AIR COMPRESSOR
MODELS G0466/G0469
INSTRUCTION MANUAL
WARNING: NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE
OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL, INC.
COPYRIGHT © JULY, 2005 BY GRIZZLY INDUSTRIAL, INC.
#EW7391 PRINTED IN CHINA
Table of Contents
INTRODUCTION .....................................................................................2
Foreword ...........................................................................................2
Contact Info .......................................................................................
MACHINE DATA
SECTION 1: SAFETY ............................................................................. 4
Safety Instructions for
Additional Safety Instructions for Air Compressor
SECTION 2: CIRCUIT REQUIREMENTS ..............................................7
110V Operation .................................................................................
SECTION 3: SET UP ..............................................................................9
Unpacking .........................................................................................9
Assembly ..........................................................................................9
Placement .......................................................................................10
SECTION 4: OPERATIONS .................................................................11
Operation Safety .............................................................................
Starting ............................................................................................11
Line Pressure Regulation ...............................................................12
Connecting Tools ............................................................................
Storage ...........................................................................................14
SECTION 5: MAINTENANCE ...............................................................15
Schedule .........................................................................................15
Draining Tank ..................................................................................
Pressure Safety Valve ....................................................................
Maintenance Notes .........................................................................
SECTION 6: SERVICE .........................................................................18
Troubleshooting ..............................................................................18
Changing Oil ...................................................................................
Check Valve .................................................................................... 20
Fixing Air Leaks ..............................................................................
Pressure Switch ..............................................................................22
Service Notes ..................................................................................23
G0466 Parts Breakdown .................................................................
G0466 Parts
G0469 Parts Breakdown .................................................................
G0469 Parts
WARRANTY AND RETURNS ..............................................................28
SHEET ..................................................................3
Pneumatic Tools ........................................... 4
s .......................... 6
11
13
16
16
17
20
21
24
List .............................................................................25
26
List .............................................................................27
2
7
INTRODUCTION
Foreword Contact Info
We are proud to offer the Model G0466/
G0469 Grizzly Air Compressors. These
models are part of a growing Grizzly fam
ily of fine power tools. When used according to the guidelines set forth in this manual, you can expect years of trouble-free,
enjoyable operation and proof of Grizzly’s
commitment to customer satisfaction.
It is our pleasure to provide this manual
with your air compressor. It was written
to encourage safety considerations and
guide you through general operating procedures and maintenance.
The specifications, details, and photographs in this manual represent these
air compressors as supplied when the
manual was prepared. However, owing
to Grizzly’s policy of continuous improvement, changes may be made at any time
with no obligation on the part of Grizzly.
If you have any comments regarding this
manual, please write to us at the following
address:
-
Grizzly Industrial, Inc.
C/O Technical Documentation
P.O. Box 2069
Bellingham, WA 98227-2069
Most importantly, we stand behind our
tools. If you have any service questions or
parts requests, please call or write us at
the location listed below.
Grizzly Industrial, Inc.
1203 Lycoming Mall Circle
Muncy, PA 17756
Phone: (570) 546-9663
Fax: (800) 438-5901
E-Mail: techsupport@grizzly.com
Web Site: http://www.grizzly.com
-2-
Read the manual before operation.
Become familiar with this air compressor, its safety instructions, and
its operation before beginning any
work. Serious personal injury may
result if safety or operational information is not understood or followed.
Model G0466/G0469 Air Compressors
MACHINE
DATA SHEET
Customer Service #: (570) 546-9663 • To Order Call: (800) 523-4777 • Fax #: (800) 438-5901
AIR COMPRESSOR
MODEL
MODEL G0466 G0469
G0466/G0469
HORSEPOWER
AMPERAGE
TANK VOLUME
MAXIMUM PSI
CFM @40 PSI
CFM @90 PSI
SHIPPING
WEIGHT
MACHINE
WEIGHT
11⁄2 2
8A 14A
4 Gal 4 Gal
125 125
3.1 4.5
2.2 3.6
44 lbs. 64 lbs.
42 lbs. 60 lbs.
Model G0466/G0469 Air Compressors
-3-
SECTION 1: SAFETY
For Your Own Safety Read Instruction Manual
Before Operating This Equipment
The purpose of safety symbols is to attract your attention to possible hazardous conditions. This manual uses a series of symbols and signal words which
are intended to convey the level of importance of the safety messages. The
progression of symbols is described below. Remember that safety messages by
themselves do not eliminate danger and are not a substitute for proper accident
prevention measures.
Indicates an imminently hazardous situation which, if
not avoided, WILL result in death or serious injury.
Indicates a potentially hazardous situation which, if
not avoided, COULD result in death or serious injury.
Indicates a potentially hazardous situation which, if
not avoided, MAY result in minor or moderate injury.
It may also be used to alert against unsafe practices.
NOTICE
This symbol is used to alert the user to useful information about proper operation of the equipment.
Safety Instructions for Pneumatic Tools
1. READ THROUGH THE ENTIRE
MANUAL BEFORE STARTING
MACHINERY. Machinery presents
serious injury hazards to untrained
users.
2. ALWAYS USE ANSI APPROVED
SAFETY GLASSES WHEN
OPERATING MACHINERY. Everyday
eyeglasses only have impact resistant
lenses, they are NOT safety glasses.
3. ALWAYS WEAR AN ANSI
APPROVED RESPIRATOR WHEN
OPERATING MACHINERY THAT
PRODUCES DUST. Wood dust is a
carcinogen and can cause cancer and
severe respiratory illnesses.
