Graco 311831E User Manual
Instructions - Parts List
®
High-Flo
Designed for low pressure, high volume circulation of finishing materials.
Do not use for flushing or purging lines with caustics, acids, abrasive line strippers, and
other similar fluids.
Important Safety Instructions
Read all warnings and instructions in this manual.
Save these instructions.
See page 2 for Table of Contents and page 3 for
List of Models, including maximum working
pressures.
Pumps
311831E
Related Manuals
Part No. Description
311238 NXT Air Motor manual
308048 Viscount Hydraulic Motor manual
311832 High-Flo Lower manual
Patent Pending
NXT Air-Powered Pump
shown mounted on 218742
Accessory Pump Stand
(not included)
TI8381a
II 2 G
Contents
Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
NXT Air-Powered Pumps . . . . . . . . . . . . . . . . . . 3
Viscount II Hydraulic-Powered Pumps . . . . . . . . 3
Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Mount the Pump . . . . . . . . . . . . . . . . . . . . . . . . . 6
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Air-Powered Pumps . . . . . . . . . . . . . . . . . . . 7
Hydraulic-Powered Pumps . . . . . . . . . . . . . . 7
All Pumps . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Plumbing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Tri-Clamp Adapters . . . . . . . . . . . . . . . . . . . . . . . 8
Air-Powered Pumps . . . . . . . . . . . . . . . . . . . . . . 9
Hydraulic-Powered Pumps . . . . . . . . . . . . . . . . 10
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Pressure Relief Procedure . . . . . . . . . . . . . . . . 11
Flush Before Using Equipment . . . . . . . . . . . . . 11
Trigger Lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Pump Operation . . . . . . . . . . . . . . . . . . . . . . . . 11
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Preventive Maintenance Schedule . . . . . . . . . . 12
Flushing . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Air Line Filter . . . . . . . . . . . . . . . . . . . . . . . 12
Hydraulic Power Supply Check . . . . . . . . . . 12
Mix Tank Volume . . . . . . . . . . . . . . . . . . . . . 12
Packing Nut Tightness . . . . . . . . . . . . . . . . 12
Excessive Leaking at Throat . . . . . . . . . . . 12
Stop the Pump at the Bottom of Its Stroke . . . . 12
Wetcup Maintenance . . . . . . . . . . . . . . . . . . . . 12
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Disconnect the Lower . . . . . . . . . . . . . . . . . . . . 14
Reconnect the Lower . . . . . . . . . . . . . . . . . . . . . 14
Reassemble the Tie Rods to the Motor . . . . . . . 15
Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
NXT Pumps . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Common Parts . . . . . . . . . . . . . . . . . . . . . . 17
Parts That Vary by Model . . . . . . . . . . . . . . 17
Viscount II Pumps . . . . . . . . . . . . . . . . . . . . . . . 18
Common Parts . . . . . . . . . . . . . . . . . . . . . . 18
Parts That Vary by Model . . . . . . . . . . . . . . 18
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Mounting Stand Hole Layout . . . . . . . . . . . . . . . . 19
Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
NXT Air-Powered Pumps . . . . . . . . . . . . . . . . . . 20
Performance Charts . . . . . . . . . . . . . . . . . . 20
Viscount II 300 Pumps
Models 243742, 243755, & 243756 . . . . . . 22
Performance Charts . . . . . . . . . . . . . . . . . . 22
Viscount II 400 Pumps
Models 243741, 243753, & 243754 . . . . . . 23
Performance Charts . . . . . . . . . . . . . . . . . . 23
Graco Standard Warranty . . . . . . . . . . . . . . . . . . . 24
Graco Information . . . . . . . . . . . . . . . . . . . . . . . . . 24
2 311831E
Models
Models
NXT Air-Powered Pumps
Your model number is marked on the pump identification plate located toward the rear of the air motor. To determine
the model number of your pump from the following matrix, select the six digits which describe your pump. The first
digit is always J for circulation pumps. The remaining five digits define the construction. For example, a circulation
pump with stainless steel construction, a 3.3:1 ratio, low noise exhaust, no communication option, npt fittings, and
Chromex rod and chrome cylinder is model number JS33L1. To order replacement parts, see page 17.
