Leister Varimat V User manual

1
LEISTER Varimat V
Hot Air Automatic Welding Machine
GB
OPERATING INSTRUCTIONS ®
LEISTER Varimat V
Automatic Overlap Welding
Machine
• For overlap welding of roofing
membranes made of PVC, PE,
ECB, EPDM, CSPE, and Modified
Bitumen for areas close to
edges and uneven surfaces.
• Overlap welding of foils and
coated materials. Width of wel-
ding seam 20, 40 mm.
LEISTER Varimat V
Automatic Bitumen Welding
Machine
For overlap welding of Modified
Bitumen sheet. Width of welding
seam 80, 100 or 120 mm.
APPLICATION
LEISTER Process Technologies, Riedstrasse, CH-6060 Sarnen/Switzerland
Tel. [phone] Fax [phone] www.leister.com [email protected]
Please read operating instructions carefully before
use and keep for further reference.

2
Incorrect use of the hot air tool can present a fire and
explosion hazard especially near combustable materi-
als and explosive gases.
The tool must be operated under supervision. The heat
can ignite flammable materials which are not in view.
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.
Do not touch the element housing and nozzle when hot
as they can cause burns. Allow the tool to cool down.
Do not point the hot air flow at people or animals.
Protect the tool from damp and wet.
FI
230
400
WARNING
CAUTION
Technical Data
230, 400 230, 400 
4600, 5700 4600, 6300
50 / 60 50 / 60
20 – 620 stepless 20 – 620 stepless
0,5 – 5 stepless 0,5 – 5 stepless
ca. 190 (2 weights) ca. 220 (2 weights)
50 – 100 50 – 100
67 67
640 x 430 x 330 640 x 430 x 330
33 with 5 m cable 35 with 5 m cable
Voltage V~
Power consumption W
Frequency Hz
Temperature °C
Drive m/min.
Welding pressure N
Air flow %
Emission level LpA (dB)
Size mm
Weight kg
Mains voltage cannot be switched over
Connect tool to a receptacle with protective earth
terminal. Any interruption of the protective conductor
inside or outside the tool is dangerous!
Line/mains extension cables must always have a pro-
tective ground conductor!
Danger! Unplug the tool before opening it as live com-
ponents and connections are exposed.
APPROVAL MARKS
Protection Class Ι

DESCRIPTION OF TOOLS LEISTER Varimat V
3
1
2
3
16
1
18
9
5
4
8
15
12
22
23
24
14
11
17
25
21
1. Cable to mains
2. Housing
3. Main switch
4. Key board
5. Display
6. Sensor
7. Locking screw
8. Hot air blower
9. Welding nozzle
10. Tool holder
11. Locking lever
12. Pendulum action roller
13. Adjustment screw for tracking
14. Track-alignment roller
15. Guide roller
16. Adjustable transport roller
17. Transport roller
18. Guide roller
19. Shift spring for transport roller
20. Gate
21. Scale for tool adjustment
22. Additional weight
23. End weight
24. Carrying handle
25. Socket head cap screw
26. Lower guide bar
27. Upper guide bar
28. Clamping lever guide bar
heigh adujstable
29. Cable holder
30. Round belt
31. Clamping lever guide bar
32. Sensor covering
12 30
13
19
20 10
9
12
12 Pendulum action roller
1. Retaining ring
2. Tension ring
3. Rubber buffer
4. Tappet casing
5. Rubber tyre
6. Rubber buffer
7. Tension ring
8. Tightening disk
9. Cylinder screw
23456789
32 7 6
28
31
27
26
29

