Filter
Top Products
Never connect
green (or green and
yellow) wire to a live terminal.
Check with a qualified electrician
or serviceman when the grounding
instructions are not completely
understood, or when in doubt as
to whether the product is properly
grounded. Do not modify the plug
provided; if it does not fit the outlet,
have the proper outlet installed by a
qualified technician.
This product is for use on a nominal
120V circuit and has a grounding plug
similar to the plug illustrated in Figure
2. Only connect the product to an
outlet having the same configuration
as the plug. Do not use an adapter with
this product.
EXTENSION CORDS
To avoid loss of
power and
overheating, it is better to use
additional air hose instead of extension
cords to reach work area.
Use only a 3-wire extension cord that
has a 3-blade grounding plug, and
a 3-slot receptacle that accepts the
plug on the product. Make sure your
extension cord is not damaged. When
using an extension cord, be sure to use
one heavy enough to carry the current
your product draws. An undersized
cord results in a drop in line voltage
and loss of power and overheating.
[The table shows the correct size to
use depending on cord length and
nameplate ampere rating. When in
doubt, use the next heavier gauge.
The smaller the gauge number, the
heavier the cord.]
Extension cords for
120V/10 Amp Unit
Length of
Cord (ft)
25 50 100
Gauge of
Cord
16 14 10
Operation
• PressureSwitch - ON/OFF Switch
(Figure 3) - In the ON position, the
compressor shuts off automatically
when tank pressure reaches the
maximum preset pressure. In the
4
Portable Air Compressors
OFF position, the compressor will
not operate. This switch should be in
the OFF position when connecting
or disconnecting the power cord
from the electrical outlet or when
changing air tools.
• Regulator - The regulator controls
the amount of air pressure released
at the hose outlet.
• ASME Safety Valve - This valve
automatically releases air if the
tank pressure exceeds the preset
maximum.
• Exhaust Tube - This tube carries
compressed air from the pump to
the check valve. This tube becomes
very hot during use. To avoid the
risk of severe burns, never touch
the exhaust tube.
• Check Valve - A one-way valve
that allows air to enter the tank, but
prevents air in the tank from flowing
back into the compressor pump.
• Handle - Designed to move the
compressor.
• Drain Valve - This valve is located on
the bottom of the tank. Use this valve
www.chpower.com
Installation (Cont.)
AUTO
OFF
Figure 3 - ON/OFF Switch
HM7500
HM7510
Outlet pressure
gauge
Air outlet /
coupler
Regulator
Tank pressure
gauge
ASME Safety
valve
NOTE: Drain Valve on bottom of units (not shown).
Pressure
switch
Outlet
pressure
gauge
Air outlet /
coupler
Regulator
ASME Safety valve
Pressure switch
Tank pressure gauge