q-Tech QT830 User manual

Aristospray Australasia PTY Ltd
27 Tatura Ave,
Gosford
NSW 2250
Phone: [phone]
Aristospray Ltd
UK & Europe
2b Stephenstown Industrial Park
Balbriggan
County Dublin
Ireland
K32 KV26
Australia
27 Tatura Avenue
Gosford
NSW 2250
Email [e-mail]
www.QTechSpray.com
www.Aristospray.com
Phone
UK 01895 276751
Ireland 01 690 3162
Australia 1300 229 757
International [phone]
QTech.
QT830 Airless Sprayer.
USER
MANUAL

QTech QT830 Honda Engine-Drive Airless Sprayer
CAUTION
This manual contains important warnings and information
PLEASE READ & KEEP FOR FUTURE REFERENCE
VERSION QT830-01-0720
Aristospray Ltd
2b Stephenstown Industrial Park, Balbriggan, County Dublin, Ireland
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QTechSpray.com
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Quick check
The information on this page is intended only as a quick guide. It is no way intended as
a substitute to the information on the pages following, which the user should be fully
acquainted with before using an engine drive airless sprayer.
QTech QT830 Airless Sprayer
Problem: Engine is running, but pump will not operate
Check Solution
Clutch slipping Repair or replace clutch
Clutch not engaging Check clutch electrical connections
Problem: Pump loses prime or will not prime
Check Solution
Low paint Rell
Clogged inlet strainer Clean
Loose suction pipe Tighten connection
Intake ball not seating Clean or replace
Problem: Engine cannot turn pump
Check Solution
Paint hardened in pump Replace packings and clean all pump and filter parts
Paint frozen in pump Thaw pump and hoses
Problem: Pressure problems
Check Solution
Clogged tip or lters Relieve pressure and clean
Problem: Pump cannot maintain pressure
Check Solution
Oversized tip Use correct maximum tip for sprayer
Tip so worn as to become oversize Relieve pressure and replace tip
Problem: Low output
Check Solution
Worn tip Relieve pressure and replace tip
Worn packings Replace packings
Filter clogged Relieve pressure and clean lter
Priming valve leaking Relieve pressure and repair valve
Suction pipe leaking or kinked Correct kink, or tighten as needed
Pump runs on when trigger is released Service pump or tighten packing nut
Problem: Pump runs intermittently
Check Solution
Pressure set too high for the tip size Adjust to the correct pressure
Problem: Engine straining
Check Solution
Packings too tight Loosen and adjust correctly

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USE TO SPRAY
Virtually any water or solvent
based coatings including those
with a high solid content
Intumescents
PERFORMANCE
Flow 8.3 ltr/min
Max tip 1-gun 0.048”
2-guns 0.035”
3-guns 0.027”
4-guns 0.023”
MWP 227 bar | 3300 psi
SPECIFICATION
Motor Honda GX200
196 cc | 6.5 hp
Weight 74.5 kg
Max hose 100 m
Warranty 2 years
SUPPLIED COMPLETE WITH
TriTech T360 airless spray gun
TriTech Contractor 517
airless tip & guard
3/8” x 15m textile braided
hose assembly
1/4” x 1m textile braided
whip hose
PRODUCT CODE
QT830
QTech QT830
QTechSpray.com
Honda GX200 motor
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Filter cap
Fence
(access to
packing
nut)
Suction tube
Drain tube
Suction
lter
Prime valve
QTech QT830 Airless Sprayer
Pump assembly
Suction hose
Check ball
housing
gland nut
Engine
ignition switch
Fuel tank
Buttery
bolt
Recoil
starter
High pressure hose

Please read these instructions carefully
before using the equipment
GENERAL SAFETY
WARNING! Read and understand all instructions. Failure to follow all instructions listed
below may result in electric shock, re and / or serious personal injury. The term airless
sprayer in all of the warnings listed below refers to your engine-driven airless sprayer.
WORK AREA
+ Keep your work area clean and well lit. Cluttered benches and dark areas
invite accidents.
+ Do not operate airless sprayers in explosive atmospheres, such as in the
presence of ammable liquid, gases, or dust. Airless sprayers create sparks
which may ignite the dust or fumes.
+ Keep bystanders, children, and visitors away while operating a airless sprayer.
Distractions can cause you to lose control.
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PERSONAL SAFETY
+ Stay alert, watch what you are doing and use common sense when operating
an airless sprayer. Do not use while you are tired or under the inuence of
drugs, alcohol, or medication. A moment of inattention while operating airless
sprayers may result in serious personal injury.
+ Use safety equipment. Always wear eye protection. Safety equipment such as
dust mask, non-skid safety shoes, hard hat, or hearing protection used for
appropriate conditions will reduce personal injuries.
+ Do not overreach. Keep a proper footing and balance at all times.
This enables better control of the airless sprayer in unexpected situations.
+ Dress properly. Do not wear loose clothing or jewelry. Keep your hair,
clothing and gloves away from moving parts. Loose clothes, jewelry or long
hair can be caught in moving parts.
SERVICE
+ Have your airless sprayer serviced by a qualied repair person using only
identical replacement parts. This will ensure that the safety of the airless
sprayer is maintained.
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PRESSURE RELIEF PROCEDURE
IMPORTANT! To avoid possible serious body injury, always follow this
procedure whenever the sprayer is shut off, when checking it, when
installing, changing or cleaning tips and whenever you stop spraying.
1Engage the gun safety latch.
2Turn the unit off.
3Disengage the gun safety latch and trigger the gun to relieve residual uid
pressure. Hold metal part of the gun in contact with grounded metal pail.
4Turn the Priming Valve to the open (priming) position to relieve residual
uid pressure.
5Re-engage gun safety latch and close Priming Valve. If the SPRAY TIP OR
HOSE IS CLOGGED, follow Step 1 through 5 above. Expect paint splashing
into the bucket while relieving pressure during Step 4.
QTech QT830 Airless Sprayer

