For electrostatic finishing and coating applications in hazardous or non-hazardous
locations, including applications that require heated material, and applications that use
isocyanates, UV coatings, and other moisture-sensitive materials.
For professional use only.
.
Important Safety Instructions
Read all warnings and instructions in this manual.
Save these instructions.
See pages 8 to 13 for model information, including maximum working pressure and approvals.
313255Merkur Heated Spray Packages
3A2495Pro Xp AA Spray Gun
307273Fluid Outlet Filter
309524Viscon HP Heater
306860Back Pressure Regulator
313541DataTrak Kits
™
NXT
Air Motor
Spray Packages
Related Manuals
312798U3
Warnings
WARNINGWARNINGWARNING
WARNING
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, refer ba ck to these Warnings. Product- specific hazard symbols and
warnings not covered in this section may appear throughout the body of this manual where applicable.
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:
•Ground equipment, personnel, object being sprayed, and conductive objects in work area. See
Grounding instructions.
•Only use grounded Graco conductive air supply hoses.
•Use and clean equipment only in well ventilated area.
•Use cleaning solvents with highest possible flash point when flushing or cleaning equipment.
•Always turn the electrostatics off when flushing, cleaning or servicing equipment.
•If there is static sparking or you feel a shock, stop operation immediately. Do not use equipment
until you identify and correct the problem.
•Eliminate all ignition sources; such as pilot lights, cigarettes, portable electric lamps, and plastic drop
cloths (potential static arc).
•Do not plug or unplug power cords or turn lights on or off when flammable fumes are present.
•Keep work area free of debris, including solvent, rags and gasoline.
•Check gun resistance daily.
•Keep a working fire extinguisher in the work area.
SPECIAL CONDITIONS FOR SAFE USE
Equipment must comply with the following conditions to avoid a ha zard ous condition which ca n cause fire
or explosion.
•All label and marking material must be cleaned with a damp cloth (or equivalent).
•The electronic monitoring system is required to be grounded. See Grounding instructions.
ELECTRIC SHOCK HAZARD
This equipment must be grounded. Improper grounding, setup, or usage of th e system can cause electric
shock.
•Turn off air supply before servicing equipment.
•All electrical wiring must be done by a qualified electrician and comply with all local codes and
regulations.
•Do not touch gun electrode when electros ta tics ar e on .
•Do not expose to rain. Store indoors.
4312798U
Warnings
WARNINGWARNINGWARNING
WARNING
SKIN INJECTION HAZARD
High-pressure fluid from gun, 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 spray without tip guard and trigger guard installed.
•Engage trigger lock when not spraying.
•Do not point gun at anyone or at any part of the body.
•Do not put your hand over the spray tip.
•Do not stop or deflect leaks with your hand, body, glove, or rag.
•Follow the Pressure Relief Procedure when you stop spraying 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.
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 Da ta 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 equipm ent
and follow the Pressure Relief Procedure when equipment is not in use.
•Check equipment daily. Repair or replace worn or damaged parts imme diately 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.
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.
•Pressurized equipment can start without warning. Before checking, moving, or servicin g equipment,
follow the Pressure Relief Procedure and disconnect all power sources.
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.
•Always wear chemically impermeable gloves when spraying, dispensing, or cleaning equipment.
312798U5
Warnings
WARNINGWARNINGWARNING
WARNING
PERSONAL PROTECTIVE EQUIPMENT
You must wear appropriate protective equipment when operating, servicing, or when in the operating
area of the equipment to help protect you from serious injury, including eye injury, hearing loss, inhalation of toxic fumes, and burns. This equipment includes but is not limited to:
•Protective eyewear, and hearing pr ot ec tion .
•Respirators, protective clothing, and gloves as recommended by the fluid an d solvent man ufacturer.
6312798U
Important Two-Component Material Information
Important Two-Component Material Information
Isocyanate Conditions
Spraying or dispensing materials containing isocyanates creates potentially harmful mists, vapors, and
atomized particulates.
Read material manufacturer’s warnings and material
MSDS to know specific hazards and precautions
related to isocyanates.
Prevent inhalation of isocyanate mists, vapors, and
atomized particulates by providing sufficient ventilation in the work area. If sufficient ventilation is not
available, a supplied-air respirator is required for
everyone in the work area.
To prevent contact with isocyanates, appropriate per sonal protective equipment, including chemically
impermeable gloves, boots, aprons, and goggles, is
also required for everyone in the work area.
Material Self-ignition
Some materials may become self-igniting if applied
too thickly. Read material manufacturer’s warnings
and material MSDS.
Moisture Sensitivity of
Isocyanates
Isocyanates (ISO) are catalysts used in two component
coatings. ISO will react with moisture (such as humidity)
to form small, hard, abrasive crystals, which become
suspended in the fluid. Eventually a film will form on the
surface and the ISO will begin to gel, increasing in viscosity. If used, this partially cured ISO will reduce performance and the life of all wetted parts.
NOTE: The amount of film formation and rate of crystallization varies depending on the blend of ISO, the
humidity, and the temperature.
To prevent exposing ISO to moisture:
•Always use a sealed container with a desiccant
dryer in the vent, or a nitrogen atmosphere. Never
store ISO in an open container.
•Use moisture-proof hoses specifically designed for
ISO, such as those supplied with your system.
•Never use reclaimed solvents, which may contain
moisture. Always keep solvent containers closed
when not in use.
•Never use solvent on one side if it has been contaminated from the other side.
•Always lubricate threaded parts with ISO pump oil
or grease when reassembling.
Changing Materials
Keep Components A and B
Separate
Cross-contamination can result in cured material in
fluid lines which could cause serious injury or damage equipment. To prevent cross-contamination of
the equipment’s wetted parts, never interchange
component A (isocyanate) and component B (resin)
parts.
312798U7
•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.
•Most materials use ISO on the A side, but some use
ISO on the B side.
Models
Wall mount
ID
Cart mount
ID
ti12326a
ti12327a
Models
Check the identification plate (ID) for the 6-digit part number of your package. Use the following matrix and tables to
define the components of your package. For example, package number G30C76 represents a Merkur package (G),
with a 30:1 ratio pump (30), cart mounting (C), and the components shown for (76) in the table on page 13.
