Campbell Hausfeld AL2710 User Manual
Airless Paint
Systems
Please read and save these instructions. Read carefully before attempting to assemble, install, operate or maintain the product described.
Protect yourself and others by observing all safety information. Failure to comply with instructions could result in personal injury and/or
property damage! Retain instructions for future reference.
Operating Instructions and Parts Manual
IN422400AV 12/02
Thank you for purchasing a Campbell Hausfeld product. If you have any technical
questions about this product, please call 1-800-626-4401.
For Parts and Accessories: 1-800-626-4401
AL2710
For parts, product & service information
visit www.chpower.com
© 2002 Campbell Hausfeld/Scott Fetzer
REMINDER: Keep your dated proof of purchase for warranty purposes! Attach it to this manual or file it for safekeeping.
BUILT TO LAST
2
Operating Instructions and Parts Manual
Airless Paint Systems
Description
Airless paint sprayers are capable of
spraying a wide variety of latex, oilbased, and alkyd paints, as well as
stains, preservatives and other nonabrasive finishes.
These sprayers are also powerful and
versatile enough to be used with a
variety of options (roller attachment,
extra lengths of hose, etc.) to make it
an even more efficient tool.
NOTE: Guns pictured in illustrations
may be different than the one included
with your unit.
Safety Guidelines
This manual contains information that
is very important to know and
understand. This information is
provided for SAFETY and to PREVENT
EQUIPMENT PROBLEMS. To help
recognize this information, observe the
following symbols.
Danger indicates
an imminently
hazardous situation which, if not
avoided, WILL result in death or serious
injury.
Warning indicates
a potentially
hazardous situation which, if not
avoided, COULD result in death or
serious injury.
Caution indicates a
potentially
hazardous situation which, if not
avoided, MAY result in minor or
moderate injury.
Notice indicates
important
information, that if not followed, MAY
cause damage to equipment.
Unpacking
After unpacking the unit, inspect
carefully for any damage that may
have occurred during transit. Make
sure to tighten fittings, bolts, etc.,
before putting unit into service.
Do not operate
unit if damaged
during shipping, handling or use.
Damage may result in bursting and
cause injury or property damage.
General Safety
Information
1. Read all manuals included with this
product carefully. Be thoroughly
familiar with the controls and the
proper use of the equipment.
2. Always wear a mask or respirator
and eye protection when painting.
Be certain mask or respirator will
provide necessary protection
against inhalation of harmful
vapors.
3. Keep visitors away and NEVER allow
children or pets in the work area.
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Table of Contents
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Safety Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
General Safety Information . . . . . . . . . . . . . . . . . . . . . . .2
Pre-Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Flushing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Setting Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Spray Tip Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Starting Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Spray Technique . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Electrical System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Electical Board Calibration . . . . . . . . . . . . . . . . . . . . .8
Electrical Troubleshooting . . . . . . . . . . . . . . . . . . . . . .9
Replacement of Electrical Components . . . . . . . . . .10
Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Spray Gun . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Fluid Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Gear and Pump Assembly . . . . . . . . . . . . . . . . . . . . .11
Piston Rod, Upper Check Valve . . . . . . . . . . . . . . . . .12
Lower Suction Valve . . . . . . . . . . . . . . . . . . . . . . . . . .12
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Regular Maintenance . . . . . . . . . . . . . . . . . . . . . . . . .12
Electric Motor Maintenance . . . . . . . . . . . . . . . . . . .12
V-Packing Replacement . . . . . . . . . . . . . . . . . . . . . . .12
Troubleshooting Charts . . . . . . . . . . . . . . . . . . . . . . . . .14
Parts Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Parts Lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
Specifications
Max. Pressure . . . . . . . . . . . . . 3000 psi
Output (Free Flow) . . . . . . . . . 0.8 GPM
Output (At Pressure). . . . . . . . 0.6 GPM
Tip Size. . . . . . . . . . . 1 gun up to 0.023
Motor Output. . DC. TEFC. 1.3 HP Peak
Weight . . . . . . . . . . . . . . . . . . . . 65 lbs.
AL2710
!
DANGER
!
WARNING
!
CAUTION
NOTICE
!
WARNING
Airless Paint Systems
3
Operating Instructions and Parts Manual
General Safety
Information
(Cont.)
