Graco 233776 User manual

1:1 RATIO

TRITONR308

Diaphragm Pump

Used to pump waterborne and solvent–based paints and catalysts.

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

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

Part No. 233500 Aluminum Pump, Series D, npt threads

Part No. 233501 Stainless Steel Pump, Series C, npt threads

Part No. 233776 Aluminum Pump, Series C, BSPP threads

Part No. 233777 Stainless Steel, Series C, BSPP threads

U.S. and Foreign Patents Pending

Instructions–Parts List

309303T

Important Safety Instructions

Read all warnings and instructions in this manual.

Save these instructions.

ti1029a

Part No. 233501 Shown

2 309303

Table of Contents

Safety Warnings 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Installation 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operation 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Maintenance 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Troubleshooting 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Service

Remove the Fluid and Side Covers 14. . . . . . . . . . .

Ball Check Repair 16. . . . . . . . . . . . . . . . . . . . . . . . . .

Diaphragm Repair 17. . . . . . . . . . . . . . . . . . . . . . . . . .

Air Valve Repair 18. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Shaft Repair 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Parts 23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Technical Data 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Dimensions 25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Graco Standard Warranty 26. . . . . . . . . . . . . . . . . . . . . .

Graco Information 26. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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.

309303 3

WARNING

INSTRUCTIONS

EQUIPMENT MISUSE HAZARD

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

in a 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. Use only genuine Graco parts and accessories.

Check equipment daily. Repair or replace worn or damaged parts immediately.

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

equipment has a 115 psi (0.8 MPa, 8 bar) maximum working pressure at 115 psi (0.8 MPa, 8

bar) maximum incoming air pressure.

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.

Aluminum pumps only: Never use 1.1.1–trichloroethane, methylene chloride, other halogenated

hydrocarbon solvents or fluids containing such solvents in pressurized aluminum equipment. Such

use could result in a chemical reaction, with the possibility of explosion.

Do not use hoses to pull equipment.

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

Graco hoses to temperatures above 180F (82C) or below –40F (–40C).

Wear hearing protection when operating this equipment.

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

4 309303

WARNING

FIRE AND EXPLOSION HAZARD

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

result in fire or explosion and serious injury.

Ground the equipment. Refer to Grounding on page 7.

If 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.

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

being pumped.

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

Electrically disconnect all equipment in the work area.

Extinguish all open flames or pilot lights in the work area.

Do not smoke in the work area.

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

Do not operate a gasoline engine in the work area.

309303 5

WARNING

PRESSURIZED FLUID HAZARD

Spray from the gun, hose leaks, or ruptured components can splash fluid in the eyes or on the skin

and cause serious injury.

Do not stop or deflect fluid leaks with your hand, glove, or rag.

Follow the Pressure Relief Procedure on page 11 before cleaning, checking, or servicing the

equipment.

Tighten all fluid connections before each use.

Check the hoses, tubes, and couplings daily. Replace parts immediately if worn, damaged, or

loose. Permanently coupled hoses cannot be repaired.

TOXIC FLUID HAZARD

Hazardous fluids or toxic fumes can cause a serious injury or death if splashed in the eyes or on the

skin, swallowed, or inhaled.

Know the specific hazards of the fluid you are using. Read the fluid manufacturer’s warnings.

Store hazardous fluid in an approved container. Dispose of the hazardous fluid according to all

local, state, and national guidelines.

Wear appropriate protective clothing, gloves, eyewear, and respirator.

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

6 309303

Installation

General Information

Fig. 2 shows a wall mounted HVLP spray applica-

tion. It is only a guide for selecting and installing

system components. Contact your Graco distributor

for assistance in planning a system to suit your

needs.

Always use Genuine Graco Parts and Accessories,

available from your Graco distributor. If you supply

your own accessories, be sure they are adequately

sized and pressure rated for your system.

Use a compatible, liquid thread sealant on all male

threads. Tighten all connections firmly to avoid air

or fluid leaks.

NOTE: On all npt threads, tighten to 2–3 turns past

finger tight.

Reference numbers and letters in parentheses refer

to the callouts in the figures and the parts lists on

pages 23–22.

In a spray system, ventilate the spray booth.

Tightening Threaded Fasteners Before

First Use

See the Service section for torque specifications.

After unpacking the pump, and before using it for

the first time, check and retorque all external fas-

teners.

After the first day of operation, retorque the fasten-

ers.

As a general guideline, retorque fasteners every

two months.

WARNING

FIRE AND EXPLOSION HAZARD

To prevent hazardous concentrations of

toxic and/or flammable vapors, spray

only in a properly ventilated spray booth.

Never operate the spray gun unless

ventilation fans are operating.

Check and follow all of the national,

state, and local codes regarding air

exhaust velocity requirements.

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.

1. Read TOXIC FLUID HAZARD on page 5.

2. Use 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.

Mounting the Pump

Mount the pump in a well-ventilated area, with

sufficient clearance on all sides for operator access

and servicing.

Be sure the mounting can support the weight of the

pump, hoses, and accessories, as well as the

stress caused during operation.

The pump may be mounted vertically or horizontal-

ly. Be sure the pump is level in all directions.