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SPECIFIC SAFETY RULES
WARNING: Do not use guns for spraying ammable materials.
WARNING: Be aware of any hazards presented by the material being sprayed,
and consult the markings on the material container or the information supplied
by the manufacturer of the material to be sprayed.
WARNING: Do spray any material where the hazard is not known.
WARNING: Do not clean guns with ammable solvents with
a ash-point below 55°C.
NOTE: A non-ammable solvent is here dened as one which has
a ash point above 55°C.
WARNING: This appliance cannot be used by children under 18 years old or
persons with reduced physical, sensory or mental capabilities or lack of
experience or knowledge of the safe operation of the applicance.
WARNING: HIGH PRESSURE
Never leave pressurized system unattended. Always follow the PRESSURE
RELIEF PROCEDURE. Take precautions to avoid high pressure
component rupture.
DANGER: INJECTION INJURY
Skin injection by high pressure paint is not a simple cut. It must be treated
surgically immediately.
WARNING: FIRE AND EXPLOSION HAZARD
Take all precautions to avoid sources of sparks and ignition when spraying.
Keep the machine at least 6 meters away from the spraying operation.
WEAR PROTECTIVE EQUIPMENT AT ALL TIMES
Always use a respirator, eye protection and protective clothing. Keep clear of
moving parts when starting or operating the sprayer. Do not put your ngers
into any openings to avoid amputation by moving parts or burns on hot parts.
When starting the motor, maintain a safe distance from moving parts of the
equipment. Before adjusting or servicing any mechanical part of the sprayer,
follow the PRESSURE RELIEF PROCEDURE.
EXPLOSION RISK FROM HALOGENATED HYDROCARBON SOLVENTS
Never use halogenated hydrocarbon solvents in this machine.
Contact with aluminum parts may cause an explosion.
Some of the most common of these solvents are:
Carbon tetrachloride
Chlorobenzene
Dichloroethane
Dichloroethyl Ether
Ethyl Bromide
Ethyl Chloride
Tetrachloroethane
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QTech QT830 Airless Sprayer

PREVENT STATIC SPARKING
FIRE/EXPLOSIONS
Vapors created when spraying can be ignited by sparks.
To reduce the risk of re, always locate the sprayer at least 20 feet (6 m.) away
from spray area. Do not plug in or unplug any electrical cords in the spray area.
Doing so can cause sparks which can ignite any vapors still in the air. Follow the
coating & solvent manufacturers safety warnings and precautions.
MEDICAL ALERT INJECTION INJURIES
If any uid appears to penetrate your skin, GET EMERGENCY MEDICAL CARE
AT ONCE. DO NOT TREAT AS AN ORDINARY CUT. High pressure uids from
spray or leaks are powerful enough to easily penetrate the skin and cause
extremely serious injection injury, leading to the possible need for amputation.
+ NEVER point the spray gun at anyone or any part of the body.
+ NEVER put your hand or ngers over the spray tip. Do not use a rag or
any other materials over your ngers. Paint will penetrate through these
materials and into the hand.
+ NEVER try to stop or deect leaks with your hand or body.
+ ALWAYS have the tip guard in place when spraying.
+ ALWAYS lock the gun trigger when you stop spraying.
+ ALWAYS remove tip from the gun to clean it.
+ NEVER try to "blow back" paint, this is not an air powered sprayer.
+ ALWAYS follow the PRESSURE RELIEF PROCEDURE before cleaning or
removing the spray tip or servicing any system equipment.
+ Be sure the equipment safety devices are operating properly before each use.
+ Tighten all of the uid connections before each use.
+ NEVER alter equipment in any manner.
+ NEVER smoke while in spraying area.
+ NEVER spray highly ammable materials.
+ NEVER use around children.
+ NEVER allow another person to use sprayer unless he is thoroughly
instructed on its safe use and given this operator’s manual to read.
+ ALWAYS wear a spray mask, gloves and protective eye wear while spraying.
+ ALWAYS ensure re extinguishing equipment is readily available and
properly maintained.
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NEVER LEAVE SPRAYER UNATTENDED WITH PRESSURE IN THE SYSTEM.
FOLLOW PRESSURE RELIEF PROCEDURES AT ALL TIMES.
ALWAYS INSPECT SPRAYING AREA
+ Keep the spraying area free from obstructions.
+ Make sure the spraying area has good ventilation to safely remove
vapors and mists.
+ NEVER keep ammable material in spraying area.
+ NEVER spray in vicinity of open ame or other sources of ignition.
+ The spraying area must be at least 6 metres away from spray unit.
SPRAY GUN SAFETY
+ ALWAYS set gun safety lock in the "LOCKED" position when not in use
and before servicing or cleaning.
+ NEVER remove or modify any part of the gun.
+ ALWAYS REMOVE THE SPRAY TIP when cleaning.
Flush unit at the LOWEST POSSIBLE PRESSURE.
+ ALWAYS check operation of all gun safety devices before each use.
+ Be very careful when removing the spray tip or hose from the gun.
A plugged line will contain uid under pressure. If the tip or line is plugged,
follow the PRESSURE RELIEF PROCEDURE.
TIP GUARD
+ 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 ngers or any part of your body close to the spray tip.
SPRAY TIP SAFETY
+ Use extreme caution when cleaning or changing spray tips. If the spray tip
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 wipe off build up around the spray tip.
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QTech QT830 Airless Sprayer

