Visit: www.chpower.com
Call:Customer Service at 1-800-543-6400
Address any correspondence to: Campbell Hausfeld Attn: Customer Service
100 Production Drive
Harrison, OH 45030 U.S.A.
Operating Instructions and Parts Manual
The Ultimate Portable
Garage Air Compressor
Description
Oilless compressors are designed for do-it-yourselfers with a variety of home and
automotive jobs. These compressors power spray guns, impact wrenches and other
tools. These units operate without oil.
Specifications
WL6700 Series
Running HP: 1.7 (ISO 1217)
Free Air CFM: 3.8 @ 90 psi (ISO 1217)
Free Air CFM: 5.6 @ 40 psi (ISO 1217)
Tank Capacity (gallons):
18, 22, 26, or 30
Volts, Phase: 120 V, single
Amp Draw: 15
Max. Duty Cycle: 50%
Figure 1 - WL6700 Series
Record the model number and serial
number, located on the back of the tank,
and date of purchase in the space below.
Model #: ____________________________
Serial #: _____________________________
Date of Purchase: ____________________
Retain these numbers for future reference.
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3
Operating Instructions and Parts Manual
Important Safety Information
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.
IMPORTANT: Information that
requires special attention.
Safety Symbols
The following Safety Symbols appear
throughout this manual to alert you
to important safety hazards and
precautions.
INSTRUCTIONS PERTAINING TO A RISK OF FIRE, ELECTRIC SHOCK, OR INJURY
TO PERSONS
This manual contains important safety, operational and maintenance information. If
you have any questions, please call 1-800-543-6400 for customer assistance.
Since the air compressor and other components (material pump, spray guns, filters,
lubricators, hoses, etc.) used, make up a high pressure pumping system, the following
safety precautions must be observed at all times:
CALIFORNIA PROPOSITION 65
This product or its power cord may contain chemicals, including lead,
known to the State of California to cause cancer and birth defects or
other reproductive harm. Wash hands after handling.
You can create dust when you cut, sand, drill or grind
materials such as wood, paint, metal, concrete, cement, or
other masonry. This dust often contains chemicals known to cause cancer, birth
defects, or other reproductive harm. Wear protective gear.
Breathable Air Warning
This compressor/pump is not equipped and should not be used “as is” to supply
breathing quality air. For any application of air for human consumption, the air
compressor/pump will need to be fitted with suitable in-line safety and alarm
equipment. This additional equipment is necessary to properly filter and purify
the air to meet minimal specifications for Grade D breathing as described in
Compressed Gas Association Commodity Specification G 7.1 - 1966, OSHA 29 CFR
1910. 134, and/or Canadian Standards Associations (CSA).
DISCLAIMER OF WARRANTIES
In the event the compressor is used for the purpose of breathing air application
and proper in-line safety and alarm equipment is not simultaneously used,
existing warranties shall be voided, and Campbell Hausfeld disclaims any liability
whatsoever for any loss, personal injury or damage.
Wear Eye and
Mask Protection
Wear Eye and
Ear Protection
Risk of
Electrocution
4
Read Manual
First
Hot Parts
Risk of
Explosion
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Risk of Fire
Risk of Falling
Risk of Fumes
GENERAL
a. To reduce the risks of electric shock, fire, and injury to persons, read
all the instructions before using the tool. Failure to follow warnings,
dangers, and cautions could result in DEATH or SERIOUS INJURY.
b. Be thoroughly familiar with the controls and the proper use of the
equipment. Follow all instructions. Contact your Campbell Hausfeld representative
if you have any questions.
c. Follow all local electrical and safety codes as well as in the US, National Electrical
Codes (NEC) and Occupational Safety and Health Act (OSHA).
d. Only persons well acquainted with these rules of safe operation should be
allowed to use the unit.
Important Safety Information (Continued)
WL6700 Series
WORK AREA
a. Keep the work area clean and well lighted. Cluttered
benches and dark areas increase the risks of electric shock,
fire, and injury to persons.
b. Keep bystanders, children, and visitors away while
operating. Distractions are able to result in the loss of
control. NEVER allow children in the work area.
Motors, electrical equipment
and controls can cause electrical
arcs that will ignite a flammable gas or vapor. Never
operate or repair in or near a flammable gas or vapor.
