Graco SaniForce 26C799 User manual

3A8816A
EN
Instructions
Hygienic SaniForce®
Automatic Airless
Spray Guns
For use in hygienic spraying applications for automatic airless systems. For professional
use only.
Model 26C799
600 psi (4.1 MPa, 41 bar) Maximum Working Fluid
Pressure
200 psi (1.4 MPa, 14 bar) Maximum Working Air
Pressure
Important Safety Instructions
Read all warnings and instructions in this
manual before using the equipment.
Save these instructions.

2 3A8816A
Contents
Approvals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
General Information . . . . . . . . . . . . . . . . . . . . . . . 5
Typical Installation . . . . . . . . . . . . . . . . . . . . . . . . 5
Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Mount the Equipment . . . . . . . . . . . . . . . . . . . . . 6
Ventilate the Workspace . . . . . . . . . . . . . . . . . . . 6
Install Accessories . . . . . . . . . . . . . . . . . . . . . . . . 7
Flush Before First Use . . . . . . . . . . . . . . . . . . . . . 7
Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Select a Spray Tip . . . . . . . . . . . . . . . . . . . . . . . . 8
Install the Spray Tip . . . . . . . . . . . . . . . . . . . . . . . 8
Adjust the Spray Tip . . . . . . . . . . . . . . . . . . . . . . 8
Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Before Each Use . . . . . . . . . . . . . . . . . . . . . . . . . 9
Pressure Relief Procedure . . . . . . . . . . . . . . . . . . 9
Start and Adjust the Equipment. . . . . . . . . . . . . 10
Shut Down the Equipment. . . . . . . . . . . . . . . . . 11
Flushing and Storage . . . . . . . . . . . . . . . . . . . . . 11
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Establish a Preventive Maintenance Schedule . 12
Clean the Equipment . . . . . . . . . . . . . . . . . . . . . 12
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Repair. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Prepare Equipment for Repair . . . . . . . . . . . . . . 15
Replace the Spray Tip . . . . . . . . . . . . . . . . . . . . 15
Repair the Fluid Section . . . . . . . . . . . . . . . . . . . 16
Repair the Air Piston, Spring, and Seals . . . . . . 17
Recycling and Disposal . . . . . . . . . . . . . . . . . . . . . 17
End of Product Life. . . . . . . . . . . . . . . . . . . . . . . 17
Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Spray Tip Selection Chart . . . . . . . . . . . . . . . . . 19
Kits and Accessories . . . . . . . . . . . . . . . . . . . . . . . 20
Part Kits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Accessory Kits . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Technical Specifications . . . . . . . . . . . . . . . . . . . . 22
California Proposition 65 . . . . . . . . . . . . . . . . . . . . 22
Graco Standard Warranty. . . . . . . . . . . . . . . . . . . . 24
Approvals
Model 26C799 is certified:
II 2 G
Ex h IIA T6 Gb

Warnings
3A8816A 3
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 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
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 Specifications in all equipment manuals.
• Use fluids and solvents that are compatible with equipment wetted parts. See Technical
Specifications in all equipment manuals. Read fluid and solvent manufacturer’s warnings. For
complete information about your material, request Safety Data Sheets (SDSs) 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
manufacturer’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 lines and cables away from traffic areas, sharp edges, moving parts, and hot surfaces.
• Do not kink or over bend lines or use lines to pull equipment.
• Keep children and animals away from work area.
• Comply with all applicable safety regulations.
PRESSURIZED EQUIPMENT HAZARD
Fluid from the equipment, leaks, or ruptured components can splash in the eyes or on skin and cause
serious injury.
• Follow the Pressure Relief Procedure when you stop spraying/dispensing and before cleaning,
checking, or servicing equipment.
• Tighten all fluid connections before operating the equipment.
• Check lines, tubes, and couplings daily. Replace worn or damaged parts immediately.

