3 HP AIR COMPRESSOR
MODEL H4519
INSTRUCTION MANUAL
COPYRIGHT © OCTOBER, 2003 BY GRIZZLY INDUSTRIAL, INC.
WARNING: NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE
OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL, INC.
#5770 PRINTED IN CHINA
ONLINE MANUAL DISCLAIMER
THE INFORMATION IN THIS MANUAL REPRESENTS THE CONFIGURATION OF THE MACHINE
AS IT IS CURRENTLY BEING SHIPPED. THE MACHINE CONFIGURATION CAN CHANGE AS
PRODUCT IMPROVEMENTS ARE INCORPORATED. IF YOU OWN AN EARLIER VERSION OF
THE MACHINE, THIS MANUAL MAY NOT EXACTLY DEPICT YOUR MACHINE . CONTACT CUS-
TOMER SERVICE IF YOU HAVE ANY QUESTIONS ABOUT DIFFERENCES. PREVIOUS VER-
SIONS ARE NOT AVAILABLE ONLINE.
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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 progres-
sion of symbols is described below. Remember that safety messages by them-
selves do not eliminate danger and are not a substitute for proper accident pre-
vention 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.
This symbol is used to alert the user to useful infor-
mation about proper operation of the equipment.
NOTICE
Safety Instructions For Pneumatic Tools
5. KEEP CHILDREN AND VISITORS
AWAY. All children and visitors
should be kept at a safe distance
from work area.
1. KEEP ALL SAFETY DEVICES IN
PLACE and in working order.
2. REMOVE ADJUSTING KEYS AND
WRENCHES. Form
a
habit of
6. MAKE
WORKSHOP
CHILD
checking to see that keys and
adjusting wrenches are removed
from tool before operation.
PROOF with padlocks, master
switches, or by removing air hoses
from tools.
3. KEEP WORK AREA CLEAN.
Cluttered areas and benches invite
accidents.
7. DO NOT FORCE TOOL. It will do
the job better and safer at the rate
for which it was designed.
4. DO NOT USE IN DANGEROUS
ENVIRONMENT. DO NOT use
pneumatic tools in damp or wet
locations, or where any flammable
or noxious fumes may exist. Keep
work area well lighted.
8. USE THE RIGHT TOOL. DO NOT
force tool or attachment to do a job
for which it was not designed.
9. DO NOT USE UNDER THE INFLU-
ENCE OF DRUGS OR ALCOHOL.
H4519 3 HP Air Compressor
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Safety Instructions For Pneumatic Tools
18. DISCONNECT TOOLS before ser-
10. 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.
vicing and changing accessories.
19. USE
THE
RECOMMENDED
Consult the
ACCESSORIES.
owner’s manual for recommended
accessories. The use of improper
accessories may cause risk of
injury.
11. WEAR PROPER APPAREL. DO
NOT wear loose clothing, gloves,
neckties, rings, bracelets, or other
jewelry which may get caught in
moving parts. Non-slip footwear is
recommended. Wear a protective
hair covering to contain long hair.
20. CHECK
DAMAGED
PARTS.
Before further use of the tool, a
guard or other part that is damaged
should be carefully checked to
determine that it will operate prop-
erly and perform its intended func-
tion. Check for alignment of moving
parts, binding of moving parts,
breakage of parts, mounting, and
any other conditions that may affect
its operation. A guard or other part
that is damaged should be properly
repaired or replaced.
12. ALWAYS USE SAFETY GLASSES.
Also use a face or dust mask if cut-
ting operation is dusty. Everyday
eyeglasses only have impact resis-
tant lenses, they are NOT safety
glasses.
13. WEAR APPROVED HEARING
PROTECTION.
14. SECURE WORK. Use clamps or a
vise to hold work when practical. It is
safer than using your hand and frees
both hands to operate tool.
21. NEVER LEAVE UNATTENDED
TOOL CONNECTED TO AIR.
Disconnect the air hose and DO
NOT leave tool until it is relieved of
any built up pressure.
15. DO NOT OVERREACH. Keep prop-
er footing and balance at all times.
16. MAINTAIN TOOLS WITH CARE.
Keep tools lubricated and clean for
best and safest performance. Follow
instructions for lubricating and
changing accessories.
22. NEVER ALLOW UNTRAINED
USERS TO USE THIS TOOL
WHILE UNSUPERVISED.
23. IF YOU ARE UNSURE OF THE
INTENDED OPERATION, STOP
USING THE TOOL. Seek formal
training or research books or maga-
zines that specialize in pneumatic
tools.
