(66-750) PART NO. D26269 Rev. 0 Copyright © 2002 Delta Machinery To learn more about DELTA MACHINERY visit our website at: www.deltamachinery.com. For Parts, Service, Warranty or other Assistance, please call 1-866-422-4286.
SAFETY GUIDELINES - DEFINITIONS This manual contains information that is important for you to know and understand. This information relates to protecting YOUR SAFETY and PREVENTING EQUIPMENT PROBLEMS. To help you recognize this information, we use the symbols below. Please read the manual and pay attention to these symbols. Indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.
IMPORTANT SAFETY INSTRUCTIONS Save these instructions Improper operation or maintenance of this product could result in serious injury and property damage. Read and understand all warnings and operation instructions before using this equipment. HAZARD WARNING: Risk of explosion or fire What Could Happen How To Prevent It It is normal for electrical contacts within the motor and pressure switch to spark.
HAZARD WARNING: Risk of Bursting Air Tank: The following conditions could lead to a weakening of the tank, and result in a violent tank explosion and could cause property damage or serious injury. What Could Happen How To Prevent It Drain tank daily or after each use. If tank develops a leak, replace it immediately with a new tank or replace the entire compressor. 1. Failure to properly drain condensed water from tank, causing rust and thinning of the steel tank. 2.
HAZARD WARNING: Risk of Electrical Shock WHAT CAN HAPPEN HOW TO PREVENT IT Your air compressor is powered by electricity. Like any other electrically powered device, If it is not used properly it may cause electric shock. Never operate the compressor outdoors when it is raining or in wet conditions. Never operate compressor with protective covers removed or damaged. Repairs attempted by unqualified personnel can result in serious injury or death by electrocution.
HAZARD WARNING: RISK OF BURNS WHAT CAN HAPPEN HOW TO PREVENT IT Touching exposed metal such as the compressor head or outlet tubes, can result in serious burns. Never touch any exposed metal parts on compressor during or immediately after operation. Compressor will remain hot for several minutes after operation. Do not reach around protective shrouds or attempt maintenance until unit has been allowed to cool.
HAZARD WARNING: RISK OF SERIOUS INJURY OR PROPERTY DAMAGE WHEN TRANSPORTING COMPRESSOR (Fire, Inhalation, Damage to Vehicle Surfaces) WHAT CAN HAPPEN HOW TO PREVENT IT Oil can leak or spill and could result in fire or breathing hazard; serious injury or death can result. oil leaks will damage carpet, paint or other surfaces in vehicles or trailers. Always place COMPRESSOR on a protective mat when transporting to protect against damage to vehicle from leaks.
GLOSSARY Become familiar with these terms before operating the unit. CFM: Cubic feet per minute. SCFM: Standard cubic feet per minute; a unit of measure of air delivery. PSIG: Pounds per square inch gauge; a unit of measure of pressure. Code Certification: Products that bear one or more of the following marks: UL, CUL, ETL, CETL, have been evaluated by OSHA certified independent safety laboratories and meet the applicable Underwriters Laboratories Standards for Safety.
ASSEMBLY Tools Required for Assembly 1 - 9/16" socket or open end wrench 1 - electric drill Unpacking 1. Remove all packaging. It may be necessary to brace or support one side of the outfit when removing the pallet because the air compressor will have a tendency to tip. 2. Remove and discard the (4) screws and washers holding the compressor to the pallet. 3. With the help of another person carefully remove air compressor from pallet and place on a level surface.
INSTALLATION HOW TO SET UP YOUR UNIT Location of the Air Compressor • • • • Locate the air compressor in a clean, dry, and well ventilated area. Locate the air compressor at least 12" away from the wall or other obstructions that will interfere with the flow of air. Locate the air compressor as close to the main power supply as possible to avoid using long lengths of electrical wiring. NOTE: Long lengths of electrical wiring could cause power loss to the motor.