-4-
4. ALWAY S USE HE ARING
PROTECTION WHEN OPERATING
MACHINERY. Machinery noise can
cause permanent hearing damage.
5. WEAR PROPER APPAREL. DO NOT
wear loose clothing, gloves, neckties,
rings, or jewelry which may get caught
in moving parts. Wear protective hair
covering to contain long hair and
wear non-slip footwear.
6. NEVER OPERATE MACHINERY
WHEN TIRED, OR UNDER THE
INFLUENCE OF DRUGS OR
ALCOHOL. Be mentally alert at all
times when running machinery.
Model G0466/G0469 Air Compressors
7. KEEP CHILDREN AND VISITORS
AWAY. Keep all children and visitors
a safe distance from the work area.
8. MAKE WORKSHOP CHILD PROOF.
Use padlocks, master switches, and
remove start switch keys. Shut off air
supply before leaving shop.
9. NEVER LEAVE UNATTENDED
TOOL CONNECTED TO AIR. DO
NOT leave before relieving the tool
of air pressure and disconnecting it
from the air hose.
10. DO NOT USE IN DANGEROUS
ENVIRONMENTS. DO NOT use in
damp, wet locations, or where flammable or noxious fumes may exist.
11. KEEP WORK AREA CLEAN AND
WELL LIT. Clutter and dark shad-
ows may cause accidents.
12. USE A GROUNDED EXTENSION
CORD RATED FOR THE MACHINE
AMPERAGE. Undersized cords
overheat and lose power. Replace
extension cords if they become damaged. DO NOT use extension cords
for 220V machinery.
13. ONLY ALLOW TRAINED AND
PROPERLY SUPERVISED PERSONNEL TO OPERATE MACHINERY. Make sure operation instruc-
tions are safe and understood.
14. MAKE SURE GUARDS ARE IN
PLACE AND WORK CORRECTLY
BEFORE USING MACHINERY.
15. CHECK FOR DAMAGED PARTS
BEFORE USING MACHINERY.
Check for binding and alignment of
parts, broken parts, part mounting,
loose bolts, and any other conditions
that may affect machine operation.
Repair or replace damaged parts.
16. REMOVE ADJUSTING KEYS AND
WRENCHES. Make a habit of check-
ing for keys and adjusting wrenches
before turning machinery ON.
17. REDUCE THE RISK OF
UNINTENTIONAL FIRING. DO NOT
carry tool with hand on trigger and
disconnect from air when not in use.
18. USE PROPER AIR HOSE for the
tool. Make sure your air hose is in
good condition and is long enough to
reach your work without stretching.
19. DO NOT FORCE MACHINERY. Work
at the speed for which the machine
or accessory was designed.
20. DO NOT OVERREACH. Keep proper footing and balance at all times.
21. SECURE WORKPIECE. Use clamps
or a vise to hold the workpiece when
practical. A secured workpiece protects your hands and frees both
hands to operate the tool.
22. USE SUGGESTED ACCESSORIES.
Refer to the instruction manual for
recommended accessories. The use
of improper accessories may cause
risk of injury.
23. MAINTAIN MACHINERY WITH
CARE. Keep tools lubricated and
clean for best and safest performance. Follow instructions for lubricating and changing accessories.
24. ALWAYS DISCONNECT FROM
POWER SOURC E BEFORE
SERVICING MACHINERY. Make
sure switch is in OFF position before
reconnecting.
25. DISCONNECT PNEUMATIC TOOLS
FROM COMPRESSOR. Always dis-
connect tools before servicing or
changing accessories.
26. BE AWARE THAT CERTAIN
WOODS MAY CAUSE ALLERGIC
REACTIONS IN PEOPLE AND
ANIMALS, ESPECIALLY WHEN
EXPOSED TO FINE DUST. Make
sure you know what type of wood
dust you will be exposed to and
always wear an approved respirator.
Model G0466/G0469 Air Compressors
-5-
Additional Safety Instructions
for Air Compressors
1. AIR NOZZLE. Never aim an air noz-
zle directly at yourself or others.
Compressed air can break the skin,
or enter the bloodstream through soft
tissue or a cut, and cause a stroke or
death.
2. AIR COMPRESSOR STORAGE.
DO NOT store the compressor while
plugged into power. If a leak develops, the compressor may run continuously, causing overheating and
possibly a fire.
3. UNATTENDED TOOLS. DO NOT
leave before relieving the tool of air
pressure and disconnecting it from
the air hose.
4. AVOID BURNS. DO NOT touch the
motor or the air supply pipe, they will
become hot during operation.
5. COMPRESSED AIR USE. Do not
use the compressor for filling breathing or diving tanks. Compressed air
from this compressor cannot be used
for pharmaceutical, food or health
applications.
6. AIR HOSE. Make sure your air hose
has a PSI rating exceeding the maximum PSI of your compressor, is in
good condition, and is long enough
to reach your work without stretching.
Make sure the air lines and power
cord do not come in contact with
sharp or abrasive objects.
7. PLASTIC (PVC) PIPE. DO NOT use
plastic pipe for high pressure air
lines. It could shatter, resulting in
serious injury.
8. TANK CORROSION. Drain the tank
after each use to prevent corrosion
and possible tank rupture. Inspect
the tank for unsafe conditions such
as rust, pin holes and cracks. NEVER
weld or drill holes in an air tank.
9. SAFETY VALVE OR PRESSURE
SWITCHES. NEVER adjust safety
valve or pressure switch to allow the
compressor to build higher PSI than
rated. Keep safety valve free from
paint and other accumulations to provide safety against over-pressure.