17. REDUCE THE RISK OF UNINTEN-
TIONAL STARTING. DO NOT carry
tool with hand on trigger and always
disconnect from air when not in use.
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7. DRAIN TANK DAILY OR AT THE
END OF EACH USE to avoid tank
corrosion and possible tank rupture.
8. AVOID TOUCHING THE TOP OF
THE MOTOR HOUSING, it will
become hot during operation.
9. MAKE SURE TO ADD OIL! Use
compressor oil or a non-detergent 30
weight oil.
10. NEVER LEAVE COMPRESSOR
TURNED ON WHEN NO ONE IS
AROUND! A leak could develop caus-
ing compressor to run continuously
causing overheating and possibly a
fire.
11. NEVER AIM THE AIR NOZZLE
DIRECTLY AT YOURSELF OR OTH-
ERS. Pressurized air can break or
bruise the skin.
Additional Safety For
Air Compressors
1. READ THIS ENTIRE MANUAL
BEFORE
OPERATING
THE
COMPRESSOR.
2. OPERATE THE COMPRESSOR IN
A WELL VENTILATED AREA free
of acids, vapor, explosive gases and
flammable or unstable materials.
3. DO NOT PULL ON THE GAUGES
OR REGULATORS TO MOVE THE
COMPRESSOR!
4. DO NOT USE THE COMPRESSOR
FOR FILLING BREATHING OR DIV-
ING APPARATUS. Compressed air
from this compressor cannot be used
for pharmaceutical, food or health
requirements without further treat-
ment.
12. NEVER LOAD YOUR COMPRES-
SOR PAST THE MAXIMUM PSI
RATING OF 115 PSI.
5. NEVER TRANSPORT THE COM-
PRESSOR UNDER PRESSURE.
Always release the pressure in the
storage tanks before moving.
6. NEVER RUN THE COMPRESSOR
BEYOND THE ADVISED DUTY
CYCLE! The advised duty cycle is
described on page 7.
Always be aware of the duty cycle
for your air compressor. Failure to
operate the air compressor proper-
ly could result in overheating and
motor seizure. There could also be
risk of fire hazard due to overheat-
ing. Be sure to use a compressor
capable of handling the air demand
of connected tools
Operating this compressor can pro-
pel objects into the air, causing
immediate eye damage. To protect
yourself, always wear American
National Standards Institute (ANSI)
approved safety glasses or goggles
when operating this equipment.
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INTRODUCTION AND SET UP
Commentary
If you have any comments regarding this
manual, please write to us at the following
address:
We are proud to offer the Grizzly Model
H4519 3 HP Air Compressor. This model
is part of a growing Grizzly family of fine
Grizzly Industrial, Inc.
Technical Documentation
P.O. Box 2069
C
/O
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 commit-
ment to customer satisfaction.
Bellingham, WA 98227-2069
Most important, we stand behind our tools.
If you have any service questions or parts
requests, please call or write us at the
location listed below.
The Model H4519 features a powerful
220V 3 HP motor, two cylinder aluminum
pump with cast iron cylinder liners, an
incredible 10.9 CFM@ 40 PSI, 9.1 CFM
@90 PSI, 11 gallon welded steel tank, and
a 115 PSI maximum working pressure.
The Model H4519 compressor fills its 11
gallon tank from 0 to 115 PSI in a little over
a minute!
Grizzly Industrial, Inc.
1203 Lycoming Mall Circle
Muncy, PA 17756
Phone: (570) 546-9663
Fax: (800) 438-5901
E-Mail: [email protected]
We are pleased to provide this manual
with the Model H4519. It was written to
encourage safety considerations and
guide you through general operating pro-
cedures and maintenance. This manual
represents our effort to produce the best
documentation possible.
The specifications, details, and pho-
tographs in this manual represent the
Model H4519 as supplied when the manu-
al was prepared. However, owing to
Grizzly’s policy of continuous improve-
ment, changes may be made at any time
with no obligation on the part of Grizzly.
Read the manual before assembly
and operation. Become familiar with
this tool, its safety instructions, and
its operation before beginning any
work. Serious personal injury may
result if safety or operational infor-
mation is not understood or followed.
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Unpacking
Site Placement
When determining where to set up the
compressor in the shop, or when taking the
air compressor to a job site, the most
important consideration is access to an
adequate and properly fused power sup-
ply. Refer to Circuit Requirements for the
needs of your particular compressor.