Never store or spray flammable liquids or gases in the
vicinity of the compressor.
c. To reduce fire hazard, keep engine/motor exterior free of
oil, solvent, or excessive grease.
PERSONAL SAFETY
a. Stay alert. Watch what you are doing and use common
sense when operating the tool. Do not use the tool
while tired or under the influence of drugs, alcohol, or
medication. A moment of inattention while operating the
tool increases the risk of injury to persons.
Ensuring that the tool is used
only when the operator and all
other personnel in the work area are wearing ANSI Z87
eye protection equipment, and when required, other
appropriate protection equipment such as head, hearing
and foot protection equipment. Serious eye or permanent hearing loss
could result.
b. Always wear hearing protection when using the tool.
Prolonged exposure to high intensity noise is able to cause
hearing loss.
c. Always work in a well-ventilated area. Wear OSHA-
approved dust mask.
d. Dress properly. Do not wear loose clothing or jewelry.
Contain long hair. Keep hair, clothing, and gloves away
from moving parts. Loose clothes, jewelry, or long hair
increases the risk of injury to persons as a result of being
caught in moving parts.
Compressor parts may be hot even if
the unit is stopped.
e. Keep fingers away from a running compressor;
fast moving and hot parts will cause injury and/or
burns.
f. Do not overreach. Keep proper footing and
balance at all times. Proper footing and balance
enables better control of the tool in unexpected
situations.
ELECTRICAL SAFETY
Risk of electrical shock. Always
disconnect from power source before
servicing. Servicing should be performed by authorized
service center.
USE AND CARE
Never use plastic (PVC) pipe for
compressed air. Serious injury or
death could result.
a. Before each use, inspect compressed air
system and electrical components for signs of damage,
deterioration, weakness or leakage. Repair or replace
defective items before using.
b. Check all fasteners at frequent intervals for proper
tightness.
c. Check air hoses for weak or worn condition before each
use. Make sure all connections are secure.
d. Do not stand on or use the pump or unit as a handhold.
e. If the equipment should start to abnormally vibrate, STOP
the engine/motor and check immediately for the cause.
Vibration is generally a warning of trouble.
Never remove or attempt to adjust safety valve.
Keep safety valve free from paint and other accumulations.
f. Do not alter or tamper with the safety relief valve. In the
event that the safety relief valve is tampered with, existing
warranties shall be voided and Campbell Hausfeld disclaims
any liability whatsoever for any loss, personal injury or
damage.
Never attempt to repair or modify
a tank! Welding, drilling or any
other modification will weaken the tank resulting in
damage from rupture or explosion. Always replace worn or
damaged tanks.
Drain liquid from tank daily.
g. Make sure to drain tank regularly and inspect periodically
for unsafe conditions such as rust formation and
corrosion. Tanks rust from moisture build-up, which
weakens the tank.
h. Release air slowly when draining moisture or
depressurizing the compressor system. Fast moving air will
stir up dust and debris which may be harmful.
i. Do not remove any warning labels from the unit.
j. Store inside. Do not store outside or in direct sunlight.
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5
Operating Instructions and Parts Manual
Important Safety Information (Continued)
SPRAYING PRECAUTIONS
Do not spray flammable materials in vicinity of open flame
or near ignition sources including the compressor unit.
a. Do not smoke when spraying paint, insecticides, or other flammable
substances.
b. Use a face mask/respirator when spraying and spray in a well
ventilated area to prevent health and fire hazards.
c. Do not direct paint or other sprayed material at the compressor.
Locate compressor as far away from the spraying area as possible to
minimize overspray accumulation on the compressor.
d. WHEN SPRAYING OR CLEANING WITH SOLVENTS OR TOXIC CHEMICALS,
FOLLOW THE INSTRUCTIONS PROVIDED BY THE CHEMICAL
MANUFACTURER.
AIR SOURCE
Air compressors providing air to the tank should follow the requirements
established by the American National Standards Institute Standard
B19.3-1991; Safety Standard for Compressors for Process Industries. Contact your air
compressor manufacturer for information.
SERVICE
a. Release air pressure from air tank by pulling safety relief ring before servicing or
replacing parts.
b. Service must be performed only by qualified repair personnel.
