Parts
General Safety
This equipment generates very high fluid pressure. Spray from
the gun, leaks or ruptured components can inject fluid
through your skin and into your body and cause extremely
serious bodily injury, including the need for amputation. Also,
fluid injected or splashed into the eyes can cause serious
damage.
NEVER point the spray gun or dispensing valve at anyone or at
any part of the body. NEVER put hand or fingers over the
spray tip or nozzle. NEVER try to “blow back” fluid; this is
NOT an air spray system.
ALWAYS follow the Pressure Relief Procedure, below,
before
cleaning or removing the spray tip or nozzle or servicing
any system equipment.
NEVER try to stop or deflect leaks with your hand or body.
Be sure equipment safety devices are operating properly
before each use.
Medical Treatment
If any fluid appears to penetrate your skin, get
EMERGENCY
Tell the doctor exactly what fluid was injected. For treatment
instructions, have your doctor call the
DO NOT TREAT AS A SIMPLE CUT.
MEDICAL CARE AT ONCE .
NATIONAL POISON CENTER NETWORK
(412)681-6869
Pressure Relief Procedure
To reduce the risk of serious bodily injury, including injection,
always follow this procedure whenever the pump is shut off,
when checking or servicing any part of the system, when installing or changing spray tips, and whenever you stop spraying.
1.
Close the mixer material valves.
2.
Open the solvent flush valve(s) and flush until clean.
Spray Gun or Dispensing Valve Safety Devices
Be sure all gun safety devices are operating properly before
each use. Do not remove or modify any part of the gun; this
can cause a malfunction and result in serious bodily injury.
Safety Latch (If your gun is equipped with one)
Whenever you stop spraying, even for a moment, always set
the gun safety latch in the closed or “safe” position, making
the gun inoperative. Failure to set the safety latch can result in
accidental triggering of the gun.
Diffuser (If your gun is equipped with one)
The diffuser breaks up spray and reduces the risk of injection
when the tip is not installed. Check diffuser operation regular-
ly. Follow the Pressure Relief Procedure, below, then
remove the spray tip. Aim the gun into a metal pail, holding
the gun firmly to the pail. Using the lowest possible pressure,
trigger the gun. If the fluid emitted is
regular stream, replace the diffuser immediately.
fip Guard (If your gun is equipped with one)
ALWAYS have the tip guard in place on the spray gun while
spraying. The tip guard alerts you to the injection hazard and
helps prevent accidentally placing your fingers or any part of
your body close to the spray tip.
Trigger Guard (If your gun is equipped with one)
NEVER
guard helps prevent the gun from triggering accidentally if it is
dropped.
Spray Tip or Nozzle Safety
Use
nozzle. If the spray tip or nozzle clogs while spraying, engage
the gun safety latch immediately. ALWAYS follow the
Pressure Relief Procedure and then remove the spray tip to
clean it.
NEVER
pressure is fully relieved and the gun safety latch is engaged.
not
diffused into an ir-
operate the gun with the trigger guard removed. The
extreme caution when cleaning or changing spray tips or
wipe off build up around the spray tip or nozzle until
3.
Shut off the material and solvent pumps.
4. Open the spray gun or dispensing valve to relieve
pressure.
5.
If material has hardened in the hose or mixer, close the
material valve, shut off the material and solvent pumps,
and slow/y loosen the material inlet hose(s) to relieve
pressure, then remove the dispensing hose.
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EQUIPMENT
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HAZARD ~~~~~~~~~~~~~~~,~;.:-
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General Safety
Any misuse of the spray equipment or accessories, such as
overpressurizing, modifying parts, using incompatible
chemicals and materials, or using worn or damaged parts, can
cause them to rupture and result in injection or other serious
bodily injury, fire, explosion or property damage.
NEVER alter or modify any part of this equipment; doing so
could cause it to malfunction.
CHECK all spray equipment regularly and repair or replace
worn or damaged parts immediately.
2
306-940
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System Pressure
Never exceed the maximum working pressure of the lowest
rated equipment in your spray system. This manifold has a
3cKx)
psi (210 bar) MAXIMUM WORKING PRESSURE. Be
sure that all fluid and air accessories you add to the spray
system are properly rated to withstand the maximum air and
fluid working pressures of this system.
Material Compatibility
BE SURE that all materials and solvents used are chemically
compatible with the wetted parts shown in the Technical Data
on the back cover. Always read the material and solvent
manufacturer’s literature before using them in this sprayer.
HOSE
SAFETY
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Static electricity is created by the high velocity flow of fluid
through the pump and hose. If every part of the spray equip-
ment is not properly grounded, sparking may occur, and the
system may become hazardous. Sparking may also occur
when plugging in or unplugging a power supply cord. Sparks
High pressure fluid in the hoses can be very dangerous. If the
hose develops a pinhole leak, split or rupture due to any kind
of wear, damage or misuse, the high pressure spray emitted
from it can cause an injection injury or other serious bodily injury or property damage.
can ignite fumes from solvents and the fluid being sprayed,
dust particles and other flammable substances, whether you
are spraying indoors or outdoors, and can cause a fire or ex-
plosion and serious bodily injury and property damage. Do not
ALL FLUID HOSES MUST HAVE SPRING GUA’RDSI The
spring guards help protect the hose from kinks or bends at or
close to the coupling which can result in hose rupture.
plug in or unplug any power supply cords in the spray area
when there is any chance of igniting fumes still in the air.