This air compressor is shipped from the
manufacturer in a carefully packed carton.
If you discover the machine is damaged
after you have signed for delivery, and the
truck and driver are gone, you will need to
file a freight claim with the carrier. Save the
containers and all packing materials for
possible inspection by the carrier or its
agent. Without the packing materials, filing
a freight claim can be difficult. If you need
assistance determining whether you need
to file a freight claim, or with the procedure
to file one, please contact our Customer
Service at (570) 546-9663.
Also, make sure the compressor is not
operating in an environment where there
are any explosive, flammable or caustic
fumes or gases. A clear and well ventilated
area is best for its safe operation.
Place the compressor on a solid and level
surface. Make sure that the hoses you
attach to your pneumatic device will be
unrestricted in movement and not subject
to being run over by vehicles or punctured
by any sharp objects in the area.
Since air compressors are often used for a
sustained period of time, sometimes in
restricted areas, it is also best to wear ear
protection to avoid long term exposure to
the sound of the electric motor and com-
pression pump.
The Model H4519 represents a heavy
load at 142 pounds. Seek assistance
before moving.
Do not place the compressor next to
any flammable liquids or gas! The
compressor cylinder head and feed
pipe can reach high temperatures and
could cause the flammable gas to
ignite. Keep work area clear from
flammable gas when using the com-
pressor.
Long term exposure to this machine
may cause hearing loss. Wear
approved hearing protection while
operating this machine to minimize
this risk!
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CIRCUIT REQUIREMENTS
220V Operation
Grounding
In the event of an electrical short, ground-
ing reduces the risk of electric shock by
providing a path of least resistance to dis-
perse electric current. These machines are
equipped with power cords having an
equipment-grounding conductor. See
Figure 1. The outlet must be properly
installed and grounded in accordance with
all local codes and ordinances.
Wiring:
The Model H4519 3 HP Air Compressor is
wired for 220V operation.
Amperage Draw
The Model H4519 has a 3 HP motor and
draws the following amperage.
Amperage Draw . . . . . . . . . . . .18 Amps
Circuit Breaker Requirements
Install your air compressor on a dedicated
circuit to reduce the possibility of overload-
ing the circuit and tripping the circuit break-
er. However, if an unusual load does not
exist, and the circuit breaker still trips, have
the circuit inspected by a qualified electri-
cian. Never use a larger circuit breaker
than stated below, or you will increase the
risk of fire.
Figure 1. Ground plug configuration.
Circuit Breaker...........20 Amp Double Pole
Extension Cords
If you find it necessary to use an extension
cord with your compressor, make sure the
cord is rated Standard Service (grade S) or
better. The extension cord must also con-
tain a ground wire and plug pin. Always
repair or replace extension cords when
they become worn or damaged.
Potential for electrical shock haz-
ard, this equipment must be
grounded. Verify that any existing
electrical outlet and circuit you
use is actually grounded.
Overheating, short circuit and fire
damage will result form inadequate
wiring. Follow the guidelines in this
section.
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PREPARING FOR USE
Before using your Grizzly Air
Compressor, follow these steps:
NOTICE
1. Remove all packing materials and any
protective plastic bags, zip-tie labels
or tags from the compressor cylinder
head or oil plug.
The machine should never be run
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
on a regular schedule.
2. Be sure the air filter is attached to the
cylinder head.
3. ADD OIL TO THE CRANKCASE. Oil
has NOT been supplied with your air
compressor. The oil level should be in
the center of the sight gauge shown in
Figure 2. Use compressor oil or non-
detergent 30 WT oil.
Duty Cycle
The Model H4519 3 HP Air Compressor
should not be operated on more than a
50% duty cycle. This means an air com-
pressor that pumps air for over 30 minutes
in one hour is considered misuse. This
could mean that the air compressor is
undersized for the required air demand.
The maximum compressor pump time per
hour is 30 minutes.
Figure 2.
Proper oil level.
Always be aware of the duty cycle for
your air compressor. Failure to oper-
ate the air compressor properly
could result in overheating and
motor seizure. There could also be
risk of fire hazard due to overheat-
ing. Be sure to use a compressor
capable of handling the air demand.
4. Make sure the drain valve under the
air tank is closed.
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STARTING
To start the air compressor:
Check the pressure gauge to see that the
tank pressure climbs to approximately 100-
115 PSI or around 8 BAR, then automati-
cally turns off.
1.
Make sure the compressor switch is
in the OFF position (knob with red
cap above pressure gauges shown
in Figure 3 pressed down) before
connecting the power supply.
