Tweco ArcMaster 201 TS, Руководство по обслуживанию

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TWECO 201TS OPERATION
Operation 4-2 Manual 0-5150
D. Process Selection Switch
Switches between STICK (SMAW), LIFT TIG (GTAW)
and HF TIG (GTAW) modes. Refer to Section 4.03 Setup
for STICK (SMAW) Welding, 4.04 Setup for LIFT TIG
(GTAW)Welding and 4.05 Setup for HF TIG (GTAW)
Welding.
E. Welding Current Control
The welding current is increased by turning the Weld
Current Control Knob clockwise or decreased by turn-
ing the Weld Current Control Knob anticlockwise. The
welding current should be set according to the specific
application. Refer to application notes in this section
for further information.
F. Arc Force/Down Slope Control
Arc Force is effective when in STICK (SMAW) Mode only.
Arc Force control provides an adjustable amount of Arc
Force (or “dig”) control. This feature can be particularly
beneficial in providing the operator the ability to com-
pensate for variability in joint fit-up in certain situations
with particular electrodes. In general increasing the Arc
Force control toward ‘10’ (maximum Arc Force) allows
greater penetration control to be achieved. Down Slope
operates in TIG mode only. It is used to set the time for
weld current to ramp down. Refer to Item C (Trigger
Mode Selection Switch) for further information regard-
ing Downslope operation.
G. Gas Outlet
The Gas Outlet is a 5/8”-18 UNF female gas fitting and
is utilized for the connection of a suitable TIG Torch.
B. FAULT Indicator
The welding power source is protected by a self resetting
thermostat and over primary current protection devices.
Welding can not take place if the FAULT Indicator lights
up continuously or is lights up.
Thermostat Protection
If the Fault Indicator lights up then the duty cycle of
the power source has been exceeded. Leave the power
on and wait for the Fault Indicator to extinguish before
resuming welding.
Over Primary Current Protection
If the Fault Indicatorlights up continueously then the
primary current into the main transformer has been
exceeded. Have an Accredited Tweco Service Provider
inspect then repair the welder.
C. TRIGGER Mode Switch (LIFT TIG and HF Mode Only)
2T (Normal) Mode
Press the TIG Torch Trigger Switch or Foot Control and
hold depressed to weld. Release the TIG Torch Trigger
Switch or Foot Control to stop welding. Down Slope
operates in LIFT TIG and HF TIG (GTAW) mode only.
While welding if the TIG Torch Trigger Switch is released,
the welding current ramps down to zero current over a
defined period of time. The time period is determined
by the Down Slope Control Knob (F).
4T (Latch) Mode
This mode of welding is mainly used for long weld runs.
The operator need only to press the TIG Torch Trigger
Switch to activate and then release the TIG Torch Trigger
Switch to continue to weld, then press the TIG Torch
Trigger Switch again and release the TIG Torch Trigger
Switch to stop welding. This eliminates the need for the
operator to depress the TIG Torch Trigger Switch for the
complete length of the weld. The 4T mode incorporates
a current slope function which includes a fixed current
up slope of 1 second and an adjustable current down
slope. Current slope operates in TIG Mode only. Up slope
is not adjustable and activates automatically in 4T mode
when the TIG torch trigger is depressed. To activate
the Down Slope function in 4T mode while welding,
the TIG Torch Trigger Switch must be depressed and
held while welding which will ramp the Welding Current
down to zero over a defined period of time. The time
period is determined by the Down Slope Control Knob
(F). At any time while welding if the TIG Torch Trigger
Switch is depressed and released the arc will extinguish
immediately.