TIGHTEN all fluid connections securely before each use. High
pressure fluid can dislodge a loose coupling or allow high
Grounding
pressure spray to be emitted from the coupling.
To reduce the risk of static sparking, ground the sprayer and
all other spray equipment used or located in the spray area.
CHECK your local electrical code for detailed grounding in-
structions for your area and type of equipment. BE SURE to
ground all of this spray equipment:
NEVER use a damaged hose. Before each use, check entire
hose for cuts, leaks, abrasion, bulging cover, or damage or
movement of the hose couplings. If any of these conditions
exist, replace the hose immediately. DO NOT try to recouple
high pressure hose or mend it with tape or any other device. A
1.
Pump:
use a ground wire and clamp as instructed in your
repaired hose cannot contain the high pressure fluid.
pump instruction manual.
HANDLE AND ROUTE HOSES CAREFULLY. Do not pull on
2.
Fluid hoses:
of 500 feet
grounding continuity. Refer also to Hose Grounding
Continuity.
3.
Spray gun, manifold or dispensing valve: obtain groun-
ding through connection to a properly grounded fluid
hose and sprayer.
use only grounded hoses with a maximum
(150 m)
combined hose length to ensure
hoses to move equipment. Do not use materials or solvents
which are not compatible with the inner tube and cover of the
hose. DO NOT expose the hose to temperatures above
(62OC)
Hose Grounding Continuity
Grace fluid hoses have electrically conductive material on the
surface of the center core of the hose. Other hoses on the
market may have a ground wire extending the length of the
4.
Object being sprayed:
according to local code.
hose. The ground wire can break in use which will destroy the
electrical grounding of the hose.
5.
All
solvent pails
code.
Use on/y
place the pail on a non-conductive surface, such as paper
or cardboard, which interrupts the grounding continuity.
used when flushing, according to local
metalpaik,
which are conductive. Do not
To be sure of continuity, check electrical resistance at least
once a week. Check overall resistance when using multiple
hose assemblies. If the resistance exceeds 29 megohms,
replace it immediately. Ground wire hose may have different
6.
To maintain grounding continuity when flushing or reliev-
ing pressure,
the side of a
always hold a metal part of the gun firmly to
metal
pail, then trigger the gun.
resistance; check supplier.
MOVING PARTS HAZARD
Flushing Safety
Reduce the risk of injection injury, static sparking, or splashing
by following the specific flushing procedure given on page 5 of
this manual. Follow the Pressure Relief Procedure on page
2, and remove the spray tip before flushing. Hold a metal part
of the gun firmly to the side of a
metal
pail and use the lowest
possible fluid pressure during flushing.
Moving parts can pinch or amputate your fingers or other
body parts. KEEP CLEAR of moving parts when starting or
operating the sprayer. Unplug the sprayer and relieve pressure
before checking or servicing the sprayer to prevent it from
starting accidentally.
or below
-4OOF (-4OOC).
16OOF
.
IMPORTANT
United States Government safety standards have been adopted under the Occupational Safety and Health Act. These standards-par-
ticularly the General Standards, Part 1910, and the Construction Standards, Part 1926-should be consulted.
306-W
3
INSTALLATION
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For assistance in setting up a plural component system,
you should contact
Belmont, Chicago, Illinois 60121-2891, (3121678-7200.
This will help ensure that you select the proper type and
size of equipment for your job.
All inlet connections on this mixer have l/4
threads.
Grace
Fluid Systems, 9451 West
npt(m)
Use an air regulator to control the mixer motor speed.
Install a bleed-type master air valve on the air line to
shut off and relieve air to the mixer motor.
Start and prime the solvent pump and check the
flushing system before connecting the material hoses.
OPERATION i
Determine Motor Air Pressure Setting
Pull the actuating lever (29) back to close the inlet
valves. Then refer to the separate operating instructions
for your proportioning pump, and start the system.
Set the air pressure to the mixer motor at about 30 psi
(2.5 bar). Place a small waste container under the mixer
outlet (A). Open the air valve to start the mixer motor,
then open the material inlet valves. When the container
is full, close the valves.
Increase the air pressure slightly and dispense another
sample. Repeat this procedure five or six times, record-
ing the air pressure setting for each sample. Place
another waste container under the mixer outlet, start
the mixer motor, and open the solvent valve. When
clean solvent comes form the outlet, close and the solvent valve then stop the mixer motor.
Let all samples “cure”,
each one for proper cure. Select the sample which
cured properly at the lowest air pressure and use that
pressure for the mixer air supply. Repeat the test if none
of the samples cured properly.
or harden, completely. Examine
CAUTION
Always use the lowest possible air pressure as this
produces the least amount. of heat created by fric-
tion of the mixing shaft with the motor.
r
4
306-940
I i
Determine Material Pot Life
To test the pot life, use a cup with approximately the
same shape and size as the mixing assembly chamber; 1
cubic inch for Model 207389, or 2.1 cubic inch for
Model 207-390. Start the mixer motor and open the
material valves to fill the container. Close the material
valves and starting timing the reaction.
Flush the mixing chamber with solvent to remove the
mixer material.
When the material starts to gel, check how long the
reaction has taken. This is the operating pot life of your
material. Reduce that time by at least 10% to determine
how long your system can remain idle without flushing
or dispensing material. For example, if the pot life is 11
minutes, then 9 minutes is the maximum time that mixed material should be left in the mixing chamber and
hoses before dispensing or flushing.
NOTE:
ASSEMBLY
If the material pot life is 10 minutes or less,
use the Grace Automatic Power Mixer.
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