TOXIC FLUID HAZARD
+ ALWAYS remove tip guard & tip to clean AFTER pump is turned off and the
pressure is relieved by following the PRESSURE RELIEF PROCEDURE.
+ Hazardous uid or toxic fumes can cause serious injury or death if splashed in
eyes or on skin, inhaled or swallowed. Know the hazards of the uid you are
using. Store and dispose of hazardous uid according to manufacturer, local,
state and national guidelines.
+ ALWAYS wear protective eyewear, gloves, clothing and respirator
as recommended by uid manufacturer.
HOSES
+ Tighten all of the uid connections securely before each use. High pressure
uid can dislodge a loose coupling or allow high pressure spray to be emitted
from the coupling and result in an injection injury or serious bodily injury.
+ Only use hoses with a spring guard. The spring guard helps protect the hose
from kinks or other damage which could result in hose rupture and cause an
injection injury. Do not allow kinking or crushing of hoses or allow it to vibrate
against rough, sharp or hot surfaces.
+ Use only conductive uid hoses for airless applications. Be sure the gun is
grounded through the hose connections. Use only high pressure airless hoses
with static wire which are approved for 3000 psi.
+ NEVER use a damaged hose, which can result in hose failure or rupture and
cause an injection injury or other serious bodily injury or property damage.
Before each use, check entire hose for cuts, leaks, abrasions, bulging of the
cover, or damage or movement of couplings. If any of these conditions exist,
replace the hose immediately.
+ NEVER use tape or any device to try to mend the hose as it cannot contain
the high pressure uid. NEVER ATTEMPT TO RECOUPLE THE HOSE.
It is not possible to recouple a high pressure hose .
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GROUNDING
+ Ground the sprayer and other components in the system to reduce the risk of
static sparking, re or explosion which can result in serious bodily injury and
property damage. For detailed instructions on how to ground, check your
local electrical code.
Always ground all of these components:
1Fluid hose: use only grounded hoses.
2Spray gun or dispensing valve: grounding is obtained through connection to
a properly grounded uid hose and pump.
3All solvent pails must be conductive metal material and properly grounded.
Do not place on a non conductive insulating surface unless a ground wire is
added to a true earth such as a metal water pipe. ALWAYS ensure re
extinguishing equipment is readily available and properly maintained.
FLUSHING SAFETY
WHEN SPRAYING & CLEANING WITH FLAMMABLE PAINTS AND THINNERS
1When spraying with ammable liquids, the unit must be located a minimum
of 25 feet away from the spraying area in a well ventilated area. Ventilation
must be sufcient enough to prevent the accumulation of vapors.
2To eliminate electrostatic discharge, ground the spray unit, paint bucket and
spraying object. See GROUNDING. Use only high pressure airless hoses
approved for 3000 psi which is conductive.
3Remove the spray tip before ushing. Hold the metal part of the gun rmly to
the side of a metal pail & use the lowest possible fluid pressure during flushing.
4Never use high pressure in the cleaning process. USE MINIMUM PRESSURE.
5Do not smoke in spraying/cleaning area.
NEVER use cleaning solvents with ash points below 60°C/140°F.
Examples of these are:
acetone, benzene, ether, gasoline, naphtha.
Consult your supplier if in doubt.
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QTech QT830 Airless Sprayer