Never attempt to repair or modify a tank! Welding, drilling or any other
modification will weaken the tank resulting in damage from rupture or
explosion. Always replace worn or damaged tanks.
c. When servicing a tool, use only identical replacement parts. Use only authorized
parts.
NOTE: The DANGER, WARNING, CAUTION, and NOTICE notifications and instructions
in this manual cannot cover all possible conditions and situations that may occur. It must be
understood by the operator that common sense and caution are factors which cannot be built
into this product, but must be supplied by the operator.
SAVE THESE INSTRUCTIONS
DO NOT DISCARD
6
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Unpacking
Nylon
recoil hose
Blow gun
Blow gun
accessories
Self-tapping
screws
Handle
Tire
inflation
valve
Thread
tape
WL6700 Series
After unpacking the unit, inspect carefully
for any damage that may have occurred
during transit. Check for loose, missing
or damaged parts. Make sure to tighten
fittings, bolts, etc., before putting unit
into service. Check to be sure all supplied
accessories are enclosed with the unit. In
case of questions, damaged or missing
parts, please call 1-800-543-6400 for
customer assistance.
u Do not operate unit if damaged during
shipping, handling or use. Damage may
result in bursting and cause injury or
property damage.
u For your own safety, never operate unit
until all assembly steps are complete and
until you have read and understood the
entire operator’s manual.
u To reduce the risk of injury, if any parts are
missing, do not attempt to assemble the
air compressor until the missing parts are
obtained and installed correctly.
CONTENTS IN THE CARTON
u Blow gun accessories
u Handle
u Blow gun
u Nylon recoil hose
u (4) Self-tapping screws
u Tire inflation valve
u Thread tape
u Operating Instructions and Parts
Manual
u Product Registration Card
Figure 2 - Unpacking
ADDITIONAL ITEMS NOT INCLUDED
u Air Hose
u ANSI Z87 Eye Protection
u Hearing Protection
u Other Personal Protective Gear as
required
Read & Follow All Instructions
Save These Instructions
Do Not Discard
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7
Operating Instructions and Parts Manual
Glossary
Become familiar with these terms before operating the unit.
AIR DELIVERY - A combination of psi and SCFM. The air delivery required by
a tool is stated as (number) SCFM at (number) psi. The combination of these
figures determines what size unit is needed.
AIR TANK CAPACITY - The volume of air stored in the tank and available for
immediate use. A large tank allows the intermittent use of an air tool with an air
requirement higher than the compressor’s rated delivery.
ASME SAFETY VALVE * - This valve automatically releases air if the tank pressure
exceeds the preset maximum.
CLICK-TO-SET REGULATOR - The regulator controls the amount of air pressure
released at the hose outlet to the proper amount needed to operate an air tool or
spray gun.
CUT-IN/CUT-OFF PRESSURE - Specific psi at which a compressor starts and
stops while refilling the air tank.
Figure 3 - ASME Safety Valve
EASY DRAIN KNOB - This knob is used to drain moisture from the tank daily to
reduce the risk of corrosion.
FOOT PEDAL ON/OFF SWITCH - Used to turn the compressor on and off. Press
firmly.
MOTOR PROTECTION - If the unit is over worked, a thermal switch will shut
unit off. If this happens, turn unit OFF the ON/OFF Switch, wait 30 minutes to
cool, turn ON the ON/OFF Switch again to resume work.
OUTLET (TOOL) PRESSURE GAUGE - Displays the current outlet pressure to the
tool in psi. It is regulated by the regulator knob.
PRESSURE SWITCH -Shuts the compressor off automatically when tank
pressure reaches the maximum preset pressure. The compressor will
automatically restart when it reaches the minimum preset pressure.
PSI (POUNDS PER SQUARE INCH) - Measurement of the pressure exerted by
the force of the air. The actual psi output is measured by a pressure gauge on the
compressor.
SCFM (STANDARD CUBIC FEET PER MINUTE) - Sometimes called CFM (Cubic
Feet per Minute). Measurement of air volume delivered by the compressor.
TANK PRESSURE GAUGE - Indicates tank pressure in psi.
Figure 4 - Click-To-Set Regulator
Figure 5 - Easy Drain Knob
Figure 6 - Foot Pedal ON/OFF Switch
TOOL STORAGE - The open space on top of compressor is designed for tool
storage. Specific Campbell Hausfeld tool kits will fit in this storage area.
