VT-19/25 HD
TENSION-WELD®
STRAPPING TOOL
READ THESE INSTRUCTIONS CAREFULLY.
FAILURE TO FOLLOW THESE INSTRUCTIONS CAN RESULT IN SEVERE PERSONAL INJURY.
GENERAL SAFETY CONSIDERATIONS
1. STRAP BREAKAGE HAZARD.
Improper operation of the tool or sharp corners on the load can result in strap breakage during
tensioning, which could result in the following:
A sudden loss of balance causing you to fall.
Both tool and strap flying violently towards your face.
Failure to place the strap properly around the load or an unstable or shifted load could result
in a sudden loss of strap tension during tensioning. This could result in a sudden loss of
balance causing you to fall.
Read the tool's operating instructions. If the load corners are sharp use edge protectors.
Place the strap correctly around a properly positioned load.
Positioning yourself in-line with the strap, during tensioning and sealing, can result in
severe personal injury from flying strap or tool. When tensioning or sealing, position
yourself to one side of the strap and keep all bystanders away.
Using strap not recommended for this tensioner can result in strap breakage during
tensioning. Use the correct Signode products for your application.
2. TRAINING.
This tool must not be used by persons not properly trained in its use. Be certain that you
receive proper training from your employer. If you have any questions contact your Signode
Representative.
3. EYE INJURY HAZARD.
Failure to wear safety glasses with side shields can result in severe eye injury or
blindness. Always wear safety glasses with side shields which conform to ANSI
Standard Z87.1 or EN 166.
4. FALL HAZARD.
Maintaining improper footing and/or balance when operating the tool can cause you to fall. Do
not use the tool when you are in an awkward position.
5. CUT HAZARD.
Handling strap or sharp parts could result in cut hands or fingers. Wear protective
gloves.
2
6. TOOL CARE.
Take good care of the tool. Inspect and clean it daily, lubricate it weekly and adjust when
necessary. Replace any worn or broken parts.
7. WORK AREA.
Keep work areas uncluttered and well lighted.
Several types of strap can be used with this tool. Use the correct Signode products for your
application. If you need help contact your Signode Representative.
SAFETY PROCEDURES FOR TOOL OPERATION
Before using this tool, read its Operation and Safety instructions.
Do not exceed the operating air pressures stated elsewhere in the manual.
Use Signode's approved filter-regulator-lubricator unit (P-008559).
Never operate a pneumatic tool with a bottled air or gas source.
For tension adjustments, follow instructions in this manual. For all other adjustments,
repairs or cleaning of the tool, disconnect air supply.
This tool is a Tension Weld® type sealer. A properly made
joint will appear as shown in the illustration. If the joint does
not appear as shown, then the operator must proceed as
follows:
A. Insure that the tools operating instructions are
being followed before applying another strap.
B. Cut the strap off and apply another.
If the joint still does not appear as shown, then inspect the tool for worn and/or damaged parts.
Replace tool parts as needed. NEVER HANDLE OR SHIP ANY LOAD WITH IMPROPERLY FORMED
JOINTS. Misformed joints may not secure the load and could cause serious injury.
Tuck strap end back into the dispenser when not in use.
CUTTING TENSIONED STRAP
Use only cutters designed for cutting strap; never use claw hammers, crowbars, chisels, axes or
similar tools. Such tools will cause the strap to fly apart with hazardous force. Before using any
Signode product, read its Operation and Safety Manual.
3
TABLE OF CONTENTS
Page
Page
General Safety Instructions
2
Parts List, Tool
19
Specifications
4
Parts List, Air Motors
24
Major Components
5
Troubleshooting
27
Pneumatic Information
6
Maintenance
31
Operating Instructions
12
Tool Options
32
Adjustments
16
VT-19 HD Strapping Tool, Signode Part No. 426160
VT-25 HD Strapping Tool, Signode Part No. 423992
SPECIFICATIONS
STRAP
MODEL
TYPE
WIDTH
THICKNESS
VT-19 HD
High Strength
Tenax
19mm
Up to 0.055" (1.4mm)
25mm
Up to 0.039" (1.0mm)
VT-25 HD
4
MAJOR COMPONENTS
5
PNEUMATIC INFORMATION
AIR PRESSURE REQUIREMENTS
The VT tools are designed to operate at an air pressure of 90 psig (6.2 Bar).
