LESITE LST900 Manual de usuario

Lesite Technology

LST900/900D

Hot Wedge Welder

Manual

LESITE

LST900/900D EN

Please read this manual carefully before using this machine,

and keep it for future reference.

This machine adopts an advanced hot wedge structure,which has better heating

efficiency and faster welding speed.It specially for welding 1.0mm-3.0mm

HDPE、LDPE、PP、TPO、PVC

Application

Precautions

- Solid Waste Lanfills - Chemical Mining

- Sewage Treatment - Water Conservancy

- Anti-seepage Project - Aquacuture

Please confirm that the machine is turned off and unplugged

before disassembling the welding machine, so as not to be

injured by live wires or components inside the machine.

The welding machine generates high temperature and high

heat, which may cause fire or explosion when used incorrectly,

especially when it is close to combustible materials or explosive gas.

Please do not touch the hot wedge (during welding work or when the

welding machine has not completely cooled down) so as not to burn.

The power supply voltage must match the rated voltage

marked on the welding machine and be reliably grounded. Connect the

welding machine to a socket with a protective ground conductor.

In order to ensure the safety of the operators and the reliable

operation of the equipment, the power supply at the construction site

must be equipped with a regulated power supply and a leakage

protector.

The welding machine must be operated under the correct control of the

operator, otherwise it may cause combustion or explosion due to

high temperature.

It is strictly forbidden to use the welding machine in water or muddy

ground, avoid soaking, rain or damp.

LESITE

Parameter

Model LST900

Rated Voltage

Frequency

Power

Welding Speed

Heating Temperature

Welding Pressure

Thickness Welded

Overlap Width

Seam Width

Seam Strength

Net Weight

Digital Display

Certificate

Warranty

230 V / 120 V

50 / 60 Hz

1800 W / 1650 W

1 - 5 m/min

50 - 450 ℃

100-1000N

1.0 mm - 3.0 mm （Single Layer）

12 cm

15 mm *2 ，Interior Cavity 15mm

≥ 85 % Material

13.0 Kg

Temperature

One Year

Model LST900D

LST900/900D EN

LESITE

Rated Voltage

Frequency

Power

Welding Speed

Heating Temperature

Welding Pressure

Thickness Welded

Overlap Width

Seam Width

Seam Strength

Net Weight

Digital Display

Certificate

Warranty

230 V / 120 V

50 / 60 Hz

1800 W / 1650 W

1 - 5 m/min

50 - 450 ℃

100-1000N

1.0 mm - 3.0 mm （Single Layer）

12 cm

15 mm *2 ，Interior Cavity 15mm

≥ 85 % Material

13.0 Kg

Temperature and Speed

One Year

LST900 Main Parts

LST900/900D EN

LESITE

1、Pressure Handle 2、Operation Handle 3、Control Box

4、 Hot Wedge 5、Pressure Roller 6、Creeping Wheel

7、Swing Head 8、Pressure Adjustment

LST900 Control Panel

Steps for Machine On/Off

9、Temperature Controller 10、Power Fuse

11、Power Switch 12、 Motor Fuse 13、Motor Switch

14、Voltmeter 15、 Speed Control Knob

LST900/900D EN

LESITE

91110

14 15

1312

1、Connect the power supply, lift up the pressure handle (1) and the pressure roller (5) to

separate automatically, and press the power on/off switch(11)

2、Check whether the voltage value displayed on the voltmeter (14) is normal

3、Turn on the temperature controller (9), set to the temperature required for welding, and

wait for the temperature to reach the preset value

4、Turn on the motor switch (13) and set the speed control knob (15) to the required figure

5、Place the welding machine and insert the membrane layers

6、Put down the pressure handle（1) ，the machine starts to move and weld

7、Keep observing the welding trail and the position of the upperlayer and lower

layer sat any time to adjustincase of deviation

8、After finishing welding, lift up the pressure handle (1), and move the machine away

from the welding position

9、Turn off the motor switch (13), turn off the temperature controller (9), the hot wedge

stops heating

10、Turn off the power switch (11)

1. Welding temperature：

Press the buttons on the panel to set the required welding temperature ,

which depends on the weldiing material and ambient temperature. The LCD screen will

display the preset temperature and the current actual temperature.

