Craftsman 2 Gallon Air Compressor Owners Manual

Owner’s Manual
AIR COMPRESSOR
2-gallon
1HP
Oil Lubricated
Model No. 921.153120
®
CAUTION: 
Before using this product, 
read this manual and follow 
all its Safety Rules and 
Operating Instructions. •  Safety Instructions
•  Installation & Operation
•  Maintenance & Storage
•  Troubleshooting Guide
•  Parts List
•  Español,  p. 10
Sears, Roebuck and Co., Hoffman Estates, IL 60179 U.S.A.
www.sears.com
08/11/2006
Part No. E102346 

Table of Contents
   Page
Warranty
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Below
Safety Symbols  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   1
Important Safety Instructions & Guidelines   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   1
Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....

1
Risk of Moving PartsIf  the  air  compressor  is  in  operation,  all  guards  and  covers  should  be  attached  or 
installed  correctly.  If  any  guard  or  cover  has  been  damaged,  do  not  operate  the 
equipment until the proper personnel has correctly repaired the equipment. The power 
cord should be free of any moving parts, twisting and/or crimping while in use and while 
in storage.
Risk of BurnsThere  are  surfaces  on  your  air  compressor  that  while  in  operation  and  thereafter...

2
Risk of 
Explosion or FireNever operate the compressor near combustible materials, gasoline or solvent vapors. 
If spraying flammable materials, locate the air compressor at least 20 feet away from the 
spray area. Never operate the air compressor indoors or in a confined area.
Risk of BurstingAlways drain the air compressor tank daily or after each use. If the tank develops a leak, 
then  replace  the  air  compressor.  Never  use  the  air  compressor  after  a  leak  has  been 
found  or  try  to...

3
Parts & Features 
See figures below for reference.
Pressure Relief Tube Outlet Tube
Oil Sight Gauge Oil Fill Cap
 
  
  Pressure Switch
    This controls the power to the motor and also the    
    cut-in/cut-out pressure settings. This switch serves    
    as the Auto-On/Off positions for the unit.
 
  Regulator
    The air pressure coming from the air tank is controlled 
    by the regulator. To increase the pressure turn the    
    knob  clockwise and to decrease the pressure  turn the 
    knob...

The  air  compressor  should  be  turned  off,  unplugged  from 
the  power  source,  the  air  bled  from  the  tank  and  the  unit 
allowed time to cool before any maintenance is performed. 
Personal  injuries  could  occur  from  moving  parts,  electrical 
sources,  compressed  air  or  hot  surfaces.  The  quick 
connect  assembly  must  be  attached  before  use.  Failure 
to  assemble  correctly  could  result  in leaks  and  possible 
injury. If unsure of assembly instructions
  or you...

5
Operating Procedures
Daily Shut-Down Procedures
1.  Set the Auto-On/Off lever to the Off position.
2.  Unplug the power cord from the receptacle.
3.  Set the outlet pressure to zero on the regulator.
4.  Remove any air tools or accessories. When draining 
  the tank, always use ear and eye protection. Drain the 
  tank in a suitable location; condensation will be present 
  in most cases of draining.
5.  Open the drain valve allowing air to bleed from the 
  tank. After all of the air has bled from...

NOTE: Any  service  procedure  not  covered  in  the  
maintenance  schedule  should  be  performed  by 
qualified service personnel.
The air compressor should be turned off, unplugged 
from  the  power  source,  air  bled  from  the  tank  and 
allowed  time  to  cool  before  any  maintenance  is 
performed.
To  ensure  efficient  operation  and  longer  life  of  the 
air compressor unit, a routine maintenance schedule 
should be followed. The following schedule is geared 
toward a consumer whose...

77
Troubleshooting Guide
PROBLEM       POSSIBLE CORRECTION
Air leaks at the check valve  A  defective  check  valve  results  in  a  constant  air  leak  at  the  pressure  relief  valve
or at the pressure relief valve.  when  there  is  pressure  in  the  tank  and  the  compressor  is  shut  off.  Drain  the  tank,
        then remove and clean or replace the check valve.
       
Air leaks between head and  Be  sure  of  proper  torque  on  head  bolts.  If  leak  remains,  contact  a  service...

8
Air Compressor Model 15312
Parts List