Signode AMPT-12, Operation, Parts And Safe

Page: 6 / 36

6
PNEUMATIC INFORMATION, Continued
MOISTURE
Moisture is always present in air lines due to
condensation within the lines as the air
cools. Steps must be taken to remove this
moisture and to keep it from the air tool.
This is because water tends to wash away
lubricants and cause corrosion, sticking and
failure of internal parts.
The main line should be pitched so the far
end terminates in a water leg. Branch lines
are taken from the top of the main, never off
the bottom. Every branch should have a
water leg at its lowest point, with a drain
cock which is drained daily.
If these precautions are taken and water is
still present, an after cooler and a moisture
separator are required between the compres-
sor and the air receiver tank. A large air line
separator can be installed in the air tool line,
but precautions must be taken to insure that
it will be drained daily, before the air tool is
operated.
Water in air lines is a constant threat to the
proper operation of air tools. Even near
freezing operating conditions, a good
refrigerant type dryer is essential. A good
dryer will remove 95% or more of water right
at the compressor. The remaining moisture
is removed at the water leg in the piping
system or in the filter portion of the F-L-R
(Part No. 173111) unit.
NOTE: Additional information is available in
the Signode publication, "Air Supply Manual"
(Part No. 186038). If you have any questions,
contact your local Signode Representative.
LUBRICATION
The air motor must be properly lubricated.
This is achieved by keeping the air line
lubricator filled with oil and correctly
adjusted. Without proper lubrication, the
motor will become sticky and the tool will
give low and erratic tension and be difficult
to release from the strap.
Install the lubricator as close to the air tool
as possible. The arrow on the lubricator's
top surface must point in the direction of air
flow.
For proper operation, oil must drop through
the lubricator sight glass at a rate of 1 to 4
drops per minute. This rate is checked while
the air tool is running free. Only 20% of this
oil is actually delivered to the tool. The
remaining oil drops back into the oil
reservoir. The unit is factory set and should
require no adjustment. If an adjustment is
required, the adjusting screw on top of the
lubricator may be turned as marked to
reduce or increase the flow of oil.
The correct grade of oil must be used in the
lubricator; too heavy an oil will not provide
sufficient lubrication and will cause sticking
and sluggish operation of the air tool.
Recommended oils are any good grade of
rust and oxidation inhibiting oil with a
viscosity of 80-120 S.U.S. at 100 degrees
Fahrenheit. (0.15 to 0.25 cm
2
/sec. at 38
degrees Celsius), such as:
Non Fluid Oil Co., grade #LS-1236
Signode oil - Part No. 008556
If necessary, use SAE #5 or SAE #10 non-
detergent, cut 1 to 1 with kerosene.
NOTE: Some oils contain anti-wear additives
which may disable the air motor. Be certain
to use recommended oil.
Several drops of lubricator oil added to the
inlet of the air motor or into the air line each
day will help insure good operation. A
noticeable reduction of air motor
performance can usually be corrected by
squirting a few drops of oil into the air line.