AIR PRESSURE VS. PERFORMANCE
The air pressure supplied to the VT tool must be a minimum of 85 psig (5.7 Bar) If the air supply
pressure can be adjusted within a range from 85 psi to 90 psi (5.7 - 6.2 Bar) the VT tool's
performance can be fine tuned to a particular application or operation preferences. Changing the
VT air supply pressure to the tool will directly alter the rate at which the tool will take-up the strap
slack and the strap tension. Increasing or decreasing the VT air supply within the suggested 85 to
90 psig (5.7-6.2 Bar) range will not seriously affect the actual welding portion of the strap cycle.
After an initial "Break-In" period, the air motor may become more powerful. If the tool's
performance is effected by this increase in performnace, reduce the air motor output by turning
the adjustment screw (Key 98) counter-clockwise as required.
AIR SUPPLY INSTALLATION
If compressor has a good dryer unit, use black pickled pipe. When a dryer unit is not installed,
use galvanized or copper pipe. To perform reliably, a pneumatic tool requires a continuous source
of clean, water-free air at adequate pressure.
Never operate this tool using a bottled air or gas source.
Bottled air/gas sources do not provide consistent operating pressure.
A filter-regulator-lubricator (FRL) unit
must be installed as close to the air
tool as possible, preferably within 10
feet. It should be placed in a
convenient location where it can
easily be drained, adjusted, and filled
with oil. The air hose must have at
least a 1/2" I.D. A quick disconnect
socket fitting is installed on the
stress spring end of the hose for
convenient hookup to the air tool.
Filter-Regulator-Lubricator Unit, 1/2" NPT
(Signode Part No. 424773)
FRL Mounting Bracket
(Signode Part No. 071982)
Air Hose, 1/2" ID, 3/8" Fittings
(Signode Part No. 424774)
Quick Disconnect, 3/8" Fitting
(Signode Part No. 008569)
Reducer Bushing, 1/2" to 3/8"
(Signode Part No. 071632)
6
Filter and lubricator bowls are made of polycarbonate material. Do not install where bowls may be
exposed to materials incompatible with polycarbonate. Certain oils, solvents, and chemicals or
their fumes can weaken these bowls and possibly cause them to burst. Clean only with warm
water. A cut-off valve placed ahead of the filter will be useful when cleaning the filter or
replenishing the lubricator.
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 compressor 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 tool. 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.
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 cm2 /sec. at 38 degrees Celsius), such as:
Non Fluid Oil Co., grade #LS-1236
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.
7
PNEUMATIC INFORMATION, Continued
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.
STRAP TENSION
Strap tension is controlled by turning the adjustment
screw (Key 98) as shown by arrow, in 1/4 increment
turns counter-clockwise to increase strap tension and
clockwise to reduce strap tension.
NOTE: Operating air pressure must be set between 85
and 90 psi (5.7-6.2 Bar). With accurately controlled air
pressure the tension will be uniform on all straps,
provided the operator allows the air motor to stall.
Strap breakage hazard.
Strap can break if inlet air pressure to tool exceeds 90 psig (6.2 bar).
Strap breakage can result in severe personal injury.
Maximum operating air pressure is 90 psig (6.2 bar).
AIR CONSUMPTION
Air consumption in cubic feet per minute (cfm) for the VT can be calculated as follows: cfm = (a) x
(b) x (0.40)
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.
0.40 = VT efficiency ratio.
Example Calculation: Peak strapping load is 4 straps/min. so a = 4
Air motor is on 5 seconds/strap, so b = 5
VT efficiency ratio is 0.40
(a)x(b)x(0.40) 4x5x0.40=8 cubic ft/min.