ASSEMBLY
1Attach the hose to the pump and tighten with a wrench.
2Attach the hose to the gun and tighten with two wrenches.
OPERATION
Before starting always check and tighten all ttings securely.
WARNING: A loose connection could burst loose under pressure causing a
hazardous condition. Ensure that all connections are tight. This includes both
ends of the hose, the gun lter, the tip guard, the manifold lter and the suction
tube gland nut.
WARNING: Always ensure that the gun safety latch is in the locked position.
The gun safety latch should always be set. The only time the trigger should be
unlocked is when the gun is actually being triggered.
Leave the tip out of the gun when
priming, ushing and cleaning.
LUBRICATE THE PACKINGS
Fill the packing nut/wet cup with
about 2-3 drops of QTech
QLube lubricating oil.
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Gun safety latch
Gun trigger
THE ENGINE
For more detailed information about the engine, its operation and maintenance,
refer to the engine owner’s annual, which is included separately with this machine.
The engine supplies the mechanical power to run the pump. It couples to the
pump through a clutch. To maintain, the required pump operating pressure, the
clutch is engaged and disengaged electromagnetically by the pressure control
system. The electrical power for this is supplied by the engine’s charging system.
STARTING THE ENGINE (see illustration over page)
+ Ensure that there is the correct type and amount of motor oil in the sump. The
recommended type is 10W-30, four stroke automotive detergent motor oil of API
service category SJ or equivalent. Use the oil filler cap/dipstick to check the level.
+ Add the correct type of fuel. The recommended fuel is unleaded petrol
(gasoline) octane 91 or higher. Do not overll.
+ Move the fuel valve lever to the ON position.
+ Set the throttle lever to about 1/3.
+ If the engine is cold, move the choke lever to the CLOSED position. (If the
engine is warm, leave the choke in the OPEN position).
+ Turn the engine ignition switch clockwise to the ON position.
+ Pull the recoil starter grip lightly until compression is felt, then pull briskly and
deliberately to start the engine (do not allow the grip to snap back under its
own spring tension; but rather gently return it to its rest position).
+ As soon as the engine starts, gradually move the choke lever to the OPEN
position as the engine warms up.
SETTING THE THROTTLE
+ For spraying, set the throttle lever to about 2/3 as a starting point.
Increase or decrease the throttle as required.
+ Generally, larger tips and/or multiple guns will require a higher throttle
setting. Smaller tips with a single gun may only need 2/3 throttle or less.
NOTE: If the throttle is set too low, the engine’s charging system will not have
enough voltage to run the pump control system and you may see an error code.
In this case increase the throttle setting higher.
CAUTION: The throttle should not be set any higher than is necessary to maintain,
the set pressure. If the throttle is set too high, the clutch will be forced to cycle on
and off in rapid succession which will lead to premature clutch wear and failure.
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QTech QT830 Airless Sprayer

SHUTTING OFF THE ENGINE
+ Move the throttle lever to the
MIN position.
+ Turn the engine ignition switch anti-
clockwise to the OFF position.
+ Move the fuel valve lever to the
OFF position.
OPERATING THE PUMP CONTROL SYSTEM
+ First start the engine. The engine needs
to be running to provide electrical
power to the pump control system.
+ Turn pressure control knob counter
clockwise to the minimum setting.
+ Turn on the pump control switch.
+ Viewing the LCD display, adjust the
pressure control knob to the
desired pressure. The pump control
system will now automatically engage
and disengage the clutch as needed
to maintain the desired pressure.
VIEWING THE ELAPSED HOURS DISPLAY
+ First start the engine and leave the
pump control switch OFF.
+ Reach behind the control box, press
the hours display button and hold
for 3 seconds.
+ The total elapsed hours will appear
in the LCD display.
+ Turn the pump control switch ON
and continue normally.
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Hours display
button (on
back of
control
box)
Pressure
control
knob
LCD
display
Pump
control
switch
Throttle lever
Choke lever
Fuel valve lever
FLUSHING
WHEN TO FLUSH
1When cleaning pump (for further detail turn to page 22).
2When changing from oil-base to water-base paint. Flush with pump
conditioner, followed by soapy water, then a clean water ush.
3Storage. Always relieve pressure (see PRESSURE RELIEF PROCEDURE
page 8) prior to storage or when machine is unattended.
Oil-base paint: Flush with pump conditioner. Ensure that there is no pressure
in the unit, then close the priming valve.
Water-base paint: Flush with water, and then pump conditioner.
If pump is to be left for more than a day in storage ensure ushing
procedure has been followed and leave lled with pump conditioner.
Always ensure that there is no pressure in the unit, and close the prime/
pressure relief valve for storage.
4Start-up after storage. Before using water-base paint, ush with soapy
water and then with clean water. When using oil-base paint, ush out the
pump conditioner with the material to be sprayed.
HOW TO FLUSH
1Place the suction tube in a ushing bucket lled with pump conditioner (for
oil-based paints), water (for water-based paints) or warm soapy water (when
converting from oil-based to water-based paints).
2Separate the drain tube from the suction tube and place it in an empty
waste bucket.
3Open the priming valve.
4Ensure that the pump control is switched off and the pressure control knob is
at the minimum (anticlockwise) setting.
5Start the engine, set the throttle to about 2/3, and switch on the pump control.
6Turn the pressure control know clockwise to increase the pressure just
enough to let the pump run.
7Allow the pump to run and watch the uid discharging from the drain tube.
Allow the uid to discharge until completely clean ushing uid is coming
out. The hose and gun also need to be ushed when changing colours or
when switching between different types of paints.
(If the hose and gun do not need ushing, proceed to step 11, over page).
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QTech QT830 Airless Sprayer