Maximum Inlet Air Pressure: 100 psi (0.7 MPa, 7 bar)
Maximum Fluid Working Pressure: 3000 psi (20.7 MPa, 207 bar
Model
Wall
Mount
G30W83 G30C81 W30CAS1.2 (4.5)
G30W84 G30C82 W30CBS1.2 (4.5)
G30W85 G30C83 W30CAS1.2 (4.5)
G30W86 G30C84 W30CBS1.2 (4.5)
Cart
Mount
Pump
Assembly
Maximum
fluid flow
rate
gpm (lpm)
Heater
Volt
Amp
120V
19.2 Amp
120V
19.2 Amp
240V
16.7 Amp
240V
16.7 Amp
Pump
and Gun
Air
Controls
Gun
Fluid
Hose
)
HosesOptions
Gun Fluid
Whip Hose
Gun
Air
Hose
Gun Air
Whip Hose
Fluid
Filter DataTrak
Siphon
Kit
Fluid
Filter
DataTra
k
Merkur Bellows 35:1 Packages, Ambient (G35Bxx)
Maximum Inlet Air Pressure 100 psi (0.7 MPa, 7 bar)
Maximum Fluid Working Pressure: 3000 psi (20.7 MPa, 207 bar)
Maximum
fluid flow
Pump
Model
G35B33B35DA01.6 (6.0)
G35B34B35DB01.6 (6.0)
Assembly
rate
gpm (lpm)
Pump
and Gun
Air
Controls
Gun
Fluid
Hose
*
*
Gun Fluid
Whip Hose
* Fluid filter includes fluid drain valve.
312798U13
HosesOptions
Gun
Air
Hose
Gun Air
Whip Hose
Siphon
Kit
Fluid
Filter DataTrak
Installation
A
B
C
R
U
V
S
T
J
AA
Z
N
P
F
W
X
K
H
ti12704b
L
AB
Installation
Package components vary. See page 9 to 13 to determine the components included in your model. Items designated
as accessories are not included in the packages.
FIG. 1. Typical Installation, Ambient, Model G30C76 Shown.
Key:
AAir Shutoff Valve (accessory)
BAir Filter (accessory)
CAir Line Moisture Trap and Drain Valve (accessory)
FFluid Filter
HElectrostatic Air-Assisted Spray Gun
JGun Swivel
KFluid Whip Hose
LAir Whip Hose
NSuction Hose and Tube
PStrainer
RPump Grounding Wire
SGun Air Pressure Gauge
TGun Air Pressure Regulator
UBleed-type Master Air Valve (required)
VDataTrak
W Pump Air Pressure Gauge
XPump Air Pressure Regulator
YInsert (for models without DataTrak), see F
ZElectrically Conductive Gun Fluid Hose
AA Electrically Conductive Gun Air Hose
AB Electrostatic Spray Gun Grounding Wire
IG. 2
14312798U
Installation
A
B
C
D
E
F
G
J
H
K
MN
P
R
S
T
U
W
X
V
Y
ti13112a
ti13167c
L
AB
AA
Z
FIG. 2. Typical Installation, Heated, Model G30W86 Shown
Key:
AAir Shutoff Valve (accessory)
BAir Filter (accessory)
CAir Line Moisture Trap and Drain Valve (accessory)
DFluid Heater
EBack Pressure Regulator
FFluid Filter
GFluid Drain Valve
HElectrostatic Air-Assisted Spray Gun
JGun Swivel
KFluid Whip Hose
LAir Whip Hose
M3 Way Valve
NSuction Hose and Tube
PStrainer
RPump Grounding Wire
SGun Air Pressure Gauge
TGun Air Pressure Regulator
UBleed Type Master Air Valve (required)
VDataTrak
W Pump Air Pressure Gauge
XPump Air Pressure Regulator
YInsert (for models without DataTrak)
ZElectrically Conductive Heated Fluid Supply/Return Hose
AA Electrically Conductive Gun Air Hose
AB Electrostatic Spray Gun Grounding Wire
312798U15
Installation
General Information
NOTE: Reference numbers and letters in parentheses
in the text refer to the callouts in the figures and the
parts drawing.
NOTE: 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.
IG. 1 and FIG. 2 are only guides for selecting and
F
installing system components and accessories. Contact
your Graco distributor for assistance in designing a system to suit your particular needs.
Prepare the Operator
All persons who operate the equipment must be trained
in the operation of all system components as well as the
proper handling of all fluids. All operators must thoroughly read all instruction manuals, tags, and labels
before operating the equipment.
Prepare the Site
Ensure that you have an adequate compressed air
supply.
Keep the site clear of any obstacles or debris that could
interfere with the operator's movement.
Have a grounded, metal pail available for use when
flushing the system.
Mount the Pump
Mount the pump directly to the wall or to a Graco cart.
See page 39 for mounting kits.
Wall-Mounted Pumps
1. Be sure the wall can support the weight of the
pump, bracket, hoses and accessories, as well as
the stress caused during operation.
2. Position the wall bracket about 4-5 ft (1.2-1.5 m)
above the floor. For ease of operation and service,
make sure the pump air inlet, fluid inlet, and fluid
outlet ports are easily accessible.
3. Using the wall bracket as a template, drill 0.4 in. (10
mm) mounting holes in the wall. Wall mounting
dimensions are shown on page 43.
4. Attach the bracket to the wall. Use 3/8 in. (9 mm)
screws that are long enough to keep the pump fr om
vibrating during operation.
NOTICE
The compressed air supply to the gun must be
clean and dry, to prevent damage to the finish. Use
a coalescing air filter in the main air supply line.
Bring a compressed air supply line from the air compressor to the pump location. Refer to the performance
charts in your pump assembly manual to find the air
consumption of your pump. Be sure all air hoses are
properly sized and pressure-rated for your system. Use
only electrically conductive hoses. The air hose should
have a 3/8 npt(m) thread. A quick disconnect coupling is
recommended.