4x5x0.67=13.4 cubic meters/hr. (13.4M3/hr.)
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.
8
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 tool; 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-R-L to a warmer operating area.
AIR PRESSURE DROP
Confirm air pressure calibration by
comparing it to a master gauge
placed in-line where the quick
disconnect fitting attaches to the
tool.
Air pressure at the tool can then be
monitored as the tool cycles. Use
the following information shown
on the chart below for comparing
the various minimum air pressures
while the VT tool cycles.
If pressure readings fall below the minimums, inspect your air supply system as well as the tool
for worn and/or broken parts. Contact your Signode representative if you have any questions.
AIR LINE PRESSURE MINIMUMS FOR CYCLING TOOL
IN-LINE GAUGE READING PSI (BAR)
SUPPLY/STATIC
TAKE-UP
STALL
WELDING
90 (6.2)
61 (4.1)
80 (5.4)
75 (5.2)
9
PNEUMATIC INFORMATION, Continued
Pneumatic Circuit Diagram
10
OPERATING INSTRUCTIONS
Wear safety glasses. Stand to one side of the strap when tensioning.
Make sure all bystanders are clear before proceeding.
PLEASE NOTE: Do not operate tool without strap, as damage to the tool may occur.
1. With the dispenser placed
behind you, bring the strap over
the top and around the package,
place the straps together and
remove any excess slack.
2. Using your right hand, squeeze
the tension motor and stationary
handle together to open the
feedwheel and strap path. Using
your left hand, insert the
overlapped straps under the
feedwheel and through the
welding mechanism.
Leave only a short tail ahead of
the feedwheel and make sure
straps are aligned behind the
tool. Do not make a joint over a
void area of the package.
12
3. Recheck the strap alignment at
the rear of the tool and realign if
necessary. Release the tension
motor.
Press down the Green Tension
Control Lever to begin
tensioning the strap.
When the tension motor stalls, indicating completion of tension, release the control lever. The
strap will remain tensioned around the package.
NOTE: If the strap alignment is unsatisfactory or the tool needs to be removed before sealing.
First, move the Red tension release latch to the left to disengage the tension motor. Continue
to remove the tool from the strap by first lifting up the tension release lever found on the
bottom of the gear housing while squeezing the tension motor and stationary handle together
to open the strap path.
4. Press the Blue Sealer Control
lever to begin the sealing cycle.
It is not necessary to continue
holding the lever down once the
weld cycle has started.
13
OPERATING INSTRUCTIONS, Continued
5. The internal weld timer is
energized. The main piston
brings the welding pads
together and the strap is
welded.
The supply end of the strap is
then cut off. Pull the cut strap
away from the tool during
welding. The tool will continue
through the weld cycle and stop
automatically.
6. When the weld cycle has completed the weld mechanism slowly returns to the neutral
position. This allows the newly welded strap joint to cool down properly. The tool can be
easily removed once the weld mechanism has completely returned to the neutral position.
NOTE: The weld
mechanism’s return to the
neutral position can be
identified by the indicator
located on the top of the
tool. When the indicator is
in the down position the
weld mechanism is still
engaging the strap. When
the indicator is in the up
position the weld
mechanism has returned to
the neutral position. The
tool can then be easily
removed from the strap.
INDICATOR IN THE UP POSITION
(NEUTRAL)
INDICATOR IN THE DOWN POSITION
(ENGAGED)
Remove the tool from the
strap by first lifting up the
tension release lever found
on the bottom of the gear
housing while squeezing the
tension motor and stationary
handle together to open the
strap path.
NOTE: Failure to wait for the weld mechansim to return to the neutral position may lead to an
improperly formed joint which may lead to joint separation and make tool removal difficult.
14
7. Swing the tool out from the
completed strap joint. Inspect
the joint to make sure the straps
have been properly welded.