2. Welding speed：

Press the buttons on the panel to set the required welding speed,which

matchs the welding temperature.The LCD screen will display the preset speed and the

current actual speed.

3.Motor is on：

Press the motor moves

● This machine has a parameter storage memory function that the welding machine will

automatically use the last parameters without resetting the parameters when the machine

is turned on next time.

16、Power Switch 17、Temperature Rise Knob

18、Temperature Drop Knob 19、Speed Increase Knob

20、Speed Down Knob 21、Motor Switch

22、Power Fuse 23、Welding Temperature Display

24、Welding Speed Display 25、Motor Fuse

LST900D Control Panel

LST900/900D EN

LESITE

16 17 18 19 20 21

22 23 24 25

CT 016°C

ST - OFF

CV: 0M

SV: 5.0M

LST900D Switching Steps

LST900/900D EN

LESITE

4、Turn on the motor switch (21), and turn the speed knobs (19) (20) to set the required

welding speed

(the LCD screen displays as shown in Drawing 3.), then insert the membrane layers after

placing the machine

5、Put down the pressure handle（1) ，the machine starts to move and weld

6、Keep observing the welding trail and the position of the upper layer and lower layer at

any time to adjust in case of deviation

7、After finishing welding, lift up the pressure handle (1),move the machine away from the

welding position

8、Turn off the motor switch（21），press the temperature rise knob （17）and the

temperature drop knob at the same time（18）(As shown in drawing 4)，or turn the

temprature drop knob to “OFF”，the hot wedge will stop heating

9、Turn off the power switch

Current Temperature

Preset Temperature

Current Speed

Drawing 1

Drawing 2

Drawing 3

Drawing 4

Preset Speed

Current Speed

Preset Speed

Current Temperature

Preset Temperature

Current Speed

Preset Speed

Current Temperature Current Speed

Preset Speed

1、Connect the power supply, lift up the pressure handle (1) and the pressure roller (5)

to separate automatically

2、Turn on the power switch (16), the LCD screen displays as shown in drawing 1 While

the hot wedge has not started to heat up

3、Turn the temperature rise knob (17) so the LCD screen displays as shown in drawing 2

While the hot wedge starts to heat until the actual temperature is equal to the preset

temperature

Fault & Solutions

LST900/900D EN

LESITE

Fault

Screen shows

nothing

Power failure or low voltage Check the voltage and power wire

Replace fuse 15APower fuse has blown

Power switch doesn't work Replace the power switch

Speed knob can't

be adjusted

or the motor

moves at a

abnormal speed

Replace the motorMotor doesn't work

Drive board fuse has blown Replace the drive board fuse

Replace the speed knobSpeed knob doesn't work

Sensor can't detect the data

Drive board doesn't work Replace the drive board

Replace the photo sensor board

and sensor wire

Hot wedge

doesn't heat

Replace the heating tubesHeating tubes do not work

Hot wedge doesn't work

Drive board doesn't work Replace the drive board

Replace the hot wedge

Replace the drive boardDrive board doesn't work

Motor doesn't

move

Motor fuse has blown Replace fuse 1A

Replace the power switchPower switch doesn't work

Causes Solutions

LST900/900D EN

LESITE

Fault & Solutions

Fault

Hot wedge

burned

Thermocouple failure Replace the thermocouple

Replace the drive boardDrive board doesn't work

Wires "+" and "-" of

thermocouple were

connected wrongly Connect correctly

Shows on display:

Mosaicgarbled

Press two buttons at the same

time so that it heats

Stop heating

Change the display screen

or board

Display screen or board

doesn't work

Shows on diplay

“thermoc-ouple

ERR”

Shows on diplay

“CT:016℃

ST：Pause”

No thermocouple Check whether the thermocouple

wire in the display board is off

Replace the thermocoupleThermocouple burned

Causes Solutions

LST900/900D Nameplate

Maintenance

LST900/900D EN

LESITE

Do clean the hot wedge and pressure rollers after welding

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