Install a bleed-type shutoff valve (A) in the air line to isolate the air line components for servicing. Install an air
line filter (B) and a moisture trap and drain valve (C) to
help remove moisture and contaminants fr om t he com pressed air supply.
NOTE: Be sure the bracket is level.
Cart-Mounted Pumps
Kit 24E885 is available if you plan to bolt your cart to the
floor. It includes two spacers that keep the legs stable.
Bolts not included.
16312798U
Installation
Ventilate the Spray Booth
Provide fresh air ventilation to avoid the buildup of
flammable or toxic vapors. Do not operate the gun
unless ventilation fans are operating.
Electrically interlock the gun air supply with the ventilators to prevent gun operation without ventilating fans
operating. Check and follow all National, State, and
Local codes regarding air exhaust velocity requirements.
NOTICE
High velocity air exhaust will decrease the operating efficiency of the electrostatic system. Air
exhaust velocity of 100 ft/min (31 linear
meters/minute) should be sufficient.
Components
See FIG. 1 or FIG. 2. Components vary by package
ordered. See tables on pages 9 to 13. Your package
may include:
•A fluid filter (F) with a 60 mesh (250 micron) stainless steel element filters particles from fluid as it
leaves the pump.
•DataTrak (V) provides pump diagnostics and material usage information. See page 27.
Supplied with Heated Electrostatic
Packages Only
•The back pressure regulator (E) controls back pressure to the gun and maintains proper circulation
pressure.
•The 3-way valve (M) allows choice to circulate fluid
back to the pump or return it to the supply container.
•A fluid drain valve (G) relieves fluid pressure in the
hose and gun.
•The fluid heater (D) heats the fluid as it passes
through, to maintain the correct spraying viscosity.
Read and understand all instructions in the supplied
heater manual 309524 before operating the heater.
Air and Fluid Hoses
•The red-handled bleed-type master air valve (U) is
required in your system to relieve air trapped
between it and the air motor and gun when the valve
is closed. Do not block access to the valve.
•The pump air regulator (X) controls pump speed
and outlet pressure by adjusting the air pressure to
the pump.
•The air relief valve (not shown) opens automatically
to prevent overpressurization of the pump.
•The gun air regulator (T) adjusts the air pressure to
the electrostatic air-assisted spray gun (H).
•The electrostatic air-assisted spray gun (H) dispenses the fluid. The gun houses the spray tip (not
shown), which is available in a wide range of sizes
for different spray patterns and rates of flow. Refer
to gun manual for tip installation.
•A gun swivel (J) allows freer gun movement.
•The suction hose (N) with strainer (P) allows the
pump to draw fluid from a 5 gallon (19 liter) pail.
Ambient Models
•The red hose (AA) provides the gun air supply.
•The blue hose (Z) provides the gun fluid supply.
Heated Models
•The hose bundle (L) supplies fluid and air to the
gun, and allows recirculation of fluid when the gun is
not triggered.
312798U17
Installation
GSR
ti12914a
AC
Cut off
finger of
glove
Cut out 3 in.
(76 mm) square
from palm of
glove.
Grounding
When operating the electrostatic gun, any
ungrounded objects in the spray area (people, containers, tools, etc.) can become electrically charged.
The equipment must be grounded to reduce the risk
of static sparking and electric shock. Electric or static
sparking can cause fumes to ignite or explode.
Improper grounding can cause electric shock.
Grounding provides an escape wire for the electric
current.
The following are minimum grounding requirements for
a basic electrostatic system. Your system may include
other equipment or objects which must be grounded.
Check your local electrical code for detailed grounding
instructions. Your system must be connecte d to a tr ue
earth ground.
Pump: Verify that the ground screw (G S) is atta ch ed
and tightened securely to the air motor. Connect the
other end of the ground wire (R) to a true earth ground.
Object being sprayed: keep the workpiece hangers
clean and grounded at all times. Follow local code.
All electrically conductive objects or devices in the
spray area, including paint containers, wash cans and
tools, must be properly grounded.
All persons entering
the spray area: shoes
must have conductive
soles, such as leather, or
personal grounding
straps must be worn.
Rubber or plastic soles
are not conductive. The
operator must not wear
gloves that insulate the
hand from the spray gun.
The gloves must be conductive or modified as
shown.
The floor of the spray area must be electrically conductive and grounded. Do not cover the floor with cardboard or any non-conductive material that would
interrupt grounding continuity.
IG. 3. Ground Screw and Wire
F
Electrostatic Air-Assisted Spray Gun: Use only the
Graco Electrically Conductive Air Supply Hose (supplied). Connect the Gun Grounding Wire (AC) to the
ground screw (GS) on the air motor.
Heater: refer to the heater manual, supplied.
Air compressor: follow manufacturer’s recommenda-
tions.
All air and fluid lines must be properly grounded. Use
only grounded hoses with a maximum of 500 feet
(150m) combined hose length to ensure gr ou nd in g con tinuity.
Flammable liquids in the spray area must be kept in
approved, grounded containers. Do not store m ore than
the quantity needed for one shift.
Fluid supply container: follow local code.
All solvent pails: follow local code. Use only conduc-
tive metal pails, placed on a grounded surface. Do not
place the pail on a non-conductive surface, such as
paper or cardboard, which interrupts grounding continuity.
To maintain grounding continuity when flushing or
relieving pressure, always hold a metal part of the spray
gun firmly to the side of a grounded metal pail, then trigger the gun.
All electric cables must be properly grounded.
18312798U
Setup
78
79
80
ti13261a
(120 V only)
Remove
outer two
heater
bracket
screws.
Loosen
inner two
heater
bracket
screws.
ti13358a
Electrical
housing
ti13359a
Installation
Ambient Packages
1. See FIG. 1. Attach the blue fluid hose (Z) to the filter
(F) outlet.
2. Attach the right-hand thread end of the air hose
(AA) to the gun air regulator (T).
3. Attach the left-hand thread end of the air hose (AA)
to the air whip hose (L).