4. Do not smoke or eat when spraying
paint, insecticides, or other
flammable substances.
5. Always work in a clean
environment. To avoid injury and
damage to the workpiece, do not
aim the spray gun at any dust or
debris.
6. When spraying and cleaning,
always follow the instructions and
safety precautions provided by the
material manufacturer (Refer to
MSDS).
ELECTRICAL SHOCK HAZARD:
● Follow all local electrical and safety
codes, as well as the National
Electrical Code (NEC) and in the
United States, the Occupational
Safety and Health Act (OSHA).
● This product requires a grounded
120V, 15 Amp circuit (See Figure 1).
● If the power receptacles available
will not fit this equipment’s power
cord, then have an appropriate
power receptacle installed by a
certified electrician.
● Only qualified electricians or
service personnel should perform
maintenance on the electrical
components of this equipment.
● If using an extension cord, use only
grounded three wire extension cords
that are in good condition. See
Table 1 on page 4 for information
on proper extension cord gauges.
● Do not modify any of
the electrical
components of this
equipment.
● Do not use a power cord adapter
with this equipment.
● Check with a qualified electrician
or service person if the grounding
instructions are not completely
understood or you are in doubt as
to whether the equipment is
properly grounded.
SKIN INJECTION HAZARD:
● High pressure spray
can inject toxins
into blood stream.
If injection occurs,
seek emergency medical treatment.
Use a face mask/respirator
and protective clothing
when spraying. Always
spray in a well ventilated
area to prevent health and fire
hazards. Refer to Material Safety Data
Sheets (MSDS) of spray material for
details.
● Never try to stop leaks with any
part of your body.
● This system is capable of producing
3000 psi. Use only Campbell
Hausfeld replacement parts rated
at 3000 psi or higher.
● Never spray without tip guard.
● Ensure trigger lock is functioning
properly.
● Always engage trigger lock when
not spraying.
● Do not remove spray tip while
cleaning pump.
● Never leave equipment pressurized
while unattended.
● Do not clean spray tip while it is
attached to the spray gun. Remove
spray tip from gun to clean tip
guard.
● Ensure tightness of high pressure
connections.
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PRESSURE RELIEF PROCEDURE
Before servicing or resting unit,
relieve pressure from system by
following this procedure:
1. Engage gun trigger lock.
2. Turn unit off and disconnect
power.
3. Disengage gun trigger lock.
4. Trigger gun
into
grounded
pail to relieve
pressure in
hose and
gun. While doing so, hold metal
part of gun in contact with pail.
Use the smallest amount of
pressure possible.
5. Turn
Prime/Pressure
Relief Valve
(PR Valve) to
the open
(priming)
position to
relieve
pressure.
NOTE: There will be a wider gap
between valve handle and cam
body when in open position.
6. Engage gun trigger lock. Close
Prime/Pressure Relief Valve.
NOTE: If spray tip or hose is clogged,
follow step 1 to 5. If you suspect
pressure has not been relieved after
following this procedure, take your
unit to a Campbell Hausfeld Service
Center.
Wide Gap
Slight Gap
Grounded
Outlet
Grounded Outlet
Box
Grounding Pin
Figure 1 - Grounding
AL2710
!
DANGER
RESET
TEST
!
WARNING
!
WARNING
4
Operating Instructions and Parts Manual
Airless Paint Systems
General Safety
Information
(Cont.)
● Do not use pliers to tighten or
loosen high pressure connections.
● Motor is equipped with an automatic
thermal overload. Motor will restart
without warning, after cooling.
Never aim or
spray at yourself
or anyone else or serious injury could
occur.
FIRE OR EXPLOSION HAZARD:
● Do not use solvents with flash
points less than 70°F (21°C) to clean
this equipment (examples of
acceptable cleaning solvents are
water, mineral spirits, lacquer
thinner, Xylene and high flash
napha. A partial example list of
unacceptable cleaning solvents are
low flash napha, mek, acetone,
alcohol and toluene).
Do not spray flammable
materials in vicinity of
open flame or near
ignition sources. Motors, electrical
equipment and controls can cause
electrical arcs that will ignite a
flammable gas or vapor. Never store
flammable liquids or gases in the
vicinity of the unit.
