Signode TENSION-WELD VXL-2000-Z Operation, Parts And Safety Manual page 7

STRAP TENSION
Strap tension is controlled by air pressure. Adjust the pressure regulator, within a range of 70 - 90
psig (4.8-6.2 bar), to provide the desired tension. Once the regulator is set the tension will be
uniform on all straps, provided the operator allows the air motor to stall. The air pressure gauge
must be accurate. Confirm calibration by comparing it to a master gauge.
The VXL-2000Z tool is factory tested to ensure that at least 90 lbs. (400N) of tension is drawn at 90
psig (6.2 bar) and the VXM-2000Z tool is factory tested to ensure that at least 140 lbs. (621 N) of
tension is drawn at 90 psig (6.2 bar).
Review the instructions on page 10 of this manual for information on how to adjust strap tension.
Strap can break if inlet air pressure to tool exceeds 90 psig (6.2 bar).
AIR CONSUMPTION - Air consumption in cubic feet per minute (cfm) for the VXL/M can be
calculated as follows: cfm = (a) x (b) x (0.17)
a = Number of straps applied per minute.
b = Number of seconds motor is on per strap during tensioning, from start to deceleration
to stall including stall time while making joint.
0.17 = VXL/M efficiency ratio.
Example Calculation: Peak strapping load is 4 straps/min. so a = 4
Air pressure is assumed to be 90 psig (6.2 Bar) with recommended size and length of air hose.
Volume of air is at room temperature and sea level pressure, or so-called "free air" conditions. For
more detailed information about air supply systems refer to Signode manual Part No. 186038.
COLD WEATHER OPERATION
If a tool does not operate satisfactorily in freezing temperatures, certain steps can correct the
problem. The following steps can be taken to improve cold weather operation of the tool:
a. An air line dryer adjacent to the compressor.
b. Use lubricant recommended by Signode. Signode has tested the use of anti-freezes, none
work well in air tools; the tool will gum up when anti-freezes are introduced and will not
function properly. The best lubricant for freezing weather is the 1 to 1 oil and kerosene
combination.
c. If possible, run the air supply line to a indoor located Filter-Regulator-Lubricator or relocate the
F-L-R to a warmer operating area.
Strap breakage hazard.
Strap breakage can result in severe personal injury.
Maximum operating air pressure is 90 psig (6.2 bar).
Air motor is on 5 seconds/strap, so b = 5
VXL/M efficiency ratio is 0.17
(a)x(b)x(0.17) 6 4x5x0.17=3.4 cubic ft/min.
4x5x0.28=5.6 cubic meters/hr. (5.6M
3
/hr.)
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