* ASME: American Society of Mechanical Engineers. ASME tanks are
manufactured to ASME requirements.
8
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Figure 7 - Tank Pressure Gauge
Unpacking
Getting To Know Your Compressor
Power
cord clip
Power
cord
Outlet (tool)
pressure gauge
Click-to-set
regulator
Coupler
Foot pedal ON/OFF switch
Wheel lock /
foot brake
Storage trays
WL6700 Series
RECOMMENDED USES FOR THIS
COMPRESSOR
u Auto maintenance
u Auto restoration
u Fastening
u Home maintenance
u Inflation
u Woodworking
TOOL RECOMMENDATION FOR THIS
COMPRESSOR
Continuous Use —
Inflation accessories
Airbrush
Air screwdrivers
Brad nailers and Staplers
Caulk guns
Engine cleaners
Finish nailers
Grease guns
Home spray guns
Impact wrench
Ratchets
Reciprocating saws
Roofing and Framing nailers
Pull handle
ASME
Safety
valve
Figure 8 - Components of the compressor
Blow gun
clip
Tank pressure
gauge
Easy-drain knob
Easy-drain cup
Safety
blow gun
Instant-air
hose
Intermittent Use
(Short powerful bursts) —
Air chisels
Air drills
Automotive spray guns
Die grinders
making sure handle is on the outside
of the bracket and the holes of the
handle line up with the holes of the
tank bracket.
2. Insert screws through handle and then
the bracket. Using a ratchet with 3/8
inch socket, tighten screws to hold the
handle in place.
Figure 9 - Handle assembly
INFLATION HOSE ASSEMBLY
1. Apply thread tape to both ends of the
recoil hose to prevent leaks.
2. Thread the coil hose into the fitting on
the shroud. Use 2 adjustable wrenches
to tighten the connection by holding
the bottom wrench steady and
tightening with the top wrench (See Figure 10).
3. Screw blow gun onto the end of the
coil hose. Use 2 adjustable wrenches
to tighten the connection by holding
the bottom wrench steady and
tightening with the top wrench.
Once the recoil hose and blow gun are
attached, make sure no pressure is in
tank before replacing. Recoil hose and
blow gun must be installed for unit to
operate properly.
Apply thread tape to both
ends of the recoil hose to
prevent leaks
10
Figure 10 - Inflation hose assembly
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Installation
LOCATION
When assembled, the tank must sit level to allow the tank to drain properly.
It is extremely important to install the compressor in a clean, well ventilated area where
the surrounding air temperature will not be more than 100°F.
A minimum clearance of 18 inches between the compressor and a wall is required
because objects could obstruct air flow.
Do not locate the compressor air inlet near steam, paint spray, sandblast
areas or any other source of contamination. This debris will damage the
motor.
WHEEL LOCK/FOOT BRAKE
To move the compressor, use your foot to lift the foot brake lever to disengage the
brake.
Once the compressor is at the desire location, use your foot to push down on the foot
brake lever to engage the brake.
WL6700 Series
Disengaged
Engaged
Figure 11 - Wheel Lock/Foot Brake
ELECTRICAL INSTALLATION
All wiring and electrical connections should be performed by a qualified
electrician. Installation must be in accordance with local codes and
national electrical codes.
Never use an extension cord with this product. Use additional
air hose instead of an extension cord to avoid power loss and
permanent motor damage.
STOP!
GROUNDING INSTRUCTIONS
1. This product is for use on a nominal 120 volt circuit and has a grounding plug that
looks like the plug illustrated in Figure 12. Only connect the product to an outlet
having the same configuration as the plug. Do not use an adapter with this product.
In the event of an electrical short circuit, grounding reduces risk of electrical shock
by providing an escape wire for electric current. This product is equipped with a
cord having a grounding wire with an appropriate grounding plug. Plug must be
plugged into an outlet that is properly installed and grounded in accordance with
all local codes and ordinances.
Improper use of grounding plug can result in a possible risk
of electrical shock!
Do not use a grounding adapter with this product!
2. If repair or replacement of cord or plug is necessary, do not connect grounding wire
to either flat blade terminal. The wire with insulation having an external surface
that is green (with or without yellow stripes) is the grounding wire.
Figure 12 - Grounding method
TEST
RESET
Never connect green (or green and yellow) wire to a live terminal.