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Do not spray acids,
corrosive materials,
toxic chemicals, fertilizers or
pesticides. Using these materials could
result in death or serious injury.
● Paints and solvents containing
HALOGENATED HYDROCARBONS can
react explosively with aluminum. Do
not use halogenated hydrocarbons
with this equipment. Consult the
paint or solvent product label or
Material Safety Data Sheets (MSDS)
to help determine if it contains
halogenated hydrocarbons.
● Do not use fuels to clean this
equipment.
● Keep spraying area well ventilated.
Keep doors and windows open.
● Remove all ignition sources (i.e.
Static electricity, pilot lights,
cigarettes and electrical arcing).
● Airless spraying can cause static
electricity. Always ground the
pump and spraying surface. Always
use a 3-wire grounded extension
cord and power receptacle.
● Do not use solvents containing
halogenated hydrocarbons.
Keep hose away
from sharp objects.
Bursting hoses may cause injury.
Examine hoses regularly and replace if
damaged.
● Check hoses for weak or worn
condition before each use, making
certain that all connections are
secure.
Pre-Operation
FLUSHING
1. NEW SPRAYER:
Your sprayer was
factory tested in an oil solution which
was left in the pump. Before using oilbased paint, flush with mineral spirits
only.Before using water-based paint
flush with mineral spirits, followed by
soapy water, then a clean water flush.
2. CHANGING COLORS:
Flush with a
compatible solvent such as mineral
spirits or water.
3. CHANGING FROM WATER-BASED TO
OIL-BASED PAINT: Flush with soapy
water, then mineral spirits.
4. CHANGING FROM OIL-BASED TO
WATER-BASED PAINT:
Flush with
mineral spirits, followed by soapy
water, then a clean water flush.
5. STORAGE:
Always relieve pressure
(See pressure relief procedure on
page 3) prior to storage or when
machine is unattended. Follow the
storage procedure based on the kind
of paint you used:
● Oil-based paint: Flush with mineral
spirits. Make sure that there is no
pressure in the unit. Then close the
prime/pressure relief valve.
● Water-based paint: Flush with
water, then mineral spirits. For
longer term storage use a 50/50
mixture of mineral spirits and
motor oil. Always ensure that there
Length of Cord (Ft.)
25 50 100 150 200 250 300 400 500
18 16 12 12 10 10 8 8 6
18161210108666
1814121088664
161410886644
Extension Cord Requirements
5 - 6
6 - 8
8 - 10
10 - 12
Amperage
Rating
G
A
U
G
E
Table 1 - Extension Cord Gauges
AL2710
!
WARNING
!
WARNING
!
WARNING
!
WARNING
!
CAUTION
Airless Paint Systems
5
Operating Instructions and Parts Manual
Pre-Operation (Cont.)
is no pressure in the unit, and close
the prime/pressure relief valve for
storage.
Never leave pump
unattended while it
is under pressure!
6. START UP AFTER STORAGE:
Before
using water-base paint, flush with
soapy water and then a clean water
flush. Before using oil-base paint,
flush out the mineral spirits with
the material to be sprayed.
HOW TO FLUSH
IMPORTANT COMPONENTS
● Prime/Pressure
Relief Valve
(Prime/PR
Valve, Figure
2). Used to
relieve
pressure from
gun, hose and
tip and to
prime the unit
when in OPEN
position. (It is in open position
when there is a wider gap between
valve handle and cam body.) When
in CLOSED position, there is only a
very slight gap between handle and
body. When closed, the system is
pressurized.
● Pressure
Control Knob
(Figure 3).
Used to adjust
pressure. Turn
clockwise to
increase pressure and
counterclockwise to decrease it.
● Toggle Switch (Figure 4).
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PROCEDURE
1. Make sure the gun trigger lock is
engaged and there is no spray tip in
the gun. Refer to Figure 5. (Refer to
Figure 10 for information on how
to lock the trigger lock and the
gun's safety features.)
To reduce the risk
of static sparking,
which can cause fire or explosion,
always hold a metal part of the gun
firmly against the grounded pail when
flushing. (This also reduces splashing.)
2. Pour enough clean, compatible
solvent into a large, empty pail to
fill the pump and hoses.
3. Place the suction tube into the pail.
4. Turn the Prime/Pressure Relief (PR)
Valve to the "OPEN" , priming
position. Refer to Figure 3.