Wiring Instructions RISK OF ELECTRICAL SHOCK. Improper electrical grounding can result in electrical shock. The wiring should be done by a qualified electrician to comply with national and local electrical codes. A qualified electrician needs to knows the following before wiring: 1. The amperage rating of the electrical box should be adequate. Refer to the product specifications, found in the front of this manual, for this information. 2.
● Use pipe that is the same size as the air tank outlet. Piping that is too small will restrict the flow of air. ● If piping is over 100 feet long, use the next larger size. ● Bury underground lines below the frost line and avoid pockets where condensation can gather and freeze. Apply pressure before underground lines are covered to make sure all pipe joints are free of leaks.
OPERATION Know Your Air Compressor READ THIS OWNER’S MANUAL AND SAFETY RULES BEFORE OPERATING YOUR UNIT. Compare the illustrations with your unit to familiarize yourself with the location of various controls and adjustments. Save this manual for future reference. Description of Operation Become familiar with these controls before operating the unit. On/Auto/Off Switch: Turn this switch ON to provide automatic power to the pressure switch and OFF to remove power at the end of each use.
Check Valve: When the air compressor is operating, the check valve is "open", allowing compressed air to enter the air tank. When the air compressor reaches "cut-out" pressure, the check valve "closes", allowing air pressure to remain inside the air tank.
2. Recheck all wiring. Make sure wires are secure at all terminals connections. Make sure all contacts move freely and are not obstructed. 3. Open the globe valve fully to permit air to escape and prevent air pressure build up in the air tank during the break-in period. 4. Move the On/Auto/Off lever to "ON/AUTO" position. The compressor will start. 5. Run the compressor for 20 minutes. Make sure the globe valve is open and there is minimal air pressure build-up in tank. 6.
MAINTENANCE Customer Responsibilities Before each use Check Safety Valve Daily or Every Every after 40 8 each hours hours use ● ● Drain Tank Every Every Yearly 100 160 hours hours Oil Leaks Check Oil Change Oil ● ● ● ● Unusual Noise and/or Vibration ●1 ● Air Filter Drive Belt -Condition Motor Pulley/Flywheel alignment ● Air compressor pump intake and exhaust valves ● Inspect air lines and fittings ● for leaks 1- more frequent in dusty or humid conditions Unit cycles automatically when power i
To Drain Tank 1. Set the On/Auto/Off lever to “OFF”. 2. Close the globe valve. 3. Remove the air tool or accessory. 4. Open the globe valve and allow the air to slowly bleed from the air tank until tank pressure is approximately 20 psi. 5. Close the globe valve. 6. Drain water from air tank by opening drain valve (counter-clockwise) on bottom of tank. Water will condense in the air tank. If not drained, water will corrode and weaken the air tank causing a risk of air tank rupture. 7.
Air Filter - Inspection and Replacement Hot surfaces. Risk of burn. Compressor heads are exposed when filter cover is removed. Allow compressor to cool prior to servicing. Keep the air filter clean at all times. Do not operate the air compressor with the air filter removed. A dirty air filter will not allow the compressor pump to operate at full capacity. Before using the compressor pump, check the air filter to make sure it is clean and in place. If it is dirty, replace it with a new filter. 1.
7. Visually inspect the motor drive pulley to verify that it is perpendicular to the drive motor shaft. Points B1 and B2 of Figure should appear to be equal. If they are not, loosen the set screw of the motor drive pulley and equalize B1 and B2, using care not to disturb the belt alignment performed in step 2. 8. Retighten the motor drive pulley set screw to 70-80 in.-lbs. 9. Reinstall belt guard.
To Replace or Clean Check Valve 1. 2. 3. 4. 5. 6. Release all air pressure from air tank. See "To Drain Tank" in the Maintenance section. Unplug unit. Outlet Tube Using an adjustable wrench loosen outlet tube nut at air tank and pump. Carefully move outlet tube away from Pressure Relief Tube check valve. Using an adjustable wrench loosen pressure relief tube nut at air tank and pressure switch. Carefully move Nuts pressure relief tube away from check valve.
