Porter-Cable PXCMLC3706056 Instruction Manual
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Porter-Cable PXCMLC3706056 Instruction Manual

Single stage, belt drive, electric air compressor
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Single Stage, Belt Drive,
Electric Air Compressors
Compresseurs d'air
électriques à un étage à
entraînement par courroie
Compresores eléctricos de
aire, de una sola etapa y
accionamiento por correa
Instruction manual
Manuel d'instructions
Manual de instrucciones
Français : Page 31
Español: Página 60
PXCMLC3706056
200-2887_Rev. A_7-12

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Summary of Contents for Porter-Cable PXCMLC3706056

  • Page 1 Electric Air Compressors Compresseurs d’air électriques à un étage à entraînement par courroie Compresores eléctricos de aire, de una sola etapa y accionamiento por correa Instruction manual Manuel d'instructions Manual de instrucciones Français : Page 31 Español: Página 60 PXCMLC3706056 200-2887_Rev. A_7-12...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS SAFETY GUIDELINES ........3-6 Shutdown............14 SPECIFICATION CHART ........6 MAINTENANCE .......... 15-18 OVERVIEW ............. 6-7 Draining the Tank ........15 Basic Air Compressor Components ..6-7 Checking the Oil .........15 ASSEMBLY ............7 Changing the Oil .........15 Assembling the Compressor ......7 Belt Tension ..........16 TYPICAL INSTALLATION ........

  • Page 3: Safety Guidelines

    SAFETY GUIDELINES The following information relates to protecting YOUR SAFETY and PREVENTING EQUIPMENT PROBLEMS. To help you recognize this information, we use the following symbols. Please read the manual and pay attention to these sections. Indicates an imminently hazardous situation which, if not DANGER avoided, will result in death or serious injury.
  • Page 4 WARNING Read and understand all safety precautions in this manual before operating. Failure to comply with instructions in this manual could result in personal injury, property damage, and/or voiding of your warranty. The manufacturer WILL NOT be liable for any damage because of failure to follow these instructions.
  • Page 5 immediately with a new air tank or replace cause cancer, and birth defects or other reproductive harm. Wash hands after the entire compressor. handling. 12. RISK TO HEARING. Always NOTE: ELECTRICAL WIRING. Refer to wear hearing protection when using an air compressor. Failure the air compressor’s serial label for the to do so may result in hearing loss.

  • Page 6: Specification Chart

    KICK-OUT MODEL NO. H.P. GALLONS PHASE PRESSURE PRESSURE 60 (227, PXCMLC3706056 240/15/1 (7,24 bar) (9,31 bar) BASIC AIR COMPRESSOR COMPONENTS Fig. 1 The basic components of the air compressor are the electric motor, pump, pressure switch and tank (see Fig. 1). The tank may be vertical or horizontal, varying in size and capacity.

  • Page 7: Assembly

    air is used and the pressure level in the tank drops to the kick–in pressure, the pressure switch restarts the motor automatically, without warning and the pump resumes compressing air. The air line outlet (see E). Connect 1/4” NPT air hose to this outlet. ASSEMBLING THE COMPRESSOR Unpack the air compressor.

  • Page 8: Typical Installation

    TYPICAL INSTALLATION 8- ENG...
  • Page 9 TYPICAL INSTALLATION AIR DRYERS AND AFTER COOLERS An air dryer or aftercooler is installed directly in the air line. MOISTURE REMOVAL AND AIR FILTRATION As the air cools, moisture will condense in the lines. This moisture must be removed before it reaches the tool being used. To remove this moisture, run the main air line downhill to a moisture trap and drain.

  • Page 10: Compressor Controls

    COMPRESSOR CONTROLS Refer to Fig. 3. PRESSURE switch (see A) This switch turns on the compressor. It is operated manually, but when in the AUTO position, it allows the compressor to start up or shut down automatically, without warning, upon air demand. ALWAYS set this switch to OFF when the compressor is not being used, and before unplugging the compressor.

  • Page 11: Electrical Power Requirements

    ELECTRICAL POWER REQUIREMENTS WARNING Risk of electrical shock. Improper electrical grounding can result in electrical shock. The wiring should be done by a qualified electrician. ELECTRICAL WIRING Refer to the air compressor’s serial label for the unit’s voltage and amperage requirements.

  • Page 12: Motor Reset Switch

    MOTOR RESET SWITCH AND WIRING WARNING Ensure that all guards and shrouds are in place before pressing the reset switch to restart the motor. If the motor shuts down because of overload, wait 10–15 minutes so the motor can cool down, then press (NEVER force) the reset switch (see A) to restart the motor (see Fig.
  • Page 13 Fig. 6 OPEN CLOSE 13 - ENG...

  • Page 14: Daily Startup

    OPERATING INSTRUCTIONS DAILY START-UP (Fig. 6) Check the oil level in the pump (see “Checking the Oil” in the maintenance section). Make sure the main power disconnect switch is shut OFF. Close the tank petcock (see E). Turn ON the main power disconnect switch. Turn the pressure switch to the AUTO position (see D).

  • Page 15: Maintenance

    MAINTENANCE MAINTENANCE To avoid personal injury, always shut off and unplug the WARNING compressor and relieve all air pressure from the system before performing any service on the air compressor. Regular maintenance will ensure trouble–free operation. Your electric powered air compressor represents high–quality engineering and construction; however, even high–quality machinery requires periodic maintenance.