DISPLAY OPTIONS LEISTER Varimat V
4
Main– Level
main switch (3) on
main switch (3) on
Control– Level +
–& &
1 3 5
2 4 6
1 3 5
2 4 6
Display of:
1. Welding speed ACTUAL value
2. Welding speed SET value
3. Temperature ACTUAL value
4. Temperature SET value
5. Voltage - ACTUAL value
6. Welded length - ACTUAL value
*Heating / Drive active
Display of:
1. Welding speed ACTUAL value
2. Welding speed Power consumption in % after start
3. Temperature ACTUAL value
4. Temperature Power consumption in % after start
5. Voltage ACTUAL value
6. Welded length ACTUAL value
Display 4 Drive reason for fault Action
100 % • mains under-voltage reduction of
welding speed
• high welding speed with check welding
large sudden overload procedure/machine
Display 2 Heating reason for fault Action
100 % • mains under-voltage reduction of airflow
100 % • heating element faulty repair
SET value
not achieved

FAULT FINDING ACTIONS LEISTER Varimat V
5
Automatic starter reason for fault
Drive motor does not start automatically after the nozzle has been positioned
• Sensor (6) set incorrectly
Action adjust Sensor
– Switch off main switch (3)
– Remove sensor covering (32)
–
Lower the hot air blower (8) and guide it to the left until it locks
– Locking lever (11) must click in
– Loosen locking screw for sensor (7)
– Push sensor (6) to tool holder (10)
IMPORTANT! Distance between tool holder and sensor > 0,2 – 0,5mm max.
– Tighten locking screw for sensor (7)
– Fix sensor covering (32)
–
Move the hot air blower (8) out until it locks and swivel up
– Make a functional test
If malfunction is still present, contact your Service Center.
Error 100/ 101/ 102 Measures
• Check blower (air must be flowing out of nozzle)
• If malfunction is still present, contact your Service Center
check the blower
3 8
32 7 6 11
12
10

Heating
Reset
Welded length
Cursor will blink
on the display
H
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. (SET value not achie-
ved, see airflow
).
Airflow
+
+
–
H
H
Drive
ON / OFF
SET value setting
–+
M
ON / OFF
SET value setting
–+
+&
H
6
WELDING PARAMETERS LEISTER Varimat V
Welding speed
Depending 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.
+–
H
2x
Important note:
During the heating-up process, the airflow is adjusted automatically
to 100%. Only after reaching the SET temperature, the pre-set airflow
in %, is taken over (element protection). If the SET temperature has
not been achieved, adjust the airflow to 80% before switching on the
heating element.
–+
M&+

OPERATION Overlap 20/40 mm LEISTER Varimat V
WELDING PARAMETERS Overlap 20/40 mm LEISTER Varimat V
Operating condition
• Attach strain relief of guide bar (26/27)
• Hang the mains cable (1) into the cable holder (29).
• Adjust the guide bar (27) with the clamping lever (28) to the desired height
• .Check the basic setting of the welding nozzle (9).
(ex works illustration A and C)
• Transport setting:
– Swivel the guide roller (18) upwards
– Release the transport roller (16) by raising the guide bar (27).
– Push the transport roller (16) by applying a little pressure to the shift spring (19)
to the left until it stops (illustration B).
– Position the hot air blower (8) by pulling the locking lever (11) and swivel it up
until it locks.
• Connect the tool to the mains
The voltage rating stated on the tool should
correspond to the mains voltage.
Illustration
B
Illustration A
Illustration
C
1–2 mm
40 – 50 mm
18 16 12
9
222
19
7
120N 155 N 190N
Illustration H
12 23
Welding pressure
• The welding pressure is transmitted to the
pendulum action roller (12).
• As necessary, the additional weights (22) and
the end weight (23) can be put on
(see illustration H).
1–2mm

