AIR COMPRESSOR MODEL G0471 INSTRUCTION MANUAL COPYRIGHT © JULY, 2005 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.
Table of Contents INTRODUCTION .....................................................................................2 Foreword ...........................................................................................2 Machine Data ....................................................................................2 Contact Info.......................................................................................2 SECTION 1: SAFETY ..........................................................................
INTRODUCTION Foreword Contact Info We are proud to offer the Model G0471 3 HP Air Compressor. 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. If you have any comments regarding this manual, please write to us at the following address: It is our pleasure to provide this manual with your air compressor.
SECTION 1: SAFETY For Your Own Safety Read Instruction Manual Before Operating This Equipment The purpose of safety symbols is to attract your attention to possible hazardous conditions. This manual uses a series of symbols and signal words which are intended to convey the level of importance of the safety messages. The progression of symbols is described below. Remember that safety messages by themselves do not eliminate danger and are not a substitute for proper accident prevention measures.
7. KEEP CHILDREN AND VISITORS AWAY. Keep all children and visitors a safe distance from the work area. 8. MAKE WORKSHOP CHILD PROOF. Use padlocks, master switches, and remove start switch keys. Shut off air supply before leaving shop. 9. NEVER LEAVE UNATTENDED TOOL CONNECTED TO AIR. DO NOT leave before relieving the tool of air pressure and disconnecting it from the air hose. 10. DO NOT USE IN DANGEROUS ENVIRONMENTS. DO NOT use in damp, wet locations, or where flammable or noxious fumes may exist. 11.
Additional Safety Instructions for Air Compressors 1. AIR NOZZLE. Never aim an air nozzle directly at yourself or others. Compressed air can break the skin, or enter the bloodstream through soft tissue or a cut, and cause a stroke or death. 6. COMPRESSED AIR USE. Do not use the compressor for filling breathing or diving tanks. Compressed air from this compressor cannot be used for pharmaceutical, food or health applications. 2. AIR COMPRESSOR STORAGE. DO NOT store the compressor while plugged into power.
SECTION 2: CIRCUIT REQUIREMENTS 220V Operation Plug/Receptacle Type Plug Type ............. NEMA 6-20 (Figure 1) Serious personal injury could occur if you connect the machine to the power source before you have completed the set up process. DO NOT connect the machine to the power source until instructed to do so. Amperage Draw The 3 HP motor on the Model G0471 will draw the following amps: Figure 1. Typical NEMA 6-20 plug and receptacle. G0471 Motor Draw ......................
Grounding Extension Cords In the event of an electrical short, grounding reduces the risk of electric shock. The grounding wire in the power cord must be properly connected to the grounding prong on the plug; likewise, the outlet must be properly installed and grounded. All electrical connections must be made in accordance with local codes and ordinances. We do not recommend the use of extension cords on 220V equipment.
SECTION 3: SET UP Set Up Safety This machine presents serious injury hazards to untrained users. Read through this entire manual to become familiar with the controls and operations before starting the machine! Unpacking Your air compressor left our warehouse in a carefully packed crate or box. If you discover the air compressor is damaged after you have signed for delivery, please immediately call Customer Service at (570) 5469663 for advice.
Inventory Assembly After you have unpacked the carton you should find the following. Model G0471 Inventory (Figure 2) A. Compressor.........................................1 B. Wheels ................................................2 C. Handle .................................................1 D. Air Filter ...............................................1 Hardware (Not shown) • Axle Bolts M10-1.5 x 50 ......................2 • Lock Washers 10mm ..........................2 • Hex Nuts M10-1.5 ..............
5. Slide the handle into the sockets on the tank and secure with M8-1.25 x 45 hex bolts, flat washers, lock washers, and hex nuts as shown in Figure 5. 6. Remove the oil breather (inset in Figure 6) on top of the crankcase and add compressor oil, or ISO 100/SAE 30W non-detergent oil, to the crankcase. The oil level should be in the center of the sight glass as shown in Figure 6. Oil Breather Figure 5. Air compressor handle. NOTICE Never run this compressor without a full oil reservoir.
Placement When determining where to set up the air compressor in the shop or when taking the air compressor to a job site, an important consideration is access to an adequate and properly fused power supply. Refer to SECTION 2: CIRCUIT REQUIREMENTS for the needs of your particular compressor. Place the compressor on a solid and level surface. Make sure that the hoses attached to your pneumatic device are unrestricted in movement and not subject to being run over by vehicles or punctured by sharp objects.
SECTION 4: OPERATIONS Operation Safety Starting To start the air compressor: 1. Place the compressor on a solid, level surface with access to a properly fused power supply. DO NOT operate the compressor in an environment where there are explosive, flammable, or caustic fumes or gases. Long term exposure to this machine may cause hearing loss. To protect your hearing, always wear ANSI approved ear protection when operating this air compressor. 2.
6. Close the drain valve (Figure 8) to allow the tank to build up pressure. Line Pressure Regulation The air tool that you attach to the air compressor should have a preferred PSI operating level. Set the pressure to be delivered according to the pressure required by the tool. To control the air supply to your tool: Figure 8. Drain valve. 7. Check the tank pressure gauge (Figure 9) to see that the tank pressure climbs to approximately 110-120 PSI (around 8 BAR) and turns OFF. 1.