Wall, pail, stand, or portable cart mounting kits are

available from Graco. For other mountings, be sure

the pump is adequately secured. The pump has

two mounting holes for 0.35 in. (9 mm) screws. See

the Dimension drawing on page 25.

309303 7

Installation

Grounding

WARNING

FIRE AND EXPLOSION HAZARD

This pump must be grounded. Before

operating the pump, ground the system

as explained below. Also read the sec-

tion FIRE AND EXPLOSION HAZARD

on page 4.

To reduce the risk of static sparking, ground the pump

and all other equipment used or located 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:

Pump: Attach a ground wire (Y) to the pump’s

grounding screw (35) and secure with the screw, as

shown in Fig. 1. Connect the clamp end of the

ground wire to a true earth ground. Order Part No.

238909 Ground Wire and Clamp.

Fig. 1

ti1030b

Air and fluid hoses: Use only electrically conductive

hoses.

Air compressor: Follow the manufacturer’s recom-

mendations.

Solvent pails used when flushing: Follow your local

code. Use only 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.

Fluid supply container: Follow your local code.

8 309303

Installation

Air Line

WARNING

A bleed-type master air valve (B) is required in your

system to relieve air trapped between this valve

and the pump. See Fig. 2. Trapped air can cause

the pump to cycle unexpectedly, which could result

in serious injury, including splashing in the eyes or

on the skin, injury from moving parts, or contamina-

tion from hazardous fluids.

1. Install the air line accessories as shown in Fig. 2.

Mount these accessories on the wall or on a

bracket. Be sure the air line supplying the acces-

sories is electrically conductive.

a. The fluid pressure can be controlled in two

ways, either by controlling the air into the

pump with the air regulator (F) or the fluid out

of the pump with the fluid regulator (H).

b. Locate a bleed-type master air valve (B) close

to the pump, to relieve trapped air. See the

WARNING at left. Locate another air valve (E)

upstream from all air line accessories, to

isolate them during cleaning and repair.

c. Install an air line filter (D) to remove harmful

contaminants such as dirt, moisture, and oil

from the compressed air supply.

2. The air valve does not require lubrication.

3. Install an electrically conductive, flexible air hose

(T). Use a minimum 1/4” (6.3 mm) ID air hose.

Screw an air line quick disconnect coupler (V) onto

the end of the air hose and screw the mating fitting

into the pump air inlet snugly. Do not connect the

coupler to the fitting yet.

309303 9

Installation

KEY

A TRITON 308 Pump

B Bleed-type master air valve

(required for pump)

C Air supply line

D Air line filter

E Air line shutoff valve

F Pump air regulator

G Gun air regulator (used in spray system only)

H Fluid pressure regulator (used in spray

system only)

J Drain/circulation valve

K Drain tube

L Suction tube

M Pump fluid inlet

N Pump fluid outlet

P Fluid hose (shown connected to gun in spray

system)

R Gun air hose (used in spray system only)

S Spray gun (used in spray system only)

T Pump air inlet

U Agitator (used in spray system only)

V Air line quick disconnect

Y Ground wire

ti1007a

Fig. 2

Wall Mount HVLP Spray Installation Shown

ti1020a

10 309303

Installation

Fluid Suction Line

Screw the suction line (L) into the pump inlet (M)

snugly. Use a compatible liquid thread sealant on

connections to prevent air from getting into the fluid

line.

Do not pressure feed this pump.

See the Technical Data on page 24 for maximum

suction lift.

Use an agitator (U) to prevent fluid from settling

out. Part No. 245081 Agitator Kit (accessory) is

available.

Fluid Outlet Line

WARNING

A fluid drain valve (J) is required in your system to

relieve pressure in the hose if it is plugged. See

Fig. 2. The drain valve reduces the risk of serious

injury, including splashing in the eyes or on the

skin, or contamination from hazardous fluids when

relieving pressure. Install the valve close to the

pump fluid outlet. To use the valve as a circulation

valve, connect a tube (K) between the valve and

pail.

CAUTION

Some systems may require installation of a pressure

relief valve at the pump outlet to prevent overpres-

surization and rupture of the pump or hose.

Thermal expansion of fluid in the outlet line can

cause overpressurization. This can occur when using

long fluid lines exposed to sunlight or ambient heat,

or when pumping from a cool to a warm area (for

example, from an underground tank).

Overpressurization can also occur if the pump is

being used to feed fluid to a piston pump, and the

intake valve of the piston pump does not close,

causing fluid to back up in the outlet line.

Use electrically conductive fluid hoses (P). Screw

the fluid fitting into the pump outlet (N) snugly.

Install a fluid regulator (H) at the pump fluid outlet

to control fluid pressure, if desired. See Air Line,

step 1a, for another method of controlling pressure.

Install a fluid drain valve (J) near the fluid outlet.

See the WARNING at left.

Flush the Pump Before First Use

The pump was tested in lightweight oil. If the oil could

contaminate the fluid you are pumping, flush the pump

thoroughly with a compatible solvent. Follow the steps

under Starting and Adjusting the Pump on page 11.

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