FLUSHING (continued)
8With the tip and guard removed from the gun, point the gun into the waste
bucket and hold the trigger open.
WARNING: Risk of static sparking, re or explosion. Hold the metal part of
the gun rmly to the side of a metal pail. All solvent pails must be conductive
metal material and properly grounded. Do not place on a non-conductive
insulating surface unless a ground wire is added to a true earth such as a
metal water pipe.
9Close the priming valve.
10 Allow the pump to run and watch the uid discharging from the gun. Allow
the uid to discharge until completely clean ushing uid is coming out.
WARNING: Do not release the gun trigger during this process. If the trigger
is released, pressure will build in the line and when the trigger is re-squeezed
it may result in a splash back hazard.
11 Switch the pump control off and turn the pressure control knob anticlockwise to
the minimum setting. The pump is now clean and ready to be primed with material.
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PRIMING
This is a high pressure pump and all air and unwanted uids must be bled out of
the pump and lines before spraying can begin. Ensure that the tip and guard are
removed from the gun and the trigger is locked.
TO PRIME
1Place the suction tube in the paint bucket.
2Place the drain tube in a waste bucket and open the priming valve.
3Ensure that the pressure control knob is in the minimum position and the unit
is switched off. Start the engine, set the throttle to about 2/3, and switch on
the pump control.
4Slowly turn the pressure control knob clockwise to increase the pressure just
enough to let the pump run.
5Allow the pump to run and watch the uid discharging from the drain tube.
Allow the uid to discharge until pure material is owing.
6Point the gun into the waste bucket, unlock the trigger and hold the trigger
open. Then close the priming valve.
7Keep the trigger held open and allow the pump to run and watch the uid
discharging from the gun. Allow the uid to discharge until pure material is
owing. Turn the pump control off.
8To further bleed out any air, point the gun into the material bucket or hopper
and hold the trigger open. Turn the pump control on and allow clean material
to recirculate. Watch the material to make sure there are no air bubbles.
9Turn off the pump control and lock the trigger. The drain tube may now be
rejoined to the suction tube in the material bucket.
The unit is now primed and ready to install the tip and tip guard.
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QTech QT830 Airless Sprayer

SPRAY GUN
Attach spray gun to airless unit and tighten ttings securely. Set the gun safety
latch. The gun safety latch should always be set when the gun is not being
triggered. Read all warnings and safety precautions supplied with the spray gun
and in product manual.
SPRAY TIP ASSEMBLY
1Be sure PRESSURE RELIEF
PROCEDURE is followed before
assembling tip and housing to
the gun.
2Lock gun safety latch.
3Insert Tip into the guard housing
assembly. Rotate the tip to the forward
position (the arrow on the tip handle will point forward).
4Guide metal seat into guard housing
assembly through retaining nut and turn
until it seats against the cylinder.
5Insert O-Ring gasket on metal seat so it ts in the grooves.
6Finger tighten guard housing retaining nut onto the gun.
7Turn guard to the desired position.
8Completely tighten the retaining nut by hand only.
TO REMOVE CLOGS FROM SPRAY TIP
1Lock gun safety latch.
2Turn tip handle 180 degrees.
3Disengage trigger lock & trigger gun into pail.
4If the tip handle appears locked loosen the retaining nut. The handle will now
turn easily.
5Engage gun safety latch and return handle to the spray position.
WARNING: Never attempt to spray with the tip in any position in-between either
fully forward or fully reversed. It could cause a high pressure hazard.
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QTechSpray.com
Even coat throughout
SPRAYING
Check the quality of the spray pattern on a piece of scrap material, such as
cardboard. Turn the pressure control knob clockwise to increase pressure and
counterclockwise to decrease pressure. Start with a low spray pressure and
slowly increase the pressure until a good spray pattern is achieved. If the
pressure is too low, the pattern will have “tails”, which is a pattern with heavy,
uneven edges. Keep testing and increasing pressure until a smooth, regular
pattern is achieved. If the pressure is at maximum and the pattern is still not
ideal, either go to a smaller orice tip or thin the material. Do not raise the
pressure any higher than is necessary. Operating the sprayer at a higher than
necessary pressure wastes material, causes early tip wear, and shortens sprayer
life. Excessive pressure can also result in bounce-back of the material and a
rough nish. (Running with the pressure at the absolute maximum setting will
also make the pump run on and off in an irregular way).
NOTE: Do not rely only on the readout to set the pressure. The preferred method
of setting the pressure is to test spray on scrap materials and observe the spray
pattern. While spraying, hold the gun perpendicular about 25-30 cm (10-12 inches)
away from the surface. Do not swing or tilt the gun.
Trigger the gun before moving and release the trigger afer each stroke. Overlap
each previous stroke by half. Do this by aiming the tip to the edge of the previous
stroke. Work in sections within your reach. When painting corners, point the gun
parallel to the corner. Cut in edges and corners rst. Then paint at areas. Do not
allow the paint to run out. Remember to follow the PRESSURE RELIEF PROCEDURE
before refilling material. If the paint does run out, the pump will suck in air.
This air must be bled out, follow the instructions for PRIMING.
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QTech QT830 Airless Sprayer
Light coat Light coatHeavy coat
Incorrect | Wrist being exedCorrect | Gun held perpendicular
Approximately 10 - 12 inches

