Graco 24T946 Operation manual

Instructions - Parts
Mortar Spray
Applicators
For air-assisted spraying of high viscosity materials, such as mortars, mastics, or epoxies.
Compatible with solvent borne-materials and solvent flushing. For professional use only.
Model 24T946, Series A
Pole Applicator
Model 24T947, Series A
Flex Applicator
1000 psi (7 MPa, 70 bar) Maximum Working Pressure
150 psi (1.0 MPa, 10 bar) Maximum Air Pressure
Important Safety Instructions
Read all warnings and instructions in this
manual and in all supplied manuals. Save all
instructions.
ti22246a
24T946 shown
332767B
EN

Warnings
2332767B
Contents
Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Component Identification . . . . . . . . . . . . . . . . . . . . 5
Flush Before Using Equipment . . . . . . . . . . . . . . . 6
Pressure Relief Procedure . . . . . . . . . . . . . . . . . . . 6
Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Spraying . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Graco Standard Warranty . . . . . . . . . . . . . . . . . . . 12
Graco Information . . . . . . . . . . . . . . . . . . . . . . . . . 12
Warnings
The following warnings are for the setup, use, grounding, maintenance, and repair of this equipment. The exclama-
tion point symbol alerts you to a general warning and the hazard symbols refer to procedure-specific risks. When
these symbols appear in the body of this manual or on warning labels, refer back to these Warnings. Product-specific
hazard symbols and warnings not covered in this section may appear throughout the body of this manual where
applicable.
WARNING
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. Do not use pail liners unless they
are antistatic or conductive.
•Stop operation immediately if static sparking occurs or you feel a shock.Do not use equipment
until you identify and correct the problem.
• Keep a working fire extinguisher in the work area.
+
SKIN INJECTION HAZARD
High-pressure fluid from dispensing device, hose leaks, or ruptured components will pierce skin. This
may look like just a cut, but it is a serious injury that can result in amputation. Get immediate surgical
treatment.
• Do not point dispensing device at anyone or at any part of the body.
• Do not put your hand over the fluid outlet.
• Do not stop or deflect leaks with your hand, body, glove, or rag.
•FollowthePressure Relief Procedure when you stop dispensing and before cleaning, checking, or
servicing equipment.
• Tighten all fluid connections before operating the equipment.
• Check hoses and couplings daily. Replace worn or damaged parts immediately.

Warnings
332767B 3
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 from distributor or retailer.
• Do not leave the work area while equipment is energized or under pressure.
• Turn off all equipment and follow the Pressure Relief Procedure when equipment is not in use.
• Check equipment daily. Repair or replace worn or damaged parts immediately with genuine manu-
facturer’s replacement parts only.
• Do not alter or modify equipment. Alterations or modifications may void agency approvals and create
safety hazards.
• Make sure all equipment is rated and approved for the environment in which you are using it.
• 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.
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 MSDSs 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.
PERSONAL PROTECTIVE EQUIPMENT
Wear appropriate protective equipment when in the work area to help prevent serious injury, including
eye injury, hearing loss, inhalation of toxic fumes, and burns. This protective equipment includes but is
not limited to:
• Protective eyewear, and hearing protection.
• Respirators, protective clothing, and gloves as recommended by the fluid and solvent manufacturer
PRESSURIZED ALUMINUM PARTS HAZARD
Use of fluids that are incompatible with aluminum in pressurized equipment can cause serious chemical
reaction and equipment rupture. Failure to follow this warning can result in death, serious injury, or prop-
erty damage.
• Do not use 1,1,1-trichloroethane, methylene chloride, other halogenated hydrocarbon solvents or
fluids containing such solvents.
• Many other fluids may contain chemicals that can react with aluminum. Contact your material sup-
plier for compatibility.
SUCTION HAZARD
Powerful suction could cause serious injury.
• Never place hands near the pump fluid inlet when pump is operating or pressurized.
WARNING

Warnings
4332767B
Material Self-ignition
Changing Materials
Grounding
Applicator: ground through connection to a properly
grounded fluid hose and pump.
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 sur-
face, 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/dispense valve firmly to the side of a grounded
metal pail, then trigger the gun/valve.
Some materials may become self-igniting if applied
too thick. Read material manufacturer’s warnings and
material MSDS.
NOTICE
Changing the material types used in your equipment
requires special attention to avoid equipment damage
and downtime.
• When changing materials, flush the equipment
multiple times to ensure it is thoroughly clean.
• Always clean the fluid inlet strainers after flushing.
• Check with your material manufacturer for
chemical compatibility.
• When changing between epoxies and urethanes
or polyureas, disassemble and clean all fluid
components and change hoses.
The equipment must be grounded to reduce the risk
of static sparking. Static sparking can cause fumes to
ignite or explode. Improper grounding can cause
electric shock. Grounding provides an escape wire
for the electric current.