There is danger associated with the
use of air compressors. Accidents are
frequently caused by lack of familiarity or failure to pay attention. Use
this air compressor with respect and
caution to lessen the possibility of
operator injury. If normal safety precautions are overlooked or ignored,
serious personal injury may occur.
-6-
No list of safety guidelines can be
complete. Every environment is different. Always consider safety first,
as it applies to your individual working conditions. Use this and other
machinery with caution and respect.
Failure to do so could result in serious personal injury, damage to equipment or poor work results.
Model G0466/G0469 Air Compressors
SECTION 2: CIRCUIT
REQUIREMENTS
110V Operation
Serious personal injury could occur
if you connect the machine to the
power source before you have completed the set up process. DO NOT
connect the machine to the power
source until instructed to do so.
Amperage Draw
The motors on the air compressors will
draw the following amps:
G0466 Motor Draw ...................... 8 Amps
G0469 Motor Draw .....................14 Amps
Circuit Requirements
Only connect your machine to a circuit that meets the requirements below.
Always check to see if the wires and
circuit breaker in your circuit are capable
of handling the amperage draw from your
machine, as well as any other machines
that could be operating on the same circuit. If you are unsure, consult a qualified
electrician.
Model G0466
Minimum Circuit Requirement ..... 15 Amp
Model G0469
Minimum Circuit Requirement ..... 20 Amp
Plug/Receptacle Type
Plug Type ..............NEMA 5-15 (Figure 1)
Figure 1. Typical type 5-15 plug and
receptacle.
This machine must have a ground
prong in the plug to help ensure that it
is grounded. DO NOT remove ground
prong from plug to fit into a twopronged outlet! If the plug will not
fit the outlet, have the proper outlet
installed by a qualified electrician.
Model G0466/G0469 Air Compressors
-7-
Grounding
In the event of an electrical short, grounding reduces the risk of electric shock. The
grounding wire in the power cord must
be properly connected to the grounding
prong on the plug; likewise, the outlet
must be properly installed and grounded.
All electrical connections must be made
in accordance with local codes and ordinances.
El e ctro c utio n o r
fire could result if
this machine is not
grounded correctly or
if your electrical configuration does not
comply with local and
state codes. Ensure
compliance by checking with a qualified
electrician!
Extension Cords
The use of extension cords can cause
power loss and overheating in air compressors. When possible, locate the air
compressor where it can be plugged into
an outlet without the use of an extension
cord, and use an additional air hose to
reach the work area.
If you find it necessary to use an extension cord with your machine:
• Make sure the cord is rated Standard
Service (grade S) or better.
• The extension cord must contain a
ground wire and plug pin.
• Use at least a 14 gauge cord. Use a
12 gauge cord if the cord is between
25-100 feet.
• DO NOT use extension cords over 100
feet.
-8-
Model G0466/G0469 Air Compressors
SECTION 3: SET UP
Unpacking
Your air compressor left our warehouse in
a carefully packed crate or box. If you discover the air compressor is damaged after
you have signed for delivery, please imme-
diately call Customer Service at (570) 5469663 for advice.
Save the container and packing materials
for possible inspection by the carrier or its
agent. Otherwise, filing a freight claim can
be difficult.
Assembly
To assemble the air compressor:
1. Remove all packing materials and any
protective plastic bags, zip tie labels or
tags from the compressor.
2. Be sure the air filter is attached to the
cylinder head as shown in Figure 2.
NOTICE
Never run this compressor without
a full oil reservoir. The oil provides
lubrication to the cylinder rings,
which deliver the compressed air.
Severe damage to the internal moving parts can occur if there is not
adequate oil flow. Check the oil level
frequently, and change the oil every
3 months.
3. Add compressor oil, or ISO 100/SAE
30W non-detergent oil, to the crankcase. Remove the oil breather (inset
in Figure 3) on top of the crankcase
and add oil into the hole. The oil level
should be in the center of the sight
glass as shown in Figure 3.
Oil Breather
Figure 2. Air filter attached to
cylinder head.
Model G0466/G0469 Air Compressors
Figure 3. Proper oil level.
NOTICE
The oil breather releases excess
pressure from the crankcase.
Clogged holes in the oil breather
can lead to damaged oil seals, gaskets, and may cause the compressor to seize.
-9-
Placement
When determining where to set up the
air compressor in the shop or when taking the air compressor to a job site,
an important consideration is access to
an adequate and properly fused power
supply. Refer to SECTION 2: CIRCUIT
REQUIREMENTS for the needs of your
particular compressor.
Place the compressor on a solid and
level surface. Make sure that the hoses
attached to your pneumatic device are
unrestricted in movement and not subject
to being run over by vehicles or punctured
by sharp objects.
Since air compressors are often used for
a sustained period of time, sometimes in
restricted areas, wear ear protection to
avoid long term exposure to the noise.
Make sure the compressor is operating
in an environment where there are no
explosive, flammable, or caustic fumes or
gases. A clear and well ventilated area is
best for its safe operation.
Do not place the compressor next to
flammable liquids or gas! The compressor motor and air supply pipe
can reach high temperatures and
cause the flammable gas to ignite.
Keep work area clear from flammable
gas when using the compressor.
Do not place the compressor in a
paint spraying or gluing booth. The
electric motor on the compressor
could cause the fumes to explode.
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Model G0466/G0469 Air Compressors
SECTION 4: OPERATIONS
Operation Safety
Long term exposure to this machine
may cause hearing loss. To protect
your hearing, always wear ANSI
approved ear protection when operating this air compressor.
