AIRLESSCO GS800 User Manual
Operation/Repair/Parts
3A1186F
Airless Paint Sprayer
For application of architectural paints and coatings. For professional use only.
Airlessco - GS800 24F574, 16M531
3000 psi (20.7 MPa, 207 bar) Maximum Working Pressure
Important Safety Instructions
Read all warnings and instructions in this
manual. Save these instructions.
Related Manuals
Gun Manual
289316:
312363 - English
312364 - Spanish
312365 - French
24H289:
3A0479 - English
3A0480 - French
3A0481 - Spanish
EN
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Warnings
Warnings
The following warnings are for the setup, use, grounding, maintenance, and repair of this equipment. The exclamation point symbol alerts you to a general warning and the hazard symbols refer to procedure-specific risks. When
these symbols appear in the body of this manual, 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
WARNINGWARNINGWARNING
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.
• Do not fill fuel tank while engine is running or hot; shut off engine and let it cool. Fuel is flammable and
can ignite or explode if spilled on hot surface.
• Eliminate all ignition sources; such as pilot lights, cigarettes, portable electric lamps, and plastic drop
cloths (potential static arc).
• Keep work area free of debris, including solvent, rags and gasoline.
• Do not plug or unplug power cords, or turn power or light switches on or off when flammable fumes are
present.
• Ground all equipment in the work area. See Grounding instructions.
• Use only grounded hoses.
• Hold gun firmly to side of grounded pail when triggering into pail.
• If there is static sparking or you feel a shock, stop operation immediately. Do not use equipment
until you identify and correct the problem.
• Keep a working fire extinguisher in the work area.
SKIN INJECTION HAZARD
High-pressure spray is able to inject toxins into the body and cause serious bodily injury. In the event that
injection occurs, get immediate surgical treatment.
• Do not aim the gun at, or spray any person or animal.
• Keep hands and other body parts away from the discharge. For example, do not try to stop leaks with
any part of the body.
• Always use the nozzle tip guard. Do not spray without nozzle tip guard in place.
• Use Airlessco nozzle tips.
• Use caution when cleaning and changing nozzle tips. In the case where the nozzle tip clogs while
spraying, follow the Pressure Relief Procedure for turning off the unit and relieving the pressure
before removing the nozzle tip to clean.
• Do not leave the unit energized or under pressure while unattended. When the unit is not in use, turn
off the unit and follow the Pressure Relief Procedure for turning off the unit.
• Check hoses and parts for signs of damage. Replace any damaged hoses or parts.
• This system is capable of producing 3000 psi. Use Airlessco replacement parts or accessories that are
rated a minimum of 3000 psi.
• Always engage the trigger lock when not spraying. Verify the trigger lock is functioning properly.
• Verify that all connections are secure before operating the unit.
• Know how to stop the unit and bleed pressure quickly. Be thoroughly familiar with the controls.
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Warnings
WARNING
WARNINGWARNINGWARNING
EQUIPMENT MISUSE HAZARD
Misuse can cause death or serious injury.
• Always wear appropriate gloves, eye protection, and a respirator or mask when painting.
• Do not operate or spray near children. Keep children away from equipment at all times.
• Do not overreach or stand on an unstable support. Keep effective footing and balance at all times.
• Stay alert and watch what you are doing.
• Do not leave the unit energized or under pressure while unattended. When the unit is not in use, turn
off the unit and follow the Pressure Relief Procedure for turning off the unit.
• Do not operate the unit when fatigued or under the influence of drugs or alcohol.
• Do not kink or over-bend the hose.
• Do not expose the hose to temperatures or to pressures in excess of those specified by Airlessco.
• Do not use the hose as a strength member to pull or lift the equipment.
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
property 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 supplier
for compatibility.
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 servicing equipment,
follow the Pressure Relief Procedure and disconnect all power sources.
CARBON MONOXIDE HAZARD
Exhaust contains poisonous carbon monoxide, which is colorless and odorless. Breathing carbon
monoxide can cause death.
• Do not operate in an enclosed 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 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.
BURN HAZARD
Equipment surfaces and fluid that’s heated can become very hot during operation. To avoid severe burns:
• Do not touch hot fluid or equipment.
3A1186F 3
Warnings
WARNING
WARNINGWARNINGWARNING
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 protection.
• Respirators, protective clothing, and gloves as recommended by the fluid and solvent manufacturer.
CALIFORNIA PROPOSITION 65
The engine exhaust from this product contains a chemical known to the State of California to cause
cancer, birth defects or other reproductive harm.
4 3A1186F
Component Identification
PRIME
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PRESSURE
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Component Identification
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A
B
C
NOTE: The valve handle can move both clockwise and counter clockwise and can face different directions.