Note—If the compressor does not auto-
matically kick off, flip the ON/OFF switch to
OFF before pressure gets too high. See
the Pressure Regulator sub-section.
Operating this equipment has the
potential for flying debris to cause
eye injury. Always wear safety glass-
es 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).
Figure 3. ON/OFF button.
2.
Close the drain valve, shown in
Figure 4, so the tank can build up
pressure.
Figure 4. Drain valve location.
3.
4.
5.
Double check the oil level to make
sure it is at the proper height.
Connect the compressor to the
power supply.
Pull the switch up to the ON position
to start compressor.
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AIR CONTROL
Air Release
Delivered Pressure
The tank pressure is displayed on the left
pressure gauge, and the air to be delivered
to the tool is displayed on the right pres-
sure gauge shown in Figure 5.
There are two ways to release air from the
compressor tank other than through your
regulator and the use of air tools:
—The drain valve.
—The safety drain valve.
To release air by using the drain valve,
simply turn the release nut to allow air to
flow out of the tank. The drain valve is
shown in Figure 5. The drain valve is also
used to drain condensation that builds up
in the tank.
The safety valve automatically releases
pressure if the tank reaches 130 PSI.
Figure 5. Pressure gauges.
To manually release the air in the tank
by using the safety drain valve:
To control the air delivery to your tool:
1. Locate the safety drain valve on the
tank. The drain valve is shown below
in Figure 7.
1. Adjust the air control knob, shown in
Figure 6, to set the PSI that will be
delivered to your tool. Turn the knob
clockwise to increase the pressure
and counter-clockwise to decrease
the pressure.
Figure 7. Safety drain valve.
2. Pull the metal ring on top of the safe-
ty valve to bleed pressure from the
tank. Note—The ring is preset to
release air if the tank exceeds its
maximum pressure of 130 PSI. DO
NOT try to adjust the safety valve!
Figure 6. Air control knob.
Note—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 this pre-
ferred level. Understand the duty cycle
of the air compressor that is described
on page 7.
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Tank Pressure
Regulator
To adjust the pressure regulator:
1. Unplug the air compressor from
the power supply.
The pressure regulator has been factory
set for the highest quality operating perfor-
mance.
2. Make sure the compressor switch is in
the OFF position.
3. Drain the pressure from the tank.
The pressure regulator adjusts the desired
PSI range where the air compressor kicks
in and out to keep the tank pressurized for
the best operating performance.
4. Remove the black ON/OFF switch
cover by removing the screw which is
in the recess on the top of the cover.
Pull the black cover up and set it
aside.
NOTICE
HP Air
Compressors have been factory set
to kick 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.
5. Turn the pressure adjustment bolt
(Figure 8) a half turn clockwise to
increase the tank pressure and a half
turn counter-clockwise to decrease
the pressure.
The Model H4519
3
6. Connect the compressor to the power
supply and start the compressor.
7. If the PSI level still needs adjustment
repeat steps 1 through 6.
8. Replace the cover when the proper
adjustments have been made.
Figure 8. Pressure Regulator.
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CONNECTING TOOLS
To connect air tools to your air com-
pressor:
Consideration should also be given to the
type of usage. A nailer or staple gun uses
air in short bursts and it is easier for the
compressor to maintain pressure. A paint
sprayer or grinder tends to use a more
continuous stream of air as these tools are
run for longer time periods. It is always
better to oversize a compressor to allow
for variation in the type of usage and the
number of tools to be powered. Air tools
being operated with insufficient air volume
will not perform their function satisfactorily.
1. Make sure the compressor model you
use has a sufficient cubic feet per
minute (CFM) output for the air tool
you plan to connect. (Most air tools
will have an air requirement stated in
terms of a specific CFM at a specific
pressure.)
2. The compressor should put out a
higher CFM than the tool requires.
—If you are connecting multiple tools
that will be used simultaneously, then
the CFM for each tool should be
added together and compared to the
compressor output value.
3. Connect the tool, using a good quality
air line with an adequate length to
reach from the compressor to the
point of use.
Note—Quick-connect couplers, shown in
Figure 9, are a good option for fast and
sure connection of tools and air hoses.
This accessory and many like it can be
found in the Grizzly Catalog.
Always disconnect air hose from
tools whenever not in use or while
servicing! During maintenance, a
tool connected to air may operate
accidentally, causing serious per-
sonal injury!