3. Check with a qualified electrician or serviceman if grounding instructions are not
completely understood, or if in doubt as to whether product is properly grounded.
Do not modify plug provided; if it will not fit outlet, have proper outlet installed by a
qualified electrician.
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11
Operating Instructions and Parts Manual
Installation (Continued)
WIRING
1. Local electrical wiring codes differ from area to area. Source
wiring, plug and protector must be rated for at least the
amperage and voltage indicated on motor nameplate, and
meet all electrical codes for this minimum.
2. Use a slow blow fuse or a circuit breaker.
Overheating, short circuiting and fire damage
will result from inadequate wiring, etc.
NOTE: 120 volt, 15 amp units can be operated on a 120 volt
circuit under the following conditions:
a. No other electrical appliances or lights are connected to
the same branch circuit.
b. Voltage supply is normal.
c. Circuit is equipped with a 15 amp circuit breaker or a 15
amp slow blow fuse.
3. If these conditions cannot be met or if nuisance tripping
of current protection device occurs, it may be necessary to
operate compressor from a 120 volt, 20 amp circuit.
Operation
Outlet (Tool)
Pressure Gauge
Click-to-set
regulator
ASME
Safety Valve
Storage Trays
Tank
Pressure
Gauge
MOISTURE IN COMPRESSED AIR
Moisture in compressed air will form into droplets as it
comes from an air compressor pump. When humidity is
high or when a compressor is in continuous use for an
extended period of time, this moisture will collect in the
tank. When using a paint spray or sandblast gun, this water
will be carried from the tank through the hose, and out of
the gun as droplets mixed with the spray material.
IMPORTANT: This condensation will cause water spots
in a paint job, especially when spraying other than water
based paints. If sandblasting, it will cause the sand to cake
and clog the gun, rendering it ineffective. A filter in the air
line (MP3105), located as near to the gun as possible, will
help eliminate this moisture.
This compressor can be used for general inflation as well as
intermittent duty air tool usage. For inflation purposes, this
compressor utilizes a new technology called Rapid Inflation
Technology (RIT).
IMPORTANT: Make sure the Wheel Lock/Foot Brake is engaged
before operating the unit (See Figure 11).
LUBRICATION
This is an oilless product and DOES NOT require lubrication to
operate.
Figure 13
12
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Operation (Continued)
WL6700 Series
ASME SAFETY VALVE
Do not remove or attempt to adjust the safety
valve!
This valve should be checked under pressure occasionally by
pulling the ring by hand (See Figure 13). If air leaks after ring has
been released, or valve is stuck and cannot be actuated by ring, it
MUST be replaced.
CLICK-TO-SET REGULATOR KNOB
u This knob controls air pressure to an air operated tool, or
paint spray gun.
u Turning knob clockwise increases air pressure at outlet.
u Turning counterclockwise will lower air pressure at outlet.
u Fully counterclockwise will shut off flow of air completely.
This regulator knob is designed to rotate approximately 270
degrees for all feature settings. If the knob is rotated past
minimum operation setting (counterclockwise), the knob will
no longer “click” as designed to indicate that the regulator has
been placed in a specific setting. The outlet pressure will read
zero (0 psi) once the knob is at the minimum operation setting.
Continuous turning of the regulator knob past minimum
operation setting (counterclockwise) could result in the
regulator knob coming loose and detaching.
If outlet pressure gauge is at zero (0) psi,
DO NOT turn knob counterclockwise.
If regulator knob is turned and a “click”
is no longer heard, DO NOT turn knob counter
clockwise.
Reassembly
If you do turn the regulator knob too far past minimum
operation setting ( counterclockwise) and the knob does come
off, use these steps to reassemble the regulator:
1. Align the spring into central position.
2. Locate retaining latch on inside of regulator knob.
3. Align retaining latch to the aluminum threads of the
regulator body.
4. Attach at an angle, catching the retaining latch under the
beginning of the aluminum threads.
5. Apply pressure to align knob to regulator body.
6. Turn clockwise until the knob clicks.
For further assistance or questions, please call 1-800-543-6400.
OUTLET (TOOL) PRESSURE GAUGE
1. This gauge shows at-a-glance, air pressure at outlet. Air
pressure is measured in pounds per square inch (psi).
