PANCAKE AND HOT DOG
AIR COMPRESSORS
MODEL H3370/H3371
INSTRUCTION MANUAL
COPYRIGHT © APRIL, 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.
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.
Download from Www.Somanuals.com. All Manuals Search And Download.
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.
Model H3370/H3371 Air Compressors
-1-
Download from Www.Somanuals.com. All Manuals Search And Download.
Safety Instructions For Pneumatic Tools
19. USE
THE
RECOMMENDED
Consult the
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.
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.
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.
14. NEVER USE PLASTIC (PVC) PIPE
FOR COMPRESSED AIR. Serious
injury could result.
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.
18. DISCONNECT TOOLS before ser-
vicing and changing accessories.
-2-
Model H3370/H3371Air Compressors
Download from Www.Somanuals.com. All Manuals Search And Download.
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
Additional Safety For
Air
Compressors
become hot during operation.
1. READ THIS ENTIRE MANUAL
9. MAKE SURE TO ADD OIL! Use
BEFORE
OPERATING
THE
compressor oil or a non-detergent 30
weight oil.
COMPRESSOR.
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.
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!
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!
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.
NOTICE
Always be aware of the duty cycle
for your air compressor. Failure to
operate 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
of connected tools
Model H3370/H3371Air Compressors
-3-
Download from Www.Somanuals.com. All Manuals Search And Download.
INTRODUCTION AND SET UP
Commentary
If you have any comments regarding this
manual, please write to us at the following
We are proud to offer the Grizzly Model
H3370 Pancake and H3371 Hot Dog AIr
Compressors. These models are part of a
growing Grizzly family 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.
address:
Grizzly Industrial, Inc.
Technical Documentation
C
/O
P.O. Box 2069 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 H3370 features a 2.5 HP
motor, a cast iron direct drive pump, 4 gal-
lon tank capacity that delivers 4.6 CFM
@90 PSI and 5.9 CFM @40 PSI, and is oil
lubricated. The H3370 has a maximum PSI
rating of 115.
Grizzly Industrial, Inc.
1203 Lycoming Mall Circle
Muncy, PA 17756
Phone: (570) 546-9663
Fax: (800) 438-5901
The Model H3371 features a 2.5 HP
motor, a cast iron direct drive pump, two 2
gallon tanks that deliver 4.6 CFM @90 PSI
and 5.9 CFM @40 PSI, and is oil lubricat-
ed. The H3371 has a maximum 115 PSI
rating.
E-Mail: [email protected]
We are pleased to provide this manual
with the Model H3370 and H3371. It was
written to encourage safety considerations
and guide you through general operating
procedures and maintenance. This manu-
al represents our effort to produce the best
documentation possible.
The specifications, details, and pho-
tographs in this manual represent the
Model H3370/H3371 as supplied when the
manual 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 machine, its safety instructions,
and its operation before beginning
any work. Serious personal injury
may result if safety or operational
information is not understood or fol-
lowed.
-4-
Model H3370/H3371Air Compressors
Download from Www.Somanuals.com. All Manuals Search And Download.
Unpacking
Site Placement
When determining where to set up the air
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 ventilat-
ed 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 piston.
The Model H3370/H3371 represents
a heavy load at 60 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!
Model H3370/H3371Air Compressors
-5-
Download from Www.Somanuals.com. All Manuals Search And Download.
CIRCUIT REQUIREMENTS
110V 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.
The Model H3370/H3371 Air Compressor
is wired for 110/120V, single-phase opera-
tion only. The maximum amperage draw
for the machine is 17 amps, with a fusing
level rating of 20 amps.
It is best to operate a compressor on a
dedicated circuit, i.e. a circuit where there
are no other electrical appliances plugged
in. The fuse requirements above assume
the use of a circuit breaker or a slow-blow
fuse. If an unusual load does not exist and
the compressor still breaks the circuit, con-
tact a qualified electrician or our service
department at (570) 546-9663.
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. Refer to the chart in the standard
safety instructions to determine the mini-
mum gauge for the extension cord. The
extension cord must also contain a ground
wire and plug pin. Always repair or replace
extension cords when they become worn
or damaged.
Figure 1. Ground plug configuration.
Overheating, short circuit and fire
damage will result from inadequate
wiring. Follow the guidelines in this
section.
Potential for electrical shock hazard,
this equipment must be grounded.
Verify that any existing electrical
outlet and circuit you use is actually
grounded.