The Model H4519
3
HP Air
Compressors are specifically
designed for air tool operation. DO
NOT MODIFY OR USE THIS
MACHINE FOR ANY OTHER PUR-
POSE. Modifications or improper
use of this tool will void the warran-
ty. If you are confused about any
aspect of this machine, DO NOT use
it until you have answered all your
questions. Serious personal injury
may occur.
Figure 9. Quick connect couplers.
Make certain the air hose will not be placed
in a position where it can become con-
stricted or cut by a sharp object. Note—
Running over a hose with heavy vehicles
may not cause an immediate leak, but it
will shorten the life of the hose.
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MAINTENANCE
3. Clean off cylinder head cooling fins of
Before Each Use
any dirt which might hamper air flow.
4. Check for worn or damaged cords
Regular periodic maintenance on your Air
Compressor will ensure its optimum perfor-
mance. Make a habit of inspecting the fol-
lowing items before each time you use the
air compressor.
and plugs.
5. Check the air pressure in the tires
when transporting the air compressor.
6. Check for any other condition that
could hamper the safe operation of
this machine.
Check the following items:
1. Check Oil Level! Use the sight gauge
on the bottom of the crankcase to
make sure the oil level is at the prop-
er height.
Always wear safety glasses and use
extreme caution when working
around compressed air. The force of
the air stream can cause small bits
of debris to become airborne and
cause potential injury to the eyes or
other parts of the body.
2. Drain the tanks of any condensation
by opening the drain valve on the bot-
tom of the tank. Note—Depending
upon the amount of use and the
weather conditions, a certain amount
of condensed water may be released.
For longevity of the compressor seals
and the air tools you connect, it is best
to keep the tanks free of water. The
tanks are best drained if the drain
valve is open when the system is
pressurized. Once water has stopped
coming out, you can close the drain
valve.
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3. Remove the V-belt from the motor pul-
Changing V-belt
ley and fly pulley.
4. Install the new V-belt.
To change the V-belt drive on your air
compressor:
5. Reposition the motor in its original
place so the belt is tensioned, and
secure the four mounting bolts loos-
ened in step 2.
1. Remove the belt guard from the air
compressor shown in Figure 11. The
guard is attached to the compressor
frame by the two mounting bolts
shown in Figure 11.
6. A properly tensioned V-belt will have
about a 1⁄2 inch deflection as shown in
Figure 13.
7. Replace belt guard.
1
⁄2
Inch of Deflection
Figure 10. Belt Guard and
mounting bolts.
2. Loosen the four nuts (one side shown
in Figure 12) that secure the motor to
the compressor frame so the motor
can slide towards crankcase, relieving
the tension on the V-belt.
Figure 13. V-belt deflection.
Make sure the V-belt is properly ten-
sioned. If the V-belt is too tight, the
motor could overheat and cause
machine damage or fire. If the V-belt
is too loose, the belt will slip on the
pulley and cause belt damage and
compressor inefficiency.
Figure 11. Mounting bolt locations.
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After First 50
Hours Of Use
Weekly
If the compressor is used on a daily
basis, perform the following checks
each week:
After the first 50 working hours or 30
days, whichever comes first, perform
the following maintenance:
•
•
Rinse the air filter foam element in
water.
•
Replace the oil in the motor with com-
pressor oil (use ISO 100 of SAE 30W
viscosity, non detergent type).
Check for loose bolts or fittings.
•
•
Make sure that all the fittings are tight.
Remove the air filter foam element
and rinse it out with water. Allow it to
dry and re-install.
The Model H4519 3 HP Air
Compressors
are
specifically
designed for air tool operation. DO
NOT MODIFY AND/OR USE THIS
MACHINE FOR ANY OTHER PUR-
POSE. Modifications or improper
use of this tool will void the warran-
ty. If you are confused about any
aspect of this machine, DO NOT use
it until you have answered all your
questions. Serious personal injury
may occur.
•
Blow out any accumulated dirt
between the cylinder cooling fins.
Like all power tools, there is danger
associated with operating this
equipment. Accidents are frequently
caused by lack of familiarity or fail-
ure to pay attention. Use this tool
with respect and caution to lessen
the possibility of operator injury. If
normal safety precautions are over-
looked or ignored, serious personal
injury many occur.
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Every 300 Hours
Storage
When storing your air compressor fol-
low these guidelines:
After every 300 hours or 3 months of
regular operation, perform the following
maintenance items:
1. Set the ON/OFF button to OFF.
•
Change the compressor motor oil.