2. Be sure this gauge reads ZERO before changing air tools or
disconnecting hose from outlet.
TANK PRESSURE GAUGE
Gauge shows pressure in tank indicating compressor is building
pressure properly.
STORAGE TOP
The storage tray compartments, located on the top of the
compressor, are designed for easy tool storage. Unique tool kits,
available at your local retailer or on www.chpower.com, store
easily on top of the unit.
Figure 14
Regulator Body
Regulator Spring
Retaining Latch
Regulator Knob
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13
Operating Instructions and Parts Manual
Operation (Continued)
RAPID INFLATION TECHNOLOGY™ (RIT)
When the compressor is used in the RIT mode, the air being produced from the
compressor pump will go directly to the recoil hose which is attached to the bottom of
the compressor (See Figure 15). This will eliminate waiting for the compressor tank to
fill up, allowing for significantly faster inflation.
Instant air hose will get hot while the compressor is
on and during the inflation process.
Drain water from tank prior to inflation.
TO USE COMPRESSOR FOR INFLATION:
1. Connect recoil hose to open port located on the bottom of compressor (See Figures
10 and 15). The coil hose and blow gun must remain attached so that the unit
operates properly.
2. Attach blow gun to the other end of the recoil hose. The blow gun should ALWAYS
be connected to the recoil hose.
3. To inflate balls, rafts, etc. attach inflation needle or nozzle to the end of blow gun.
4. To inflate tires, attach tire inflation valve to the end of blow gun.
5. Attach the appropriate inflation device to object needing inflation.
6. Turn on compressor by firmly pressing down the red power foot switch and inflate
by squeezing the trigger.
Use caution to avoid over inflation.
7. When inflation is complete, blow gun can be attached to the clip that is molded on
the side of the top shroud for convenient storage.
Figure 15 - Rapid Inflation Technology
TO USE COMPRESSOR FOR AIR TOOL USAGE:
1. Connect 1/4 inch industrial plug to separate hose (plug and hose not included).
2. Connect separate hose to the coupler located below pressure regulator by pulling
the sleeve on coupler all of the way back, then push hose into coupler and release
sleeve (See Figure 17).
3. Close regulator (turn knob fully counterclockwise to the left). Do not over tighten.
If outlet pressure gauge is at zero (0) psi, DO NOT turn knob
counterclockwise.
If regulator knob is turned and a “click” is no longer heard, DO NOT turn
knob counterclockwise.
4. Turn compressor on by firmly pressing down the red power foot switch and allow it
to fill tank until it reaches automatic shut off pressure.
5. Attach air tool, paint gun, nailer, etc. to end of air hose.
6. Adjust regulator for desired application. Regulator has preset “click-to-set” feature
which should closely match application pictures on outlet pressure gauge.
7. Use compressor for desired application.
END OF OPERATION/STORAGE
1. Turn compressor OFF at foot pedal ON/OFF switch.
2. Unplug power cord from wall outlet and attach to clip that is molded on the side of
the top shroud.
3. Drain tank of condensation as outlined in the Drain Tank section below.
Figure 16
Figure 17 - Attach hose to coupler
14
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Operation (Continued)
4. Wearing safety glasses, drain tank of any remaining air pressure by pulling the
ring on the safety valve. Use other hand to deflect any fast moving air that may be
directed towards your face.
5. Store compressor in a cool, dry place.
Maintenance
Disconnect power source then release all pressure from the
system before attempting to install, service, relocate or
perform any maintenance. Service should be performed by an authorized service
representative.
The compressor should be checked often for any visible problems and the
following maintenance procedures should be performed each time the compressor is
used.
ASME SAFETY VALVE
Do not remove or attempt to adjust the safety valve!
Check the safety valve by performing the following steps:
1. Plug the compressor in and run until shut off pressure is reached (see Operating
Procedure).
2. Wearing safety glasses, pull the ring on the safety valve to release pressure from
compressor tank. Use your other hand to deflect fast-moving air from being
directed toward your face.
3. The safety valve should automatically close at approximately 40-50 psi. If the safety
valve does not allow air to be released when you pull on the ring, or if it does not
close automatically, it MUST be replaced.
