SAFETY INSTRUCTIONS
Read these safety instructions before operating or servicing the machine.
1.
Ensure the machine is plugged into a properly rated electrical socket.
2.
Wear eye or face, and hand protection if necessary. Do
not wear loose clothing.
3.
Keep hands or other parts of the body away from the strap chute area during operation or you may become pinched during strap tensioning.
4.
The heater plate is very hot, do not touch or burns will result.
5.
Do not insert strap while there is not a package on the roller table.
6.
Do not substitute any electrical parts with of those a lower rating.
7.
Shut off all power to the machine before servicing.
8.
Do not use water or steam to clean the machine.

TABLE OF CONTENTS
Introduction —— —— —— —— —— ——
1
Machine Exterior —— —— —— —— ——
2
Specifications —— —— —— —— —— —
3
Operation
1. Loading the strap coil —— —— —— —— ——
2. Power connection —— —— —— ——
5
3. Threading and feeding the strap —— ——
6
4. Strapping —— —— —— —— ——
7
5. Switches —— —— —— —— ——
8
Maintenance —— —— —— —— —— —
9
Troubleshooting
1. Start-Up failure —— —— —— ——
10
2. Holding and welding failure —— ——
11
3. Feeding and tensioning failure —— ——
12
4. Other failures —— —— —— —— —
12
Parts list and Exploded views —— —— —— —
13 – 14
Electrical schematic —— —— —— —— ——
25

INTRODUCTION
This manual contains safety, operating, and maintenance instructions for the STS-1500
Semiautomatic Machine. This model is designed to strap packages with maching grade polypropylene plastic strapping.
A detailed description of additional systems and specific components follows:
1. Cabinet components
2. Reel unit
The dispenser supplies strapping material to the strapping head. A friction brake is provided to limit over-run of strap.
3. Electrical components
Contains system electrical controls parts: transformer, motors, circuit board, micro-switches, fans, and Fuses.
4. Sealer unit
The sealer unit is the primary unit of the machine. It can performs the feeding, holding, back feeding, tensioning and welding functions.
6. Heater blade
The strap ends are welded by means of
“hot-knife” sealing process.
7. Operator controls
The operator controls consists of switches, buttons, knobs to manually adjust and control the strapping process

Fig 1. the major components the sealer unit are shown in detail.
Strap Separator
Holding Gripper
Slide Plate
Welding Press
End Gripper
Adjustable
Guide
Feed Idler
Roller
Tension
Feed
Roller
Roller Tension
Trip Guide
Timing
Cam (6)
Gripper / Timing
Gearmotor
Holding
Gripper
Cam
Slide
Plate
Cam
Welding
Press
Cam
End
Gripper
Cam
Heater
Cam
Timing
Cam (7)
Feed
Roller
Cam (8)
Strap
Guides
Fixed
Guide
Not Shown: Feed & Tension Gearmotor
Heater Plate

SPECIFICATIONS
NO
1-1
1-2
1-3
1-4
1-5
1-6
DESCRIPTION
LENGTH
DIMENSION WIDTH
HEIGHT
SEALING METHOD
STRAP WIDTH
TENSION
MACHINE WEIGHT
ACOUSTIC NOISE
Please note the power supply of your machine and connect power correctly.
Power Supply
Voltage: 120V60Hz
Power consumption: 155W
REMARKS
35”
23”
63”
HEAT SEAL
(1/4”-5/8”) 5-15mm
6-120 lbs.
180lbs.
60dB(A)

OPERATION
Ⅰ - Loading the strap coil
[ STEPS ]
1.
Adjusting the coil rests according to the strap coil ID. The machine accepts 8”, 9”, and
11” ID’s x 6”-8” wide cores.
2.
Set the strap coil on the coil rests ensuring the strap
Will feed in the direction indicated by the arrow.
3.
Tight the thrust nut (3) until the reel plate (2) firmly compresses the side of the strap coil.
Coil rest strap coil
FIGURE 3: LOADING THE STRAP COIL
4

OPERATION
II – Power Connection
[STEPS]
1.
Plug the cord into a 120V power socket. Do not use extension cords.
2.
Turn the power switch on.
When the power switch is ON.
--- the power lamp is illuminated.
--- heating blade starts warming
--- smoke fan rotates.
If the machine is powered off accidentally
before a cycle is complete, press the reset
button to reset and “home” the machine. control panel
Power Switch Feed
FIGURE 4: POWERING UP THE
SYSTEM
5

OPERATION
III – Threading and feeding the strap
Refer to Figure and proceed as follows:
[STEPS]
1.
Pull about 3 feet (1M) of strap from the coil.
2.
Thread the strap through the guide roller bracket (A) , the brake roller (B), and transition rollers
(C) and (D)
3.
Insert the strap end into the opening and between the feed wheels (1) and (2).
4.
Press the feed switch to feed the strap into the strapping unit.
FIGURE 5:
THREADING AND FEEDING THE STRAP
6

OPERATION
Ⅳ – Strapping
[STEPS]
1.
Put package on the roller table. The package must be as close to the seal position as possible. (see the figure to the right)
2.
Press the feed switch to dispense a length of strap, the strap will through the band way automatic.
3.
Wrap the strap end around the package, and ensure the strap is not twisted. If the strap is not long enough, just press the feed switch to feed more.
4.
Insert the strap end into the entry chute.
When the strap end contacts the actuator/micro-switch (LS4) under the seal plate, the machine begins the strapping cycle.
NOTE: Adjustment of the max tensioning strength
↑ Increase the max tension strength
↓ Decrease the max tension strength
CAUTION:
A strange sound may be heard when the Tension
Adjustment is set at too strong position.
The sound is caused by the Feed Roller slipping on the strap surface.
The Feed Roll will wear out prematurely if the machine is operated under above condition for extended periods of time.
FIGURE 6: STRAPPING A PACKAGE
FIGURE 7:
ADJUSTMENT OF THE MAX TENSION
STRENGTH