Operating this equipment has the
potential for flying debris to cause
eye injury. Always wear safety glasses or goggles when operating equip ment. Everyday glasses or reading
glasses only have impact resistant
lenses, they are not safety glasses.
Be certain the safety glasses you
wear meet the appropriate standards
of the American National Standards
Institute (ANSI) .
Starting
To start the air compressor:
1. Place the compressor on a solid, level
surface with access to a properly
fused power supply. DO NOT operate the compressor in an environment
where there are explosive, flammable,
or caustic fumes or gases.
2. Make sure the compressor switch is
in the OFF position (lever with red cap
shown in Figure 4) before connecting
to the power supply.
AUTO/OFF
Lever
Figure 4. AUTO/OFF lever.
3. Double check the oil level to make sure
the oil reservoir is full.
4. Connect the compressor to the power
supply.
5. Leave the drain valve open, flip the
switch to the AUTO position and allow
the compressor to run for 5 minutes
before completing Step 6.
Note: Whenever the compressor has
not been run for more than a few days,
allow it to run with the drain valve
open for 5 minutes to fully lubricate the
motor.
Model G0466/G0469 Air Compressors
-11-
6. Close the drain valve (Figure 5) to
allow the tank to build up pressure.
Figure 5. Drain valve.
7. Check the tank pressure gauge
(Figures 6 and 7) to see that the tank
pressure climbs to approximately 115120 PSI (around 8 BAR) and turns
OFF.
Line Pressure
Regulation
The air tool that you attach to the air
compressor should have a preferred PSI
operating level. Set the pressure to be
delivered to the tool according to the
required level of the tool.
To control the air supply to your tool:
1. Adjust the air control knob, shown in
Figure 8, to set the PSI that will be
delivered to your tool. Turn the knob
clockwise to increase the pressure or
counterclockwise to decrease the pressure.
Note: If the compressor does not turn
OFF at 120 PSI, flip the ON/OFF switch
to OFF before the pressure reaches
the maximum PSI shown on Page 3.
See Pressure Switch on Page 22 to
adjust the automatic shut-off.
Line
Pressure
Figure 6. G0466 Pressure gauges.
Tank
Pressure
Tank
Pressure
Line
Pressure
Air Control
Knob
Lock Ring
Figure 8. Tool air control knob.
2. Rotate the lock ring shown in Figure
8 against the bottom of the air control
knob to prevent changes in the air pressure.
Figure 7. G0469 Pressure gauges.
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Model G0466/G0469 Air Compressors
Connecting Tools
3. Connect an air line with a
to the quick-connect coupler on the air
compressor shown in Figure 9.
1
⁄4" NPT plug
When choosing air tools, consider the
amount of air used (cubic feet per minute or CFM) by the tool. Nailers and
staple guns have a low CFM requirement
because they use air in short bursts. A
paint sprayer or a pneumatic grinder uses
a more continuous stream of air requiring a high CFM. Make sure the air tool
you plan to connect does not exceed the
CFM output of your compressor. Most air
tools will have an air requirement stated
in terms of a specific CFM at a specific
pressure.
Air tools being operated with insufficient
air volume will not perform their function
satisfactorily and they will cause the air
compressor to run continually. When an
air compressor runs continually it may
overheat, causing damage to the compressor and the possibility of a fire. This
compressor is fitted with thermal protection inside the motor. If the compressor
overheats, the motor will automatically
turn OFF until it cools down.
To connect air tools to your air compressor:
1. Follow the compressor Starting instruc-
tions on Page 11.
2. Connect the tool to a good quality air
hose that is long enough to reach from
the point of use to the compressor.
Note: There are many styles of
quick connect couplers. If the quick
connect coupler included with the compressor does not fit the plug on your air
hose, purchase a matched set at your
local hardware store.
Figure 9. Quick connect coupler.
These air compressors are specifically designed for air tool operation.
DO NOT modify or use this machine
for any other purpose. Modifications
or improper use of this tool will void
the warranty. If you are confused
about any aspect of this machine,
DO NOT use it until your questions
have been answered. Serious personal injury may occur.
1
⁄4" NPT
Note: Be aware of the placement of
the hose to prevent damage. Make
certain the air hose is not located
where it can become constricted, cut
by a sharp object, or run over. Running
over a hose with a vehicle may not
cause an immediate leak, but it will
shorten the life of the hose.
Model G0466/G0469 Air Compressors
-13-
Storage
When storing your air compressor, follow these guidelines :
1. Turn the compressor switch lever to
OFF.
2. Unplug the compressor.
Failure to unplug the air compressor before storage may result in the
compressor running continuously,
causing overheating, damage to the
compressor, and possibly a fire.
3. Turn the regulator counterclockwise to
set the line pressure to zero.
4. Run the air tool to relieve the air pressure in the hose, then remove the air
hose and the tool.
5. Drain water from the tank as instructed
in Draining Tank on Page 16. Leave
the valve open until the next usage.
Note: Draining the air from the tank will
be extremely loud. Wear ear protection
when draining the tank.
6. Store the air compressor in its normal
operating position in a cool protected
area.
Water will condense in the air compressor tank. Water left in the tank
can cause the tank to weaken and
corrode, increasing the risk of tank
rupture.
Always disconnect the air hose from
tools whenever not in use or while
servicing! During maintenance, a
tool connected to air may operate
accidentally, causing serious personal injury!