STRAP JOINT INSPECTION
This tool is a Tension Weld® type sealer. A properly made joint will appear as shown in the
illustration. If the joint does not appear as shown, then the operator must proceed as
follows:
1. Insure that the tool operating instructions are being followed before applying another
strap.
2. Cut the strap off and apply another.
A good weld will show some material displacement along
the edges. The welded area should extend the full length
and width of the gripper impression.
If the joint still does not appear as shown, then inspect the tool for worn and/or damaged
parts. Replace tool parts as needed. NEVER HANDLE OR SHIP ANY LOAD WITH
IMPROPERLY FORMED JOINTS. Misformed joints may not secure the load and could cause
serious injury.
15
TOOL ADJUSTMENTS
WELDING TIME
Weld time has been factory adjusted to provide acceptable weld strength when using High
Strength Tenax (polyester) type strap. Weld time may need to be adjusted due to air supply
differences, tool wear, etc. Adjustments are made by turning the adjustment screw, located on the
cover plate, using a small screwdriver. Turn the screw clockwise to increase weld time and
counterclockwise to decrease weld time.
Establishing the correct weld time is a matter of trial and error and should be conducted as
follows.
1. Remove the cap which protects the adjustment
screw. Adjust the screw in 1/8 to 1/4 turn increments
only.
2. Apply a strap and make a weld.
3. Compare the weld made with the illustrations shown
on page 13 of this manual. A good weld will displace
some material along the outer edges of the joint.
4. If you are unable to produce an acceptable joint or if
you have any questions as to whether your tool is
producing good weld strength, contact your
Signode Sales Representative.
LOCATION OF WELD TIME ADJUSTMENT
5. Replace the cap over the screw.
WELD COOLING TIME
Cool time has been factory adjusted to allow the proper time for a weld to properly cool. The cool
time adjust controls how fast or slow the main piston bleeds off air pressure allowing the weld
pads to separate from one another.
Cool time may also need to be adjusted due to air supply differences, tool wear, etc. Adjustments
are made similar to weld time. Turning the screw clockwise increases cool time and
counterclockwise to decrease cooling time.
Establishing the correct cool time is a matter of trial and error and should be conducted as
follows.
1. Remove the cap which protects the adjustment
screw. Adjust the screw in 1/8 to 1/4 turn increments
only.
2. Apply a strap and make a weld.
3. A properly adjusted cool time should allow the strap
joint to cool for approximately three to five seconds.
NOTE: Cool time which is too short may lead to
strap joint separation.
4. Replace the cap over the screw.
LOCATION OF COOL TIME ADJUSTMENT
16
FEEDWHEEL TO GRIPPER PLUG
The feedwheel to gripper plug clearance may require readjustment if the feedwheel or gripper plug
has been replaced. The feedwheel clearance should also be inspected during routine tool
maintenance procedures. Adjust the feedwheel clearance as follows:
1. Squeeze the tension motor and stationary handle
together to open the feedwheel gap. Place multiple
(4 to 8) layers of .002", 1/2" wide (.05 x 12mm) shim
stock between the feedwheel and the gripper plug.
NOTE: Do not use a single shim such as .008"
(.20mm) as thicker shims may not conform to the
feedwheel shape, resulting in inaccurate clearance
measurements.
2. Release the tensioner motor to pinch the shims
between the feedwheel and the gripper plug.
Holding the shims with one hand, jog the tension
motor on and off to rotate the feedwheel at least one
full revolution. If properly adjusted the tool should
lightly tug at the shims while rotating. Clearance between the feedwheel and gripper plug at
this point should fall between .008" to .016 (.20mm to .40mm).
3. If the feedwheel needs to be adjusted, use a 3mm hex
wrench to turn the adjustment screw which can be
accessed through the bottom of the tool base.
Turn the adjustment screw clockwise for greater
clearance and counter-clockwise for less clearance.
Turn the adjustment screw only in 1/8 turn increments.
After each 1/8 turn, repeat the adjustment testing as
described in step 2.
4. Once the proper clearance has been found the tool
can be returned to service.