Warnings
4 3A8816A
FIRE AND EXPLOSION HAZARD
Flammable fumes, such as solvent and paint fumes, in work area can ignite or explode. Paint or
solvent flowing through the equipment can cause static sparking. 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 sparking).
• Ground all equipment in the work area. See Grounding instructions.
• Never spray or flush solvent at high pressure.
• 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.
• Use only grounded fluid and air lines.
• Hold gun firmly to side of grounded pail when triggering into pail. Do not use pail liners unless they
are anti-static 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.
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 Safety Data Sheets (SDSs) 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.
MOVING PARTS HAZARD
Moving parts can pinch, cut or amputate fingers and other body parts.
• Keep clear of moving parts.
• Do not operate equipment with protective guards or covers removed.
• Equipment can start without warning. Before checking, moving, or servicing equipment, follow the
Pressure Relief Procedure and disconnect all power sources.
PERSONAL PROTECTIVE EQUIPMENT
Wear appropriate protective equipment when in the work area to help prevent serious injury, including
eye injury, hearing loss, and inhalation of toxic fumes. 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.
WARNING

Installation
3A8816A 5
Installation
General Information
•A typical installation is shown in FIG. 1. 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.
•Reference numbers and letters in parentheses refer
to the callouts in the figures.
Typical Installation
KEY:
FIG. 1: Typical Installation
A
BB
B
B
C
D
D
G
G
H
J
KM
N
P
R
R
R
S
T
UV
W
Y
E
Z
F
L
12 in.
(305 mm)
AAir line filter
BBall valves
CPump
DHigh pressure fluid filters
ESecond bleed-type air valve
FPump air control (includes pump air regulator)
GFlexible, conductive fluid supply line
HGun air regulator
JNormally closed 3-way air solenoid valve
(required, not supplied)
KHeater (if used)
LTee handle
MFluid filter
NFluid drain valve
P* Automatic spray gun
RAir line
STimer
TTimer switch
UFluid regulator
V* Workpiece
WBleed-type master air valve
YFluid shutoff valve
ZPump ground wire
* Ensure that the tip of the spray gun (P) is 12 in. (305 mm)
away from the surface of the workpiece (V).
NOTE: See Accessory Kits, page 20, for system
components that are available separately (purchase
separately).

Installation
6 3A8816A
Grounding
The following grounding instructions are minimum
requirements for a system. Check your system for other
components that must be grounded. Follow local
codes and regulations. Connect the system to a true
earth ground.
Spray gun: Ground through connection to a properly
grounded fluid line and pump.
Pump: Ground as detailed in your separate pump
manual.
Air and fluid lines: Use only electrically conductive
lines with a maximum of 100 ft (30.5 m) combined line
length to ensure grounding continuity. Check electrical
resistance of lines. If total resistance to ground exceeds
25 megohms, replace line immediately.
Air compressor: Follow manufacturer’s
recommendations.
Fluid supply container: Follow local codes and
regulations.
Object being sprayed: Follow local codes and
regulations.
Solvent pails used when flushing: Follow local codes
and regulations. 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.
Accessories: Follow local codes and regulations.
To 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 actuate
the gun.
Mount the Equipment
1. Ensure that the mounting setup can support the
weight of the spray gun (P), system components,
and accessories, as well as the stress caused
during operation.
2. Mount the spray gun (P) on a rod (AB) with a
diameter of 0.50 in. (12.7 mm). See FIG. 2.
3. Tighten the tee handle (L) to secure the spray gun
(P) in place.
NOTE: Ensure that the tip (22) of the spray gun (P)
is 12 in. (305 mm) away from the surface of the
workpiece (V). See FIG. 2.
NOTE: For ease of operation and service, mount
the spray gun so the spray gun components are
easily accessible.
FIG. 2: Mounting Rod
Ventilate the Workspace
The equipment must be grounded to reduce the risk
of static sparking. Static sparking can cause fumes
to ignite or explode. Grounding provides an escape
wire for the electric current.
To prevent hazardous concentrations of toxic or
flammable vapors, only use the equipment in a
well-ventilated area. Only operate the equipment
when ventilation fans are operating. Follow local
codes and regulations.
P
AB
L
22