To Replace Belt Serious injury or damage may occur if parts of the body or loose items get caught in moving parts. Never operate the unit with the belt guard removed. The belt guard should be removed only when the compresor is unplugged. 1. Place the ON/AUTO-OFF lever in the OFF position. 2. Unplug compressor. 3. Remove the front of the belt guard by disengaging the snaps. Insert a flat bladed screwdriver at each snap location and pry the beltguard apart. 4.
TROUBLESHOOTING Performing repairs may expose voltage sources, moving parts or compressed air sources, moving parts or compressd air sources. Personal injury may occur. Prior to attempting any repairs, unplug the air compressor and bleed off all air tank air pressure. PROBLEM Excessive tank pressure safety valve pops off. CAUSE Pressure switch does not shut off motor when compressor reaches "cutout" pressure. Pressure switch "cut-out" too high.
CORRECTION CAUSE PROBLEM Pressure reading It is normal for "some" on the regulated pressure drop to occur. pressure gauge (if equipped) drops when an accessory is used. If there is an excessive amount of pressure drop when the accessory is used, adjust the regulator as instructed in the Operation section. NOTE: Adjust the regulated pressure under flow conditions (while accesory is being used). Air leak from safety valve. Possible defect in safety valve.
PROBLEM Motor will not run. CORRECTION CAUSE Motor overload protection switch has tripped. The motor must be allowed to cool down before restarting. To restart, see Motor Overload Protector paragraph in the Operation section. Tank pressure exceeds pressure switch "cut-in" pressure. Motor will start automatically when tank pressure drops below "cut-in" pressure of pressure switch. Check valve stuck open. Remove and clean, or replace. Loose electrical connections.
PROBLEM CORRECTION CAUSE Knocking Noise. Possible defect in safety valve. Excessive belt wear Squealing sound. Operate safety valve manually by pulling on ring. If valve still leaks, it should be replaced. Defective check valve. Remove and clean, or replace. Loose pulley. Tighten pulley set screw, 145-165 in.-lbs. Loose flywheel. Tighten flywheel screw, 33-37 ft.-lbs. Compressor mounting screws loose. Tighten mounting screws, 20-25 ft.-lbs. Loose belt.
AIR COMPRESSOR DIAGRAM Torque 10-15 ft.-lbs. 41 29 36 Torque 30 70-80 in.-lbs. 31 32 For customer wiring 9 8 3 6 5 7 11 16 12 Torque 50-60 in.-lbs.
PARTS LIST KEY NO. PART NO.
PUMP DIAGRAM D26269 28-ENG
PARTS LIST KEY NO. * * * * ● ● ● + + + 1 * 2 3 4 * 5 6 * 7 8 9 10 11 12 13 14 15 16 17 18 20 21 22 23 24 25 26 27 28 31 32 33 34 35 36 37 38 Kits + * ● PART NO. DESCRIPTION Z-AC-0205 Crankcase 265-16-1 Base Gasket DAC-276 Base SSF-925 Screw 1/4-20 x 7/8 (8 used) (Torque 9 to 12 ft.-lbs.) 265-6 Vent Filter (2 used) 265-18 Filter Plate 265-17 Felt Filter SSF-955 Screw (5 used) (Torque 25 to 30 ft.-lbs.) SSF-935 Screw (2 used) SSF-6627 Shoulder Stud 3/8-16 (Torque 25 to 30 ft.-lbs.
LIMITED WARRANTY DELTA CORPORATION warrants to the original purchaser that all products covered under this warranty are free from defects in material and workmanship. Products covered under this warranty include air compressors, air tools, service parts, pressure washers, and generators, which have the following warranty periods: 3 YEARS - Limited warranty on 2-stage oil-free air compressor pumps that operate at 1725 RPM. 2 YEARS - Limited warranty on oil-lubricated air compressor pumps.