-14-
Model G0466/G0469 Air Compressors
SECTION 5: MAINTENANCE
Schedule
Operating this equipment has the
potential to cause eye injury and
hearing loss. Always wear eye and
ear protection when operating an air
compressor. Be certain the safety
protection you wear meet the appropriate standards of the American
National Standards Institute (ANSI) .
For optimum per formance from your
machine, follow this maintenance schedule and refer to any specific instructions
given in this section.
Daily
1. Check the oil level! Use the sight glass
on the crankcase to make sure the oil
reservoir is at the correct level.
If the compressor is used on a daily basis,
perform the following checks each week.
Weekly
1. Blow dirt and dust off of the air filter
(Figure 10), then re-install.
Figure 10. Air filter foam element.
2. Check for loose bolts or fittings.
3. Clean off all dirt and dust from the cylin-
der head, motor, fan, air lines, exhaust
pipe, couplers and frame. Dirt can lead
to overheating.
4. Check air lines and connectors to make
sure they are in good condition.
5. Pull the safety drain valve to make sure
it is working properly (see Draining
Tank on Page 16).
2. Check for worn or damaged cords and
plugs.
3. Check for any other condition that
could hamper the safe operation of this
air compressor.
4. When finished using the air compressor, drain the condensation from the
tank as instructed in Draining Tank
on Page 16, and leave the drain valve
open until the next use.
Model G0466/G0469 Air Compressors
The air compressor will turn ON
automatically when it is set on AUTO.
When performing maintenance make
sure the AUTO/OFF lever is in the
OFF position, the compressor is
unplugged, and the air pressure has
been bled out of the tank.
-15-
Monthly
After the first 50 working hours or 30 days,
perform the following maintenance:
1. Change the oil in the air compressor
pump as described in Changing Oil on
Page 20.
Quarterly
After every 300 working hours or 3 months,
perform the following maintenance:
Pressure Safety
Valve
The pressure safety valve prevents damage to the tank by releasing pressure when
the tank reaches maximum capacity.
To check the pressure safety valve:
1. Change the oil in the air compressor
pump as described in Changing Oil on
Page 20.
2. Check for air leaks and correct as
needed.
Draining Tank
Some water may accumulate in the tank
depending on usage and humidity. Drain
water from the tank daily to increase the
lifespan of the compressor and air tools.
To drain the tank:
1. Leave the tank pressurized and open
the drain valve, shown in Figure 11, to
drain the water out of the tank.
Note: Draining the air from the tank will
be extremely loud. Wear ear protection
when draining the tank.
1. Locate the pressure safety valve shown
in Figure 12.
Pressure
Safety Valve
Figure 12. Pressure safety valve.
Releasing the safety valve can be
extremely loud. Protect your hearing
with ANSI approved ear protection.
2. Clean any dirt or dust from the pres-
sure safety valve.
3. Pull the metal ring on top of the safety
valve to ensure the valve will release
air. The pressure safety valve must be
replaced if it cannot be pulled, or if it
leaks after releasing pressure.
Figure 11. Tank drain valve.
-16-
Note: The safety valve is preset to
release air if the tank exceeds its maximum pressure. DO NOT try to adjust
the safety valve pressure setting!
Model G0466/G0469 Air Compressors
Maintenance Notes
Date
This page is for tracking oil changes and other maintenance procedures to ensure that they are performed at the scheduled intervals.
Model G0466/G0469 Air Compressors
-17-
SECTION 6: SERVICE
This section is provided for your convenience—it is not a substitute for the Grizzly Service
Department. If you need help troubleshooting, replacing parts, or you are unsure of how
to perform the procedures in this section, then feel free to call our Technical Support at
(570) 546-9663.
Troubleshooting
Symptom Possible Cause Possible Solution
Motor will not start.
Motor fails to develop
full power (output of
motor decreases rapidly
with decrease in volt
age at motor terminals).
Motor overheats and
thermal overload turns
motor OFF
.
1. Tank already pressurized.
2. Thermal overload switch
has tripped.
3. Low voltage.
4. Short circuit in motor or
cord, or loose connections.
5. Incorrect fuses or circuit
breakers in power line.
6. Pressure switch is bad.
1. Power line overloaded
with lights, appliances,
and other motors.
-
2. Undersized wires or circuits too long.
1. Cooling fins dirty.
2. Air filter clogged.
3. Compressor is running
too long without a break.
4. Air circulation through the
motor restricted.
1. Motor will not start if tank
is fully pressurized.
2. Wait for motor to cool.
3. Check power line for
proper voltage.
4. Inspect all connections on
motor for loose or shorted
terminals or worn insulation.
5. Install correct fuses or circuit breakers.
6. Replace the pressure
switch.
1. Reduce load on power
line.
2. Increase wire sizes or
reduce length of the circuit.
1. Clean cylinder fins and
motor area.
2. Inspect and clean air filter.
3. Do not use air tools with
CFM needs that exceed
the compressor CFM rating.
4. Clean out motor to pro-
vide normal air circulation.
-18-
Model G0466/G0469 Air Compressors
Symptom Possible Cause Possible Solution
Loud repetitious noise
coming from air com
pressor.
Low pressure at the
tool.
Low pressure at the
tanks, or tank pressure
drops after co
is turned OFF.
Compressor knocking. 1. Improper oil level.
Pressure relief valve
stays open and motor
won’t stop running.
mpressor
1. Pulley setscrews or keys
-
are missing or loose.
2. Motor fan is hitting the
cover.
1. Pressure regulator.
2. Air leaks in hoses.
3. Pressure gauge bad.
4. Pressure switch turns the
motor OFF too soon.
