Application
The ERGO-STW are applied as fully ventilated welding posts. They serve for extraction the air polluted with dry dusts
formed generally during metal welding. The dust is captured directly close at the source of emission, in two directions:
upwards – through the self-supporting extraction arm, or downwards – through the suction chamber topped with grate.
For the ERGO-STW-R a connection with the discharge ventilation duct is needed (removing the extracted volume outside
the building), whereas ERGO-STW-F has a built-in filtering unit under the worktable and the cleaned air is recirculated back
to the room to avoid the thermal loss in winter.
Structure
In both versions, the self-supporting structure contains a suction chamber with a damper (directly under the worktop) and
grate in the worktop. For welding the small elements is the rotary table.
There is also a clamp for a mass-cable (grounding) of the welding machine. To the table is mounted a 2-meters’-range ERGO
extraction arm with damper and easy-to-handle hood. Depending on the position of the dampers, the extraction can follow
upwards (and to the side) through the hood or downwards through the grate and suction chamber.
 |
 |
ERGO-STW-R consists of:
- workshop table with a tool cabinet
- extraction fan
- electrical unit
- extraction arm
|
ERGO-STW-F consists of:
- workshop table with a tool cabinet
- filtering unit
- extraction arm
The filtering unit is equipped with a fan, cartridge filter,
pneumatic filter regeneration system and control unit.
Impurities that have accumulated in the outer filter surface,
are struck down (into the waste-container)
by the cyclical
pulses of compressed air.
Pneumatic filter regeneration system consists of a compression
air tank, and an electromagnetic valve. Therefore the
device has to be connected to the external compression
installation.
|
Both the welding stations are offered in two modes of the fan operation:
- ERGO-STW-R or STW-F – the fan is operated manually.
- ERGO-STW-R-A or STW-F-A is adapted for automatic fan operation at the moment of the electrical welding arc flash.
In this application the extraction arms is additionally equipped with a halogen spotlight.
 |
welding station - ERGO-STW-R |
 |
welding station - ERGO-STW-F |
Technical data
| Type |
ERGO-STW-R * |
ERGO-STW-R-A ** |
ERGO-STW-F * |
ERGO-STW-F-A ** |
| Part # |
704U64 |
704U65 |
704U66 |
704U67 |
| Supply
[V] |
3 × 230/460 |
120 |
| Motor
rate
[HP] |
0.75 |
1.5 |
| Weight
[lb] |
362 |
551 |
| Noise level [dB(A)] |
72 |
68 |
| Volume flow [cfm] |
600 |
600 |
| Disposable
pressure [in. w.g] |
1.2 |
— |
Recommended pressure
of external
installation [bar] |
— |
6 |
Connection
diameter
to
discharge
the
polluted
air [in] |
6 |
— |
* Version adapted only for manual fan operation.
** Version adapted for automatic fan operation at the moment of welding arc flash.
Cartridge filter – replaceable for ERGO-STW-F
 |
Type |
Part # |
iltering
surface
[sq. ft] |
Filter
material |
Filtering efficiency |
Application |
| PT-20-U |
838F27 |
215 |
teflon-coated polyester |
99.5 % |
- welding dusts, dry
fine dusts,
for
example:
bismute,
detergents,
cement,
dust in food production,
pharmaceutical
industry, chemical industry
- water and oil resistant
|
NOTE: Placing the order specify the part № and type designation of the given device.