Component Identification
332767B 5
Component Identification
Key:
A Air Assist Air Line
B Air Needle (adjustable position)
C Air Needle Retaining Screw
D Fluid Housing
ETip(Nozzle)
F Rubber Tip Retainer
G Needle Valve for Air Assist Flow Control
H Air Assist Shutoff Ball Valve
J Air Pilot Valve for Remote Pump Operation
F IG . 1
C
D
E
F
B
A
H
G
J

Flush Before Using Equipment
6332767B
Flush Before Using
Equipment
The equipment was tested with lightweight oil, which is
left in the fluid passages to protect parts. To avoid con-
taminating your fluid with oil, flush the equipment with a
compatible solvent before using the equipment. See
Grounding on page 4.
Pressure Relief
Procedure
Follow the Pressure Relief Procedure whenever
you see this symbol.
1. Shut off pump and sprayer.
2. Close applicator air valve.
3. Open applicator fluid ball valve.
Setup
Install Applicator Tip (Nozzle)
NOTE: See Component Identification on page 5 for
part references.
1. Perform Pressure Relief Procedure.
2. Install tip (E) onto fluid housing (F) then install rub-
ber tip retainer over it and secure to fluid housing.
This equipment stays pressurized until pressure is
manually relieved. To help prevent serious injury
from pressurized fluid, such as skin injection,
splashing fluid and moving parts, follow the Pressure
Relief Procedure when you stop spraying and before
cleaning, checking, or servicing the equipment.

Spraying
332767B 7
Spraying
Key:
A Air Assist Air Line
B Air Needle (adjustable position)
C Air Needle Retaining Screw
D Fluid Housing
ETip(Nozzle)
F Rubber Tip Retainer
G Needle Valve for Air Assist Flow Control
H Air Assist Shutoff Ball Valve
J Air Pilot Valve for Remote Pump Operation
General Adjustments
The spray pattern can be adjusted by changing:
•Tip(E)size
•Fluidflow
• Air flow, use needle valve (G)
• Air needle (B) position
Adjust Air Flow: Fully open the air assist valve (H),
while adjusting the needle valve (G) for the minimum air
flow necessary for a good pattern. Air bleeds from the
applicator nozzle whenever the applicator air valve (H)
is open. Close the valve to stop the air flow, if desired.
Otherwise, the air valve can stay open during priming.
Air must be on prior to fluid flow.
Adjust Air Needle (B) position: Ensure the air needle
(B) slightly behind the tip (E).
NOTE: Installing needle (B) too far forward can restrict
or completely block material flow. This can result in the
retainer (F) blowing off. Installing the needle too far back
can raise the pressure behind the fluid enough to blow
the retainer (B) off and can cause dripping.
Air Flow Valve Adjustment
To decrease air flow, turn valve knob (G) clockwise.
To increase air flow, turn valve knob (G) counterclock-
wise.
Check material and thin as needed to maintain the
proper consistency. The material may thicken as it sits
and could slow down application or affect the spray pat-
tern.
Flush and dry applicator thoroughly at the end of each
use. Tips and retainers must be cleaned by hand.
F IG . 2
C
D
E
F
B
A
H
G
J