SPRAY TIP SELECTION
Spray tip selection is based on paint viscosity, paint type and job requirements.
There are two variables that need to be identied - the tip orice size and the
fan pattern width.
The main variable is the tip orice. Generally use a smaller orice tip for light
viscosities (thin coatings such as varnish) and a larger orice tip for heavier
viscosities (thicker materials such as masonry, intumescents etc). Spray tip
orice size is based around how many gallons of paint per minute can be
sprayed through the tip. At no time should a tip that can accommodate a ow
rate larger than the maximum of the pump be used.
The other variable is the fan pattern width. Two tips having the same orice tip
size, but different fan widths will deliver the same amount of paint over a
different area (width of strip). A spray tip with a narrower fan width makes it
easier to spray in tight places. The thickness of the coat of paint per stroke is
determined by spray tip fan width, rate of the spray gun movement and the
distance to the surface.
The numbers that a tip is identied by indicate the fan width and the orice size.
The rst number is half the fan width in inches. The second two numbers identify
the orice size in thousandths of an inch. For example, a 517 tip would have
a 10” fan width with a 0.017” orice.
ATOMIZATION PRESSURE
The atomization pressure is the pressure at the gun. This will always be lower than
the pressure at the pump due to the viscosity of the paint - other variables that
will cause a pressure drop are the gun, the length and diameter of the hose, the
temperature and the humidity.
With these variables in mind, the operator will need to fine tune the pressure to
suit the actual conditions of the situation.
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QTechSpray.com
SPRAY TIP REPLACEMENT
During use, especially with latex paint, grit and impurities in the paint under high
pressure will cause the orice to grow larger from wear and for the fan pattern
width to degrade.
It is easy to determine the state of wear of the tip by observing the fan pattern.
As the tip wears, the fan width will become narrower. A new tip will have a
pattern shaped like a narrow long rounded-corner rectangle. As it wears it will
turn into an oval shape. When it is completely worn out it sprays a circle.
Once the fan width has decreased to about 2/3 of its original size, it should be
considered worn out.
NOTE: To minimize wear to the tip, piston, packings and seats, it is best to
always strain paint before use with a paint strainer bag and regularly clean all
lters and strainers.
Replace tips before they become excessively worn. Worn tips waste paint, cause
overspray, make cutting-in difcult, and decrease sprayer performance. If the tip
is the maximum rated size for your sprayer, when it wears, the ow rate capacity
will exceed that of the machine. If when using the maximum capacity tip size the
pump cannot keep up, then you know that the tip is worn beyond capacity.
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QTech QT830 Airless Sprayer

CLEANUP
At the end of the day, the material in the line should be recovered and the
machine thoroughly cleaned. This will avoid material drying in the pump or hose.
CAUTION: Under no circumstances allow material to dry in the pump. If material
dries in the pump and hose, the pump will need to be completely
disassembled and rebuilt and the hose will need to be discarded and replaced.
1Relieve pressure in the system according to the Pressure Relief Procedure.
2Remove the tip and tip guard and soak in the appropriate solvent for the
material being used.
3 Rinse off the suction tube and place in a bucket of the appropriate ushing
solvent uid. Usually this will be water (for water-based materials),
conditioner (for oil-based materials) or lacquer thinner (for lacquers). Special
ushing uids may be required for component materials or epoxies, etc.
4 To reclaim the material in the pump, place the drain tube in the original
material bucket. With the priming valve still in the open position, turn the
pump control on and turn the pressure control knob clockwise just enough to
run the pump. Watch the material discharging from the drain tube until the
material begins to thin. This indicates that the ushing uid is beginning to
pump out. Now transfer the drain tube to the waste bucket and continue to
ush until clear ushing uid ows out.
5 Shut off the pump control and back off the pressure control knob to minimum.
Close the priming valve.
6 To reclaim the material in the line, with the tip and guard removed, point the
gun into the material bucket and hold the trigger open.
7Place the waste bucket right next to the material bucket.
8Ensure that the pressure knob is in the minimum position and turn the pump
control on.
9With the trigger held open, slowly turn the pressure knob clockwise to
increase the pressure just enough to let the pump run.
10 Allow the pump to run and watch the material discharging from the gun.
Allow the material to discharge until the material begins to thin. This
indicates that the ushing uid is coming up the hose.
11 Without releasing the trigger, quickly transfer the gun from the material
bucket to the waste bucket next to it.
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QTechSpray.com
WARNING: Do not release the gun trigger during this process. If you release
the trigger, pressure will build in the line and when you re-squeeze the trigger
there will be a splash back hazard.
12 Keep the trigger held open and allow the pump to run and watch the uid
discharging from the gun. Allow the uid to discharge until all traces of
material are gone and pure ushing uid is coming out.
13 Without releasing the trigger, transfer the gun to the flushing bucket and allow
the ushing uid to recirculate for 2-3 minutes to make sure that all traces of
the material are cleaned out.
14 Turn off the pump control and shut off the engine. Open the priming valve to
relieve residual pressure.
15 Remove the suction tube out of the ushing uid.
16 Clean the inlet strainer or hopper strainer. Remove and clean it with a soft
brush in the appropriate solvent and replace.
17 Clean the pump lter. Using the supplied wrench, remove the pump lter and
clean it with a soft brush in the appropriate solvent. Then replace and tighten.
18 Clean the gun, tip, and gun lter. Unclip the hand guard and rotate it out of
the way. Then, using a wrench loosen the nut on the bottom of the handle
and remove the handle to remove the gun lter. Clean the tip and lter with a
soft brush in the appropriate solvent. Apply a small amount of light oil such
as WD-40 to the inside of the spray gun housing. Place the lter in the spray
gun and reassemble the unit by tightening the nut with the wrench.
19 Clean the exterior of the sprayer with a rag soaked in the appropriate solvent.
20 If flushing was with water, flush again with mineral spirits to prevent corrosion
inside the pump.
CAUTION: Never leave water in the pump for any length of time as corrosion
will result
LONG TERM STORAGE: For long- term storage, ll the pump with conditioner.
To ll the pump:
1Place both the suction tube and drain tube in a small quantity of storage solution.
2With the priming valve in the open position, turn the machine on and turn the
pressure control knob just enough for the pump to run.
3Watch the drain tube and as soon as the storage solution appears in the tube,
shut the machine off and close the priming valve. This will trap the storage
solution inside the pump to protect it.
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QTech QT830 Airless Sprayer