Installation
3A8816A 7
Install Accessories
Install the following accessories in the order shown in
FIG. 1, using adapters as necessary.
Install Air Line Accessories
•Bleed-type master air valve (W): Required in your
system to relieve air trapped between the air supply
and the gun when the valve is closed. Locate
upstream from the dispensing point.
•Second bleed-type air valve (E): Required in your
system to relieve air trapped between the air supply
and the pump when the valve is closed.
•Gun air regulator (H): controls air pressure to the
gun.
•Pump air regulator (F): To control pump speed
and outlet pressure. Locate close to the pump.
•Air line filter (A): Removes harmful dirt and
moisture from compressed air supply.
•Air supply: Use a normally closed 3-way air
solenoid valve (J) to control the spray gun (P).
Attach a flexible, conductive air supply line (R) from
the 3-way air solenoid valve (J) to the air inlet
adapter (3). See FIG. 3.
FIG. 3
Install Fluid Line Accessories
•Fluid filter (M): With a 60 mesh (250 micron)
stainless steel element to filter particles from the
fluid as it leaves the pump.
•Fluid drain valve (N): Required in your system to
relieve fluid pressure in the fluid line and gun.
•Fluid shutoff valve (Y): Shuts off fluid flow.
•Fluid pressure regulator (U): For more precise
adjustment of the fluid pressure to the gun.
•Gun (P): To dispense fluid.
•Fluid supply: Connect a flexible, conductive fluid
supply line (G) from the pump to the fluid inlet
housing (9) of the gun. See FIG. 3.
Flush Before First Use
The equipment was tested with water, which is left in
the fluid passages to protect parts. If the fluid being
dispensed could be contaminated by water, flush the
equipment with a compatible solvent before using the
equipment. See Flushing and Storage, page 11.
Trapped air can cause the equipment to actuate
unexpectedly, which could result in serious injury
from splashing fluid or moving parts. Keep fingers
away from moving parts. Keep body parts away from
the spraying end of the equipment.
R
3
P
9

Setup
8 3A8816A
Setup
Select a Spray Tip
A spray tip (22) is not provided with the gun assembly.
Select a spray tip (purchase separately) to install in the
gun. See Spray Tip Selection Chart, page 19.
Install the Spray Tip
1. Follow the Pressure Relief Procedure, page 9.
2. Close all air valves.
3. Unscrew the tip retaining nut (23).
4. Remove the gasket (21).
5. Install the spray tip (22) and gasket (21) inside the
tip retaining nut (23).
6. Securely tighten the tip retaining nut (23) to the
housing (9).
FIG. 4: Spray Tip
Adjust the Spray Tip
Adjust the Spray Pattern
The spray tip position determines the spray direction
and pattern orientation. To adjust the spray pattern
orientation:
1. Loosen the tip retaining nut (23).
2. Orient the slot in the spray tip (22) horizontally for a
horizontal pattern and vertically for a vertical
pattern. See FIG. 5.
3. Tighten the tip retaining nut (23) to secure the tip in
place. See FIG. 4.
Adjust the Spray Coverage
The spray tip orifice size and cut angle determine the
coverage and size of the spray pattern. For more
coverage, install a spray tip with a larger orifice.
1. Select a spray tip. See Spray Tip Selection Chart,
page 19.
2. Replace the spray tip as needed to meet your
coverage and spray pattern requirements. Follow
Replace the Spray Tip, page 15.
To avoid injury from pressurized fluid, do not put your
hand in front of the spray tip when installing,
removing, or adjusting the spray tip.
NO YES
20
21
22
23
9
Vertical Pattern
Horizontal Pattern
FIG. 5: Spray Pattern ti8196a ti8170
NOTICE
To prevent equipment damage, do not increase
pump pressure to increase spray coverage. Instead,
use a larger spray tip.

