Leister Astro Manuale utente

LEISTER Astro

Automatic Wedge Welding Machine

Please read operating instructions carefully before use

and keep it for further reference.

OPERATING INSTRUCTIONS ®

LEISTER Process Technologies, Riedstrasse, CH-6060 Sarnen/Switzerland

Tel. +41 41 662 74 74 Fax +41 41 662 74 16

www.leister.com sales@leister.com

The LEISTER Astro is an automatic wedge-welding machine for overlap

welding of geomembrane liners in earthwork and civil engineering.

•Thermoplastic geomembrane liners

High-density polyethylene PE-HD

Low density polyethylene PE-LD

Chlorinated polyethylene PE-C

Polypropylene PP

DVS: German Welding Society for welding

APPLICATION

•Type of seam

Welding seams are pro-

duced in accordance with

DVS 2225 part I

Other dimensions are pos-

sible on request.

LEISTER SALES & SERVICE CENTER CHINA , 20H Building No.1 515 Yishan Road ,Shanghai, PRC

Tel. +86 021 34141786 Fax. +86 021 64360767

http://www.plasticwelding.cn E-mail: [email protected]

TECHNICAL DATA

120, 200, 230 ★

50 / 60

1800

max. 420/788

max. 1500/337

0,8– 5,0/2.6 - 16.5

max. 150/5.9

1,5 – 3,0/60 - 120

475 × 355 × 315 with carrying handle /

guide handle (12)

23/50

Voltage V~

Frequency Hz

Power consumption W

Temperature °C/°F

Welding pressure N/Ibs

Drive m/min./feet

Overlap width mm/Inch

Thickness of material mm/mil

Noise emission level

LpA (dB)

Size L×W×Hmm

Weight kg/lbs

Protection class Ι

★ mains voltage is

not reversible

Danger! Unplug the tool before opening it as live com-

ponents and connections are exposed.

Incorrect use of the hot wedge tool can present a fire

and explosion hazard especially near combustible

materials and explosive gases.

Do not touch the element housing and wedge when

hot as they can cause burns. Allow the tool to cool

down. Do not point the hot air flow in the direction of

people or animals.

WARNING

The tool must be operated under supervision. Radiant

heat from the hot wedge can ignite flammable

materials.

For personal protection, we strongly recommend the

tool be connected to an RCCB (Residual Current Circuit

Breaker) before using it on construction sites.

The voltage rating stated on the tool should correspond

to the mains voltage.

Protect the tool from damp and wet.

120

230

CAUTION

Connect the tool to a socket outlet with protective

earth conductor. Any interruption of the protective

earth conductor within or outside the tool is danger-

ous! Use only extensions cables with a protective

earth conductor!

APPROVAL MARKS

CCA certified

Seam thickness reduction = A – B

A : Thickness of the upper and lower membrane

B: Thickness of the welded seam

C : Welded section 1

D : Welded section 2

E : Test channel

C D

Wedge

Welding direction

upper geomem-

brane liner

Pinch roller

Lower geo-

membrane liner

Cross-section diagram of hot wedge system

Rear guide roller

Lower drive /

pressure roller

Upper drive /

pressure roller

Front guide roller

Fastening screw

for hot wedge

Cross sectional diagram of an overlap weld

•Welding pressure → infinitely variable (steplessly adjustable). The welding

pressure is transmitted via a toggle lever to the pressure rollers. The swivel

head guarantees the equalization of the pressure to both welded sections

(C and D) as well as on a welded seam without test channel.

This allows T-joints to be welded easily. During the welding process the

pressure adjusts itself linearly to the change in material thickness of the

geomembrane liners.

•Drive → The welding speed is adjustable and electronically controlled in

steps of 0.1 m/min / feet. Digital display of SET and ACTUAL values. The

power transmission works through a three stage planetary gear.

•Heating system → The hot air temperature is steplessly adjustable and eletron-

ically controlled. It is a floating hot wedge.

FUNCTIONAL DESCRIPTION LEISTER Astro

DESCRIPTION OF MACHINE LEISTER Astro

Frontal view

Side view

157

201981813 25 16

Welding pressure

Engage and position the auto-

matic welding machine onto

the material to be welded.

Insert the two geomembranes

liners or films about 5mm at the

back of the machine. Pull the

lever (9). The hot wedge is

automatically pushed forward.

Push and hold down the locking

spring (11). Turn the adjustment

screw for welding pressure (10)

until the drive/pressure rollers

(20/21) slightly touch the materi

to be welded. Let go

the locking

spring (11) and release the tension

of the lever (9).

Keep pushing the locking

spring

of the adjustment screw (11).

Adjust the welding pressure by

turning the corresponding

adjustment screw (10) accord-

ing to illustration A and let go

the locking spring (11) at the

requested welding pressure.

Warning:

If the maximum welding pressu

of 1500N is exceeded mechani-

cal damage may occur.