4. Attach other end of the air whip hose (L) to the air
inlet at base of gun.
5. Attach the gun swivel (J) to the gun fluid inlet.
6. Attach other end of the blue fluid hose (Z) to the
fluid whip hose (K).
7. Attach other end of the fluid whip hose (K) to the
gun swivel (J).
8. Apply lens cover to both regulator gauge lenses.
9. Verify that suction hose fittings are tight.
.
FIG. 4. Cart Mount Non-Hazardous Location Wiring
Electrical Housing Access.
Heated Packages
The Viscon HP Heater must be installed by a qualified electrician in compliance with all state and local
codes and regulations.
Wall Mount Electrical Connections. Follow all
directions and requirements in the Viscon HP Heater
manual 309524.
Cart Mount Hazardous Location Wiring. The heater is
shipped with a fitting that is suitable for wiring in
hazardous locations. Follow all directions and
requirements in the Viscon HP Heater manual 309524.
Do not use the supplied electrical cord, which is
suitable only for non-hazardous location wiring.
Cart Mount Non-Hazardous Location Wiring. See
IG. 4. Replace installed fitting with bushing (80),
F
shipped loose. Attach strain relief bushing (79). Follow
all directions in the Viscon HP Heater manual 309524 to
connect the 120 V supplied electrical cord (78), or
user-supplied cord for 240V applications.
Tilt the heater away from the pump for easier access to
the screws on the cover of the electrical housing.
312798U19
Installation
H
K
J
Z
AA
Z
84
68
6
ti13167c
L
T
Heated Hose Connections
1. Attach the right-hand thread end of the air hose
(AA) to the gun air regulator (T).
2. Attach the left-hand thread end of the air hose to the
air whip hose (L).
3. Attach the other end of the air whip hose (L) to the
air inlet at base of the gun.
4. Attach gun swivel (J) to the gun fluid inlet.
5. Attach one end of the fluid whip hose (K) to the gun
swivel and the other end to the manifold (68).
6. Attach one blue fluid hose to the manifold (68) and
to the back pressure regulator (84).
7. Attach the other blue fluid hose to the manifold (68)
and to the filter (6) outlet.
8. Apply lens cover to both regulator gauge lenses.
9. Verify that suction hose fittings and drain hose fittings are tight.
IG. 5. Hose Setup
F
20312798U
Operation
ti12582b
Gun Trigger
Locked
Gun Trigger
Unlocked
ti1356a
ti1406a
Proper electrical grounding of every part of your system is essential. Read all Warnings. Follow all
Grounding instructions. See page 18. Check the gun
resistance as explained in your separate gun ma nual.
Pressure Relief Procedure
1. Engage the trigger lock.
2. Turn the gun’s ES ON/OFF lever to OFF.
Operation
guard retaining nut or hose end coupling to relieve
pressure gradually, then loosen completely. Clear
hose or tip obstruction.
Flush Before Using Equipment
The equipment was tested with lightweight oil, which is
left in the fluid passages to protect parts. To avoid contaminating your fluid with oil, flush the equipment with a
compatible solvent before using the equipmen t. See
Prime the Pump, page 22.
Trigger Lock
Always engage the trigger lock when you stop spraying
to prevent the gun from being triggered accidentally by
hand or if dropped or bumped.
3. Close the bleed-type master air valve.
4. Disengage the trigger lock.
5. Hold a metal part of the gun firmly to a grounded
metal pail. Trigger the gun to relieve pressure.
6. Engage the trigger lock.
7. Open all fluid drain valves in the system, having a
waste container ready to catch drainage. Leave
drain valve(s) open until you are ready to spray
again.
8. If you suspect the spray tip or hose is clogged or
that pressure has not been fully relieved after following the steps above, VERY SLOWLY loosen tip
312798U21
Operation
Wet
Cup
ti11927a
Wet Cup
Before starting, fill wet cup 1/3 full with Graco Throat
Seal Liquid (TSL) or compatible solvent.
FIG. 6. Fill Wet Cup
Prime the Pump
NOTICE
For pumps with bellows, the maximum fluid inlet pressure is 15 psi (0.1 MPa, 1.0 bar). Damage to the bellows may occur if you exceed this pressure. Do not
use another pump or checking device to supp ly the
bellows pump.
7. Hold metal part of gun (H) firmly to side of grounded
metal pail, unlock trigger, and hold trigger open.
8. Units with runaway protection only: enable the
prime/flush function by pushing the prime/flush button on the DataTrak.
9. Open bleed-type air valve (U). Slowly turn clockwise
pump air regulator (X) increasing pressure until
pump starts.
10. Cycle pump slowly until all air is pushed out and
pump and hoses are fully primed.
11. Units with runaway protection only: disable the
prime/flush function by pushing the prime/flush button on the DataTrak.
12. Release and lock gun trigger. Pump sh ould stall
against pressure.
NOTICE
Never allow the pump to run dry of the fluid being
pumped. A dry pump quickly accelerates to a high
speed, possibly damaging itself. If your pump accelerates quickly, or is running too fast, stop it immediately and check the fluid supply. If the supply
container is empty and air has been pumped into
the lines, refill the container and prime the pump
and the lines with fluid, or flush and leave it filled
with a compatible solvent. Be sure to eliminate all
air from the fluid system.
1. Turn the gun’s ES ON/OFF lever to OFF.
2. See F
3. Close gun air regulator (T) and pump air regulator
4. Connect air line to bleed type air valve (U).
5. Check that all fittings throughout system are tight-
6. Position pail close to pump. Suction hose is approx-
22312798U
IG. 1 or FIG. 2. Lock gun trigger. Remove tip
guard and spray tip from gun (H). Refer to gu n manual.
(X) by turning knobs counterclockwise reducing
pressure to zero. Close bleed-type air valve (U).
Also verify that all drain valves are closed.
ened securely.
imately 4 ft (1.2 m) long. Do not stretch hose tight;
let it hang to assist fluid flow into pump.
Operation
Install the Spray Tip
Follow Pressure Relief Procedure, page 21. Install the
spray tip and tip guard as explained in your separate
gun manual, supplied. Be careful not to bend the electrode wire.