NOTE: Never turn out the adjustment screw more than
1/8 turn at a time without testing or completely remove
the adjustment screw. These actions will severely
damage both the feedwheel and gripper plug.
STRAP TENSION
Strap tension is controlled by turning the adjustment screw
(Key 98) as shown by arrow, in 1/4 increment turns
counter-clockwise to increase strap tension and clockwise
to reduce strap tension. Use the 4mm hex wrench
included with every new tool.
NOTE: Operating air pressure must be set between 85 and
90 psi (5.7-6.2 Bar). With accurately controlled air pressure
the tension will be uniform on all straps, provided the
operator allows the air motor to stall.
17
FEEDWHEEL ADJUSTMENT
SCREW LOCATION (ARROW)
TOOL ADJUSTMENTS, Continued
STRAP CUTTER
The VT strap cutter has two serrated cutting edges.
After the first edge has become dull or strap cut-off
becomes difficult the blade can be remounted to use
the second cutting edge. Once both edges have
become worn the blade should be replaced. Use the
instructions below to remount, install and adjust a
new cutter blade.
1. Remove the two mounting screws which secure
the air motor to the tool body. Remove the weld
motor from the tool by turning the motor counterclockwise to release the O-ring which seats on
the top of the motor.
NOTE: The small spring contained in the holder does not need to be removed to change
the cutter blade.
2. The cutter blade group of parts can now be removed from the tool. Continue to also remove
the cutter pin from the tool.
3. Remove the two smaller screws which mount the cutter blade to the holder. Rotate the cutter
blade to the new cutting edge and reinstall the mounting screws.
NOTE: If both cutting edges are worn replace the cutter blade at this point.
4. Reinstall the cutter group of parts back into the tool. Before installing the cutter pin inspect
the cutter holder movement within the tool.
A. The holder should move freely up and
down in the tool body. If the holder does
not move freely inspect the tool for debris
or damage.
NOTE: If the holder has been replaced
it may also be necessary to adjust the
clearance of the two cutter guides.
B. The holder should not be able to move
from side to side. Excessive side to side
clearance will result in poor strap cut-off. If
the holder does move side to side, loosen
the four mounting screws which secure
the side guides. Move the guides as
needed to obtain a 0.025mm to 0.127mm
(0.001"-0.005") clearance.
C. Tighten the mounting screws.
5. Once the cutter holder has been inspected and adjusted, continue to reinstall the remaining
parts in the order that they were removed.
6. Run a few test cycles on the tool to confirm that the strap cut-off performs properly.
18
NOTES:
1.
Install Key 41 (Bearing) into Key 42 (Clutch Sleeve) with lettered end of bearing on end
opposite of groove in clutch sleeve. Non-lettered end of bearing to installed flush with the
grooved end of clutch sleeve.
2.
For optimum tool performance, fill gear housing (Key 38) one-third full of Red Mobilith SHC
007 Grease (Signode Part No. 425239).
3.
Key numbers 39 (Clutch Spring) and 40 (Spring Seat) can be order together as Signode
Part Number 425631 (Spring/Seat Assembly).
4.
Key numbers 41 (Roller Clutch) and 42 (Clutch Sleeve) can be order together as Signode
Part Number 425632 (Clutch/Sleeve Assembly).
5.
Install Key 99 (Worm Gear) with the shoulder side facing the gear housing.
6.
Install Key 120 (Needle Bearing) flush with rear wall of
gear housing as shown in Figure “A”.
7.
Key numbers 124, 125, 126 and 127 can be order
together as Signode Part Number 426159.
8.
Install Key 125 (Needle Bearing) in to Key 127 (Worm
Gear) bottomed out against Key 126 (Spacer) as
shown in Figure “B”.
9.
Install Key 33 (Set Screw) flush with face of Key 26
(Wear Tab).
FIGURE - A
FIGURE - B
21
TROUBLESHOOTING
The following items are the most common types of tool malfunctions. For symptoms or remedies
not shown, contact your Signode service representative for additional information and details. The
following tool conditions are shown in this manual:
AIR SUPPLY
#1 - The air motor is frozen.