Operation
3A8816A 9
Operation
Before Each Use
Check the Spray Tip
Before each use, check the spray tip (22) before
operating the equipment:
• Clean the spray tip as needed. See Clean the
Spray Tip, page 13.
• Adjust the spray tip as needed. See Adjust the
Spray Tip, page 8.
• Replace worn or damaged parts as needed.
Tighten Connections
Before each use, check and tighten all air and fluid
connections before operating the equipment. Replace
worn or damaged parts as needed.
Lubricate the Equipment
1. Before each day of operation, lubricate the
exposed portion of the needle (19) and the air
piston (16). Use a lubricant compatible with the
fluid being dispensed.
2. After lubricating, cover the exposed portions or the
needle (19) and air piston (16) with a piece of plastic
to prevent fluid build-up on these parts.
Flush the Equipment
Flush the equipment before each use, before changing
colors, and after operating the equipment.
See Flushing and Storage, page 11.
Pressure Relief Procedure
Follow the Pressure Relief Procedure
whenever you see this symbol.
1. Shut off power to the pump (C).
2. Close the bleed-type air valve (E).
3. Close the fluid shutoff valve (Y).
4. Hold a metal part of the gun firmly to a grounded
metal pail. See FIG. 6.
5. Actuate the gun into a grounded metal waste
container to relieve pressure. See FIG. 6.
FIG. 6
6. Close the bleed-type master air valve (W).
NOTICE
Firmly tighten all fasteners and connections to avoid
air or fluid leaks. Air or fluid leaks may damage
equipment parts.
NOTICE
Do not over-lubricate the equipment. Lubricant could
contaminate your fluid supply or other equipment.
Excessive lubrication can also cause the equipment
to malfunction.
NOTICE
Fluid buildup on equipment parts could damage the
fluid section. To prevent fluid buildup on equipment
parts, cover exposed equipment parts with a piece of
plastic.
This equipment stays pressurized until pressure is
manually relieved. To help prevent serious injury from
pressurized fluid, such as splashing fluid and moving
parts, follow the Pressure Relief Procedure when
you stop spraying and before cleaning, checking, or
servicing the equipment.
AC
23

Operation
10 3A8816A
7. Open all fluid drain valves (N) in the system. Have a
waste container ready to catch drainage. Leave
drain valves open until ready to spray again.
8. If the spray tip or line is clogged, or if the pressure
has not been fully relieved:
a. Very slowly loosen the tip retaining nut (23) or
the fluid line clamp (AC) to gradually relieve
pressure. See FIG. 6.
b. Remove the tip retaining nut (23) or the fluid line
clamp (AC) completely.
c. Clear the obstruction in the line or tip.
Start and Adjust the Equipment
1. Confirm that the equipment is properly grounded.
See Grounding, page 6.
2. Check the spray tip (22) before operating the
equipment. See Check the Spray Tip, page 9.
3. Check and tighten the tip retaining nut (23) before
operating the equipment. Replace worn or
damaged parts as needed.
4. Check and tighten all air and fluid connections
before operating the equipment. Replace worn or
damaged parts as needed.
5. Set the timer (S) so that the gun will start spraying
before meeting the workpiece (V) and stop spraying
just after the workpiece has passed.
6. Set the actuating air to a minimum of 50 psi (325
kPa, 3.4 bar). Do not exceed 200 psi (1.4 MPa,
14 bar)
7. Start the pump. See your separate pump manual.
8. Adjust the pump speed and pressure to modify
atomization.
NOTE: Use the lowest pump speed and pressure
necessary for the desired results. Higher speed or
pressure may not improve the spray pattern and
will cause premature tip wear and pump wear.
NOTE: The spray tip orifice size and angle determine
coverage and pattern. See Adjust the Spray Pattern,
page 8, and Adjust the Spray Coverage, page 8.
To avoid injury from pressurized fluid, such as
splashing fluid and moving parts:
• Do not put your hand in front of the spray tip.
• Keep fingers away from moving parts, such as the
needle (19).
• Do not exceed the maximum fluid pressure rating.
See Technical Specifications, page 22.
NOTICE
Firmly tighten all connections to avoid air or fluid
leaks. Air or fluid leaks may damage equipment
parts.
NOTICE
To prevent equipment damage, do not increase
pump pressure to increase spray coverage. Instead,
use a larger spray tip.