  • Page 16: Belt Tension And Pulley Alignment

    MAINTENANCE BELT TENSION AND PULLEY ALIGNMENT WARNING To avoid personal injury, always shut off and unplug the compressor and relieve all air pressure from the system before performing any service on the air compressor. NOTE: Drive belt tensioning and pulley alignment are done at the same time. They are discussed separately for clarity.

  • Page 17: Pulley Alignment

    MAINTENANCE PULLEY ALIGNMENT To check pulley alignment, remove the belt guard and place a straightedge (see A) against the pump flywheel (see B) (See Fig. 9). Measure and record the distance from the straightedge to the edge of the drive belt at point C. Then measure the distance from the straightedge to the edge of the drive belt again at points D and E.

  • Page 18: Cleaning The Air Filter

    MAINTENANCE CLEANING THE AIR FILTER A dirty air filter will reduce the compressor’s performance and life. To avoid any internal contamination of the pump, the filter should be cleaned frequently, and replaced on a regular basis. Felt filters should be cleaned in warm, soapy water, rinsed, and allowed to air dry before reinstallation.

  • Page 19: Troubleshooting Chart

    TROUBLESHOOTING Note: Troubleshooting problems may have similar causes and solutions. PROBLEM POSSIBLE CAUSE SOLUTION Excessive current Low voltage/motor Check that power supply is adequate and draw trips circuit overload that compressor is on breaker of motor reset a dedicated circuit. If switch using extension cord, try using without.
  • Page 20 TROUBLESHOOTING PROBLEM POSSIBLE CAUSE SOLUTION Oil in discharge air Worn piston rings or Contact authorized cylinder service center. Restricted air intake Clean or replace the air filter element(s). Oil level too high Reduce to proper level. Overheating Poor ventilation Relocate compressor to an area with cool, dry, well circulated air, at least 12 in.

  • Page 21: Parts Drawings And Parts Lists

    PARTS DRAWING Notes: Torque to 17-24 lb-in. Torque to 125-150 lb-in. PARTS LIST Item Part No Description 032-0025 Gauge, 300# 1/4” bottom connect 034-0226 Switch, pressure includes items 3-4 & 7 071-0033 Strain relief 061-0216 Screw 136-0005 Valve, ASME Plug, 1/4” 136-0090 Valve, bleeder *N/A - These are standard parts available at your local hardware store.
  • Page 22 PARTS DRAWING Note: Torque to 85-90 lb-in. Note: Tighten compression nut handtight plus 1 full turn. 22- ENG...
  • Page 23 PARTS LIST Item Part No Description 125-0151 Beltguard (outer) 061-0114 Plastite screw Bolt, 5/16-18 x 1/2 125-0152 Beltguard (inner) Setscrew 146-0016 007-0037 V-Belt, 4L-530 006-0108 Pulley 026-0188 Cord, interconnect Bolt, 5/16-18 x .50 021-0242 Tank assembly (includes items 11A-13) 512-0041 Bushing, 2”...
  • Page 24 PARTS DRAWING Notes: 755H Pump Torque to 25-27 lb-ft. Assembly Torque to 14-16 lb-ft. Torque to 9-12 lb-ft. Torque to 8 lb-ft. Torque to 5 lb-ft. 24- ENG...
  • Page 25 PARTS LIST Item Part No Description Screw, M4 x 8 Lock washer, M4 042-0112 Inlet cover 118-0032 Screen 019-0220 Filter, felt Screw, M8x60 Lock washer, M8 042-0108 Head assembly Screw, M8x35 046-0283 Gasket, head 043-0180 Valve plate assy (includes items 10 & 12) 046-0282 Gasket, cylinder Screw, M8x20...

  • Page 26: Warranty

    1 Year – Limited warranty on all other air compressor components. This warranty is not transferable to subsequent owners. Porter-Cable will repair or replace, without charge, at Porter-Cable’s option, any defects due to faulty materials or workmanship. For further detail of warranty coverage and warranty repair information, call 1-(888)-895-4549 or visit por- tercable.com.
  • Page 27 check valves, pressure switches, air unloaders, throttle controls, electric motors, brushes, regulators, o-rings, pressure gauges, tubing, piping, fittings, fasteners, wheels, quick couplers, gaskets, seals, air filter housings, piston rings, connecting rods, and piston seals. • Labor, service calls, and travel charges, are not covered after the first year of ownership on stationary compressors (compressors without handles, or wheels).
  • Page 28 MERCHANTABILITY AND FITNESS FOR PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. LIABILITY FOR CONSEQUENTIAL AND INCIDENTAL DAMAGES UNDER ANY AND ALL WARRANTIES, OTHER CONTRACTS, NEGLEGENCE, OR OTHER TORTS IS EXCLUDED TO THE EXTENT EXCLUSION IS PERMITTED BY LAW. FREE WARNING LABEL REPLACEMENT: If your warning labels become illeg- ible or are missing, call 1-(888)-895-4549 for a free replacement.

  • Page 29: Glossary Of Terms

    GLOSSARY OF TERMS Cubic feet per minute; a unit of measure of air flow. Pounds per square inch; a unit of measure of air pressure. Kick-in pressure Factory set low pressure point that starts the compressor to repressurize the tank to a higher pressure. Kick-out pressure Factory set high pressure point that stops the compressor from increasing the pressure in the tank above a certain level.

  • Page 30: Parts And Service

    PARTS AND SERVICE Replacement parts and service are available from your nearest authorized Service Center. If the need arises, contact Product Service as listed at right. When consulting with a Service Center or Product Service, refer to the model number and serial number located on the serial label of the compressor.

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