#2 - A leaking or sticking air valve.
#3 - The tool runs sluggishly.
TENSIONING
#4 - Feedwheel milling on strap and/or strap breaking.
#5 - The top strap is being properly tensioned but the tool does not hold the bottom strap.
#6 - The tool stops tensioning before maximum tension is reached (air motor continues to run).
WELDING
#7 - A poor weld identified by an incomplete area of weld.
#8 - Incomplete or no weld.
#9 - Strap is over welded.
#10 - Motor shut-off is sluggish.
#11 - Strap weld time is erratic.
#12 - Weld time is too long.
CUT-OFF ACTION
#13 - The cut-off has become difficult.
#14 - Weld strap is misaligned.
#1 CONDITION: The air motor is frozen.
CAUSE
REMEDY
The motor is dry, hindering it from providing
maximum performance.
Add several drops of oil into the motor through the
air inlet. Hook the tool up to air, depress and hold the
operating lever while gently tapping the motor with a
rubber mallet. Repeat this procedure several times if
necessary.
#2 CONDITION: Air valve leaking or sticking.
CAUSE
REMEDY
Worn, damaged or dirty O-rings on valve assemblies.
Clean and lubricate the valve assemblies and the
valve sleeve assembly. Replace the O-rings on the
valve assemblies if necessary.
27
TROUBLESHOOTING, Continued
#3 CONDITION: The tool runs sluggishly.
CAUSE
REMEDY
1.
The air filter-regulator-lubricator is
malfunctioning or is not properly maintained.
1A. Check the regulator to see that the correct air
pressure is getting to the tool.
1B. Check to see the filter unit is clean and
functioning properly.
1C. Examine the lubricator to see there is oil in the
bowl and that oil is seen dripping from the sight
dome as the tool operates. This assures the air
motor is being properly lubricated.
2.
The tool may run sluggishly due to a clogged or
dirty motor filter screen due to a lack of properly
filtered air supply.
2.
Remove the Hansen plug at the inlet to the air
motor and examine the filter screen in the filter
assembly and clean it if necessary.
3.
The tool may run sluggishly due to an improper
air motor adjustment or a clogged or dirty
vibrator assembly.
3.
Clean vibrator parts as needed. Inspect vibrator
eccentric for wear or damage. Replace as
required.
4.
The end plates, pinion teeth on the rotor and the
rotor blades are worn, dirty or rusted.
4.
Carefully remove the air motor from the tool and
disassemble it. If these parts are only dirty,
clean, thoroughly oil and reassemble. If they
are worn or rusted, replace them.
#4 CONDITION: Feedwheel milling on strap and/or strap breaking.
CAUSE
REMEDY
1.
Feedwheel is clogged with dirt or strap residue.
1.
Clean teeth on feedwheel with the cleaning
brush provided.
2.
Worn teeth on the feedwheel.
2.
Replace the feedwheel.
3.
Excessive or improperly set feedwheel to gripper
plug clearance.
3.
Adjust feedwheel gap as required.
#5 CONDITION: The top strap is being properly tensioned but the tool does not hold the
bottom strap.
CAUSE
REMEDY
1.
The gripper plug may be packed with dirt or strap
residue preventing the teeth from penetrating the
strap.
1.
Clean teeth on feedwheel with the cleaning
brush provided.
2.
Worn teeth on the gripper plug.
2.
Replace the worn plug. Since the feedwheel and
gripper plug are prevented from contacting one
another by an inside shoulder on each part, it is
not often these parts have to be replaced.
3.
The tension release lever is being held while
operating the tool.
3.
Review the operating instruction shown in this
manual.
28
#7 CONDITION: A poor weld identified by an incomplete area of weld.
CAUSE
REMEDY
Welding is achieved by a combination of vibration and
downward pressure of the upper gripper. Either a
restriction of motion or a reduction of downward
pressure will cause a poor weld.