(1) CONTROL PANEL
1. Feed length adjustment knob
-- Turn the knob clockwise to increase the automatic feed strap feed length.
2. Tension adjustment knob
-- Turn the knob clockwise increase the length of time of the tension cycle
3. Reset switch
-- When pushed, cam assembly rotates to return the grippers to home position
4. Feed / Back feed switch
-- When pushed, additional pushed strap is fed out into the strap channel. Strap feed will continue as long as the button is pushed.
(2) ADDITIONAL SWITCHES
1. Temperature Adjustment
-- Turn the knob clockwise to increase the heater temperature. Normal settings are 4-6.
2. Jog switch
-- The jog switch momentarily rotates the cam assembly. This is used for maintenance when oiling components and machine troubleshooting.
3. Back feed switch
4. Cooling timer
-- Higher strap tension requires longer times for the weld to cool or it may fail. It is recommended to keep the cooling timer knob in the highest setting.
Tension
Adjustment knob min
Jog switch
Power switch max
Reset
Feed
Feeding Length
Adjustment knob long
Temperature
Adjustment
Cooling timer
Top of the electrical box low short high
8

MAINTENANCE
!
BEFORE SERVICING MACHINE
Wear safety glasses with side shields which conform to ANS Standard Z87. 1.
Failure to wear safety glasses could result in severe personal injury or blindness.
●
PROTECT YOUR EYES
Only trained personnel should service machine.
● Unless specified, shut
off and disconnect all
electrical power.
● Follow all service instructions.
●
●
●
Make sure the hot-knife blade is cool before servicing
Use the correct tools.
Never adjust, repair or oil moving machinery.
READ GENERAL SAFETY
INSTRUCTIONS, PAGE 2
OF THIS MANUAL
GENERAL. Periodic checks of the drive belt should be made to prevent worn out or stretched belts causing poor tension and feed performance.
LUBRICATION. Make sure the machine is clean before applying lubricants to the points shown in the figure below. Note: Use a brush or compressed air to remove strap dust and debris before lubricating.
.
Apply light machine oil to these parts at the points indicated in follow figure.
(top slide, guide plates, welding clamp, end gripper and holding gripper) oil oil oil
FIGURE 11: LUBRICATION POINTS
Note: The following parts should NEVER be lubricated:
1.
Belts and pulleys
2.
Roller assemblies

TROUBLE SHOOTING
I –Start-Up Failure
1. Symptom: The power lamp does not illuminate even if the Power switch is turned on.
Cause: 1. Power cord loose in wall socket or damaged.
2.The fuses are blown.
Remedy: 1. Inspect the cord, plug, & socket.
2.Replace the fuses.
2. Symptom: The cams rotates & grippers cycle immediately after turning on the power switch.
Cause: 1. Cam is not at home position.
Remedy: 1. It is not a problem. Power was accidentally turned off before a cycle was completed.
10

TROUBLE SHOOTING
Ⅱ - Strap holding and welding Failure
1.
Symptom: poor strap weld.
Cause: 1. Hot-knife temperature is too high or too low.
2. The press spring of arm is broken or becomes short.
3. Fan motor is stopped. (dusts on the fan or poor contact of connector)
4. The heater plate is not fully heated as it is immediately after turning on the power.
Remedy: 1. Adjust the hot-knife temperature and seal cooling timer, Details in operating instructions section.
2. Replace the press spring.
3. Clean the Fan.
4. Wait for about 2 minutes.
2. Symptom: The machine will not complete cut-off.
Cause: 1. Worn welding clamp or cutting surface on welding clamp is dull.
2. Clearance between welding clamp and end holding gripper is too great.
Remedy: 1. Replace new welding clamp.
2. Replace springs. The clearance should not exceed 0.02mm.
0.02mm
3. Symptom: Strap pulls from sealing unit before seal and cut-off.
Cause: 1. Worn holding gripper.
2. The screws in the supporters that hold the slide plate are loose.
3. Slide plate worn
Remedy: 1. Replace holding gripper.
2. Tighten the screws.
3. Replace the slide plate. holding gripper welding clamp end holding gripper

TROUBLE SHOOTING
Ⅲ –Feeding and tensioning Failure
1.
Symptom: The strap is wrapped around the package, but the machine does not go to the next step.
Cause: 1.Motor is locked.(supply voltage is too low or strap tension is too high)
2.If motor is running continuously, LS-3 is not getting tripped when strap under tension.
Remedy: 1.Supply proper voltage, adjust tension setting.
2.Adjust or replace LS-3
2.
Symptom: The strap is not fed after the strapping cycle.
Cause: Strap is wrapped around the supply reel.
Remedy: Cut the strap free and re-thread according to the diagram.
3.
Symptom: Strap can’t feed because the grippers are blocking the feed path
Cause: The grippers are not in the home position.
Remedy: Press the reset button to return the system to the home position.
Ⅳ –Other Failures
1. Symptom: The machine does not start even if Strap is inserted to the entry chute.
Cause: 1. LS1 (start switch) is not turned on.
Remedy: 1. Repair the actuator attached to the strap separator (under the slide plate).
Cause: The strap twisted so “curl” direction is backwards. The strap is getting hung up before reaching the actuator.
Remedy: Untwist strap. Ensure strap is able to pass smoothly from the entry chute to reach the actuator.