-6-
Model H3370/H3371Air Compressors
Download from Www.Somanuals.com. All Manuals Search And Download.
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.
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
every 3 months.
2. Be sure the air filter is attached to the
cylinder head as shown in Figure 2.
5. Know and understand the duty cycle
of the compressor before operating.
Duty Cycle
The Model H3370/H3371 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.
Note—The maximum compressor pump
time per hour is 30 minutes.
Figure 2. Air filter attached to
cylinder hear.
3. ADD OIL TO THE CRANKCASE. Oil
has been supplied with your air com-
pressor. Remove the oil breather on
top of the crankcase and add oil into
the hole. The oil level should be in the
center of the sight gauge shown in
Figure 3.
Overheating, short circuit and fire
damage will result form operating
beyond the recommended duty
cycle. Severe injury and property
damage could occur.
Figure 3.
Proper oil level.
4. Make sure the drain valve on the air
tank is closed.
Model H3370/H3371Air Compressors
-7-
Download from Www.Somanuals.com. All Manuals Search And Download.
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 (lever with red cap
above pressure gauges shown in
Figure 4) before connecting to 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 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 4. ON/OFF lever.
2. Close the drain valve, shown in
Figure 5, so the tank can build up
pressure.
Figure 5. Drain valve location.
3. Double check the oil level to make
sure it is at the proper height.
4. Connect the compressor to the power
supply.
5. Flip the switch to the ON position
(where it reads AUTO).
-8-
Model H3370/H3371Air Compressors
Download from Www.Somanuals.com. All Manuals Search And Download.
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 6.
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, you
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 6. 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 8.
1. Adjust the air control knob, shown in
Figure 7, 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 8. 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. DO NOT try to
adjust the safety valves pressure set-
ting!
Figure 7. 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 the tools
preferred level. Understand the duty
cycle of the air compressor.
Model H3370/H3371Air Compressors
-9-
Download from Www.Somanuals.com. All Manuals Search And Download.
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 sets the turn off
PSI setting for the air compressor tank.
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
The Model H3370/H3371 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 screw
(Figure 9) a half turn clockwise to
increase the tank pressure and a half
turn counter-clockwise to decrease
the pressure.
6. Connect the compressor to the power
supply and start 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 9. Pressure Regulator
-10-
Model H3370/H3371Air Compressors
Download from Www.Somanuals.com. All Manuals Search And Download.
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 10, are a good option for fast and
sure connection of tools and air hoses.
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
H3370/H3371
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 10. Quick connect couplers
These couplers are included with the air
compressor. Make certain the air hose will
not be placed in a position where it can
become constricted or cut by a sharp
object. Note—Running over a hose with
heavy vehicles may not cause an immedi-
ate leak, but it will shorten the life of the
hose.
Model H3370/H3371Air Compressors
-11-
Download from Www.Somanuals.com. All Manuals Search And Download.
MAINTENANCE
Each Use
Regular periodic maintenance on your
air compressor will ensure its optimum
performance. Make a habit of inspect-
ing your compressor each time you use
it. Check the following items:
The air compressor will cycle auto-
matically when it is on. When per-
forming any type of maintenance
always make sure the AUTO/OFF
lever is in the OFF position the unit
is unplugged and bleed out all tank
pressure.
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.
2. Drain tanks daily of any condensation
by opening the drain valve on the bot-
tom of the tank and leave open until
the next time it is used.
3. Clean off the cylinder head cooling
fins. Dirt interferes with heat transfer.
4. Check for worn or damaged cords
and plugs.
Depending upon the amount of use and
the surrounding humidity, a certain amount
of condensed water may accumulate in the
tanks. For longevity of the compressor
seals and the air tools you connect, it is
best to drain water from the tanks. The
tanks are best drained if the drain valve is
open when the system is pressurized.
5. Check for any other condition that
could hamper the safe operation of
this machine.
6. Check the safety drain valve to make
sure it is working properly.
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. Never let the
full force of the air stream come in
direct contact with the skin as it can
cause abrasions or bruising, pene-
tration of skin and could even lead
to death!
Always drain the air from the tank
before performing any maintenance
or transporting your air compressor.
Damage to the air compressor while
under pressure could cause burst-
ing or explosion and injury or prop-
erty damage could occur.
-12-
Model H3370/H3371Air Compressors
Download from Www.Somanuals.com. All Manuals Search And Download.