The fluid output and pattern width depend on the size of
the spray tip, the fluid viscosity, and the fluid pressure.
Use the Spray Tip Selection Chart in your gun instruction manual as a guide for selecting an appropriate
spray tip for your application.
Adjust the Atomization
4. Hold gun perpendicular and approximately 12
inches (304 mm) from surface.
5. Move gun first, then pull gun trigger to spray onto
test paper.
6. Increase fluid pressure in 100 psi (0.7 MPa, 7 bar)
increments, just to the point where a further
increase in fluid pressure does not significantly
improve fluid atomization. Refer to the following
example.
3. Fluid pressure is controlled by the air pressure supplied to the pump (pump air regulator). Set fluid
pressure at low starting pressure. For low viscosity
fluids (less than 25 sec, #2 Zahn cup) with lower
percent solids (typically less than 40%), start at 300
psi (2.1 MPa, 21 bar) at pump outlet. For fluids with
higher viscosity or higher solids content, start at 600
psi (4.2 MPa, 42 bar). Refer to the following example.
1. See FIG. 7. Close off pattern adjustment air by turning knob clockwise (in) all the way. This sets gun for
its widest pattern.
IG. 7. Pattern Air Knob
F
2. See F
IG. 8. Set atomizing air pressure at about 5 psi
(0.35 bar, 35 kPa) when triggered. Check spray pattern, then slowly increase air pressure until tails are
completely atomized and pulled into spray pattern.
Do not exceed 100 psi (0.7 MPa, 7 bar) air pressure
to gun.
3. For narrower pattern, turn pattern adjustment valve
knob counterclockwise (out). If pattern is still not
narrow enough, increase air pressure to gun slightly
or use different size tip.
NOTE: Follow directions in your gun operation manual
(supplied) to test the electrostatics and to check coverage and wrap on a test piece. See Troubleshooting in
your gun operation manual if there is a problem.
Shutdown
Follow Pressure Relief Procedure, page 21.
Always flush the pump before the fluid dries on the dis-
placement rod. See Flush the Pump on page 25.
F
IG. 8. Spray Pattern Problems
24312798U
Maintenance
Maintenance
Preventive Maintenance
Schedule
The operating conditions of your particular system
determine how often maintenance is required. Establish
a preventive maintenance schedule by recording when
and what kind of maintenance is needed, and then
determine a regular schedule for checking your system.
Replace lens covers on regulator gauge lenses when
dirt makes gauges difficult to read.
Tighten Threaded Connections
Before each use, check all hoses for wear or damage.
Replace as necessary. Check that all threaded connections are tight and leak-free.
Flush the Pump
3. Remove the tip guard and spray tip from gun. Re fer
to separate gun manual.
4. Place siphon tube in grounded metal pail containing
cleaning fluid.
5. Set pump to lowest possible fluid pressure, and start
pump.
6. Hold a metal part of the gun firmly to a grounded
metal pail.
7. Units with runaway protection only: enable the
prime/flush function by pushing the prime/flush button on the DataTrak.
8. Trigger gun. Flush system until clear solvent flows
from gun.
9. Units with runaway protection only: disable the
prime/flush function by pushing the prime/flush button on the DataTrak.
10. Follow Pressure Relief Procedure, page 21.
Read all Warnings. Follow all Grounding instructions. See page 18.
Flush the pump:
•Before first use
•When changing colors or fluids
•Before repairing equipment
•Before fluid dries or settles out in a dormant pump
(check the pot life of catalyzed fluids)
•At the end of the day
•Before storing the pump.
Flush at the lowest pressure possible. Flush with a fluid
that is compatible with the fluid you are pumping and
with the wetted parts in your system. Check with your
fluid manufacturer or supplier for recommended flushing
fluids and flushing frequency.
11. Clean the tip guard, spray tip, and flui d filter element
separately, then reinstall them.
12. Clean the inside and outside of the suction tube.
Wet Cup
Fill the wet cup one-half full with Graco Throat Seal Liq-
uid (TSL). Maintain level daily.
1. Follow Pressure Relief Procedure, page 21.
2. Be sure the ES ON/OFF lever is turned to OFF.
312798U25
Troubleshooting
Troubleshooting
•Check all possible problems and causes before
disassembling the pump.
Relieve the pressure before checking or servicing
the equipment.
ProblemCauseSolution
Pump fails to operate.Restricted line or inadequate air sup-
ply; closed or clogged valves.
Obstructed fluid hose or gun; fluid
hose ID is too small.
Fluid dried on the displacement rod.Clean; always stop the pump at the bottom
Dirty, worn, or damaged air motor
parts.
DataTrak models only: Air valve cannot cycle because solenoid pin is
extended
Pump operates, but output is
low on both strokes.
Pump operates, but output is
low on downstroke.
Erratic or accelerated pump
speed.
Fluid being pumped is visible
in the TSL reservoir.
Fluid is visible in the overflow
chamber.
Restricted line or inadequate air supply; closed or clogged valves.
Obstructed fluid hose or gun; fluid
hose ID is too small.
Worn packings in displacement
pump.
Held open or worn ball check valves
or piston packings.
Exhausted fluid supply.Refill and prime.
Held open or worn ball check valves
or packings.
Worn throat packings.Replace throat packings. See manual
Damaged bellows.Replace. See manual 312793.
•For all problems related to the electrostatics, see
Troubleshooting in your gun manual.
F
Clear line or increase air supply. Check that
the valves are open.
Open, clear*; use hose with larger ID.
of its stroke; keep the wet-cup 1/3 filled with
Graco throat seal liquid (TSL).
Clean or repair air motor. See manual
312796.
Enable runaway protection (See DataTrak
Operation, Setup Mode, page 28). Bleed
air from motor. Press on the DataTrak
display to retract solenoid pin.
Clear line or increase air supply. Check that
the valves are open.
Open, clear*; use hose with larger ID.
Replace packings. See manual 312792.
Clear valve; replace packings. See manual
312794.