5. Point the gun into the pail and hold
a metal part of the gun firmly
against the pail. Refer to Figure 6.
6. Disengage the gun safety latch and
squeeze the gun trigger. Turn the
ON-OFF Toggle Switch to the "ON"
position (Figure 4) and turn
Pressure Control Knob (Figure 3)
clockwise to increase pressure just
enough to start the pump.
7. Turn the Prime/PR Valve to the
"CLOSED" position. This will allow
solvent to be flushed through the
pump, hoses and gun. Allow the
unit to operate until clean solvent
comes from the gun.
8. Release the trigger and engage the
gun trigger lock.
9. If you are going to start spraying,
place the suction tube into the
supply container. Release the gun
safety latch and trigger the gun
into another empty, metal
container, holding a metal part of
the gun firmly against the pail and
force the solvent from the pump
and hose. Engage the gun safety
latch until you are ready to spray.
10. If you are going to store the sprayer,
remove the suction tube from the
solvent pail, holding a metal part of
the gun firmly against the pail and
force the solvent from the pump and
hose. Engage the gun safety latch.
Refer to "Storage" Procedure on
page 4.
11. Whenever you shut off the sprayer,
follow the "PRESSURE RELIEF
PROCEDURE" on page 3.
SETTING UP
1. Connect the hose and gun.
a. Remove the plastic cap plug
from the outlet tee and screw a
conductive or grounded 3000 psi
airless spray hose onto fluid outlet.
b. Connect an airless spray gun to
the other end of the hose.
Wide Gap
Slight Gap
Figure 2 - PR Valve
Figure 3 - Pressure
Control
Figure 4 - Toggle Switch
ON
OFF
Figure 6 - Holding gun against pail
Figure 5 - Engaging trigger lock
AL2710
!
WARNING
!
WARNING
6
Operating Instructions and Parts Manual
Airless Paint Systems
www.chpower.com
Pre-Operation (Cont.)
NOTE: Do not use thread sealer on
swivel unions as they are made to selfseal. Use thread seal on tapered male
threads only.
2. Fill the Packing Nut/Wet Cup 1/3
full with Throat Seal Oil (TSO)
supplied (see Figure 7).
3. Check the electrical service. Make
sure that the electrical service is 120
VAC, 15 amp minimum, and that
the outlet you are using is properly
grounded.
Make sure that all
sprayer
components, work pieces, spray
material containers, and electrical
outlets are properly grounded before
operating unit.
4. Flush the sprayer according to the
Flushing section (New Sprayer) and
How to Flush section.
SPRAY TIP SELECTION
See Tip Selection Chart on Page 7.
Spray tip selection is based on paint
viscosity, paint type, and job needs. For
light viscosity (thin paints), use a
smaller tip. For heavier viscosities
(thicker paints), use a larger tip size.
Spray tip size is based on how many
gallons of paint per minute can be
sprayed through the tip. Do not use a
tip larger than the maximum pump
flow rate or capacity the sprayer can
accommodate. Pump flow rate is
measured in gallons per minute (GPM).
PATTERN WIDTH
Thickness of the paint coat is
determined by spray tip “fan width,”
rate of the spray gun movement, and
distance to surface.
SPRAY TIP SELECTION
Two tips having the same tip size, but
different pattern widths, will deliver
the same amount of paint over a
different area (wider or narrower
strip).
A spray tip with a narrow pattern
width makes it easy to spray in tight
places.
SPRAY TIP REPLACEMENT
During use, especially with latex paint,
high pressure will cause the orifice to
grow larger. This destroys the pattern.
Replace tips before they become
excessively worn. Worn tips waste
paint, cause overspray, make cutting-in
difficult, and decrease sprayer
performance.
Operation
STARTING UP
1. Learn the functions of the controls
(See How to Flush section,
Important Controls).
2. Prepare the material according to
the material manufacturer’s
instructions. Place the suction tube
into the material container.
Make sure gun is
pointed into empty
bucket at all times. Never point gun
toward people o r animals. Avoid
pointing toward dust and debris. Avoid
pointing toward other objects .
3. Start the sprayer as follows:
a. Prime/PR Valve must be “OPEN”
in the priming position.
b. Turn to the ON-OFF Toggle
Switch to the “ON” position.