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QTechSpray.com
MAINTENANCE
CAUTION: Never lay the pump on its back. Paint could ow backward and
damage the electronics or the engine.
WEEKLY MAINTENANCE
1Ensure the displacement pump packing nut is lubricated with piston lubricant
at all times. This helps to protects the piston, rod and packings. In normal
usage ve drops once a week should be sufcient.
2Inspect the packing nut. If either of the following conditions exist the
packing nut should be tightened
a Seepage of material past the packing is found.
b While the system is pressurized during the intervals when the motor is not
running the piston is not holding its position but rather tends to slip
downward.
To tighten the packing nut: First loosen the buttery bolt 26 and raise the
fence 28. Now reach the tommy bar through the opening and tighten the
packing nut a small amount. When nished, reclose the fence.
CAUTION: The packing nut should be tightened just enough to stop leakage
only, but not any tighter. Overtightening will damage the packings and reduce
packing life.
3 Clean the intake ball and seat.
a Remove the suction assembly and check ball housing.
b Remove the check ball and ball guide and clean all related parts.
c Replace in reverse and tighten.
ENGINE MAINTENANCE
Maintain the engine according to the instructions in the engine instruction
manual.
1 Check the engine oil level at least once a week.
2 The engine oil should be changed after the rst 20 hours of operation
(break-in period). Thereafter, it should be changed every 100 hours.
NOTE: All engine repairs should be entrusted to an authorised service centre.
27
QTech QT830 Airless Sprayer
PACKINGS
The packings are a wearing part. If the pump can no longer maintain pressure,
has difculty priming and paint seeps into the throat of the pump, and
tightening the packing nut no longer helps, then the packings will require
replacement. This is best entrusted to a qualied repair technician.

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QTechSpray.com
LCD screen error codes
Error
Code
Cause Effect How to return to
operation
Solution
E03 Excess voltage
from the
engine’s
charging system
to the pressure
control system
Clutch will
disengage
and pressure
control system
will shut off
When voltage
is normal, will
automatically
return to
operation
Check the
engine’s
charging
system
E05 Pressure sensing
abnormality or
no signal from
sensor
Clutch will
disengage
When
pressure signal
is normal, will
automatically
return to
operation
Check pressure
transducer and
check for bad
connections
with transducer,
LCD or PC
board
E07 Engine was
started with he
pressure control
switch in the
ON position
Clutch will not
engage
Switch the
pressure control
OFF and then
ON again to
reset
No further
action required
E08 Paint has
run out
Clutch will
disengage
Rell the paint,
then switch the
pressure control
OFF and then
back ON again
to reset
No further
action required
E09 Maximum
pressure
exceeded
Clutch will
disengage
When
pressure signal
is normal, will
automatically
return to
No further
action required
29
QTech QT830 Airless Sprayer
Wiring

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QTechSpray.com
QTech QT830
31
QTech QT830 Airless Sprayer

