bEFORE EACH START-UP
OPERATING PROCEDURE
1. Turn regulator knob fully counter
clockwise (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.
ON/OFF CYCLING OF COMPRESSOR
In the ON 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
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.
ASME SAFETY VALVE
Do not remove or
attempt to adjust
the safety valve!
Check the safety valve by performing
the following steps:
1. Plug the compressor in and run until
shut off pressure is reached (see
Operating Procedure).
2. Wearing safety glasses, pull the ring
on the safety valve (see Figure 6) to
release pressure from compressor
tank. Use your other hand to deflect
fast-moving air from being directed
toward your face.
3. The safety valve should automatically
close at approximately 40-50 psi. If the
safety valve does not allow air to be
released when you pull on the ring,
or if it does not close automatically, it
MUST be replaced.
Safety valve must
be replaced if it
cannot be actuated or it leaks air after
ring is released.
PRESSURE GAUGES
Gauge attached to regulator indicates
air pressure going to hose (and any tool
attached to end of hose).
Gauge attached to pressure switch
indicates air pressure in tank.
Maintenance
Release all pressure
and disconnect
power before making any repair.
1. Check compressor for any visible
problems, especially check air filter to
be sure it is clean.
2. Pull ring on safety valve and allow it to
snap back to normal position (Figure 6).
Safety valve must
be replaced if it
cannot be actuated or it leaks air after ring
is released.
3. Daily with compressor shut off:
Depressurize system prior to draining
tank. Drain moisture from tanks by
opening drain cocks on the side or
underneath end of tank.
NOTE:
Drain cup should be emptied
regularly.
Do not remove drain
plug with tank under pressure.
4. Turn power OFF and clean dust and dirt
from motor, tank, air lines and pump
cooling fins.
NOTE:
The air filter in the filter housing on
the side of the head must be checked and
cleaned periodically, more often if used
under very dusty conditions or when a
great deal of fog from spraying is allowed
to circulate near unit.
IMPORTANT:
Unit should be located as far
from spraying area as hose will allow to
prevent over-spray from clogging filter.
FILTER REMOVAL, INSPECTION AND
REPLACEMENT
To change a filter, pull off the filter
housing cover. If filter element is dirty,
rotate filter cover so the holes line up with
clean element material and snap cover
onto housing. If filter element has no clean
areas, replace element or entire filter.
LUbRICATION
This is an oilless type compressor requiring
no lubrication.
THERMAL OVERLOAD PROTECTOR
Turn off the pressure switch or unplug
compressor for 20 minutes and allow it to
cool. Reset the unit. Switch unit to OFF and
turn ON again to resume work.
This compressor is
equipped with a
manual reset thermal overload protector
which will shut off motor if it becomes
overheated.
If thermal overload protector shuts
motor off frequently look for the
following causes.
1. Low voltage.
2. Wrong gauge wire or length of
extension cord.
3. Clogged air filter.
4. Lack of proper ventilation.
The motor must be
allowed to cool
down before start-up is possible. The
motor will automatically restart without
warning if left plugged into electrical
outlet, if the motor is turned on.
STORAGE
1. When not in use, hose and compressor
should be stored in a cool dry place.
2. Tank should be drained of moisture.
3. Hose should be disconnected and hung
open ends down to allow any moisture
to drain.
5
www.chpower.com
HM7000 and HU2000
Operation
(Cont.)
Figure 7
Figure 6