1. Air leaks in tanks or delivery pipes.
2. Drain valve open.
3. Air filter clogged.
4. Leaking check valve.
5. Pressure relief valve
releasing below 120 PSI.
6. Gaskets leaking.
7. Worn rings.
8. Pressure switch turns the
motor OFF too soon.
2. Air filter clogged.
3. Piston assembly loose.
1. Pressure switch
too high.
2. Faulty pressure switch,
unit is trying to overpressure the tank.
3. Faulty pressure relief
valve.
adjusted
1. Inspect keys and setscrews. Replace or
tighten if necessary.
2. Adjust fan cover mounting
position, tighten fan, or
shim fan cover.
1. Adjust pressure regulator,
if no improvement, inspect
regulator for leaks or
replace.
2. Check air hoses and all
connections for leaks (see
Page 21).
3. Replace the pressure
gauge.
4. Adjust the pressure switch
(see Page 22)
1. Check air tanks, pipes and
all connections for leaks
(see Page 21).
2. Close drain valve.
3. Inspect and clean air filter.
4. Repair the check valve
(see Page 20).
5. Replace pressure relief
valve.
6. Check gaskets on cylinder
head assembly, repair or
replace as needed.
7. Inspect and replace pump
piston rings.
8. Adjust the pressure switch
(see Page 22).
1. Check oil level and add oil
(see Page 9).
2. Inspect and clean air filter.
3. Inspect and repair piston
and connecting rod.
1. Adjust the pressure switch
(see Page 22)
2. Turn compressor OFF,
unplug from power supply, and empty tank.
DO NOT USE until switch
is replaced.
3. Relief valve is reliev-
ing pressure too early.
Replace pressure relief
valve.
Model G0466/G0469 Air Compressors
-19-
Symptom Possible Cause Possible Solution
Air leaks from pressure
switch.
Air is dirty or has exces
sive moisture.
1. Faulty check valve.
2. Faulty pressure switch.
-
1. Tank is not drained.
2. Delivery pipes are dirty.
1. Repair the check valve
(see Page 20).
2. Replace pressure switch.
1. Open drain valve and
make certain all the water
is drained out.
2. Remove delivery pipes,
clean out and replace.
Changing Oil
Change the oil in the air compressor pump
after the initial 50 hours, or 30 days of use;
and every 300 hours, or 3 months after the
first oil change. Use compressor oil or ISO
100/SAE 30W, non-detergent type oil.
To change the oil:
1. Unplug the air compressor and drain
all the air from the tank.
2. Place a container to catch the oil under
the oil sight glass.
3. Use a box end wrench or a socket
wrench to remove the oil sight glass
shown in Figure 13.
Oil Fill
Plug
Oil Sight
Glass
5. Replace the oil sight glass and remove
the fill plug shown in Figure 13.
6. Fill the crank case with oil until the oil
level is in the center of the sight glass,
then replace the oil fill plug.
Check Valve
The diaphragm and O-ring in the check
valve can become damaged, twisted, or
dirty and cause the check valve or pressure switch to leak air.
To fix the check valve:
1. Unplug the air compressor and drain
all the air from the tank.
2. Remove the cap from the check valve
(see Figure 14).
Figure 13. Oil sight glass.
4. Tip the compressor to drain all of the oil
from the crank case.
-20-
Cap
Figure 14. Check valve.
Model G0466/G0469 Air Compressors
3. Inspect the O-ring and diaphragm
(Figure 15) for damage and dirt.
Diaphragm
O-ring
Figure 15. Check valve diaphragm and
spring.
4. Replace any damaged parts and clean
any dirt off of the diaphragm and Oring.
5. Re-assemble the check valve. Make
sure the diaphragm presses squarely
against the air supply tube opening.
Fixing Air Leaks
Air leaks will cause low air output and
increase the time the compressor must
run.
To find air leaks:
1. Turn the compressor OFF when the
tank is fully pressurized and unplug the
compressor.
2. Listen for the sound of air to find fittings
that may be leaking.
3. Spray the suspected air leak with a
soap and water solution. If you see air
bubbles, you have found your leak.
To fix air leaking around fitting threads:
1. Unplug the air compressor and drain
all the air from the tank.
2. Unscrew the fitting that is leaking. Clean
and wrap teflon tape and/or spread pipe
dope on the threads.
Model G0466/G0469 Air Compressors
3. Re-install the fitting to the compressor.
To fix air leaking through a valve:
1. Unplug the air compressor and drain
all the air from the tank.
2. Remove the valve, clean it thoroughly,
then re-install with teflon tape and/or
pipe dope.
3. If the valve continues to leak, replace it
with a new valve.
-21-
Pressure Switch
The pressure switch has been factory set
for the highest PSI that is safe for this
compressor.
The pressure switch ensures the compressor will shut OFF when the air tank
reaches maximum PSI.
5. Turn the black plastic pressure adjustment screw (Figure 17) a half turn
clockwise to increase the maximum
tank pressure and a half turn counterclockwise to decrease the pressure.
Maximum
Tank Pressure
NOTICE
This air compressor has been factory
set to turn ON and OFF at the proper
PSI range. Only attempt to adjust the
pressure regulator if your air compressor does not reach, or pressurizes beyond the proper PSI level.
To adjust the pressure switch:
1. Unplug the air compressor from the
power supply.
2. Make sure the compressor switch is in
the OFF position.
3. Drain the pressure from the tank.
4. Remove the black AUTO/OFF switch
cover (Figure 16) by removing the
screw in the recess of the cover. Pull
the black cover up and set it aside.