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QTechSpray.com
ITEM PRODUCT CODE DESCRIPTION QTY
1INLET STRAINER (4MESH-105L) 1
2GLAND NUT 1
4INTAKE DISC 1
6CHECK BALL (3/4") 1
7SPRING (Ø0.6xØ12.3xØ13.5x5Tx20L) 1
8BALL GUIDE 1
10 INTAKE DISC SEAT 1
11 BALL SEAT (Ø11xØ17x3) 1
12 PISTON PACKING 1
13 DISC SPRING (Ø25xØ34.7x1) 4
14 CHECK BALL (Ø12.7) 1
15 DISPLACEMENT PISTON (260.3L) 1
16 PACKING SET HOLDER 1
17 PUMP HOUSING (218.7L) 1
18 OUTPUT NIPPLE (PT 3/8" x 3/8"-19PF) 3
19 PACKING SET SEAT (Ø41.5 x 25) 1
20 PACKING NUT (M45xP2.0) 1
21 PUMP CARRIER CLAMP 1
22 SOCKET CAP SCREW (M10x50xP1.5) 4
23 SPRING WASHER (M10) 4
24 T-HANDLE BOLT 1
25 PANHEAD MACHINE SCREW (M6x10xP1.0) 1
26 BUTTERFLY SCREW (M6x10xP1.0) 1
27 FLAT WASHER (Ø6.5xØ13x1) 2
28 FENCE 1
29 BUSHING (Ø48xØ54x43) 1
30 BUSHING (Ø48xØ54x43) 1
31 GUIDE CYLINDER PLATE 1
32 TRUSS HEAD MACHINE SCREW (M5x8xP0.8) 4
33 RETAINING RING (Ø1.5xØ44xØ47) 1
34 PUMP WRIST PIN (Ø12x52) 1
35 PUMP WRIST PIN (Ø20x42) 1
36 DRIVE PISTON 1
37 CONNECTING ROD 1
38 NEEDLE BEARING (TA2830) 1
39 SPINDLE 1
40 PARALLEL KEY (6x6x20) 2
41 NEEDLE BEARING (TA4540) 1
42 FLAT HEAD MACHINE SCREW (M5x12xP0.8) 2
43 MOUNTING TENON (10x10x100) 1
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QTech QT830 Airless Sprayer
ITEM PRODUCT CODE DESCRIPTION QTY
44 SOCKET CAP SCREW (M5x25xP0.8) 4
45 GEAR CAP 1
46 GEAR HOUSING 1
47 SOCKET CAP SCREW (M8x50xP1.25) 6
48 SPRING WASHER (M8) 16
49 CLUTCH BRASS DISC (Ø46xØ63x2) 1
50 OUTPUT GEAR (M2.5x72T) 1
51 CLUTCH NUT (M30xP2.0) 1
52 NEEDLE BEARING (TA2525) 1
53 NEEDLE BEARING (TA2020) 2
54 THRUST RING (Ø20.5xØ32x1) 3
55 INPUT SHAFT (M2.5x14T) 1
56 PARALLEL KEY (5x5x12) 2
57 INPUT GEAR (M1.5x59T) 1
58 SOCKET CAP SCREW (M4x20xP0.7) 8
59 GEAR PLATE 1
60 NEEDLE BEARING (HK 3020) 1
61 NEEDLE BEARING (HF 3020) 1
62 SPINDLE 1
63 BALL BEARING (6206) 1
64 INTERNAL CIRCLIP (R-62) 1
65 MAGNET BODY 1
67 FRICTION DISC 1
68 SOCKET CAP SCREW (M4x12xP0.7) 4
69 SPRING WASHER (M4) 4
70 PRESSURE PLATE 1
71 WAVE SPRING WASHER (Ø47xØ60.2) 2
72 HUB 1
73 DRIVE DISC 1
74 SOCKET CAP SCREW (M6x25xP1.0) 2
75 ENGINE COUPLING 1
76 SOCKET CAP SCREW (M6x20xP1.0) 4
77 HEX BOLT (5/16"x1-1/2"-24T) 4
78 CLUTCH HOUSING 1
79 SOCKET CAP SCREW (M5x8xP0.8) 2
80 COVER PLATE 1
81 SOCKET CAP SCREW (M8x35xP1.25) 2
82 ENGINE 1
84 FITTING (PT1/4" x 9/16"-18) 1
85 PRESSURE TRANSDUCER (110V&220V) 1

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QTechSpray.com
ITEM PRODUCT CODE DESCRIPTION QTY
86 BRACKET 1
87 SOCKET CAP SCREW (M5x16xP0.8) 4
88 PRIMING VALVE 1
89A PUMP FILTER (30MESH) 1
89B PUMP FILTER (60MESH) 1
89C PUMP FILTER (100MESH) 1
90 FILTER CAP 1
91 HIGH PRESSURE HOSE (3/8"-19PF) 1
92 FILTER HOUSING 1
93 HANDLE 1
94 ROLL PIN (Ø5x30) 2
95 HANDLE MOUNT 2
96 FLAT WASHER (Ø22.5xØ30x2) 2
97 FRAME 1
98 END CAP 2
99 FLAT WASHER 4
100 WHEEL 2
101 M5x20 2
102 HEX BOLT (M6x16xP1.0) 2
103 SOCKET CAP SCREW (M5x20xP0.8) 4
104 PANHEAD TAPPING SCREW-B (M5x16) 2
105 CONTROL DIAL 1
106 CONTROL BOX COVER 1
107 RHEOSTAT 1
108 SWITCH 1
109 ELECTRONICS UNIT 1
110 WINDOW (76x42x2) 1
111 LCD DISPLAY 1
112 PANHEAD TAPPING SCREW (M4x8) 4
113 SOCKET CAP SCREW (M8x16xP1.25) 2
114 HEX BOLT (M8x35xP1.25 2
115 NYLOCK NUT (M8xP1.25) 2
116 PUSH BUTTON SWITCH 1
117 CABLE GLAND (SB5F-3) 2
118 CABLE GLAND (SB5M-1) 1
119 GROMMET 1
120 SOCKET CAP SCREW (M4x6xP0.7) 4
121 SOCKET CAP SCREW (M5x12xP0.8) 6
122 MOUNTING BRACKET 2
123 TOOL BOX 1
35
QTech QT830 Airless Sprayer
ITEM PRODUCT CODE DESCRIPTION QTY
124 TOOL BOX LID 1
125 HINGE PIN (Ø3x230) 1
126 TOOL BOX LOCK 1
127 HIGH PRESSURE HOSE 1
128 LUBRICATING OIL TANK 1
129 DUAL PURPOSE WRENCH 1
130 PACKING NUT TOMMY BAR 1
131 DRAIN TUBE 1
132 SUCTION HOSE SET 1
133 BOLT (PT 3/8") 1
134 EARTH WIRE 1
135 CONNECTION CABLE 1
136 INLET STRAINER (8MESH) 1
137 SWITCH WIRES 2
138 NYLOCK NUT (M5xP0.8) 8
139 SOCKET SET SCREW (M4x8xP0.7 1