Clear valve, replace packings; see manual
312794.
312794.
* To determine if the fluid hose or gun is obstructed, relieve the pressure. Disconnect the fluid hose and place a container at the pump fluid outlet to catch any fluid. Turn on the air just enough to start the pump. It the pump starts wh en
the air is turned on, the obstruction is in the hose or gun.
26312798U
DataTrak Controls and Indicators
/min,
AD
AE, see details at right
CFBT
GT
AC
RT
AA
PFRK
AB
UT
DT
ST
Run Mode
Setup Mode
TI11883a
RK
PF
ti8622b
ti8623b
Key for FIG. 9
DataTrak Controls and Indicators
AA Runaway Limit, in cycles per minute (user settable;
00=OFF)
AB Lower Displacement (user settable)
AC Flow Rate Units (user settable to gpm [US],
gpm [Imperial], oz/min [US], oz/min [Imperial], l/min, or
cc/min)
AD LED (fault indicator when lit)
AE Display
PF Prime/Flush Key (Enables Prime/Flush mode. While in
Prime/Flush mode, runaway protec ti on is di sa b l ed an d
the batch totalizer [BT] will not count.) LED will flash while
in Prime/Flush mode.
RK Reset Key (Resets faults. Press and hold for 3 seconds to
clear the batch totalizer.) Push to toggle between flow rate
and cycle rate. With runaway protection enabled, push to
extend and retract the solenoid pin.
CF Cycle/Flow Rate
BT Batch Totalizer
GT Grand Totalizer
RT Runaway Toggle (enable/disable)
UT E1 Toggle
DT E2 Toggle
ST E5 Toggle
FIG. 9. DataTrak Controls and Indicators
312798U27
DataTrak Operation
ti11902a
Solenoid release
button
DataTrak Operation
NOTE: The display (AE) will turn off after 1 minute to
save battery life. Press any key to wake up the display.
NOTICE
To prevent damage to the softkey buttons, do not
press the buttons with sharp objects such as pens,
plastic cards, or fingernails.
Setup Mode
1. See FIG. 9. Press and hold for 5 seconds until
Setup menu appears.
2. To enter settings for runaway (if equipped), lower
size, and flow rate units, and to enable runaway, E1,
E2, and E5 error options, press to change the
value, then to save the value and move the cur-
sor to the next data field. See page 30 for a description of E1, E2, and E5 error codes.
NOTE: Graco recommends setting runaway (if
2. Runaway Screens 1 and 2: To reset the runaway
solenoid, close the master air valve (U). Wait for air
to completely bleed off the air motor.
3. Runaway Screens 3 and 4: After the air is bled off,
push the solenoid release button down to reset the
air valve. The button will pop back up when the air
valve is repressurized.
equipped) to 60 . All DataTrak modules are
shipped with runaway protection not enabled.
NOTE: When runaway, E1, E2, and E5 error op tions are
enabled, a will appear on the setup screen. See F
9.
3. Move the cursor to the E5 error enable option field,
then press once more to exit Setup mode.
IG.
Run Mode
Runaway
NOTE: DataTrak is available with and without runaway
protection. Packages with M02xxx air motors ship without a runaway solenoid. All other packages are
equipped with a runaway solenoid.
1. See F
IG. 9. If pump runaway occurs, the runaway
solenoid will actuate, stopping the pump. The LED
(AD) will flash and the display (AE) will indicate a
runaway condition (see Table 1). The display will
cycle through six instruction screens.
FIG. 10. Reset the Air Valve
4. Runaway Screens 5 and 6: Press to clear the
diagnostic code and reset the runaway solenoid.
5. Open master air valve (U) to restart pump.
NOTE: To disable runaway monitoring, go to setup
mode and set runaway value to 0 (zero) or toggle (RT)
off (see F
IG. 9).
28312798U
DataTrak Operation
Prime/Flush
1. See FIG. 9. To enter Prime/Flush mode, press any
key to wake up the display, then press . The
Prime/Flush symbol will appear in the display and
the LED will flash .
2. While in Prime/Flush mode, runaway protection is
disabled and the batch totalizer (BT) will not count.
The grand totalizer (GT) continues to count.
3. To exit Prime/Flush mode, press any key to wake
up the display, then press . The Prime/Flush
symbol will disappear from the display and the LED
will stop flashing.
Counter/Totalizer
See FIG. 9. The last digit of the batch totalizer (BT) represents tenths of gallons or liters. To reset the totalizer,
press any key to wake up the display, then press and
hold for 3 seconds.
Diagnostics
DataTrak can diagnose several problems with the
pump. When the monitor detects a problem, the LED
IG. 9) will flash and a diagnostic code will appear
(AD, F
on the display. See Table 1.
To acknowledge the diagnosis and return to the normal
operating screen, press once to wake up the dis-
play, and once more to clear the diagnostic code
screen.
•If AC is set to gallons or ounces, BT and GT dis-
play gallons.
•If AC is set to liters or cc, BT and GT display
liters.
•If AC is set to cycles, BT and GT display cycles.
Press to toggle between flow rate units and cycles.
A letter under the BT display indicates that both BT and
GT are displaying gallons (g) or liters (l). No letter
means both BT and GT are displaying cycles.
Display
See FIG. 9. The display (AE) will turn off after 1 minute
of inactivity in Run mode or 3 minutes in Setup mode.
Press any key to wake up the display.
NOTE: DataTrak will continue to count cycles when display is off.
NOTE: The display (AE) may turn off if a high-level
static discharge is applied to the DataTrak. Press any
key to wake up the display.
312798U29
DataTrak Operation
SymbolCode Code NameDiagnosisCause
Table 1: Diagnostic Codes
Runaway
(DataTrak only)
E-1Diving UpLeak during upstroke.Worn piston valve or packings.
E-2Diving DownLeak during downstroke.Worn intake valve.
Pump running faster than set
runaway limit.
• Increased air pressure.
• Increased fluid output.
• Exhausted fluid supply.
E-3Low BatteryBattery voltage to o low to stop
runaway.