After First 50
Hours of Use
Weekly
After the first 50 working hours or 30
days, whichever comes first, the follow-
ing maintenance should be done.
If the compressor is used on a daily
basis, perform the following checks
each week.
1. Replace the oil in the motor with com-
pressor oil or use ISO 100 or SAE
30W viscosity, non detergent type oil.
1. Rinse the air filter foam element in
water.
2. Check for loose bolts or fittings.
2. Check to make sure that all the fittings
are tight.
3. Clean off all foreign material from
cylinder head, motor, fan, air lines,
exhaust pipe, couplers and frame.
3. Remove the air filter foam element
shown in Figure 11 and rinse it out
with water. Allow it to dry and re-
install.
4. Check air lines and connectors to
make sure they are in good condition.
Figure 11. Air filter foam element
4. Blow out any dirt that has accumulat-
ed between the cylinder cooling fans.
Model H3370/H3371Air Compressors
-13-
Download from Www.Somanuals.com. All Manuals Search And Download.
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 compressor switch lever to
OFF.
1. Change the compressor motor oil.
2. Turn the regulator counter-clockwise
2. Rinse the air filter foam element in
to set the delivery pressure to zero.
water.
3. Remove the air tool or accessory.
3. Check for air leaks and correct as
needed.
4. Pull the safety drain valve ring to
bleed excess pressure from tank. The
pressure gauge for the tank should
read 15-20 PSI.
4. Clean the cylinder head fins for prop-
er cooling.
5. Check for loose bolts or fittings.
5. Drain water from the tank by opening
the drain valve on the bottom of the
tank.
6. Close the drain valve when all the
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.
water has been released.
7. Store air compressor in its normal
operating position in a cool protected
area.
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
-14-
Model H3370/H3371Air Compressors
Download from Www.Somanuals.com. All Manuals Search And Download.
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.
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.
6. Worn rings.
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. 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
1. Cooling fins dirty.
2. Air filter clogged.
1. Clean cylinder fins and motor area.
2. Inspect and clean air filter.
Motor runs hot
Model H3370/H3371Air Compressors
-15-
Download from Www.Somanuals.com. All Manuals Search And Download.
ACTION
PROBLEM
CAUSE
3. Compressor
exceeding its duty-
cycle.
is
3. Do not allow the compressor to run over
its recommended duty cycle.
Motor runs hot
1. Faulty
pressure
switch, unit is trying
to overpressure the
tank.
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.
Pressure relief
valve
open
stays
and
motor won’t
stop running.
2. Faulty
relief valve.
pressure
1. Faulty check valves.
1. Clean dirt or debris from rubber mem-
brane of check valve after removing top
nut.
Air leaks from
p r e s s u r e
switch
2. faulty
switch.
pressure
2. Repair or replace pressure switch.
1. Tank is not drained.
1. Open drain cocks on both tanks and make
certain all condensation water is drained
out.
2. Remove delivery pipes, clean out and
replace.
Air is dirty or
has excessive
moisture.
2. Delivery pipes are
dirty.
-16-
Model H3370/H3371Air Compressors
Download from Www.Somanuals.com. All Manuals Search And Download.
Model H3370 Pancake Air Compressor
1
2
3
78
5
4
48
6
37
44
36
7
7
8
45
35
6
34
49
79
10
15
15
16
50
11
47
46
12
18
9
14
31
17
13
42
54
43
30
41
40
39
56
51
19
38
22
23
29
21
55
61
33
28
52
73
20
32
30
53
27
57
58
59
52
26
25
67
24
68
62
69
60
63
75
76
74
65
77
30
32
70
71
66
32
72
64
Model H3370/H3371Air Compressors
-17-
Download from Www.Somanuals.com. All Manuals Search And Download.
