10 psi (0.01 to 0.07 MPa,

0.1 to 0.7 bar) lower than system pressure.

Automatic Models

CAUTION

Automatic surge suppressors must have the air

supply connected before you start pumping. Failure

to do so could result in the internal air valve

puncturing or rupturing the bladder.

The air pressure gauge (1) (See Parts Drawings on

pages 14 and 15) on automatic surge suppressors

remains at zero pressure even after the air line is

connected, because the surge suppressor only allows

air into the air chamber when it is required to dampen

pulsation. After the air supply line is attached to the

one-way check valve (8) and air is available, you can

start the pump. No further adjustments are necessary.

NOTE: Automatic surge suppressors are not recom-

mended for use as suction stabilizers at the pump inlet

or as a surge suppressor at a quick-closing valve.

Adjustable surge suppressors should be used for such

applications.

Manual Models

CAUTION

Manual surge suppressors must be charged before

you start pumping. Failure to do so could result in

the internal air valve puncturing or rupturing the

bladder.

Before you start the pump, charge the surge suppres-

sor with air line pressure.

1. Start the pump to generate system pressure.

2. As pressure increases to approach working pres-

sure, gradually decrease the regulated air supply

pressure into the surge suppressor by adjusting

the regulator (4) (See Parts Drawings on pages

14 and 15).

3. Wait for up to one minute to allow the system to

respond to the adjustment before you make any

further adjustments. Generally, pulsation is most

effectively minimized when the air supply to the

surge suppressor is regulated to 2 to 10 psi (0.01

to 0.07 MPa, 0.1 to 0.7 bar) lower than system

pressure.

308703 9

Troubleshooting

WARNING

To reduce the risk of serious injury whenever you

are instructed to relieve pressure, always follow the

Pressure Relief Procedure on page 7.

Relieve the pressure before checking or servicing the

equipment.

Check all possible problems and causes before disas-

sembling the pump.

PROBLEM CAUSE SOLUTION

Surge suppressor does not hold

pressure. Manual or automatic models:

–Leaking threaded connections

–Loose flange bolts or clamp

–Failed bladder or bellows

–Blocked air line to unit

–Check all threads for leaks.

–See Torque Table, page 11.

–See Bladder Failure, page 10.

–Use 1/4-in air line.

Automatic models only:

–One-way valve at air inlet is

installed backwards.

–Gauge shows no pressure,

and pump is not running.

–Arrow should point toward surge

suppressor.

–Pressure does not register on

gauge until pump is started.

Manual models only:

–Faulty regulator –Check regulator.

Dampening effect of surge

suppressor is not sufficient. Surge suppressor installed incorrect

distance from pump Surge suppressor should be

installed within 10 pipe diameters of

pump discharge.

Improper pressure charge See Charging and Startup,

page 8. Surge suppressor

pressure should be 2 to 10 psi (0.01

to 0.07 MPa, 0.1 to 0.7 bar) lower

than system pressure.

Surge suppressor does not hold

pressure charge. See surge suppressor does not hold

pressure in PROBLEM column.

Failed bladder or bellows See Bladder Failure, page 10.

Surge suppressor too small for

pump Install larger surge suppressor.

Automatic models only:

Plugged automatic valve Remove pressure from surge

suppressor, and check automatic

valve for proper operation as

follows:

1. Leave air line attached to top

half of surge suppressor.

2. Fill top of surge suppressor

with enough water to cover

automatic valve.

There should be no bubbles.

3. Dump water out, and gently

push automatic valve.

Air should flow.

4. Replace automatic valve if

it is defective.

There is leaking around surge

suppressor fluid inlet. PTFE sealing tape or paste is

needed on threads of fluid inlet. Apply PTFE tape or paste to

threads. Do not overtighten plastic

models. Hand tightening is

recommended.

10 308703

Service

Bladder Failure

Normal life for bladders can be from a few months to

several years, depending upon the harshness of the

application. Below are common reasons for failed

bladders or bellows:

DChemical attack: Check chemical compatibility

charts. Consult your Graco distributor.

DCut bladder or bellows: Check for sharp objects

that may have been introduced into the surge

suppressor through pumped fluid.

DInsufficient compressed air charge in surge sup-

pressor during operation: See Charging and

Startup on page 8.

DSurge suppressor too small for the pump: An

undersized surge suppressor will have premature

bladder failure. Contact your Graco distributor for

assistance in ensuring that you have the correct

size surge suppressor.

Replacing Bladder or Bellows

1. Relieve the pressure.

WARNING

To reduce the risk of serious injury whenever you

are instructed to relieve pressure, always follow the

Pressure Relief Procedure on page 7.

2. Remove the clamp band, ring flange, or bolts.

3. Remove the top housing of the surge suppressor.

4. Remove the old bladder or bellows, and replace it

with the new bladder or bellows.

Make sure that you properly orient the parts:

DInstall rubber bladders with the concave side

facing the top housing, as shown in the Parts

Drawings on page 14.

DInstall PTFE bellows with the concave side

facing the bottom housing, as shown in Model

No. 239126 in the Parts Drawings on

page 15. Install the PTFE encapsulated fluo-

roelastomer o-rings on each side of the bel-

lows.

5. Replace the top housing of the surge suppressor.

6. Replace the clamp band, ring flange, or bolts, and

torque according to the torque specifications in the

Torque Table on page 11.

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