J S33 L1
First
Digit
J
(all
circulation
pumps)
Second
Digit Third and Fourth Digit
Material
C Carbon
Steel
S Stainless
Steel
Motor
Size
33 6500 4000 330 (2.3, 23) L Low
44 6500 3000 440 (2.8, 28) M Low
60 6500 2000 500 (3.4, 34) R Remote none
XX = X.X:1 ratio
Lower
Size
Fluid Pressure
Fifth Digit Sixth Digit
Maximum
psi (MPa, bar) Exhaust
Noise
Noise
S Remote
Communi-
cation Fittings Rod Cylinder
none 1 npt Chromex Chrome
™
DataTrak
DataTrak
3 bspp Chromex Chrome
™
Viscount II Hydraulic-Powered Pumps
Maximum Pump
Working Pressure
Model No. Series
243741 C 400 (2.8, 28) npt CS Chromex Chrome 243732
243742 C 300 (2.1, 21) npt CS Chromex Chrome 243733
243753 C 400 (2.8, 28) npt SST Chromex Chrome 243735
243754 C 400 (2.8, 28) bspp SST Chromex Chrome 243735
243755 C 300 (2.1, 21) npt SST Chromex Chrome 243736
243756 C 300 (2.1, 21) bspp SST Chromex Chrome 243736
psi (MPa, bar)
Connection
Style Material
Rod
Material
Cylinder
Material
High-Flo Lower
(see manual 311832)
311831E 3
Warnings
Warnings
The following warnings are for the setup, use, grounding, maintenance, and repair of this equipment. The exclamation point symbol alerts you to a general warning and the hazard symbol refers to procedure-specific risk. Refer back
to these warnings. Additional, product-specific warnings may be found throughout the body of this manual where
applicable.
WARNING
EQUIPMENT MISUSE HAZARD
Misuse can cause death or serious injury.
• Do not operate the unit when fatigued or under the influence of drugs or alcohol.
• Do not exceed the maximum working pressure or temperature rating of the lowest rated system
component. See Technical Data in all equipment manuals.
• Use fluids and solvents that are compatible with equipment wetted parts. See Technical Data in all
equipment manuals. Read fluid and solvent manufacturer’s warnings. For complete information
about your material, request MSDS forms from distributor or retailer.
• Check equipment daily. Repair or replace worn or damaged parts immediately with genuine manufacturer’s replacement parts only.
• Do not alter or modify equipment.
• Use equipment only for its intended purpose. Call your distributor for information.
• Route hoses and cables away from traffic areas, sharp edges, moving parts, and hot surfaces.
• Do not kink or over bend hoses or use hoses to pull equipment.
• Keep children and animals away from work area.
• Comply with all applicable safety regulations.
FIRE AND EXPLOSION HAZARD
Flammable fumes, such as solvent and paint fumes, in work area can ignite or explode. To help prevent
fire and explosion:
• Use equipment only in well ventilated area.
• Eliminate all ignition sources; such as pilot lights, cigarettes, portable electric lamps, and plastic drop
cloths (potential static arc).
• Keep work area free of debris, including solvent, rags and gasoline.
• Do not plug or unplug power cords, or turn power or light switches on or off when flammable fumes
are present.
• Ground all equipment in the work area. See Grounding instructions.
• Use only grounded hoses.
• Hold gun firmly to side of grounded pail when triggering into pail.
• If there is static sparking or you feel a shock, stop operation immediately. Do not use equipment
until you identify and correct the problem.
• Keep a working fire extinguisher in the work area.
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.
• Read MSDS’s to know the specific hazards of the fluids you are using.
• Store hazardous fluid in approved containers, and dispose of it according to applicable guidelines.
• Always wear impervious gloves when spraying or cleaning equipment.
4 311831E
Warnings
WARNING
MOVING PARTS HAZARD
Moving parts can pinch or amputate fingers and other body parts.
• Keep clear of moving parts.
• Do not operate equipment with protective guards or covers removed.
• Pressurized equipment can start without warning. Before checking, moving, or servicing equipment,
follow the Pressure Relief Procedure in this manual. Disconnect power or air supply.
311831E 5
Installation
Installation
Grounding
The equipment must be grounded. Grounding reduces
the risk of static and electric shock by providing an
escape wire for the electrical current due to static build
up or in the event of a short circuit.
Pump: use a ground wire and clamp. Remove the green
ground screw (Z) from the bottom of the air motor. Insert
the screw through the loop on the end of the ground wire
(Y) and reattach the screw to the air motor. Connect the
ground clamp to a true earth ground. See F
IG. 1.
Fluid supply container: follow local code.
Object being sprayed: follow local code.
Solvent pails used when flushing: follow local code.
Use only conductive metal pails, placed on a grounded
surface. Do not place the pail on a nonconductive surface, such as paper or cardboard, which interrupts
grounding continuity.
To maintain grounding continuity when flushing or
relieving pressure: hold metal part of the spray gun
firmly to the side of a grounded metal pail, then trigger
the gun.
Mount the Pump
See FIG. 3 or FIG. 4 on pages 9 and 10. Mount the pump
in the accessory pump stand (B), Part 218742. Secure
the stand to the floor with M19 (5/8 in.) bolts which
engage at least 152 mm (6 in.) into the concrete floor to
prevent the pump from tipping.
Z Y
TI8250a
FIG. 1
Air and fluid hoses: use only electrically conductive
hoses with a maximum of 500 ft. (150 m) combined
hose length to ensure grounding continuity. Check the
electrical resistance of hoses. If total resistance to
ground exceeds 29 megohms, replace hose immediately.