To stop unit in an
emergency, turn
motor off. Then relieve fluid pressure
in pump and hose as instructed on
page 3.
4. Prime the pump.
a. Allow pump to operate until
paint comes from gun.
b. Release the trigger and engage
the gun safety latch.
c. Turn Prime/PR Valve OPEN to the
prime position ensuring the
pressure is released from the
system.
d. Turn Pressure Control Knob to
minimum pressure.
e. Install spray tip onto gun.
f. Close the Prime/PR Valve to the
pressure position.
g. Turn the pressure control knob
to desired spray pressure.
h. Disengage the gun safety lock
and you are ready to start
spraying.
If spraying into the
paint bucket, use
the lowest spray pressure possible and
maintain firm metal-to-metal contact
between gun and container as shown
in Figure 6.
5. Adjust pressure.
a. Turn Pressure Control Knob
clockwise to increase pressure and
counterclockwise to decrease it.
b. Always use the lowest pressure
necessary to completely atomize
the material.
Operating the
sprayer at higher
pressure than necessary wastes
material, causes early tip wear, and
shortens the life of the sprayer.
c. If more coverage is needed, use
a larger spray tip rather than
increasing the pressure.
d. Check the spray pattern. The tip
size and angle determine the
pattern width and flow rate.
6. If spray tip is clogged, clean only
after removing it from the gun.
To reduce risk of spray
injection, never hold
Figure 7 - Applying throat seal oil
AL2710
!
WARNING
!
WARNING
!
WARNING
!
CAUTION
NOTICE
!
WARNING
7
Airless Paint Systems
Operating Instructions and Parts Manual
www.chpower.com
16-18 406-457
St
l
Operation
(Cont.)
hand, body fingers or hand in front of
spray tip when cleaning or checking for
a cleared tip. Always point the gun
toward the ground or into an empty
container when checking to see if the
tip is cleared or when using a selfcleaning tip. Always remove tip before
cleaning.
NOTE: When pausing during a paint
job, keep tip clean by locking the gun
and submerging the tip in a small
bucket of paint thinner. This will help
reduce buildup and drying of paint in
tip, tip guard, and gun.
7. When shutting off the sprayer,
follow this procedure.
a. Whenever you stop spraying,
even for a short break, follow the
Pressure Relief Procedure on page 3.
b. Clean the tip and gun as
recommended by your separate
gun instruction manual.
c. Flush the sprayer at the end of
each work day if the material you
are spraying is waterbased, or if it
could harden in the sprayer
overnight. See "Flushing" page 4.
Use a compatible solvent to flush,
then fill the pump and hoses with
an oil based sovent such as mineral
spirits.
d. For long term shutdown or
storage, refer to page 4.
Be sure to relieve
pressure in the
pump after filling with mineral spirits.
Table 2 - Tip Selection Chart
AL2710
QuadraflowTM Tip
for painting
(12" from surface)
Fan Width (in.) (mm)
4-6 102-152
6-8 152-203
8-10 203-254
10-12 254-305
12-14 305-356
14-16 356-406
Gun Filter 2 types (part #)
Lacquer, Varnish
Wood Interior
Wood Exterior
Masonry
Stain, Sealer
Enamel
Exterior Stain
Vinyl, Acrylic, Latex
Vinyl, Oil Base Alkyd
Latex, Acrylic
Block Filler
Elastomer
Ceiling Hi Build, Mil White
ructural Stee
Heavy Coatings
!
WARNING
Tip Selection Chart
Orifice Size (inches)
.009 .011 .013 .015 .017 .019 .021 .023 .025 .027 .035
AL3116 AL3117 AL3119 AL3122 AL3125
AL2211 AL2213 AL3126 AL3131
AL3118 AL3120 AL2215 AL2217 AL3130 AL3132 AL3135 AL3137
AL3121 AL3124 AL3127 AL2219 AL2221 AL3136 AL3138
AL3134
l---------AL086101AJ------l l--------------AL086100AJ---------------l
REMOVE FILTER
.029
.031
AL3139
AL3140
Water Flow Rate (gpm)
(water @ 2000psi,
138
bar)
Paint Flow Rate (gpm)
(latex paint @ 2000psi, 138
bar/1.36 spec. gr.)