A Pressure Control Knob Adjusts pressure. Turn clockwise to increase pressure and
counterclockwise to decrease pressure.
Prime/Pressure (PR) Relief Valve Primes pump and relieves pressure from gun, hose and tip.
B Prime/Pressure (PR) Relief Valve Open
Position
Relieves pressure from gun, hose and tip and primes the unit
when in the open position. It is in the Open position when there
is a wider gap between valve handle and cam body.
C Prime/Pressure (PR) Relief Valve
Closed Position
Pressurizes system when closed. It is in the Closed position
when there is only a slight gap between handle and body.
3A1186F 5
Operation
Operation
Pressure Relief Procedure
Follow the Pressure Relief Procedure whenever
you see this symbol.
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.
1. Engage the gun trigger lock. Refer to the separate
instruction manual provided with gun for safety features and how to engage the trigger lock.
2. Turn the unit off.
3. Disengage the gun trigger lock and trigger the gun
to relieve residual fluid pressure.
5. Re-engage gun trigger lock and close Prime/Pressure Relief Valve.
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If the spray tip or hose is clogged, follow Steps 1
through 5 above. Expect paint to splash into the
bucket while relieving pressure during Step 4.
NOTE: If you suspect that pressure hasn’t been relieved
due to damaged Prime/Pressure Relief Valve, or other
reason, slowly loosen the tip nut or hose coupling.
Setup
Hold metal part of the gun in contact with
grounded metal pail. Use minimum pressure.
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4. Turn Prime/Pressure Relief Valve (PR Valve) to the
open (priming) position to relieve residual pressure.
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There will be a wider gap between valve handle
and cam body when in open position. In the
closed position there is only a very slight gap.
Grounding
Always ground the following components:
• Sprayer - Connect a ground wire and clamp (supplied) to a true earth ground.
• Fluid Hose - Use only grounded hoses.
• Spray Gun of Dispensing Valve - Grounding is
obtained through connection to a properly grounded
fluid hose and pump.
• Object being sprayed - According to local code.
Connect the hose and gun
1. Remove the plastic cap plug from the outlet and
screw a conductive or grounded 3000 psi spray
hose onto fluid outlet.
2. Connect an airless spray gun to the other end of the
hose. Do not install spray tip.
NOTE: Do not use thread sealer on swivel unions as
they are made to self seal.
NOTE: The valve handle can move both clockwise and
counter clockwise and can face different directions.
6 3A1186F
NOTE: The 6’ whip hose should always be 3/8”.
Operation
Fill the Packing Nut/Wet Cup
1. Fill the Packing Nut/Wet Cup with 5 drops of Airlessco Throat Seal Oil (TSO).
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Check the Engine Oil Level
1. Unscrew the oil fill plug. The dipstick is attached to
the plug.
2. Without threading the plug into place, check to be
sure the oil is up to the top mark of the dipstick.
3. If oil is needed, refer to engine manual.
Fill the Fuel Tank
1. Close the fuel shutoff valve.
2. Use only clean, fresh, well-known brands of
unleaded regular grade gasoline.
3. Remove the fuel cap and fill tank. Be sure the air
vent in the fill cap is not plugged so fuel can flow to
the carburetor, then replace the cap.
Oil- or Water-based Materials
• When changing from water-based material to oil
based material, flush with soapy water and then
mineral spirits.
• When changing from oil based material to water
base material, flush with mineral spirits, followed by
soapy water, then a clean water flush.
• When flushing with solvents, ground pail and gun.
• Flush before changing colors, before fluid can dry in
the equipment, at the end of the day, before storing,
and before repairing equipment.
Flushing
• To reduce the risk of static sparking, which can
cause fire or explosion, always hold a metal part of
the gun firmly against the metal pail when flushing.
This also reduces splashing.
• Always remove the spray tip before flushing.
• Only metal pails, which are conductive, should be
used as solvent pails when flushing.
1. Make sure the gun trigger lock in engaged and there
is no spray tip in the gun. Refer to the separate
instruction manual provided with gun for safety features and how to engage the trigger lock.
Flush the Sprayer
1. Flush the sprayer. See Flushing Procedure on
page 7.
Prime and Flush Storage Fluid
NOTICE
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 equipment for the first time.
Before beginning a new spraying project you need to
prime the sprayer and flush the storage fluid out of the
sprayer.
3A1186F 7
2. Pour enough clean, compatible solvent into a large,
empty metal pail to fill the pump and hoses.
3. Place the suction tube into the pail or place the pail
under the pump.
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Operation
4. Turn Pressure Control Knob counter clockwise to
lowest setting.
PRIME
HIGH PRESSURE
PRESSURE
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5. Open the prime valve to the open - “Priming Position”. This will allow an easy start.
