Craftsman 919.728000 - Manuel (Page 10)

10 — ENG D21245
Break-in Procedure
Serious damage may result if the following
break-in instructions are not closely fol-
lowed.
This procedure is required only once, before the air com-
pressor is put into service.
1. Set the pressure switch "AUTO/O" lever in the
"O" position for "Off".
2. Plug the power cord into the correct branch circuit
receptacle.
3. Do not attach hose to outlet. Leave the outlet open
to the atmosphere.
4. Turn the regulator clockwise, opening it fully, to
prevent air pressure build-up in the tank.
5. Move the "AUTO/O" lever to "AUTO". The com-
pressor will start.
6. RUN THE COMPRESSOR FOR 30 MINUTES.
Make sure the regulator is open and there is no tank
pressure build-up.
7. After 30 minutes, close the regulator by turning it
counterclockwise. The air tank will fill to cut-out
pressure and then the motor will stop.
Certain air compressors can be converted from
120V to 240V operation. When converting an
air compressor to 240V operation, the
attached three-prong 120V cord assembly
must be replaced with a three-pronged 240V
cord assembly that can be purchased through
a Sears Service Center.
Some models have a dual voltage motor, 120 and 240
volt. They are wired for 120 volt but can be converted
to 240 volt operation. Instructions for connecting the
motor for operation at 240 volt can be found printed on
the label attached to the side of the motor.
Certain air compressor models can be operated
on a 15 amp circuit if:
1. Voltage supply to circuit is normal.
2. Circuit is not used to supply any other electrical
needs (lights, appliances, etc.)
3. Extension cords comply with specifications in
this manual.
4. Circuit is equipped with a 15 amp circuit
breaker or 15 amp time delay fuse.
Extension Cords
To avoid voltage drop and power loss to the motor, and to
prevent overheating, use extra air hose instead of an
extension cord.
If an extension cord must be used:
• use only a 3-wire extension cord that has a 3-
blade grounding plug and a 3-slot receptacle that
will accept the plug on the extension cord.
• make sure the extension cord is in good condition.
• the extension cord should be no longer than 50
feet.
• the minimum wire size is 12 gauge (AWG). (Wire
size increases as gauge number decreases. 10
AWG and 8 AWG may also be used. DO NOT USE
14 AWG or 16 AWG.)
Piping
Plastic or PVC pipe is not designed for use with
compressed air. Regardless of its indicated
pressure rating, plastic pipe can burst from air
pressure. Use only metal pipe for air distribution
lines.
If a pipe line is necessary, 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 under-
ground lines are covered to make sure all pipe joints
are free of leaks.
Connect the piping to the 3/8" NPT air outlet opening
at the end of the air tank.
Additional Regulators and Controls
Since the air tank pressure is usually greater than that
which is needed, a separate regulator is employed to
control the air pressure ahead of any individual air
driven device.
Separate air transformers which combine the function
of air regulation, moisture and dirt removal should be
used where applicable.