Dismantle and clean the weld mechanism by brushing
away the strap residue or washing the entire unit in a
solvent. When a solvent is used it is imperative the
assembly be blown dry to remove all solvent. Check
for dry or worn bearings. Replace or lubricate as
required. If the tool has been used extensively,
examine the teeth on the upper and lower weld pads
for wear. Replace if worn.
#8 CONDITION: Incomplete or no weld.
CAUSE
REMEDY
1.
Improperly set weld time adjustment.
1.
Adjust weld time as required per instruction in
this manual.
2.
Worn teeth on upper or lower weld pads.
2.
Replace as required.
3.
Insufficient air supply pressure.
3.
Remedy as required.
4.
Worn o-ring on main piston.
4.
Replace as required.
#9 CONDITION: Strap is over welded.
CAUSE
REMEDY
Improper weld timing adjustment.
Decrease weld timing as needed.
#10 CONDITION: Motor shutoff appears sluggish.
CAUSE
REMEDY
1.
Air leakage in timing circuit.
1.
Check o-rings and pneumatic components for
leaks. Replace parts as required.
2.
Dirty or very dry pilot valve (Key 106).
2.
Remove, clean and lubricate the pilot valve
using air line oil or replace if needed.
3.
Dirty or very dry sealer valve stem (key 72).
3.
Remove valve stem and inspect o-rings for
damage. Replace o-rings as needed. Clean part
and lubricate with EP Accrolube grease.
29
TROUBLESHOOTING, Continued
#11 CONDITION: Strap weld time is erratic.
CAUSE
REMEDY
1.
Air leakage in timing circuit.
1.
Check o-rings and pneumatic components for
leaks. Replace parts as required.
2.
Dirty or very dry pilot valve (Key 106).
2.
Remove, clean and lubricate the pilot valve
using air line oil or replace if needed.
3.
Weld time flow control (Key 88) is contaminated
with debris or oil.
3.
Remove part and clean using dry compressed
air.
#12 CONDITION: Weld time is too long.
CAUSE
REMEDY
Too much oil in the air supply system of the tool.
Purge the tool of all excess oil.
#13 CONDITION: The cut-off has become difficult.
CAUSE
REMEDY
1.
Strap residue jamming cutter mechanism.
1.
Clean parts as required.
2.
Cutter blade worn or damaged adjustability.
2.
Replace as required.
#14 CONDITION: Welded strap is misaligned.
CAUSE
REMEDY
1.
The tool is not being operated properly.
1.
Review operating instruction shown in this
manual for proper operation of tool.
2.
Teeth of upper weld gripper (Key 62) or lower
weld gripper (Key 50) are damaged.
2.
Replace damaged parts as needed.
3.
Teeth of feedwheel (Key 47) or tension gripper
(Key 48) are damaged.
3.
Replace damaged parts as needed.
30
MAINTENANCE
TOOL
1. Clean the teeth on the feedwheel and the gripper plug with the special brush provided.
3. Periodically clean the tool with compressed air.
4. Disassemble, clean and lubricate the welding mechanism.
GEAR HOUSING
Periodically check the gear housing portion of the tool:
1. Remove the end cap from the front of the gear housing by removing the set screw and pulling
the end cap off.
2. Check for adequate lubrication and wear of the Spiroid worm gear and ring gear.
3. This portion of the tool should be one-third full of gear grease.
4. Reinstall the end cap.
31
32
OPTIONAL OVERHEAD SUSPENSION
To work effectively, your VT tool must be properly installed. This installation includes, in some
cases, proper suspension of the tool over the container to be strapped, and the proper placement
of a strapping dispenser to provide a continuous easy supply of strapping for the application. The
VT can be suspended in various operating positions by using the proper tool hanger and
hardware.
Review the illustrations below for the appropriate configuration for the tool application.
Applications are recommended to use an Overhead Tool Balancer as shown.