Model 3370
DESCRIPTION
HEX BOLT M6-1 X 55
LOCK WASHER 6MM
CYLINDER HEAD
90˚ ELBOW 3⁄8 MPT X 3⁄4-16 UNF
GASKET
VALVE PLATE
VALVE BLADE
GASKET-VALVE SPACER
PISTON
GASKET-CYLINDER
CYLINDER
CAP SCREW M8-1.25 X 25
LOCK WASHER 8MM
GASKET-CYLINDER TO CRANKCASE
COMPRESSION RING
OIL RING
PISTON PIN 12 X 37.5MM
INT RETAINING RING 12MM
CONNECTING ROD
CRANK
CAP SCREW M8-1.25 X 22LH
OIL BREATHER 16MM
HEX BOLT M6-1.0 X 18
OIL SIGHT GLASS G1⁄2
SEAL RING (M20 X 26 X3)
CRANKCASE COVER
GASKET
REF
1
2
3
4
5
6
7
PART #
PB105M
PLW03M
PH3370003
PH3370004
PH3370005
PH3370006
PH3370007
PH3370008
PH3370009
PH3370010
PH3370011
PSB31M
8
9
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
40
PLW04M
PH3370014
PH3370015
PH3370016
PH3370017
PR49M
PH3370019
PH3370020
PSB102M
PH3370022
PB91M
PH3370024
PH3370025
PH3370026
PH3370027
PH3370028
PH3370029
PN03M
PW01M
PW01M
PB20M
PC120
PW07M
PLW09M
PS12M
P6202
PH3370039
P6202
OIL SEAL 20 X 40 X 7
CRANKCASE
HEX NUT M8-1.25
FLAT WASHER 8MM
FLAT WASHER 8MM
HEX BOLT M8-1.25 X 35
CAPACITOR 120 MFD 250V
FLAT WASHER 3MM
LOCK WASHER 3MM
PHLP HD SCR M3-.5 X 6
FRONT BEARING 6202
ROTATOR 67MM
REAR BEARING 6202
-18-
Model H3370/H3371Air Compressors
Download from Www.Somanuals.com. All Manuals Search And Download.
Model 3370
DESCRIPTION
REF
PART #
41
42
43
44
45
46
47
48
49
PH3370041
PH3370042
PH3370043
PB106M
PLW01M
PH3370046
PR02M
PH3370048
PFB05
PW03M
PH3370051
PH3370052
PH3370053
PH3370054
PH3370055
PH3370056
PH3370057
PH3370058
PH3370059
PH3370060
PH3370061
PH3370062
PH3370063
PH3370064
PH3370065
PH3370066
PH3370067
PH3370068
PH3370069
PH3370070
PH3370071
PB09M
STATOR 115V/60HZ
FAN COVER
MOTOR FAN
HEX BOLT M5-0.8 X 115
LOCK WASHER 5MM
GASKET
EXT RETAINING RING 14MM
MOTOR COVER
FLANGE BOLT M5-.8 X 15
FLAT WASHER 6MM
QUICK COUPLER
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
PRESSURE GAUGE
HEX BUSHING OD 1⁄4 X ID 1⁄8 MPT
REGULATOR
NIPPLE NPT 1⁄4 X 40
PRESSURE SWITCH-LF10
1
STEM ADAPTER ⁄4 MPT
FLARE CONNECTOR 3⁄8 FPT
PLASTIC GASKET 6MM
SAFETY VALVE 1⁄4 NB 130 PSI
BUTTON
FLARE CONNECTOR 10MM
RELIEF COPPER PIPE 6 X 590
POWER CORD 14# X 2M
RING TERMINAL #10
FORK TERMINAL #10
GRIP COVER 25MM
CHECK VALVE
90˚ ELBOW 1⁄8 MPT X 1⁄8 MPT
DRAIN VALVE 14MM
RUBBER FOOT
HEX BOLT M8-1.25 X 20
1
PH3370073
PH3370074
PH3370075
PH3370076
PLN05
PLUG ⁄4 MPT
TANK 4 GALLON PANCAKE
DISCHARGE PIPE (M12 X 360)
COOLER M12 X 380
LOCK NUT 3/4-16
AIR INTAKE FILTER
PH3370078
PH3370079
THERMAL OVERLOAD PROTECTOR
Model H3370/H3371Air Compressors
-19-
Download from Www.Somanuals.com. All Manuals Search And Download.
Model H3371 Hot Dog Air Compressor
1
2
3
75
5
4
48
6
37
44
36
7
7
8
45
35
6
34
15
15
16
49
10
76
50
11
47
46
18
9
17
12
13
14
31
42
54
43
30
41
40
39
56
19
51
38
22
23
29
21
55
52
59
33
32
28
20
30
53
52
57
27
26
25
24
60
58
65
61
66
72
63
73
74
71
64
68
70
69
62
67
-20-
Model H3370/H3371Air Compressors
Download from Www.Somanuals.com. All Manuals Search And Download.