Pump Minimum
Output*
*pump will support tip worn to next larger size.
.12 .18 .24 .31 .38 .47 .57 .67 .77
(lpm)
.49 .69 .91 1.17 1.47 1.79 2.15 2.54 2.96
.10 .15 .21 .27 .33 .40 .49 .58 .66
(lpm)
(gpm)
(lpm)
.38 .57 .79 1.02 1.25 1.51 1.85 2.20 2.50
.25 .25 .33 .40 .50 .60 .75 .88 1.00
1.00 1.00 1.25 1.50 1.90 2.30 2.80 3.30 3.80
Consult your paint manufacturer for application recommendation
1.31
1.03
3.90
4.98
.88
1.12
4.24
3.33
1.25
1.50
5.70
4.70
8
Operating Instructions and Parts Manual
Airless Paint Systems
www.chpower.com
Operation (Cont.)
SPRAY TECHNIQUE
Good Spray Gun Technique is at the
core of any spray paint operation.
Operator skill and efficiency is as
important as good equipment and
good paint. Good spray technique is a
skill that can be developed by
following these simple instructions.
If you are not familiar with spraying
techniques, study this section of your
manual and practice the proper
technique on pieces of cardboard or a
suitable surface.
Hold the spray gun 12 - 15 inches away
from the work surface and keep it
perpendicular (straight) to the surface.
Move the spray gun parallel to the
work and at a right angle to the
surface. (See Figure 8).
Move the gun at a steady rate in order
to apply a good coverage. The wet
coat should be just under the thickness
at which a run or sag will occur. Slow
gun movement or gun held too close
will result in an overly wet or thick wet
or thick coat coverage that is likely to
run or sag.
Do not wave the spray gun. This
waving is called arching. Instead, hold
the spray gun at a 12 to 15 inch
distance perpendicular from the work.
(See Figure 9.)
The closer the spray gun is held to the
work, the thicker the paint is deposited
and the faster the gun must be moved
to prevent sags and runs. Holding the
gun too far from the work will cause
excessive fog, overspray, and a thin
and grainy coat.
It is important to "trigger" the gun
after gun movement (arm movement)
has started and release trigger (shut
gun off) before gun movement ends.
Gun movement is always longer than
actual paint (spray) stroke. In that
manner, even blending and uniform
paint coat thickness is achieved over
the entire surface. When the gun is in
motion as the trigger is pulled, it
deposits an even amount of paint.
Overlap the previous pass by half the
width of the spray pattern. Aim at the
bottom of the previous pass.
Adjust Pressure Control Knob so that
paint is completely atomized from the
spray gun. Insufficient pressure will
result in “tailing.” Too much pressure
will result in excess fog and overspray,
excessive tip wear, and increased
sprayer wear and tear.
Always use the lowest pressure possible
to obtain desirable results. Test the
spray pattern on a piece of cardboard
or other surface.
To cover “inside” and “outside”
corners (on walls or other objects), aim
the spray gun toward the center of the
corner. The spray pattern is divided in
half, and the edges of the spray
pattern on both walls are the same.
Electrical System
ELECTRICAL BOARD CALIBRATION
NOTE: Anytime a sensor, pressure
control assembly (board) or both are
replaced, the following calibrations
must be performed.
ZERO CALIBRATION
1. Place prime/pressure relief valve in
the prime (open) position.
2. Set the pressure control knob to the
minimum setting (CCW).
3. Remove the screws and lower the
pressure control assembly.
4. Ensure the jumper is on the "P-ZR"
terminal. Note: This jumper comes
with a new pressure control
RIGHT
WRONG
Gun is held at an angle,
fluid disperses unevenly
Gun is held perpendicular
to work piece, fluid
disperses evenly
Figure 8 - How to hold spray gun when spraying
Figure 9 - Proper Spray Technique
INCORRECT
CORRECT
Start
Pull
Trigger
Release
Trigger
End
12-15”
AL2710
9
Airless Paint Systems
Operating Instructions and Parts Manual
www.chpower.com
Electrical System (Cont.)
assembly (board) and is installed on
the "P-ZR" terminals. If you are
"Zero Calibrating" a pressure
control assembly presently in the
unit, remove jumper from single
terminal P-ZR and place on both
terminals P-ZR. When Zero
Calibration is complete, replace
jumper on a single terminal of P-ZR.
