Compressor Controls; Electrical Power Requirements - Craftsman 921.16473 Manuel Du Propriétaire

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.
Tank Safety Valve (see B)
Used to allow tank pressure to escape into the atmosphere.
If the pressure switch does not shut off the compressor at it's
"cut-out" pressure setting, the safety valve will protect against
high pressure by releasing tank pressure at it's factory set
pressure (slightly higher than the pressure switch "cut-out"
setting). To operate manually, pull the ring on the valve to relieve
air pressure in the tank.
Pressure Release Valve (see C)
The pressure release valve (located on the bottom of the
pressure switch), is designed to release compressed air from the
compressor head and outlet tube when the compressor reaches
"cut-out" or is shut off. The pressure valve allows the motor to
restart freely. When the motor stops running, air will be heard
escaping from this valve for a few seconds. No air should be
heard leaking when the motor is running or after brief release
after reaching "cut-out" pressure.
Tank Pressure Gauge (see D)
This gauge measures the pressure level of the air stored in
the tank. It is not adjustable by the operator, and does not
indicate line pressure.
Air Pressure Regulator (see E)
MOTOR RESET SWITCH
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 H) to restart the
motor.
ELECTRICAL WIRING
Refer to the air compressor's serial label for the unit's voltage
and amperage requirements.
Use a dedicated circuit
For best performance and reliable starting, the air
compressor must be plugged into a dedicated circuit, as
close as possible to the fuse box or circuit breaker. The
compressor will use the full capacity of a typical 15 amp
household circuit. If any other electrical devices are drawing from
the compressor's circuit, the compressor may fail to start. Low
voltage or an overloaded circuit can result in sluggish starting that
causes the motor overload protection system or circuit breaker to
trip, especially in cold conditions.

COMPRESSOR CONTROLS

ELECTRICAL POWER REQUIREMENTS

H
This air pressure regulator enables you to adjust line
pressure to the tool you are using.
WARNING:
Never exceed the maximum working
pressure of the tool.
To adjust pressure setting, pull out the knob and turn
clockwise to increase pressure, and counterclockwise to
decrease pressure. To lock a pressure setting, push the knob in.
Regulated Pressure Gauge (see F)
This gauge measures the regulated line pressure.
Quick Connect(s) (see G)
A quick release for attaching and removing the air hose.
A
C
F
G
NOTE: To handle the initial electrical load of starting the air
compressor, a circuit breaker is recommended. If the air
compressor is connected to a circuit protected by a fuse, use dual
element time delay fuses (Buss Fusetron type "T" only).
EXTENSION CORDS
NOTE: Avoid use of extension cords.
For optimum performance, plug the compressor power cord
directly into a grounded wall socket. Do not use an extension cord
unless absolutely necessary. Instead, use a longer air hose to
reach the area where the air is needed.
If use of an extension cord cannot be avoided, the cord
should be no longer than 50 feet and be a minimum wire size of
12 gauge (AWG). Do not use a 16 or 14 gauge extension cord.
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 product. Make sure your extension cord is in good
condition. An undersized cord will cause a drop in line voltage,
resulting in loss of power and overheating. The smaller the gauge
number, the heavier the cord.
GROUNDING INSTRUCTIONS
This product should be grounded. In the event of an electrical
short circuit, grounding reduces the risk of electric shock by
providing an escape wire for the electric current.
6
B
D
E
Fig. 3
200-2802