Air compressor: follow manufacturer’s recommendations.
Hydraulic power supply: follow manufacturer’s recommendations.
Surge tank: use a ground wire and clamp.
Spray gun: ground through a connection to a properly
grounded fluid hose and pump.
6 311831E
Installation
Accessories
Install the following accessories in the order shown in
F
IG. 3 and FIG. 4, using adapters as necessary.
Accessory Air Control Kits are available for the NXT
Air Motor. The kits include a master air valve, air
regulator, and filter. Order the kit separately. Use kit
NXT031 for the derated J_60__ pumps (75 psi
maximum air input pressure). See manual 311239
for more information.
Air-Powered Pumps
For typical installation, see FIG. 3 on page 9.
Air Line
• Bleed-type master air valve (M): required in your
system to relieve air trapped between it and the air
motor when the valve is closed.
Trapped air can cause the pump to cycle unexpectedly,
which could result in serious injury from splashing or
moving parts.
Hydraulic-Powered Pumps
For typical installation, see FIG. 4 on page 10.
Hydraulic Power Supply
CAUTION
The hydraulic power supply must be kept clean at all
times to avoid damage to the motor and hydraulic
power supply.
1. Blow out hydraulic lines with air and flush thoroughly before connection to the motor.
2. Plug hydraulic inlets, outlets, and line ends when
disconnecting them for any reason.
Be sure the power supply can provide sufficient power to
the motor. Be sure the power supply is equipped with a
suction filter to the hydraulic pump.
Hydraulic Supply Line
The hydraulic inlet on the motor is 3/4 in. npt. Use a
minimum 1/2 in. (13 mm) ID hydraulic supply line
(R).
• Supply line shutoff valve (H): isolates the motor
when servicing the system. See F
IG. 4.
Be sure the valve is easily accessible from the pump
and located downstream from the air regulator. Be sure
the air bleed hole points away from the operator.
The air motor is rated to 100 psi (0.7 MPa, 7.0 bar). If
you will apply more than 100 psi (0.7 MPa, 7.0 bar) to
the system, install a safety relief valve between the
bleed-type master air valve and the air motor.
• Pump air regulator (L): to control pump speed and
outlet pressure. Locate close to the pump.
• Air line filter (K): removes harmful dirt and mois-
ture from compressed air supply.
• Second bleed-type air valve (M): isolates air line
accessories for servicing. Locate upstream from all
other air line accessories.
• Hydraulic fluid pressure gauge (J): monitors the
hydraulic oil pressure to the motor to avoid overpressurizing the motor or lower.
• Pressure- and temperature-compensated flow
control valve (K): prevents the motor from running
too fast, which can damage it.
• Pressure reducing valve (L), which has a drain
line (M) running to the return line (S): controls the
hydraulic pressure to the motor.
311831E 7
Installation
Hydraulic Return Line
The hydraulic outlet on the motor is 1 in. npt. Use a
minimum 5/8 in. (16 mm) ID hydraulic return line
(S).
• Return line shutoff valve (N): isolates the motor
when servicing the system.
CAUTION
To avoid damage to the pump, never use the return
line shutoff valve to control the hydraulic flow. Do not
install any flow control devices on the hydraulic return
line.
• Return fluid filter (J): removes residue from the
hydraulic fluid to help keep the system running
smoothly (10 micron size).
All Pumps
Fluid Line
• Fluid filter: with a 60 mesh (250 micron) stainless
steel element to filter particles from the fluid as it
leaves the pump.
Plumbing
The lowers have a 2 in. npt(f) fluid inlet and a 2 in. npt(f)
fluid outlet or a 2 in. bspp(f) and a 2 in. bspp(f) fluid outlet.
Use 2 in. (50 mm) diameter pipe and plumbing. Install a
fluid shutoff valve (D) between each tank and the pump.
When using a stainless steel pump, use stainless steel
plumbing to maintain a corrosion-resistant system.
Tri-Clamp Adapters
Tri-clamp adapters are available which allow sanitary
pipe to be connected to a pump with bspp inlet and outlet. Refer to F
Install a 2 in. tri-clamp gasket (AA) in the groove of the
tri-clamp adapter (BB). Mate the tri-clamp adapter with
the sanitary pipe and secure with two clamps (CC), bolts
(DD), and nuts (EE). Install the bolts in opposite directions.
IG. 2.
• Fluid drain valve (T): required in your system, to
relieve fluid pressure in the hose and gun.
• Fluid shutoff valve (D): shuts off fluid flow.
• Fluid pressure regulator: for more precise adjust-
ment of the fluid pressure.
• Gun or valve: to dispense fluid.
• Fluid line swivel: for easier gun movement.
• Suction kit: enables the pump to draw fluid from a
container.
EE
FIG. 2
AA
BB
1
2
1
1
Customer must supply.
2
Graco adapter 193202. Requires seal 193424.
DD
CC
1
8689a
1
8 311831E
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