Spraying
8332767B
Material Flow Adjustments
For a lighter spray pattern, adjust the air needle (B)
closer to the fluid nozzle and/or reduce the fluid flow.
For a heavier spray pattern, adjust the air needle (B) far-
ther back from the fluid tip and/or increase the fluid flow.
NOTE: Withdrawing needle (B) too far can force air
back into fluid hose, stopping material flow.
Spray Techniques
1. Test the spray pattern on cardboard. Hold the appli-
cator 6-18 in. (150-450 mm) from the surface. Use
this spraying distance for most applications.
2. Adjust fluid flow until material flow is adequate.
3. Adjust the applicator air assist needle valve to
achieve a uniform round spray pattern.
4. Consider the size of aggregate in the material and
the coarseness of the spray pattern. Larger nozzles
allow heavier patterns.
5. Overlap each stroke 50%. A circular overlapping
pattern may give the best results, and is obtained by
grasping the flex-head and swinging the head
around as the hose flexes.
When spraying small confined areas use the valve and
knob to make fine adjustments without adjusting the
pump.
Installing Nozzle Retaining Cap
1. Place nozzle retaining cap over top lip of applicator
housing.
2. Insert screwdriver through hole in tab of nozzle
retaining cap.
3. Push screwdriver head against notch on applicator
tip and pry nozzle retaining cap over lip until it snaps
into place.
Material Compatibility
The nylon hose in the Flex Applicator is compatible with
solvents. The rubber gasket in the cam and groove inlet
fitting and the rubber nozzle retainer should be hand
cleaned and dried after each use.
ti14355a
NOTICE
To prevent the seals and rubber tip from swelling, do
not leave solvent in the applicator when not in use.

Spraying
332767B 9

Parts
10 332767B
Parts
24T947 Flex Kit and 24T946 Pole Kit
† Parts included in spare spray head kit 24B956 (purchase sep-
arately).
** Optional nozzle sizes available:
16A443: 3/16 in.
16A444: 1/4 in.
16A448: 1/2 in.
16A449: 9/16 in.
◆Parts included in needle valve kit 206264 (purchase sepa-
rately). When received, unscrew assembly then install in man-
ifold (114).
Orient as shown.
Apply pipe sealant to all non-swiveling pipe threads.
Apply lithium grease.
Turn needle fully counter-clockwise before screwing nut (119) into
block (114).
Hand-tight.
Apply medium strength threadlocker to external threads.
Assemble items 120, 127, 135, and 119 before press fit of items 121
and 120.
Install bracket bolt (137) below handle (136).
1
2
3
4
6
7
8
9
122
113
118
116
136
113
121
119
127, 135
116
114
117
115
104
103
102
101
137
112
111
124
110
105
109
106
108
107
1
1
6
3
7 4
9
9
120
134
Ref Part Description Qty
101 191633 TUBE, coupled, 30 in.
(model 24T946)
1
24T322 TUBE, coupled, flexible, 1 in. ID, nylon core,
23 in. (model 24T947)
1
102 16V985 BRACKET, manifold, air 1
103 113114 NUT, lock 1
104 289874 KIT, repair, coupler 1
104a 16W507 KIT, gasket, nitrile, 6-pack
105† 16A247 HOUSING, head, applicator 1
106a† 16A405 CAP, retaining, nozzle, medium hardness 1
106b† 16A421 CAP, retaining, nozzle, hard 1
107†** 16A445 NOZZLE, applicator, 5/16 in., stainless steel 1
108† 16A446 NOZZLE, applicator, 3/8 in., stainless steel 1
109† 16A447 NOZZLE, applicator, 7/16 in., stainless steel 1
110† 100085 SCREW, thumb 1
111† 190947 NEEDLE, air 1
112† M70895 BUSHING, reducer 1
113 113601 HOSE, air, coupled, 31.5 in. (model 24T946) 1
113377 HOSE, air, coupled, 21.0 in. (model 24T947) 1
114 16V986 MANIFOLD, air 1
115 100840 FITTING, elbow, street 1
116 156971 FITTING, nipple, short 2
117 113329 VALVE, ball, vented, 1/4 in. 1
118 15B565 VALVE, ball 1
119◆--- NUT, packing 1
120◆--- NEEDLE, valve 1
121◆--- KNOB, adjusting 1
122 111235 SCREW, machine, panhead 3
124† 121399 PACKING, o-ring, 012, FX-75 1
127◆157628 PACKING, o-ring, Buna-N 1
133 127311 FITTING, compress, 1/4 npt x 1/4 tube 1
134 169970 FITTING, line air 1
135◆166531 WASHER, non-metallic 1
136 16W587 HANDLE, applicator
(included with model 24T946 only)
1
137 16W588 CLAMP, handle
(included with model 24T946 only)
1
Ref Part Description Qty