1.KEEP ALL SAFETY DEVICES IN PLACE and in working order.

2.REMOVE ADJUSTING KEYS AND WRENCHES. Form a habit of checking to see that keys and adjusting wrenches are removed from tool before operation.

3.KEEP WORK AREA CLEAN. Cluttered areas and benches invite accidents.

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.

5.KEEP CHILDREN AND VISITORS AWAY. All children and visitors should be kept at a safe distance from work area.

6.MAKE WORKSHOP CHILD PROOF with padlocks, master switches, or by removing air hoses from tools.

7.DO NOT FORCE TOOL. It will do the job better and safer at the rate for which it was designed.

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.

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.

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.

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.

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.

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.

19.USE THE RECOMMENDED ACCESSORIES. Consult the owner???s manual for recommended accessories. The use of improper accessories may cause risk of injury.

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.

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.

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.

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.

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

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.

12.NEVER LOAD YOUR COMPRES-

SOR PAST THE MAXIMUM PSI RATING OF 115 PSI.

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.

Commentary

We are proud to offer the Grizzly Model H3372 3 HP Air Compressor. This model is 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 commit- ment to customer satisfaction.

The Model H3372 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 H3372 compressor fills its 11 gallon tank from 0 to 115 PSI in a little over a minute!

We are pleased to provide this manual with the Model H3372. 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 H3372 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.

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 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.

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

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.

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.

The Model H3372 represents a heavy load at 142 pounds. Seek assistance before moving.

Long term exposure to this machine may cause hearing loss. Wear approved hearing protection while operating this machine to minimize this risk!

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.

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.

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.

Wiring:

The Model H3372 3 HP Air Compressor is wired for 220V operation.

Amperage Draw

The Model H3372 has a 3 HP motor and draws the following amperage.

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.

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.

Figure 1. Ground plug configuration.

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.

Overheating, short circuit and fire damage will result form inadequate wiring. Follow the guidelines in this section.

Potential for electrical shock haz- ard, this equipment must be grounded. Verify that any existing electrical outlet and circuit you use is actually grounded.

Before using your Grizzly Air Compressor, follow these steps :

1.Remove all packing materials and any protective plastic bags, zip-tie labels or tags from the compressor cylinder head or oil plug.

2.Be sure the air filter is attached to the cylinder head as shown in Figure 2.

Figure 2. Air filter attached to cylinder head.

3.ADD OIL TO THE CRANKCASE. Oil has been supplied with your air com- pressor. The oil level should be in the center of the sight gauge shown in

Figure 3.

Figure 3. Proper oil level.

4.Make sure the drain valve under the air tank is closed.

NOTICE

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.

Duty Cycle

The Model H3372 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.

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.

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.

Figure 6. Pressure gauges.

To control the air delivery to your tool:

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 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 this pre- ferred level. Understand the duty cycle of the air compressor that is described on page 7.

H3372 3 HP Air Compressor

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.

To manually release the air in the tank by using the safety drain valve:

1.Locate the safety drain valve on the tank. The drain valve is shown below in Figure 8.

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 of 130 PSI. DO NOT try to adjust the safety valve!

-9-

Tank Pressure

Regulator

The pressure regulator has been factory set for the highest quality operating perfor- mance.

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.

NOTICE

The Model H3372 3 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.

To adjust the pressure regulator:

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 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.

5.Turn the pressure adjustment bolt (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 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.

To connect air tools to your air com- pressor:

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.

This accessory and many like it can be found in the Grizzly Catalog.

Figure 10. 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.

H3372 3 HP Air Compressor

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.

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 H3372 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.

-11-

Before Each Use

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.

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.

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.

3. Clean off cylinder head cooling fins of any dirt which might hamper air flow.

4.Check for worn or damaged cords 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.

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.

Changing V-belt

To change the V-belt drive on your air compressor:

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.

Figure 11. 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 12. Mounting bolt locations.

3.Remove the V-belt from the motor pul- ley and fly pulley.

4.Install the new V-belt.

5.Reposition the motor in its original place so the belt is tensioned, and secure the four mounting bolts loos- ened in step 2.

6.A properly tensioned V-belt will have

about a 1???2 inch deflection as shown in Figure 13. Replace the belt guard.

7.Replace belt gaurd.

1???2 Inch of Deflection

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.

After First 50

Hours Of Use

After the first 50 working hours or 30 days, whichever comes first, perform the following maintenance:

???Replace the oil in the motor with com- pressor oil (use ISO 100 of SAE 30W viscosity, non detergent type).

???Make sure that all the fittings are tight.

???Remove the air filter foam element shown in Figure 14 and rinse it out with water. Allow it to dry and re- install.

Figure 14. Air filter foam element

???Blow out any accumulated dirt between the cylinder cooling fins.

Weekly

If the compressor is used on a daily basis, perform the following checks each week:

???Rinse the air filter foam element in water.

???Check for loose bolts or fittings.

The Model H3372 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.

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.

After every 300 hours or 3 months of regular operation, perform the following maintenance items:

???Change the compressor motor oil. Use compressor oil or a non-deter- gent 30 weight oil.

???Rinse the air filter foam element in water.

???Check for air leaks and correct as needed.

???Clean the cylinder head fins for prop- er cooling.

???Check for loose bolts or fittings.

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.

When storing your air compressor fol- low these guidelines:

1.Set the ON/OFF button to OFF.

2.Turn the regulator counter-clockwise to set the delivery pressure to zero.

3.Disconnect air tools or accessories.

4.Pull the safety drain valve ring to bleed excess pressure from tank. The pressure gauge for the tank should read 15-20 PSI.

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 water has been released.

7.Store the air compressor in its normal operating position in a cool protected area.

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.

47

48

36

35

37

49

38

18

19

51

50

94

76

20

23

22

21

77

90

78

3

5

47

93

79

6

2

11

1

69

9

39

68

67

91

63

64

71

89

940

12 13 14

61 59

60

16

52

57

55

5856

54

53

70

85

87

86

95

96

___Other__________________________

2.What is your annual household income?

___$20,000-$29,999 ___$60,000-$69,999

6.What stationary woodworking tools do you own? Check all that apply.

___Horiz.Boring Machine

___Vacuum Veneer Press

___Other______________________________

7.How many of your woodworking machines are Grizzly? _____________

8.Which benchtop tools do you own? Check all that apply.

___Spindle/Belt Sander ___Mini Jointer

___10"-12"Thickness Planer

___Other______________________________

9.How many of the machines checked above are Grizzly? ____________

10.Which portable/hand held power tools do you own? Check all that apply.

___Other_________________________________

11.What machines/supplies would you like Grizzly Industrial to carry?

________________________________________

________________________________________

________________________________________

________________________________________

12.What new accessories would you like Grizzly Industrial to carry?

________________________________________

________________________________________

________________________________________

________________________________________

13.What other companies do you purchase your tools and supplies from?

_________________________________________

_________________________________________

_________________________________________

14.Do you think your purchase represents good value?

___Yes ___No

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.

___Yes ___No

17.Comments:________________________________

_________________________________________

_________________________________________

_________________________________________