Use compressor oil or a non-deter-
gent 30 weight oil.
2. Turn the regulator counter-clockwise
to set the delivery pressure to zero.
3. Disconnect air tools or accessories.
•
•
•
•
Rinse the air filter foam element in
water.
4. Pull the safety drain valve ring to
bleed excess pressure from tank. The
pressure gauge for the tank should
read 15-20 PSI.
Check for air leaks and correct as
needed.
Clean the cylinder head fins for prop-
er cooling.
5. Drain water from the tank by opening
the drain valve on the bottom of the
tank.
Check for loose bolts or fittings.
6. Close the drain valve when all the
water has been released.
7. Store the air compressor in its normal
operating position in a cool protected
area.
Like all power tools, there is danger
associated with operating this
equipment. Accidents are frequently
caused by lack of familiarity or fail-
ure to pay attention. Use this
machine with respect and caution to
lessen the possibility of operator
injury. If normal safety precautions
are overlooked or ignored, serious
personal injury many occur.
NOTICE
Water will condense in the air com-
pressor tank. Water left in the tank
can cause the tank to weaken and
corrode, increasing the risk of tank
rupture.
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TROUBLESHOOTING
ACTION
CAUSE
PROBLEM
1. Low voltage.
2. Open circuit in
motor, switch or
cord.
1. Check power line for proper voltage.
2. Inspect all lead connections on motor,
switch and cord for loose or open connec-
tions.
Pump motor
will not start.
3. Tank already pres-
surized.
3. Motor will not start if tank pressure is too
high.
4. Thermal overload
switch.
4. Thermal overload switch has tripped, wait
for motor to cool, then reset switch by
pressing red button.
1. Short circuit in line
cord or plug.
1. Inspect cord or plug for damaged insula-
tion and shorted wires.
Pump motor
starts;
but
2. Short circuit in motor
or loose connec-
tions.
2. Inspect all connections on motor for loose
or shorted terminals or worn insulation.
fuses blow or
circuit break-
ers trip.
3. Incorrect fuses or
circuit breakers in
power line.
3. Install correct fuses or circuit breakers.
1. Air leaks in flexible
hoses.
1. Check air hoses and all connections for
leaks.
Low pressure
at the tool.
2. Pressure gauge bad.
2. Check pressure in line with known good
gauge.
3. Pressure regulator
bad.
3. Adjust pressure regulator, if no improve-
ment inspect regulator for leaks or
replacement.
4. Hose is too long.
4. Install a shorter hose.
1. Air leaks in tanks or
delivery pipes.
1. Check air tanks, pipes and all connections
for leaks.
Low pressure
at the tanks.
2. Drain valve open.
3. Safety valve releas-
ing below 125 PSI.
4. Air filter clogged.
5. Gaskets leaking.
2. Close drain valve.
3. Replace safety valve.
4. Inspect and clean air filter.
5. Check gaskets on cylinder head assem-
bly, repair or replace as needed.
6. Worn rings.
6. Inspect and replace pump piston rings.
1. Improper oil level.
2. Air filter clogged.
1. Check oil level and add oil.
2. Inspect and clean air filter.
3. Inspect and repair piston and connecting
rod.
Compressor
knocking.
3. Piston
loose.
assembly
-16-
H4519 3 HP Air Compressor
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ACTION
PROBLEM
CAUSE
1. Cooling fins dirty.
2. Air filter clogged.
3. Compressor
exceeding its duty-
cycle.
1. Clean cylinder fins and motor area.
2. Inspect and clean air filter.
3. Do not allow the compressor to run over
its recommended duty cycle.
Motor runs
hot.
is
Pressure relief
1. Turn compressor off, unplug from power
supply, drain tank. DO NOT USE until
switch is repaired or replaced.
2. Relief valve is relieving pressure too
early, test pressure relief and repair or
replace.
1. Faulty
pressure
switch, unit is trying
to overpressure the
tank.
valve
open
stays
and
motor won’t
stop running.
2. Faulty
relief valve.
pressure
Air leaks from
p r e s s u r e
switch.
1. Clean dirt or debris from rubber mem-
brane of check valve after removing top
nut.
1. Faulty check valves.
2. faulty
switch.
pressure
2. Repair or replace pressure switch.
Air is dirty or
has excessive
moisture.
1. Open drain cocks on both tanks and make
certain all condensation water is drained
out.
1. Tank is not drained.
2. Remove delivery pipes, clean out and
replace.
2. Delivery pipes are
dirty.