DESCRIPTION OF MACHINE LEISTER Astro

1. Mains cable

2. Cable clip

3. Housing of electronics

4. Main switch

5. Display

6. Keyboard

7. Motor/ Drive

8. Hot wedge

9. Lever

10. Adjustment screw for welding

pressure

11. Locking spring of adjustment screw

12. Carrying handle / Guide handle

13. Front wheel

14. Back wheel

15. Foil guide

16. Cable conduit for hot wedge

17. Pinch roller

18. Front guide roller

19. Rear guide roller

20. Lower drive/pressure roller

21. Upper drive/pressure roller

22. Adjustment screw for swivel

head

23. Chain guard of lower part

24. Chain guard of tension arm

25. Chain guard of gear case

WELDING PARAMETER LEISTER Astro

Illustration A

Welding pressure

Screen

10 11

max. welding pressure 1000 N

[N]

375

500

625

750

875

1000

1125

1250

1375

1500

250

125

123456123456

ca. 5 mm

Wedge

Folie

Heating cursor will blink on

the display

Welding temperature

Set the welding temperature with the , keys. The temperature is

dependent on the material and the ambient temperature. The in-put SET value

will be shown on the display. Switch on the heating by pressing the and

keys simultaneously. Heating up time approx. 5 mins.

–

Drive

ON/OFF

SET value setting

–+

ON/OFF

SET value setting

–+

WELDING LEISTER Astro

Welding preparation

–

Laying

Width of overlap is about 80mm to 130mm

Geomembrane liners must be clean between

the overlap as well as above and below.

–

Mains supply

At least 3kW (generator) supplied with an RCCB

–

Cable to mains

A minimum cable cross section in accordance

with the table.

200 – 230 V~ to 50 m 3x1,0 mm2

to 100 m 3x2,5 mm2

120 V~ to 50 m 3x1,5 mm2

to 100 m 3x2,5 mm2

WELDING PARAMETERS LEISTER Astro

Welding Speed

According on the film or geomembrane liner and the influence of the weather,

set the welding speed with the keys. The in-put SET value will be shown

on the display.

+–

Display (2) Drive reason for fault

100 % • mains under-voltage

100 % or <• overlap of the geomembrane liner too wide

100 % or <• dirt on the drive rollers (20/21)

100 % or <• max. welding pressure (1500 N) has been exceeded

100 % or <• high welding speed with large sudden overload

(ie anchoring trench, T-joints....)

Display (4) Heating reason for fault after heating up time

100 % • mains under-voltage

WELDING LEISTER Astro

Operating conditions

•Connect the hot wedge-welding machine to the mains

•Start the machine with Main- or Control Level

If malfunction does not disappear, contact service center

Main – Level

–

& &

<Overload indication

Check the welding process and identify faults by means of the display of power

consumption.

1. Speed ACTUAL value

2. Speed SET value

3. Temperature ACTUAL value

4. Temperature SET value

5. Voltage display ACTUAL value

1. Speed ACTUAL value

2. Speed SET value

3. Temperature ACTUAL value

4. Temperature SET value

5. Voltage display ACTUAL value

Main Switch (4) ON

Control – Level

Heating / Drive active

1 3 5

2 4

Illustration B

Max. frontal width of

overlap.

22mm

24.5mm

Dim. of pressure roller 50mm

Dim. of pressure roller 45mm

Welding procedure

•Check: – Drive/ Pressure rollers (20/21) as well as the hot wedge (8) must

be clean before engaging into the geomembrane liner or film.

– Cable length/Cable guide.

•Guide and position the automatic welding machine into the over-lapped

geomembrane liner or film.

•Adjust welding parameters, see page 5/6.

•The welding temperature must be achieved.

•Switch on drive motor with key on keyboard (6).

•Pull the lever (9).

•Check the welded seam (wash/seam thickness reduction). As required,

adjust the welding speed with keys on keyboard (6).

•The automatic welding machine is guided along the overlap with the

carrying handle/guide handle (12), so that the frontal width of the overlap

is kept within the 22mm zone (see illustration B).

Beginning of welding process

•Release the tension lever (9) 1 cm before the end of the welded seam.

•Switch off the drive motor with key on the keyboard (6). Switch off the

heating by pressing the and keys on the keyboard (6) simultaneously.

End of welding process

WELDING LEISTER Astro

–

H+

Adjusting of the guide rollers for the requested material thickness

•Engage the automatic wedge-welding machine on the geomembrane liner

or film to be welded.

• Stretch the lever (9)

• Loosen the hexagon cap screw of the rear guide roller (19).

•The distance between the hot wedge (8) and the rear guide roller (19) should

be the thickness of the material and the sharp tongue of the wedge should lie

centrically to the pressure rollers (20/21).

• Tighten the hexagon cap screw of the rear guide roller (19).

• Loosen the hexagon cap screw of the front guide roller (18).

•The distance between hot wedge (8) and front guide roller (18) should be

about 1 mm.

• Tighten the hexagon cap screw of the front guide roller (18).

ADJUSTING THE HOT WEDGE LEISTER Astro

Cross-section diagram of hot wedge system

The LEISTER Astro is suitable to manufacture overlap-welded seams in different

fields of applications. They differ in the width of the welded seam as well as the

width of the test channel. Also welded seams without test channel can be

manufactured. In order to implement these different overlap seams, the appro-

priate drive/pressure rollers have to be installed.

Dismantling of the drive/pressure rollers, sequence 1 – 12

Assembly of the drive/pressure rollers, reverse order 12 – 1

1. Countersunk screw M3×6

2. Protection sheet swivel head

3. Socket head screw M4×8

4. Washer 4.2×25

5. Slide roller

6. Set screw M5×12

7. Shaft 8×118.5

8. Shaft retaining ring

9. Distance disk 20×32×0.5

10. Drive/pressure roller

11. Woodruff key 5×6.5

12. Upper drive shaft complete

12 11

CHANGEOVER OF UPPER DRIVE/PRESSURE ROLLER LEISTER Astro

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