Model 3371
DESCRIPTION
REF
PART #
PB105M
PLW03M
1
2
3
4
5
6
7
8
HEX BOLT M6-1 X 55
LOCK WASHER 6MM
CYLINDER HEAD
90˚ ELBOW 3⁄8 MPT X 3⁄4-16 UNF
GASKET
VALVE PATCH
VALVE PLANK SPACER
GASKET
PH3370003
PH3370004
PH3370005
PH3370006
PH3370007
PH3370008
PH3370009
PH3370010
PH3370011
PSB31M
9
PISTON
GASKET-CYLINDER
CYLINDER
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
CAP SCREW M8-1.25 X 25
LOCK WASHER 8MM
GASKET-CYLINDER TO CRANKCASE
COMPRESSION RING
OIL RING
PISTON PIN 12 X 37.5MM
INT RETAINING RING 12MM
CONNECTING ROD
CRANK
CAP SCREW M8-1.25 X 22LH
OIL BREATHER 16MM
HEX BOLT M6-1.0 X 18
OIL SIGHT GLASS G1⁄2
SEAL RING (M20 X 26 X 3)
CRANKCASE COVER
GASKET
PLW04M
PH3370014
PH3370015
PH3370016
PH3370017
PR49M
PH3370019
PH3370020
PSB102M
PH3370022
PB91M
PH3370024
PH3370025
PH3370026
PH3370027
PH3370028
PH3370029
PN03M
PW01M
PW01M
PB20M
PC120
PW07M
PLW09M
PS12M
P6202
OIL SEAL 20 X 40 X 7
CRANKCASE
HEX NUT M8-1.25
FLAT WASHER 8MM
FLAT WASHER 8MM
HEX BOLT M8-1.25 X 35
CAPACITOR 120 MFD 250V
FLAT WASHER 3MM
LOCK WASHER 3MM
PHLP HD SCR M3-.5 X 6
FRONT BEARING 6202
ROTATOR 67MM
PH3370039
Model H3370/H3371Air Compressors
-21-
Download from Www.Somanuals.com. All Manuals Search And Download.
Model 3371
DESCRIPTION
REF
PART #
P6202
PH3370041
PH3370042
PH3370043
PB106M
40
41
42
43
44
REAR BEARING 6202
STATOR 115V/ 60HZ
FAN COVER
MOTOR FAN
HEX BOLT M5-0.8 X 115
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
PLW01M
PH3370046
PR02M
PH3370048
PFB05
PW03M
LOCK WASHER 5MM
GASKET
EXT RETAINING RING 14MM
MOTOR COVER
FlANGE BOLT M5-.8 X 15
FLAT WASHER 6MM
QUICK COUPLER
PRESSURE GAUGE
HEX BUSHING OD 1⁄4 X ID 1⁄8 MPT
REGULATOR
NIPPLE NPT 1⁄4 X 40
PRESSURE SWITCH-LF10
STEM ADAPTER 1⁄4 MPT
SAFETY VALVE 1⁄4 NB 130 PSI
BUTTON
PH3370051
PH3370052
PH3370053
PH3370054
PH3370055
PH3370056
PH3370057
PH3370060
PH3370061
PH3370062
PH3370063
PH3370064
PH3370065
PH3370066
PH3371065
PH3371066
PH3370070
PH3371068
PHTEK18
FLARE CONNECTOR ID 10MM
COPPER PIPE 6MM
POWER CORD 14# X 2M
RING TERMINAL #10
FORK TERMINAL #10
GRIP COVER 25MM
CHECK VALVE
DRAIN VALVE 14MM
CUSHION FOOT
TAP SCREW #10 X 5⁄8
FLAT WASHER 10MM
TANK TWO 2 GALLON HOT DOG
DISCHARGE PIPE (M12 X 360)
COOLER M12 X 380
LOCK NUT 3/4-16
PW04M
PH3371071
PH3370075
PH3370076
PLN05
PH3370078
PH3370079
AIR INTAKE FILTER
THERMAL OVERLOAD PROTECTOR
-22-
Model H3370/H3371Air Compressors
Download from Www.Somanuals.com. All Manuals Search And Download.
NOTES
Model H3370/H3371Air Compressors
-23-
Download from Www.Somanuals.com. All Manuals Search And Download.
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!
-24-
Model H3370/H3371Air Compressors
Download from Www.Somanuals.com. All Manuals Search And Download.
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______________________________
Download from Www.Somanuals.com. All Manuals Search And Download.
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 NAIL
Download from Www.Somanuals.com. All Manuals Search And Download.
|