HORIZONTAL SEALING
(USING OPTIONAL
3-WAY HANGER)
TOP SEALING
VERTICAL SEALING
33
OPTIONAL 3-WAY TOOL HANGER
This option allows the operator to suspend the VT tool
from its side to allow for easier horizontal strapping
applications as well as top and side sealing applications.
The hanger replaces the standard VT tool hanger.
NOTE: Hanger is supplied with additional M5x16 socket
head cap screws for mounting the
hanger to the tool.
34
EU Declaration of Conformity
The Supply of Machinery (safety) Regulations
1992 (S.I. 1992/3073)
It is hereby declared that the undermentioned machinery has been designed and
constructed to comply with the health and safety requirements defined in EC Directive
89/392/EEC
Machine Supplier:
Signode, Division of ITW Ltd.
Queensway, Fforestfach
Swansea SA5 4ED
Machine Description: VT Series
Machine Type:
Pneumatic Combination Hand Strapping tool.
Provisions with which machine complies:
89/392/EEC, 91/368/EEC
Harmonized EuroNorms with which machine complies:
EN 292:1, EN 292:2, EN 294, EN 349
Technical Standards with which machine complies:
NA
Signature:
Date: 1 September 2005
(Peter Oseland)
35
SIGNODE
NEW TOOL WARRANTY
Signode Engineered Products Warrants that a new Signode strapping tool will operate per functional
specifications for a period of sixty (60) days after the date of shipment to the owner's place of business.
Normal wearing parts, as outlined in the Operation, Parts & Safety manual, are covered by a thirty (30) day
warranty unless, in Signode's judgement, these parts have been subjected to abnormal or extreme usage.
Signode's sole liability hereunder will be to repair or replace, without charge, F.O.B. Signode's Glenview,
Illinois plant, any tool which proves to not operate per functional specifications within the stated period.
Signode reserves the right to replace any tool which proves not to operate per functional specifications
with a new or like-new tool of the same model if in Signode's judgement such replacement is appropriate.
Any new replacement tool provided to an owner will carry a full sixty (60) day warranty. Any warranty
repaired tool or like-new replacement tool will carry a warranty for the balance of the time remaining on the
initial sixty (60) day warranty. This warranty will be extended to compensate for the time the tool is in
Signode's possession for warranty repairs.
This warranty is void as to any tool which has been: (I) subjected to mis-use, misapplication, accident,
damage, or repaired with other than genuine Signode replacement parts, (II) improperly maintained, or
adjusted, or damaged in transit or handling; (III) used with improperly filtered, unlubricated air or improper
strapping material, (IV) in Signode's opinion, altered or repaired in a way that affects or detracts from the
performance of the tool.
SIGNODE MAKES NO WARRANTY, EXPRESSED OR IMPLIED, RELATING TO MERCHANTABILITY,
FITNESS OR OTHERWISE EXCEPT AS STATED ABOVE AND SIGNODE'S LIABILITY AS ASSUMED ABOVE
IS IN LIEU OF ALL OTHERS ARISING OUT OF OR IN CONNECTION WITH THE USE AND PERFORMANCE
OF THE TOOL. IT IS EXPRESSLY UNDERSTOOD THAT SIGNODE SHALL IN NO EVENT BE LIABLE FOR
ANY INDIRECT OR CONSEQUENTIAL DAMAGES INCLUDING, BUT NOT LIMITED TO, DAMAGES WHICH
MAY ARISE FROM LOSS OF ANTICIPATED PROFITS OR PRODUCTION, SPOILAGE OF MATERIALS,
INCREASED COSTS OF OPERATION OR OTHERWISE.
Considerable effort has be made to ensure that this product conforms to our high quality standards.
However, should you experience any difficulties, please contact your Sales Representative providing
samples and the manufacturing code specified on the tool.
Thank you for your help.
SIGNODE ENGINEERED PRODUCTS
Hand Tool Division
3620 W. Lake Avenue, Glenview, Illinois 60025
© Copyright 2005, Signode 512154 Rev. 9/2005
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