H4519 3 HP Air Compressor
-17-
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Model H4519 3 HP Air Compressor
57-6
57-3
57-5
57-4
35
36
34
33
37
32
57-1
31
57-2
30
29
21
20
28
27
26
19
18
17
46
45
44
16
49
48
25
24
47
43
42
41
50
40
23
22
39
51
15
14
52
38
53
54
58
5
13
12
11
65
10
9
1
5
2
3
67
66
55
56
4
60
61
64
57
62
6
7
8
63
68
69
70
72
10
71
9
73
74
78
79
81
75
80
9
76
77
82
83
-18-
H4519 3 HP Air Compressor
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DESCRIPTION
REF
PART #
1
2
3
4
5
6
7
8
P4519001
P4519002
P4519003
P4519004
P4519005
P4519006
PLW04M
PB26M
CRANK CASE
OIL PLUG
SEAL RING
OIL GLASS G1⁄2
BOTTOM PLATE SEAL RING
CRANKCASE BOTTOM PLATE
LOCK WASHER 8MM
HEX BOLT M8-1.25 X 30
HEX BOLT M8-1.25 X 20
LOCK WASHER 8MM
REAR COVER
GASKET
BALL BEARING 6202ZZ
OIL BREATHER
CYLINDER GASKET
CONNECTING ROD
INT RETAINING RING 12 MM
PISTON PIN 12 X 37.5
PISTON
9
PB09M
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
PLW04M
P4519011
P4519012
P6202
P4519014
P4519015
P4519016
P4519017
P4519018
P4519019
P4519020
P4519021
PLW04M
PB26M
P4519024
P4519025
P4519026
P4519027
P4519028
P4519029
P4519030
P4519031
P4519032
PLW04M
PSB98M
P4519035
PLW04M
PB15M
OIL RING
COMPRESSOR RING
LOCK WASHER 8MM
HEX BOLT M8-1.25 X 30
CYLINDER
PLATE GASKET
VALVE PLANK
CYLINDER HEAD GASKET
VALVE PLATE
UPPER PLATE
CYLINDER HEAD GASKET
CYLINDER HEAD
90˚ ELBOW 1⁄2 MPT 3⁄8-16 UNF
LOCK WASHER 8MM
CAP SCREW M8-1.25 X 160
AIR FILTER
LOCK WASHER 8MM
HEX BOLT M8-1.25 X 40
CRANKSHAFT
P4519038
P6202
BALL BEARING 6202ZZ
-19-
H4519 3 HP Air Compressor
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DESCRIPTION
REF
PART #
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
P4519040
P4519041
PLW04M
PB09M
P4519044
P4519045
PB20M
FRONT COVER GASKET
FRONT BEARING COVER
LOCK WASHER 8MM
HEX BOLT M8-1.25 X 20
PUMP PULLEY
GASKET 8MM
HEX BOLT M8-1.25 X 35
FLAT WASHER 8MM
HEX BOLT M8-1.25 X 40
SAFETY GUARD
V-BELT
KEY 8 X 8 X 40
MOTOR PULLEY
POWER WIRE
POWER CORD W/PLUG
HEX BOLT M8-1.25 X 30
LOCK WASHER 8MM
MOTOR
PW01M
PB15M
P4519049
P4519050
PK41M
P4519052
P4519053
P4519054
PB26M
PLW04M
P4519057
57-1 P4519057-1 MOTOR FAN
57-2 P4519057-2 MOTOR FAN COVER
57-3 P4519057-3 SWITCH COVER
57-4 PC250
57-5 PC040B
R CAPACITOR 250 MFD 250 VAC
S CAPACITOR 40 MFD 400 VAC
57-6 P4519057-6 CAPACITOR COVER
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
PB26M
HEX BOLT M8-1.25 X 30
LOCK WASHER 8MM
HANDLE GRIP
PLW04M
P4519060
P4519061
P4519062
P4519063
P4519064
P4519065
P4519066
P4519067
P4519068
P4519069
P4519070
P4519071
P4519072
SAFETY VALVE
PRESSURE SWITCH
PRESSURE GAUGE
NIPPLE 1⁄4 X 1⁄8 NPT
REGULATOR
PRESSURE GAUGE
DRAIN VALVE
FLARE CONNECTOR ID 10MM
EXHAUST PIPE 6MM
ELBOW 1⁄8 MPT X 1⁄16 MPT
CHECK VALVE
COMPRESSION NUT 3⁄8 FPT
-20-
H4519 3 HP Air Compressor
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DESCRIPTION
REF
PART #
73
74
75
76
77
78
79
80
81
82
83
P4519073
P4519074
P4519075
P4519076
PR06M
P4519078
P4519079
PLW04M
PN03M
EXHAUST PIPE
COOLING FIN
TANK
TANK WHEEL
EXT RETAINING RING 16MM
DRAIN VALVE 14MM
RUBBER FOOT
LOCK WASHER 8MM
HEX NUT M8-1.25
GRIZZLY LOGO
MACHINE ID LABEL
P4519082
P4519083
-21-
H4519 3 HP Air Compressor
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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 main-
tenance. 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 here-
by 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, con-
tingent, 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 con-
stantly 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 man-
ual.