Minimum Tank
Pressure
Figure 17. Pressure adjustment screws.
6. Adjust the metal pressure adjustment
screw to change how low the pressure
can drop before the motor turns ON.
7. Connect the compressor to the power
supply and start the compressor. If
the compressor does not automatically turn OFF at 120 PSI, flip the ON/
OFF switch to OFF before the pressure reaches 125 PSI.
8. If the PSI level still needs adjustment,
repeat Steps 1–7.
9. Replace the cover when the proper
adjustments have been completed.
Figure 16. Pressure switch cover.
-22-
Model G0466/G0469 Air Compressors
Service Notes
Model G0466/G0469 Air Compressors
-23-
G0466 Parts Breakdown
-24-
Model G0466/G0469 Air Compressors
G0466 Parts List
REF PART # DESCRIPTION REF PART # DESCRIPTION
1 PSB07M CAP SCREW M6-1 X 30 44 PN06M HEX NUT M5-.8
2 PLW03M LOCK WASHER 6MM 45 P0466045 CENTRIFIGAL SWITCH
3 P0466003 CYLINDER HEAD 46 PHTEK15M TAP SCREW M4 X 10
4 P0466004 EXHAUST ELBOW 47 PLW02M LOCK WASHER 4MM
5 P0466005 HEAD GASKET 48 P0466048 FAN
6 P0466006 VALVE PLATE 49 P0466049 COVER
7 P0466007 VALVE REED 50 PB95M HEX BOLT M5-.8 X 15
8 P0466008 VALVE PLATE GASKET 51 P0466051 HANDLE GRIP
9 P0466009 PISTON 51-1 P0466051-1 HANDLE
10 P0466010 UPPER CYLINDER GASKET 52 PHTEK5M TAP SCREW M4 X 12
11 P0466011 CYLINDER 53 PSB48M CAP SCREW M6-1 X 35
12 PSB02M CAP SCREW M6-1 X 20 54 P0466054 CAP SCREW M6-1 X 95
13 P0466013 LOWER CYLINDER GASKET 55 P0466055 SLEEVE
14 P0466014 COMPRESSION RING 56 P0466056 SLEEVE
15 P0466015 OIL SCRAPER RING 57 P0466057 QUICK CONNECT-FEMALE
16 P0466016 PISTON PIN 58 P0466058 REGULATOR
17 PR03M EXT RETAINING RING 12MM 59 P0466059 PRESSURE GAUGE
18 P0466018 CONNECTING ROD 60 P0466060 SAFETY VALVE
19 P0466019 ECCENTRIC 61 P0466061 PRESSURE GAUGE
20 PN01M HEX NUT M6-1 62 P0466062 STRAIN RELIEF
21 P0466021 OIL FILL CAP 63 P0466063 PRESSURE SWITCH
22 P0466022 HEX BOLT M5-.8 X 155 64 P0466064 CONNECT NPT 1/4
23 PW02M FLAT WASHER 5MM 65 P0466065 CONNECT NPT 1/4
24 P0466024 OIL SIGHT GAUGE 66 P0466066 PRESSURE RELIEF TUBE
25 P0466025 OIL SIGHT GAUGE SEAL 67 P0466067 COMPRESSION NUT
26 P0466026 CRANKCASE COVER 68 P0466068 POWER CORD 14GA
27 P0466027 COVER GASKET 69 P0466069 CABLE CONNECTOR (O)
28 P0466028 OIL SEAL 70 P0466070 CABLE CONNECTOR (U)
29 P0466029 CRANKCASE 71 P0466071 CABLE CONNECTOR (O)
30 P0466030 CAPACITOR 200MFD 125VAC 72 P0466072 MOTOR COVER
31 P0466031 CAPACITOR 40 MFD 250VAC 73 P0466073 TANK
32 PN03M HEX NUT M8-1.25 74 P0466074 CHECK VALVE
33 PW01M FLAT WASHER 8MM 75 P0466075 DRAIN VALVE NPT 1/4
34 PLW09M LOCK WASHER 3MM 76 P0466076 RUBBER FOOT
35 PS12M PHLP HD SCR M3-.5 X 6 77 PB09M HEX BOLT M8-1.25 X 20
36 P0466036 WAVY WASHER 17MM 78 PW01M FLAT WASHER 8MM
37 P6203 BALL BEARING 6203 79 PB07M HEX BOLT M8-1.25 X 25
38 PR18M EXT RETAINING RING 17MM 80 P0466080 OUTLET TUBE 10MM
39 P0466039 ROTOR 81 P0466081 FIN TUBING
40 P6004 BALL BEARING 6004 82 P0466082 EXHAUST NUT
41 P0466041 STATOR 83 PW04M FLAT WASHER 10MM
42 P0466042 REAR MOTOR COVER 84 P0466084 AIR FILTER KIT
43 PLW01M LOCK WASHER 5MM
Model G0466/G0469 Air Compressors
-25-
G0469 Parts Breakdown
-26-
Model G0466/G0469 Air Compressors
G0469 Parts List
REF PART # DESCRIPTION REF PART # DESCRIPTION
1 PB105M HEX BOLT M6-1 X 55 41 P0469041 STATOR 100V/60HZ
2 PLW03M LOCK WASHER 6MM 42 P0469042 REAR MOTOR COVER
3 P0469003 CYLINDER HEAD 43 P0469043 FAN
4 P0469004 EXHAUST ELBOW 44 P0469044 HEX BOLT M5-.8 X 120
5 P0469005 CYLINDER HEAD GASKET 45 PLW01M LOCK WASHER 5MM
6 P0469006 VALVE ASSEMBLY 46 P0469046 GASKET
7 P0469007 VALVE PLATE 47 PR02M EXT RETAINING RING 14MM
8 P0469008 VALVE PATCH 48 P0469048 COVER
9 P0469009 PISTON 49 PB95M HEX BOLT M5-.8 X 15
10 P0469010 CYLINDER GASKET 50 PW02M FLAT WASHER 5MM
11 P0469011 CYLINDER 51 P0469051 QUICK CONNECT-FEMALE
12 PSB31M CAP SCREW M8-1.25 X 25 52 P0469052 PRESSURE GAUGE
13 PLW04M LOCK WASHER 8MM 53 P0469053 PRESSURE GAUGE
14 P0469014 CYLINDER GASKET 54 P0469054 REGULATOR
15 P0469015 COMPRESSION RING 55 P0469055 CONNECT NPT1/4
16 P0469016 OIL RING 56 P0469056 PRESSURE SWITCH
17 P0469017 PISTON PIN 57 P0469057 STRAIN RELIEF
18 PR03M EXT RETAINING RING 12MM 58 P0469058 CONNECT