E-4Service
Problem with stopping runaway. • Damaged solenoid.
Component 1
(units with
runaway
protection only)
E-4Disconnected
Solenoid is disconnected.• Solenoid unplugged.
Solenoid
(units with
runaway
protection only)
E-5Service
Component 2
Solenoid is not engaging piston
cup
Problem with sensing valve
movement.
E-6Blown FuseFuse is blown. Replace fuse;
see page 31.
Low battery. Replace battery;
see page 31.
• Damaged valve carriage.
• Runaway (RT, F
IG. 9) protec-
tion may be enabled with
pump that is not equipped with
a runaway solenoid valve.
Enter setup screen and disable runaway protection.
• Damaged solenoid wires.
• Bracket and solenoid not tight
against air valve housing.
• Sensors unplugged.
• Sensors mounted incorrectly.
• Damaged sensors.
• Damaged valve carriage.
• Faulty solenoid or solenoid
wiring.
• Extreme temperatures (above
140°F [60°C]).
• Runaway (RT, F
IG. 9) protec-
tion may be enabled with
pump that is not equipped with
a runaway solenoid valve.
Enter setup screen and disable runaway protection.
30312798U
Replace DataTrak Battery or Fuse
ti11992a
ti11884a
DataTrak Operation
4. Remove two screws on back of module to access
battery.
To reduce the risk of fire and explosion, the battery
and fuse must be replaced in a non-hazardous location.
Use only an approved replacement battery, shown in
ABLE 2, and an approved fuse, shown in TABLE 3.
T
Use of an unapproved battery or fuse will void
Graco’s warranty and Intertek and Ex approvals.
Replace Battery
1. Unscrew cable from the back of the reed switch
assembly. See F
2. Remove the cable from the two cable clips.
IG. 11.
5. Disconnect the used battery and replace with an
approved battery. See Table 2.
(includes Parts 9a and 9b) (all
models except G30C95)
with Part 9: all models except
G30C95).
only.
with Part 9)
(G28C23, G30C87)
(G28C25, G30C89)
(All other models)
ADAPTER, outlet
3/8 nptm x 1/2 nptf, used on
G18xxx and G28xxx models
3/8 nptm x 3/4 nptf, used on
G15xxx and G24xxx models
Ref PartDescriptionQty
22239069HOSE, fluid, whip, 2 ft. (0.6 m), all
1
1
1
1
236135HOSE, fluid, whip, 6 ft (1.8 m),
37166846ADAPTER, for fluid whip hose,
41256425VALVE, drain, stainless steel (includes
44-----COUPLING, hose, drain (included with
45-----HOSE, drain (included with Part 41)1
48238909WIRE, grounding assembly1
85 15W718 LABEL, warning, not shown1
86 15W719 LABEL, warning, not shown1
models except G30C95.
G30C95 only.
1/4 npt x 1/4 npsm
Parts 44 and 45); Bellows packages
only
Part 41)
Non-Bellows Mounting Parts
Ref PartDescriptionQty
16-----NUT, lock, M5 x 0.08 (included with
1
4924E883AIR CONTROLS MOUNTING KIT,
1
51-----SCREW, hex head, M8 x 16 mm
53256427CART MOUNTING KIT, see page 39
5424A578WALL MOUNTING KIT, see page 39
1
Part 49)
wall, (includes 16 and 51)
(included with Part 49)
(GxxCxx models only)
(GxxWxx models only)
Bellows Mounting Parts
1
RefPartDescription
17111799 SCREW, M8 x 16, included with Part 308
3024E880 PLATE, mounting; includes hardware1
32105332 LOCK NUT, 5 mm2
55-----MOUNTING WEDGE, left, air control
panel, cart mount
56-----MOUNTING WEDGE, right, air control
panel, cart mount
57110873 SCREW, M5 x 0.82
58104541 LOCK NUT, M84
6024E879 CART MOUNTING KIT; see Bellows Cart
Mount Kit, page 40
1
Replacement Warning labels, signs, tags, and cards are
available at no cost.
1
1
1
1
2
1
2
1
1
Qty
.
1
1
1
312798U35
Parts
64
67
67
63
62
66
61
48
6970717245
74
73
81
82
2
3a
3b
ti13018a
ti13112a
84
7576
Model G30W86 shown
83a
(wall
mount
models)
83b
(cart
mount
models)
1
61a
61b
60
6
77
Heated Models, Cart Mount or Wall Mount
36312798U
65
9
10
8
ti15484b
ti13260b
ti13114a
16
16
22
68
78
79
80
ti13261a
Non-Hazardous Location Electrical
Cord Parts (Cart Mount Only)
53
9a
9b
49
(120 V
only)
51
Parts
312798U37
Parts
Heated Models (Continued)
Ref PartDescriptionQty
1VariesPump Assembly, see Model tables,
pages 9-13, and Manual 312794
224A581 PANEL, air controls1
3a24A576 DATATRAK, assembly, see manual
313541
3b-----INSERT, panel (included with Part 2)1
4
256422
256423
5-----STRAINER, suction (included with Part
6239300FILTER, fluid, sst, see manual 3072731
8189018SWIVEL, fluid hose1
9239352HOSE BUNDLE, air and fluid1
9a236130HOSE, air whip, 3 ft. (0.9 m)1
9b-----GROUND WIRE, spray gun1
10H85M10 GUN, Pro Xp 851
11AEM413 GUN TIP (not shown)1
12AEMxxx TIP OPTION (not shown)1
16-----NUT, lock, M5 x 0.08 (included with Part
22239069HOSE, fluid, whip, 2 ft (0.6 m)1
48238909GROUND WIRE, pump1
4924E883 AIR CONTROLS MOUNTING KIT, wall
For pumping acid materials that are compatible with
PTFE. Includes suction hose, swivel, and strainer.
KitDescriptionWall/Cart
24B337 3/4 in. hose, PTFE lined, with swivel
elbow
24B338 1 in. hose, PTFE lined, with swivel
elbow
24B424 3/4 in. hose, PTFE lined, with
straight swivel
24B425 1 in. hose, PTFE lined, with straight
swivel
Cart
Cart
Wall
Wall
DataTrak
NOTE: See DataTrak manual, 313541, for all DataTrak
related part numbers and kit information, including the
reed switch and solenoid.