Welding procedure
• Adjust welding parameter, see page 6.
• The welding temperature must be achieved (heating up time approx. 5 min).
•Do a test run.
• Pull the locking lever (11), lower the hot air blower (8) and position it between
the overlapped sheets until it stops.
If it does not start, see sensor adjustment, page 5.
The machine can be started manually with key
• The automatic welding machine is guided along the overlap with the guide
bar (27). Do not apply pressure to the guide bar (27) this could lead to
welding faults. Keep watching the guide roller (18) position.
• After welding, pull the locking lever (11), take the hot air blower (8) out
until it stops and swivel up until it locks.
• After completion of the welding work switch off the heater by pressing keys
and on keyboard (4) simultaneously, so that the welding nozzle (8)
cools down.
• Switch off main switch (3).
M
USAGE Overlap 20/40 mm LEISTER Varimat V
8
Tool positioning
• Tip up the Automatic Welding Machine by applying pressure to the guide bar
(27) and position it ready for welding.
• Release the transport roller (16) by lifting it with the guide bar (27).
• Push the transport roller (16) to the left until it stops by applying light pressure
to the shift spring (19).
• Swivel the guide roller (18) down.
• The guide roller (18) should be set parallel to the edge of the pendulum
action roller (12) (see illustration E)
• Do a test run
• To correct the tracking , adjust the adjustment screw for tracking (13) (see illu-
stration F and G, and the function notes on the automatic welding machine).
+H
Illustration E
12
18
Illustration F Illustration G
1212 1313

OPERATION Overlap 80/100/120 mm LEISTER Varimat V
WELDING PARAMETERS Overlap 80/100/120 mm LEISTER Varimat V
Operating condition
• Attach the guide bar (26/27).
• Hang strain relief of mains cable (1) in the cable holder (29).
• Adjust the guide bar (27) with the clamping lever (28) to the desired height
• Check the basic setting of the welding nozzle (9). (ex works detail A and C).
• Transport setting:
– Swivel the guide roller (18) upwards.
– Release the transport roller (16) by lifting up with the guide bar (27).
– Push the transport roller (16) by applying a little pressure to the shift spring (19)
to the left until it stops (illustration B).
– Position the hot air blower (8) by pulling the locking lever (11) and swivel it up
until it locks.
• The basic adjustment of the welding nozzle (9)
is done at the factory (Illustration A and C)
• Connect the tool to the mains.
The voltage rating stated on the tool should
correspond to the mains voltage.
Illustration
B
Illustration
C
1–2 mm
70 – 85mm
18 16 12
9
222
19
140N 175 N 210N
Illustration H
12 23
Welding pressure
• The welding pressure is transmitted to the
pendulum action roller (12).
• As necessary, the additional weights (22)
and the end weight (23) can be put on
(see illustration H).
Illustration A
9
1–2mm

USAGE Overlap 80/100/120 mm LEISTER Varimat V
10
Welding procedure
• Adjust welding parameters, see page 6.
• The welding temperature must be achieved (heating up time approx. 5 min.).
If the temperature is not achieved, reduce the airflow.
•Do a test run.
• Pull the locking lever (11), lower the hot air blower (8) and position it between
the overlapped sheets until it stops. The drive motor will start automatically.
If it does not start, see sensor adjustment, page 5.
The machine can be started manually by pressing key .
• The automatic welding machine is guided along the overlap with the guide
bar (27). Do not apply pressure to the guide bar (27) this could lead to welding
faults. Keep watching the guide roller (18) position.
• After welding, pull the locking lever (11), take the hot air blower (8) out until it
stops and swivel up until it locks.
• When the welding is completed switch off heater with the and keys
on the keyboard (4), so that the welding nozzle (8) cools down.
• Switch off main switch (3).
Tool positioning
• Tip up the Automatic Welding Machine by applying pressure to the guide bar
(27) and position it ready for welding.
• Release the transport roller (16) by lifting it with the guide bar (27).
• Push the transport roller (16) to the left until it stops by applying light pressure
to the shift spring (19).
• Swivel the guide roller (18) down.
•The guide roller (18) should be set parallel to the edge of the pendulum
action roller (12) (see illustration E).
• Do a test run
• To correct the tracking, adjust the adjustment screw for tracking (13) (see
illustration F and G, and the function notes on the automatic welding
machine).
Illustration E
12
18
Illustration F Illustration G
1212 1313
H
+
M