5. Turn machine "ON" and ensure it is
not cycling.
6. If the yellow zero light on the
electrical board is ON, use an
insulated screwdriver to turn the
"ZERO" trimpot counterclockwise
until the light goes out. Then turn
it clockwise until the light just
comes back on. If so equipped, look
at the LCD Display and if "0000" is
showing the Zero Calibration is
complete. If the display shows more
than "0000", turn the Zero Trimpot
CCW until "0000" is showing. If
"-- -- --" is showing, turn the zero
trimpot CW until "0000" is
displayed.
7. If the yellow light is OFF, turn the
"Zero" trimpot clockwise, just until
the light comes on and stop.
Confirm "0000" is displayed.
NOTE: If the yellow light remains
constantly "ON" or "OFF" during this
calibration, the sensor is defective and
should be replaced.
8. IMPORTANT: When calibration is
complete, move jumper from both
"PZ-R" terminals to single terminal
on P-ZR.
PRESSURE CALIBRATION
1. Complete the ZERO calibration, as
per "ZERO CALIBRATION" prior to
commencing this calibration.
2. Attach a 50', 1/4" airless hose,
airless gun with 0.017 tip and a
5000 psi glycerin filled pressure
gauge to the pump.
3. Place the suction tube into a bucket
of Coro-chek and water.
4. Turn Prime/Pressure Relief Valve to
the prime (open) position.
5. Turn Pressure Control Knob
clockwise until machine starts to
prime.
6. Place the Prime/Pressure Relief
Valve in the pressure (closed)
position.
7. While watching pressure gauge,
slowly adjust the pressure trimpot
(clockwise to increase and
counterclockwise to decrease) until
the maximum static pressure is 3000
psi, with the pressure control knob
fully clockwise. Trigger the gun into
pail several times to ensure pressure
returns to 3000 psi.
LIQUID CRYSTAL DISPLAY (LCD)
CALIBRATION
NOTE: Your unit may or may not be
equipped with an LCD.
1. Complete the "ZERO
CALIBRATION" and "PRESSURE
CALIBRATION" procedures prior to
starting this calibration.
2. Turn Pressure Control Knob up until
system pressure is above 2500 psi
(as indicated on glycerin filled
pressure gauge) and the machine is
not cycling.
3. Use an insulated screwdriver to
adjust the Set trimpot. Turn trimpot
counterclockwise until it clicks, and
then adjust to match pressure
against pressure gauge reading.
4. Move the pressure control knob to
different settings and trigger the
gun several times into pail. This will
ensure that the LCD continues to
match the pressure gauge reading.
PHASE LIMIT TRIMPOT CALIBRATION
(formerly known as the Low Voltage or
Master Voltage Calibration)
1. Attach a 50', 1/4" airless hose,
airless gun with .017 tip and a 5000
psi glycerin filled pressure gauge to
the pump.
2. Place the suction tube into a bucket
of Pump Conditioner and water.
3. Turn pump ON and turn up
Pressure Control until the machine
starts to prime.
4. Place the Prime/Pressure Relief
Valve in the pressure (closed)
position.
5. Pressurize pump to 600 psi.
6. Trigger the gun several times
noting the deadband (the amount
of pressure drop before the pump
rebuilds to set pressure).
7. If deadband is greater than 100 psi,
adjust the low pressure voltage
trimpot so that the deadband is less
than 100 psi and the pressure
increase after the gun trigger is
released is less than 200 psi.
These pressures are guidelines and
may vary slightly from pump to
pump.
8. Reattach Pressure Control Assembly
being careful not to pinch wires.
NOTE: The 331-315-99 Pressure Control
Assembly has a reddish brown terminal
labelled “Inhibit Switch.” At all times
there should be a jumper on the two
left terminals, which are the closest to
the “S2” connection. Also on the
Revision E is a terminal labelled “ONSL.” This terminal should never have a
jumper on it.
ELECTRICAL TROUBLESHOOTING
A variety of causes can lead to
problems with your sprayer’s electrical
system. Sometimes, it will not start. See
page 15 for a list of possible problems
and solutions to fix them.
AL2710
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