Open
(Priming and
Pressure Relief)
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6. Turn the engine ON/OFF switch to ON.
7. Move the choke toward the closed position.
8. Move the throttle lever slightly to the left.
9. Turn the fuel valve ON. Pull the start rope. Pull the
engine over against compression stroke and then
let the rope rewind slowly into the starter. Pull firmly
and rapidly to start the engine. Do NOT drop the
rope. Hold on to the handle while rewinding, or the
rope may rewind improperly and jam the assembly.
If the engine does not start, open the choke all the
way and continue cranking.
11. Point the gun into the metal pail and hold a metal
part of the gun firmly against the pail. Maintain firm
metal to metal contact between gun and container.
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12. Disengage the gun trigger lock and squeeze the
trigger. At the same time, slowly turn the pressure
control knob clockwise, just enough to move liquid
at low pressure. Close the prime spray valve.
13. Allow the pump to operate until clean solvent comes
from the gun.
14. Release the trigger and engage the gun trigger lock.
15. If you are going to start spraying, place the pump or
suction tube into the supply container. Release the
gun trigger lock and trigger the gun into another
empty, metal container, holding a metal part of the
gun firmly against the metal pail, forcing the solvent
from the pump and hose. When paint starts coming
from gun, turn pressure control knob to minimum
pressure, place prime valve in prime (open) position
and engage the gun trigger lock.
16. If you are going to store the sprayer, remove the
suction tube or pump from the solvent pail, force the
solvent from the pump and hose. Engage the gun
trigger lock. See Storage, 9.
17. Whenever shutting down the sprayer, follow Pres-
sure Relief Procedure, page 6.
NOTICE
Throttle Lever
Choke Lever
Fuel Valve
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10. After the engine is warm, gradually close the choke,
raise the RPM of engine slightly by moving throttle
to the left. .
Closed
(Pressure)
To prevent damage and freezing during storage,
never leave water in the fluid pump
Startup
1. Prepare the material according to the material manufacturer’s recommendations.
2. Place the suction tube into the material container.
3. Start the sprayer.
a. Prime/PR Valve must be “OPEN” in the prim-
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8 3A1186F
ing position.
Operation
b. After ensuring the gun trigger lock is engaged,
attach tip and safety guard.
c. Turn the engine ON/OFF switch to the “ON”
position.Pull rope vigorously until engine
starts.
d. Turn the Pressure Control Knob clockwise to
prime the pump.
e. After the pump is primed, turn the Prime/PR
Valve to the “CLOSED” position.
f. Turn Pressure Control Knob to the desired
spray pressure.
g. Disengage the gun trigger lock to begin spray-
ing.
Adjusting the Pressure
• To reduce the risk of injection, never hold your
hand, body, fingers or hand in a rag in front of the
spray tip when cleaning or checking for a cleared
tip. Always point the gun toward the ground or into
a waste container when checking to see if the tip is
cleared or when using a self cleaning tip.
• When you spray into the paint bucket, always use
the lowest spray pressure and maintain firm metal
to metal contact between the gun and container.
• To stop the unit in an emergency, turn the engine
off. Then relieve the fluid pressure in the pump and
hose. See Pressure Relief Procedure, page 6
When adjusting the pressure, turn the Pressure Control
Knob clockwise to increase pressure and counterclockwise to decrease pressure. Always use the lowest pressure necessary to completely atomize the material. If
more coverage is needed, use a larger tip rather than
increasing the pressure. Check the spray pattern. The
tip size and angle determines the pattern width and flow
rate.
Shutdown
1. Relieve Pressure, page 6.
2. Clean the tip and gun as recommended in the separate Gun Manual supplied with the gun.
3. If spraying water-based material or a material that
could harden in the sprayer overnight, flush the
sprayer after use. See Flushing, page 7.
Storage
Short Term
1. Flush sprayer with compatible solvent before storing, then fill the pump and hoses with an oil based
solvent such as mineral spirits or Graco or Airlessco
Pump Armor.
• For oil base paint: flush with mineral spirits
• For water-base paint: flush with water, then min-
eral spirits and leave the pump, hose and gun
filled with mineral spirits.
Long Term
For longer storage, use Graco or Airlessco Pump
Armor. Shut off sprayer, Relieve Pressure, page 6, and
make sure prime valve is left open.
Start Up After Storage
Before using water-base paint, flush sprayer with soapy
water and then a clean water flush. When using oil-base
paint, flush out the mineral spirits with the material to be
sprayed.
NOTE: Always store unit indoors.
NOTICE
NOTE: Operating the sprayer at higher pressure
than needed wastes material, causes early tip wear,
and shortens sprayer life.
3A1186F 9
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