Grizzly Industrial, Inc.
1203 Lycoming Mall Circle
Muncy, PA 17756
Phone: (570) 546-9663
Fax: (800) 438-5901
E-Mail:
Thank you again for your business and continued support. We hope to serve you again
soon!
-22-
H4519 3 HP Air Compressor
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WARRANTY CARD
Name__________________________________________________________
Street__________________________________________________________
City____________________State________Zip_________
Phone Number____________E-Mail___________________FAX____________
Model #_______________Serial#________________Order #______________
The following information is given on a voluntary basis. It will be used for marketing purposes to help
us develop better products and services. Of course, all information is strictly confidential.
9. How many of the machines checked above are
Grizzly? ____________
1. How did you learn about us?
___Advertisement
___Friend
___Catalog
___World Wide Web
___Other__________________________
___Card Deck
10. Which portable/hand held power tools do you own?
Check all that apply.
___Belt Sander
___Biscuit Joiner
___Circular Saw
___Detail Sander
___Drill/Driver
___Orbital Sander
___Palm Sander
___Portable Planer
___Saber Saw
___Reciprocating Saw
___Router
2. What is your annual household income?
___$20,000-$29,999
___$30,000-$39,999
___$40,000-$49,999
___$50,000-$59,999
___$60,000-$69,999
___$70,000-$79,999
___$80,000-$89,999
___$90,000 +
___Miter Saw
___Other_________________________________
3. What is your age group?
___20-29
11. What machines/supplies would you like Grizzly
Industrial to carry?
___50-59
___60-69
___70 +
___30-39
___40-49
________________________________________
________________________________________
________________________________________
________________________________________
4. How long have you been a woodworker?
___0 - 2 Years
___2 - 8 Years
___8 - 20 Years
___20+ Years
12. What new accessories would you like Grizzly
Industrial to carry?
5. How would you rank your woodworking skills?
________________________________________
________________________________________
________________________________________
________________________________________
___Simple
___Advanced
___Intermediate
___Master Craftsman
6. What stationary woodworking tools do you own?
Check all that apply.
13. What other companies do you purchase your tools
and supplies from?
___Air Compressor
___Band Saw
___Panel Saw
___Planer
_________________________________________
_________________________________________
_________________________________________
___Drill Press
___Power Feeder
___Radial Arm Saw
___Shaper
___Jointer
___Lathe
___Drum Sander
___Dust Collector
___Spindle Sander
___Table Saw
14. Do you think your purchase represents good value?
___Yes
___No
___Mortiser
___Wide Belt Sander
___Horiz.Boring Machine
___Vacuum Veneer Press
___Other______________________________
15. Would you recommend Grizzly to a friend?
___Yes ___No
16. Would you allow us to use your name as a refer-
ence for Grizzly customers in your area? Note: We
never use names more than three times.
7. How many of your woodworking machines are
Grizzly? _____________
___Yes
___No
8. Which benchtop tools do you own? Check all
that apply.
17.Comments:________________________________
_________________________________________
_________________________________________
_________________________________________
___1"x42" Belt Sander ___6" - 8" Grinder
___5" - 8" Drill Press ___Mini Lathe
___8" Table Saw
___Scroll Saw
___8" - 10" Bandsaw
___Disc/Belt Sander
___Spindle/Belt Sander ___Mini Jointer
___10"-12"Thickness Planer
___Other______________________________
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Send a Grizzly Catalog to a friend:
Name________________________________
Street________________________________
City______________State______Zip_______
FOLD ALONG DOTTED LINE
Place
Stamp
Here
GRIZZLY INDUSTRIAL, INC.
P.O. BOX 2069
BELLINGHAM, WA 98227-2069
TAPE ALONG EDGES--PLEASE DO NOT STAPLE
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