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Operating Instructions and Parts List
4
www.chpower.com
MW2500 Series
Installation (Continued)
Improper
use of
grounding plug can result in
a possible risk of electrical
shock!
Do not use a
grounding adapter
with this product!
2. If repair or replacement of cord or
plug is necessary, do not connect
grounding wire to either flat blade
terminal. The wire with insulation
having an external surface that
is green (with or without yellow
stripes) is the grounding wire.
Never connect
green (or green
and yellow) wire to a live terminal.
3. Check with a qualified electrician
or serviceman if grounding
instructions are not completely
understood, or if in doubt as
to whether product is properly
grounded. Do not modify plug
provided; if it will not fit outlet,
have proper outlet installed by a
qualified electrician.
Overheating, short
circuiting and fire
damage will result from inadequate
wiring.
LUBRICATION
This is an oilless product and DOES
NOT require lubrication to operate.
Pre-Operation
BEFORE FIRST START-UP
BREAK-IN PROCEDURE
(Complete this procedure before
using compressor for the first time.
Once completed, it is not necessary to
repeat.)
1. Turn regulator knob fully clockwise
(to the right) to open air flow.
2. Do not attach a hose or any other
fitting to the compressor.
3. Turn ON / OFF switch to OFF
position.
4. Plug in power cord.
5. Turn ON / OFF switch to ON
position and run compressor for 30
minutes.
6. Turn ON / OFF switch to OFF
position.
7. Unplug power cord.
The compressor is now ready for use.
BEFORE EACH START-UP
OPERATING PROCEDURE
1. Turn regulator knob fully
counterclockwise (to the left) to
close air flow.
2. Connect air hose to outlet of
regulator.
3. Turn ON / OFF switch to OFF
position.
4. Plug in power cord.
5. Turn ON / OFF switch to ON
position and let compressor run
until it reaches automatic shutoff
pressure.
6. Attach tire chuck or tool to end of
hose.
7. Turn regulator knob clockwise (to
the right) to desired pressure of
tool being used.
Operation
START-UP
Do not attach air
tools to open end
of the hose until start-up is completed
and the unit checks OK.
ON / OFF CYCLING OF COMPRESSOR
In the ON / AUTO position, the
compressor pumps air into the tank.
When a shut-off (preset “cut-out”)
pressure is reached, the compressor
automatically shuts off.
If the compressor is left in the
ON / AUTO position and air is depleted
from the tank by use of a tire chuck,
tool, etc., the compressor will restart
automatically at its preset “cut-in”
pressure. When a tool is being used
continuously, the compressor will cycle
on and off automatically.
In the OFF position, the pressure
switch cannot function and the
compressor will not operate. Make
sure switch is in OFF position when
connecting or disconnecting power
cord from electrical outlet.
PRESSURE GAUGES
The large gauge next to the regulator
knob indicates air pressure going to
hose (and any tool attached to end of
hose).
The small gauge next to the safety
valve indicates air pressure in tank.
MOISTURE IN COMPRESSED AIR
Moisture in compressed air will form into droplets as it comes from an
air compressor pump. When humidity is high or when a compressor is in
continuous use for an extended period of time, this moisture will collect
in the tank. When using a paint spray or sandblast gun, this water will be
carried from the tank through the hose, and out of the gun as droplets mixed
with the spray material.
IMPORTANT: This condensation will cause water spots in a paint job,
especially when spraying other than water based paints. If sandblasting, it
will cause the sand to cake and clog the gun, rendering it ineffective.
A filter in the air line, located as near to the gun as possible, will help
eliminate this moisture.
EXTENSION CORDS FOR 120V / 15 AMP UNIT
Length of Cord
(Feet)
25 50 100 150 200 250 300 400 500
Gauge of Cord 16 12 10 8 6 6 4 4 2
TEST
RESET
Figure 3 - Grounding Method
Grounded
Outlet
Grounding
Pin