Telwin DIGITAL CAR SPOTTER 5500 Bedienungsanleitung Seite 7

10.
Indicates that impulse spot welding has been activated (only for pneumatic
clamps).
11.
Indicates that a "manual" clamp, not a "pneumatic" one, is being used.
12.
Indicates that the clamp being used is energised.
indicate double tip clamp,
activated using the Studder gun.
Is the thickness of the sheet to be welded.
Indicates that the machine is being thermostatically protected.
18.
Indicates that the hot stapler is being used to weld plastic parts.
19.
Indicates the measurement unit of the metal sheet thickness .
a) Thermostatic safeguard:
Intervenes if the spot welding machine overheats because the cooling liquid is
AL1 = machine thermal alarm.
AL2 = clamp, studder thermal alarm.
EFFECT: current blocked (welding inhibited).
RESET: manual (use the "START" push-button when the permitted temperature
limits are reached - the [symbol] icon switches off).
b) Over and under voltage protection
The intervention is signalled on the display by AL 3 = overvoltage alarm and by AL
4 = undervoltage alarm.
EFFECT: current blocked (welding inhibited).
RESET: manual (use the "START" push-button).
c) "START" push-button (Fig. C-5).
This push-button must be pressed to control welding in each of the following
conditions:
- when the master switch is switched off (pos "O" => pos "I");
- each time the safety/protection devices cut in;
- after the power supply (electricity and compressed air) has been returned after
being disconnected upstream or after a failure;
5. INSTALLATION
Unpack the spot-welder, assemble the separate parts included in the package.
WARNING: None of the spot-welders described in this handbook have lifting devices.
5.3 POSITION
Reserve a space in the installation area that is large enough and without obstacles
for guaranteeing access to the control panel, the main switch and the work area in
complete safety.
Make sure there are no obstacles near the areas where the cooling air enters and exits,
ensuring that conductive power, corrosive vapour, humidity, etc. cannot be sucked in.
compact, and suitable for supporting the weight (see "technical data") to prevent the
danger of toppling or dangerous movements.
Before making any electrical connection, make sure the spot welding machine plate
data correspond with the mains voltage and frequency available in the installation
area.
The spot welding machine must only be connected to a power supply system with
neutral conductor connected to earth.
To guarantee protection against indirect contact, use residual-current devices of the
following type:
- Type A ( ) for single-phase machines;
- Type B ( ) for three-phase machines.
- The spot welding machine does not meet the requirements of the IEC/EN 61000-
3-12 directive.
If it is connected to a public power grid, the installer or user must make sure that
the welding machine can be connected (if necessary consult the utility company).
Connect a normalised plug (3P + E: only 2 poles are used; INTERPHASE connection!)
of suitable capacity to the power supply plug and prepare a mains socket that is
protected by fuses or by a circuit breaker; the relative earth terminal must be connected
to the earth conductor (yellow-green) of the power line.
indicate "X" clamp, can be
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The capacity and intervention characteristic of the fuses and circuit breaker switch are
given in the "TECHNICAL DATA" paragraph.
Should several spot welding machines be installed, distribute the power supply
cyclically between the three phases so as to create a more balanced load, for example:
spot welding machine 1: L1-L2 power supply;
spot welding machine 2: L2-L3 power supply;
spot welding machine 3: L3-L1 power supply.
system (class I) ineffective, with resulting serious risks for people (e.g. electric
(FIG. D)
- Connect the DINSE plugs with the relative sockets.
- Insert the control cable connector into the relative socket.
Before carrying out any spot welding operation, a series of checks and adjustments
must be made with the main switch at "O" and the padlock closed.
- Make sure the electrical connection has been carried out correctly as indicated in
the previous instructions.
- Place a shim of the same thickness between the electrodes; make sure the arms,
which have manually been brought closer, are parallel and the electrodes are
aligned (coinciding tips).
Adjust if necessary, by loosening the locking screws of the arms that can be rotated
or moved in both directions along their axis; after adjusting, carefully tighten the
locking screws.
- Using the manual clamp, consider that the power of the electrodes during the spot
welding phase can be adjusted with the knurled nut (FIG. E); turn it clockwise (to
the right) to increase the force proportional to the increase in the sheet thickness,
selecting adjustments that make it possible to close the clamp (and relative micro
switch activation) using very limited power.
The parameters that determine the diameter (section) and mechanical seal of the
spot are:
- Force at the electrode.
- Spot welding current.
- Spot welding time.
using sheets of the same quality and thickness as those to be worked on.
The current and spot welding time parameters are adjusted automatically by selecting
the thickness of the sheet to be welded with the (+ / - icons) keys. Adjustments can
be made to the standard spot time (DEFAULT), within set limits, using the key (icon
- Place the lower electrode on the sheets to be spot welded.
- Move the upper lever of the clamp to the end stop to:
a) Close the sheets between the electrodes with the pre-adjusted force.
b) Pass the set welding current for the set time, signalled by the
switches on and off.
- Release the clamp lever a few moments after the icon has switched off (end of
welding); this delay (maintenance) gives the weld better mechanical characteristics.
that stops the spindle from rotating.
- If working on doors or hoods, connect the earth bar to them to prevent
current from passing through the hinges, and near the area to be spot welded
a) Bare the sheet as close as possible to the working area, for a surface that
corresponds to the earth bar contact surface.
b1) Fix the copper bar to the sheet surface, using a JOINTED CLAMP (welding
model).
b2) Spot weld a washer to the previously prepared sheet surface; pass the washer
through the slit in the copper bar and lock it in position with the supplied clamp.
Mount the relative electrode (POS. 9, Fig. F) in the gun spindle, and insert the washer
(POS. 13, Fig. F).
Place the washer in the selected area. Place the earth terminal in contact in the
indicated previously.
Screw, washer, nail, rivet spot welding
Fit the most suitable electrode on the gun, insert the element to be spot welded and
place it on the sheet in the necessary spot; press the gun push-button: release the
push-button only after the set time has elapsed.
Spot welding sheets on one side only
Fit the most suitable electrode on the spindle (POS. 6, Fig. F), pressing on the surface
to be spot welded. Activate the gun push-button, release the push-button only after the
set time has elapsed.
mm. This type of spot welding cannot be used on the supporting frames of the
chassis.
icon that