Drain Valve Kit 256425
Includes drain valve (43), coupling (44), and hose(45).
Ambient Bellows: G15Bxx, G24Bxx
Cart
55-Gallon Suction Hose Kits
Includes suction hose, bung adapter, and strainer.
24A954 - 3/4 in. hose
24B598 - 1 in. hose
Overflow Chamber Kit 24E298
Merkur Bellows models only. See Manual 312793.
Includes overflow cup, with seals and necessary hardware.
42312798U
Mounting Dimensions
4 in.
11 in.
(279 mm)
Four 0.40 in. (10 mm)
mounting holes
ti12833a
(102 mm)
Wall Bracket (Non-Bellows)
Mounting Dimensions
312798U43
Technical Data
Technical Data
Merkur Electrostatic Spray Packages
U.S.Metric
Maximum Fluid Working PressureSee Models table on page 8.
Maximum Fluid Inlet Pressure
(Bellows)
Maximum Pump Air Inlet Pressure100 psi 0.7 MPa, 7.0 bar
Maximum Gun Air Inlet Pressure100 psi 0.7 MPa, 7.0 bar
RatioSee Models table on page 8.
Ambient Air Temperature Range35-120°F 2-49°C
Maximum Operating Temperature 120°F 49°C
Sound DataSee Technical Data in air motor manual 312796.
Wetted Parts (displacement pump)See manual 312792 (Merkur) or 312793 (Merkur Bellows).
Wetted Parts (spray gun)See manual 3A2495.
Wetted Parts (fluid hoses)nylon
Wetted Parts (suction assembly)stainless steel, nylon
Wetted Parts (fluid filter)See manual 307273.
Wetted Parts (drain valve)stainless steel, nylon
15 psi 0.1 MPa, 1.0 bar
California Proposition 65
CALIFORNIA RESIDENTS
WARNING: Cancer and reproductive harm – www.P65warnings.ca.gov.
Graco warrants all equipment referenced in this document which is manufactured by Graco and bearing its name to be free from defects in
material and workmanship on the date of sale to the original purchaser for use. With the exception of any special, extended, or limited warranty
published by Graco, Graco will, for a period of twelve months from the date of sale, repair or replace any part of the equipment determined by
Graco to be defective. This warranty applies only when the equipment is installed, operated and maintained in accordance with Graco’s written
recommendations.
This warranty does not cover, and Graco shall not be liable for general wear and tear, or any malfunction, damage or wear caused by faulty
installation, misapplication, abrasion, corrosion, inadequate or improper maintenance, negligence, accident, tampering, or substitution of
non-Graco component parts. Nor shall Graco be liable for malfunction, damage or wear caused by the incompatibility of Graco equipment with
structures, accessories, equipment or materials not supplied by Graco, or the improper design, manufacture, installation, operation or
maintenance of structures, accessories, equipment or materials not supplied by Graco.
This warranty is conditioned upon the prepaid return of the equipment claimed to be defective to an authorized Graco distributor for verification of
the claimed defect. If the claimed defect is verified, Graco will repair or replace free of charge any defective parts. The equipment will be returned
to the original purchaser transportation prepaid. If inspection of the equipment does not disclose any defect in material or workmanship, repairs
will be made at a reasonable charge, which charges may include the costs of parts, labor, and transportation.
THIS WARRANTY IS EXCLUSIVE, AND IS IN LIEU OF ANY OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT
LIMITED TO WARRANTY OF MERCHANTABILITY OR WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE.
Graco’s sole obligation and buyer’s sole remedy for any breach of warranty shall be as set forth above. The buyer agrees that no other remedy
(including, but not limited to, incidental or consequential damages for lost profits, lost sales, injury to person or property, or any other incidental or
consequential loss) shall be available. Any action for breach of warranty must be brought within two (2) years of the date of sale.
GRACO MAKES NO WARRANTY, AND DISCLAIMS ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE, IN CONNECTION WITH ACCESSORIES, EQUIPMENT, MATERIALS OR COMPONENTS SOLD BUT NOT
MANUFACTURED BY GRACO. These items sold, but not manufactured by Graco (such as electric motors, switches, hose, etc.), are subject to
the warranty, if any, of their manufacturer. Graco will provide purchaser with reasonable assistance in making any claim for breach of these
warranties.
In no event will Graco be liable for indirect, incidental, special or consequential damages resulting from Graco supplying equipment hereunder, or
the furnishing, performance, or use of any products or other goods sold hereto, whether due to a breach of contract, breach of warranty, the
negligence of Graco, or otherwise.
FOR GRACO CANADA CUSTOMERS
The Parties acknowledge that they have required that the present document, as well as all documents, notices and legal proceedings entered into,
given or instituted pursuant hereto or relating directly or indirectly hereto, be drawn up in English. Les parties reconnaissent avoir convenu que la
rédaction du présente document sera en Anglais, ainsi que tous documents, avis et procédures judiciaires exécutés, donnés ou intentés, à la suite
de ou en rapport, directement ou indirectement, avec les procédures concernées.
Graco Information
For the latest information about Graco products, visit www.graco.com.
For patent information, see www.graco.com/patents.
TO PLACE AN ORDER, contact your Graco distributor or call to identify the neares t distributor.
Phone: 612-623-6921 or Toll Free: 1-800-328-0211 Fax: 612-378-3505
All written and visual data contained in this document reflects the latest product information available at the time of publication.
GRACO INC. AND SUBSIDIARIES • P.O. BOX 1441 • MINNEAPOLIS MN 55440-1441 • USA
Copyright 2008, Graco Inc. All Graco manufacturing locations are registered to ISO 9001.
Graco reserves the right to make changes at any time without notice.
Original instructions. This manual contains English. MM 312798
Graco Headquarters: Minneapolis
International Offices: Belgium, China, Japan, Korea
www.graco.com
Revision U, February 2021
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