19 P0469019 CONNECTING ROD 59 P0469059 COMPRESSION NUT 3/8
20 P0469020 ECCENTRIC 60 P0469060 SPECIAL WASHER
21 P0469021 HEX BOLT M8-1.25 X 22 LH 61 P0469061 SAFETY RELIEF
22 P0469022 OIL FILL BREATHER PLUG 62 P0469062 COMPRESSION NUT
23 PB91M HEX BOLT M6-1 X 18 63 P0469063 TUBE
24 P0469024 OIL SIGHT 64 P0469064 POWER CORD
25 P0469025 O-RING 65 P0469065 CABLE CONNECTOR (O)
26 P0469026 CRANKCASE COVER 66 P0469066 CABLE CONNECTOR (U)
27 P0469027 GASKET 67 P0469067 HANDLE GRIP
28 P0469028 OIL SEAL 68 P0469068 CHECK VALVE
29 P0469029 CRANKCASE 69 P0469069 RUBBER FOOT
30 PN03M HEX NUT M8-1.25 70 PW01M FLAT WASHER 8MM
31 PW01M FLAT WASHER 8MM 71 PB09M HEX BOLT M8-1.25 X 20
32 PB15M HEX BOLT M8-1.25 X 40 72 P0469072 DRAIN VALVE
33 P0469033 LOCK GASKET 73 P0469073 TANK
34 P0469034 CAPACITOR 100 MFD 250 VAC 74 P0469074 COMPRESSION NUT 3/4
35 PW07M FLAT WASHER 3MM 75 P0469075 EXHAUST PIPE
36 PLW09M LOCK WASHER 3MM 76 P0469076 FIN TUBING
37 PS12M PHLP HD SCR M3-.5 X 6 77 P0469077 AIR FILTER
38 P6204 BALL BEARING 6204 78 PHTEK15M TAP SCREW M4 X 10
39 P0469039 ROTOR 79 P0469079 GASKET
40 P6202 BALL BEARING 6202 80 P0469080 PLUG
Model G0466/G0469 Air Compressors
-27-
WARRANTY AND RETURNS
Grizzly Industrial, Inc. warrants every product it sells for a period of 1 year to the original
purchaser from the date of purchase. This warranty does not apply to defects due directly
or indirectly to misuse, abuse, negligence, accidents, repairs or alterations or lack of
maintenance. This is Grizzly’s sole written warranty and any and all warranties that may
be implied by law, including any merchantability or fitness, for any particular purpose, are
hereby limited to the duration of this written warranty. We do not warrant or represent that
the merchandise complies with the provisions of any law or acts unless the manufacturer so
warrants. In no event shall Grizzly’s liability under this warranty exceed the purchase price
paid for the product and any legal actions brought against Grizzly shall be tried in the State
of Washington, County of Whatcom.
We shall in no event be liable for death, injuries to persons or property or for incidental,
contingent, special, or consequential damages arising from the use of our products.
To take advantage of this warranty, contact us by mail or phone and give us all the details.
We will then issue you a “Return Authorization Number,” which must be clearly posted on
the outside as well as the inside of the carton. We will not accept any item back without this
number. Proof of purchase must accompany the merchandise.
The manufacturers reserve the right to change specifications at any time because they
constantly strive to achieve better quality equipment. We make every effort to ensure that
our products meet high quality and durability standards and we hope you never need to
use this warranty.
Please feel free to write or call us if you have any questions about the machine or the
manual.
Grizzly Industrial, Inc.
1203 Lycoming Mall Circle
Muncy, PA 17756
Phone: (570) 546-9663
Fax: (800) 438-5901
E-Mail:
techsupport@grizzly.com
Web Site: http://www.grizzly.com
Thank you again for your business and continued support. We hope to serve you again
soon!
WARRANTY CARD
Name _________________________________________________________________
Street _________________________________________________________________
City _______________________ State _________________________ Zip _________
Phone # ____________________
Model # ____________________ Order # _______________________ Serial # ______
The following information is given on a voluntary basis. It will be used for marketing purposes to
help us develop better products and services.
Email ________________________ Invoice # _____
All information is strictly confidential.
1. How did you learn about us?
____
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3. What is your annual household income?
4. What is your age group?
5. How long have you been a woodworker/metalworker?
6. How many of your machines or tools are Grizzly?
7. Do you think your machine represents a good value? ____Yes ____No
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