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16- ENG 

A08193

NOTE:

 See "Operation" section for the location of controls.

To ensure efficient operation and longer life of the air compressor outfit, 
a routine maintenance schedule should be prepared and followed. The 
following routine maintenance schedule is geared to an outfit in a normal 
working environment operating on a daily basis. If necessary, the schedule 
should be modified to suit the conditions under which your compressor is 
used. The modifications will depend upon the hours of operation and the 
working environment. Compressor outfits in an extremely dirty and/or hostile 
environment will require a greater frequency of all maintenance checks.

Unit cycles automatically when power is on. When 

performing maintenance, you may be exposed to voltage 

sources, compressed air, or moving parts. Personal injuries can occur. 

Before performing any maintenance or repair, disconnect power source 

from the compressor and bleed off all air pressure.

To Check Safety Valve

If the safety valve does not work properly, over 

pressurization may occur, causing air tank rupture or an 

explosion. 

1.  Before starting compressor, pull the ring on the safety valve to make 

sure that the safety valve operates freely. If the valve is stuck or does not 

operate  smoothly, it must be replaced with the same type of  valve. 

To Drain Tank

1.  Set the On/Auto/Off lever to "OFF".
2.  Pull the regulator knob out and turn counter clockwise to set the outlet 

pressure to zero.

3.  Remove the air tool or accessory.
4.  Pull ring on safety valve allowing air to bleed from the tank until tank 

pressure is approximately 20 psi. Release safety valve ring.

MAINTENANCE

Customer Responsibilities

Daily or 

after each 

use

Before 
each 
use

Every 

hours

Every 
40 
hours

Every 
100 
hours

1

1- more frequent in dusty or humid conditions

Check Safety Valve
Drain Tank
Oil Leaks
Check Oil
Change Oil

Air Filter

Summary of Contents for JOB BOSS C3550

Page 1: ...nstructions before starting operations Part No A08193 0410 0 ESPA OL P GINA 27 FRAN AIS PAGE 53 To learn more about Porter Cable visit our website at http www porter cable com Copyright 2004 Porter Ca...

Page 2: ...the symbols below Please read the manual and pay attention to these symbols IMPORTANT SAFETY INSTRUCTIONS Some dust created by power sanding sawing grinding drilling and other construction activities...

Page 3: ...roperty damage To reduce the risk of fire do not allow the compressor to operate unattended Always operate the compressor in a well ventilated area free of combustible materials gasoline or solvent va...

Page 4: ...ndensed water from tank causing rust and thinning of the steel tank Modifications or attempted repairs to the tank Unauthorized modifications to the unloader valve safety valve or any other components...

Page 5: ...ect voltage and adequate fuse protection The compressed air directly from your compressor is not safe for breathing The air stream may contain carbon monoxide toxic vapors or solid particles from the...

Page 6: ...thing WARNING Risk of Falling A portable compressor can fall from a table workbench or roof causing damage to the compressor and could result in serious injury or death to the operator Always operate...

Page 7: ...parts WARNING Risk of Unsafe Operation Unsafe operation of your air compressor could lead to serious injury or death to you or others HAZARD WARNING Risk of Serious Injury or Property Damage When Tran...

Page 8: ...ds to a certain high pressure before the motor automatically shuts off protecting your air tank from pressure higher than its capacity The high pressure at which the motor shuts off is called cut out...

Page 9: ...pressor life Use air compressor oil only NOTE Use an oil specifically formulated for use in an air compressor such as Porter Cable PAS1 air compressor oil Oil may be found at the store where the air c...

Page 10: ...not use if there are signs of damage 4 If these grounding instructions are not completely understood or if in doubt as to whether the compressor is properly grounded have the installation checked by...

Page 11: ...and minimum branch circuit requirements Certain air compressors can be operated on a 15 amp circuit if the following conditions are met 1 Voltage supply through branch circuit is 15 amps 2 Circuit is...

Page 12: ...ightly higher than the pressure switch cut out setting Outlet Pressure Gauge D The outlet pressure gauge indicates the air pressure available at the outlet side of the regulator This pressure is contr...

Page 13: ...d protector will shut off the motor The motor must be allowed to cool down before restarting The compressor will automatically restart after the motor cools Air Intake Filter K This filter is designed...

Page 14: ...he On Auto Off lever to ON AUTO position The compressor will start 6 Run the compressor for 20 minutes Make sure the drain valve is open and there is minimal air pressure build up in tank 7 After 20 m...

Page 15: ...te air regulation and control closer to the work area Reduce air pressure in tank to 60 psi maximum before removing or connecting portable control panel and when connecting hose to tank quick connect...

Page 16: ...efore performing any maintenance or repair disconnect power source from the compressor and bleed off all air pressure To Check Safety Valve If the safety valve does not work properly over pressurizati...

Page 17: ...visual signs of contaminants water dirt etc Make sure air vent C in dipstick is free from debris If air vent is blocked pressure can build in crankcase causing damage to air compressor and possible pe...

Page 18: ...in plug B 5 Slowly fill crankcase with oil Crankcase capacity is 6 fluid ounces 177 4 ml Oil level should be at the full mark on the dipstick Overfilling with oil will cause premature compressor failu...

Page 19: ...ir tank and pressure switch Carefully move pressure relief tube away from check valve 5 Unscrew the check valve turn counterclockwise using a 7 8 open end wrench Note the orientation for reassembly 6...

Page 20: ...ressure is approximately 20 psi Release safety valve ring 6 Drain water from air tank by opening drain valve on bottom of tank Water will condense in the air tank If not drained water will corrode and...

Page 21: ...gs where air can be heard escaping Check fittings with soapy water solution DO NOT OVERTIGHTEN Air leaks at fittings Air leaks at pressure switch release valve if equipped Defective pressure switch re...

Page 22: ...tenance section Pressure reading on the regulated pressure gauge if equipped drops when an accessory is used It is normal for some pressure drop to occur If there is an excessive amount of pressure dr...

Page 23: ...load switch will automatically reset Tank pressure exceeds pressure switch cut in pressure Motor will start automatically when tank pressure drops below cut in pressure of pressure switch Loose electr...

Page 24: ...ll leaks it should be replaced Compressor mounting screws loose Tighten mounting screws see Parts manual for torque specifications Carbon build up in pump Have checked by a Trained Service Technician...

Page 25: ...25 ENG A08193 NOTES...

Page 26: ...purchaser Air compressors with 60 and 80 gallon tanks will be inspected at the site of installation Contact the nearest Porter Cable Authorized Warranty Service Center that provides on site service c...

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