Connecting Tools 3. Connect an air line with a 1⁄4" NPT plug to the quick-connect coupler on the air compressor shown in Figure 11. When choosing air tools, consider the amount of air used (cubic feet per minute or CFM) by the tool. Nailers and staple guns have a low CFM requirement because they use air in short bursts. A paint sprayer or a pneumatic grinder uses a more continuous stream of air requiring a high CFM.
Storage When storing your air compressor, follow these guidelines: 1. Turn the compressor switch lever to OFF. Failure to unplug the air compressor before storage may result in the compressor running continuously, causing overheating, damage to the compressor, and possibly a fire. 2. Unplug the compressor. 3. Turn the regulator counterclockwise to set the line pressure to zero. 4. Run the air tool to relieve the air pressure in the hose, then remove the air hose and the tool.
SECTION 5: MAINTENANCE Schedule If the compressor is used on a daily basis, perform the following checks each week. Weekly 1. Blow dirt and dust off of the air filter (Figure 12), then re-install. Operating this equipment has the potential to cause eye injury and hearing loss. Always wear eye and ear protection when operating an air compressor. Be certain the safety protection you wear meets the appropriate standards of the American National Standards Institute (ANSI).
Monthly After the first 50 working hours or 30 days, perform the following maintenance: 1. Change the oil in the air compressor pump as described in Changing Oil on Page 21. Pressure Safety Valve Quarterly The pressure safety valve prevents damage to the tank by releasing pressure when the tank reaches maximum capacity. After every 300 working hours or 3 months, perform the following maintenance: To check the pressure safety valve: 1.
Maintenance Notes Date -18- This page is for tracking oil changes and other maintenance procedures to ensure that they are performed at the scheduled intervals.
SECTION 6: SERVICE This section is provided for your convenience—it is not a substitute for the Grizzly Service Department. If you need help troubleshooting, replacing parts, or you are unsure of how to perform the procedures in this section, then feel free to call our Technical Support at (570) 546-9663. Troubleshooting Symptom Possible Cause Possible Solution Motor will not start. 1. Tank already pressurized. 1. Motor will not start if tank is fully pressurized. 2. Wait for motor to cool. 2.
Symptom Possible Cause Possible Solution Loud repetitious noise coming from air compressor. 1. Pulley setscrews or keys are missing or loose. 1. Inspect keys and setscrews. Replace or tighten if necessary. 2. Adjust fan cover mounting position, tighten fan, or shim fan cover. 2. Motor fan is hitting the cover. Low pressure at the tool. 1. Pressure regulator. 2. Air leaks in hoses. 3. Pressure gauge bad. 4. Pressure switch turns the motor OFF too soon.
Symptom Possible Cause Possible Solution Air leaks from pressure switch. 1. Faulty check valve. 1. Repair the check valve (see Page 22). 2. Replace pressure switch. 2. Faulty pressure switch. Air is dirty or has excessive moisture. 1. Tank is not drained. 2. Delivery pipes are dirty. Changing Oil Change the oil in the air compressor pump after the initial 50 hours, or 30 days of use; and every 300 hours, or 3 months after the first oil change.
Check Valve Fixing Air Leaks The diaphragm and O-ring in the check valve can become damaged, twisted, or dirty and cause the check valve or pressure switch to leak air. Air leaks will cause low air output and increase the time the compressor must run. To find air leaks: To fix the check valve: 1. Unplug the air compressor and drain all the air from the tank. 1. Turn the compressor OFF when the tank is fully pressurized and unplug the compressor. 2.
Pressure Switch The pressure switch has been factory set for the highest PSI that is safe for this compressor. The pressure switch ensures the compressor will shut OFF when the air tank reaches maximum PSI. 5. Turn the black plastic pressure adjustment screw (Figure 20) a half turn clockwise to increase the maximum tank pressure and a half turn counterclockwise to decrease the pressure.
Changing V-Belt 3. Remove the V-belt from the motor pulley and fly pulley. 4. Install the new V-belt. To change the V-belt drive on your air compressor: 1. Remove the belt guard. The guard is attached to the compressor frame by the mounting bolts shown in Figure 21. 5. Reposition the motor to tension the belt and secure the mounting bolts loosened in step 2. Note: A properly tensioned V-belt will have about a ½" deflection as shown in Figure 23. ½" of Deflection Figure 21. Belt guard mounting bolts. 2.
Service Notes Model G0471 3 HP Air Compressor -25-
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G0471 Parts List REF PART # DESCRIPTION REF PART # DESCRIPTION 1 2 3 4 5 6 7 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 41 42 43 44 45 46 47 48 49 50 51 52 CRANKSHAFT BALL BEARING 6205 CONNECTING ROD POSITION PIN CAP SCREW M8-1.25 X 40 LOWER CRANKCASE GASKET O-RING CRANKCASE FRONT COVER GASKET FRONT COVER OIL SEAL BACK COVER LOCK WASHER 6MM HEX BOLT M6-1 X 20 OIL SIGHT SEAL OIL SIGHT CAP SCREW M8-1.
WARRANTY AND RETURNS Grizzly Industrial, Inc. warrants every product it sells for a period of 1 year to the original purchaser from the date of purchase. This warranty does not apply to defects due directly or indirectly to misuse, abuse, negligence, accidents, repairs or alterations or lack of maintenance.
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