WL6700 Series
Figure 18 - Safety valve
Tank Pressure
Gauge
Easy-Drain
Knob
DRAIN TANK
1. Turn compressor off at foot pedal switch.
2. Check air pressure in tank. To properly drain tank of condensation, tank pressure
should be between 20-60 psi. Drain system will not work if there is no pressure in
the tank. If tank pressure is above 60 psi, decrease pressure in tank by pulling the
ring on the safety valve. Burst of air will be audible.
3. Slowly turn easy drain knob, located below the tank gauge, to the left
(counterclockwise) until fluid begins to fill drain cup. Watch draining to make sure
drain cup does not overflow. If there is a lot of fluid in the tank, you may need to
close drain knob by turning fully to the right (clockwise) then remove the drain cup
to dispose of fluid.
4. When fluid stops draining, close drain knob by turning all the way to the right
(clockwise).
5. Lift cup up and pull out to dispose of drained fluid. Reinsert cup, making sure to
secure in place.
CLEANING
Turn power OFF and clean dust and dirt from motor, tank, and air lines.
Fill Line
Easy-Drain Cup
Figure 19 - Draining tank
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15
Operating Instructions and Parts Manual
Maintenance (Continued)
IMPORTANT: Unit should be located as far from spraying area
as hose will allow to prevent over-spray from entering the pump.
AIR FILTER
Check air filter to be sure it is clean. To service the air filter, tip
the unit back, resting the wheels and handle on the floor (See Figure 20). Remove the filter housing cover. Remove filter and
blow off dirt. Replace air filter if it can not be cleaned. Place filter
back in the housing base. Replace cover.
LUBRICATION
This is an oilless type compressor requiring no lubrication.
THERMAL OVERLOAD PROTECTOR
This compressor is equipped with an automatic
reset thermal overload protector which will shut
off motor if it becomes overheated.
If thermal overload protector shuts motor OFF frequently look
for the following causes:
1. Low voltage
2. Lack of proper ventilation
If the thermal overload protector is actuated,
the motor must be allowed to cool down before
startup is possible. The motor will automatically restart without
warning if left plugged into electrical outlet and unit is turned on.
For information regarding the operation or repair of this
product, please call 1-800-543-6400.
16
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WL6700 Series
Service Record
DATE MAINTENANCE PERFORMED REPLACEMENT COMPONENTS REQUIRED
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17
Operating Instructions and Parts Manual
Troubleshooting Guide
SYMPTOMCAUSESOLUTION
Compressor will not run1. No electrical power1. Plugged in? Switch on? Check fuse/breaker
2. Breaker open2. Reset, determine cause of problem
3. Pressure switch bad3. Replace
4. Motor over worked4. Turn off, let cool, turn on.
5. Tank pressure above cut-in5. Bleed tank pressure down to cut-in.
Fuses blow/circuit breaker
trips repeatedly
Tank pressure drops when
compressor shuts off
Air output lower than
normal/low discharge
pressure
Excessive moisture in
discharge air
Compressor runs
continuously
Motor runs but no air outputBelt wornReplace belt
1. Incorrect size fuse, circuit overloaded1. Check for proper fuse, use time-delay fuse.
Disconnect other electrical appliances from circuit
or operate compressor on its own branch circuit
2. Worn check valve2. Replace
Do not disassemble check valve with
air in tank; bleed tank
1. Loose connections (fittings, tubing,
etc.)
2. Open tank drain2. Close drain
1. Air leaks in piping (on machine or in
outside system)
2. Piston ring worn2. Replace
3. Excessive air usage3. Decrease air usage; compressor not large enough
4. Open tank drain4. Close tank drain
1. Excessive water in tank1. Drain tank
2. High humidity2. Move to area of less humidity; use air line filter
1. Defective pressure switch1. Replace switch
2. Excessive air usage2. Decrease air usage; compressor not large enough
1. Check all connections with soap and water
solution. Tighten; or remove and apply pipe dope
or pipe tape to the threads, then reassemble.
1. Check all connections with soap and water
solution. Tighten; or remove and apply pipe dope
or pipe tape to the threads, then reassemble.
for air requirement
for air requirement
18
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For Replacement Parts or Technical Assistance, Call 1-800-543-6400
Please provide following information: Address any correspondence to:
- Model number Campbell Hausfeld
- Serial number (if any) Attn: Customer Service
- Part description and number as shown in parts list 100 Production Drive