Tweco ArcMaster 401S Manuel d'utilisateur télécharger pdf (Page 27)

ARCMASTER 401S POWER SOURCE

Manual 0-5345 3-7 INSTALLATION, OPERATION AND SETUP

1 VRD (Voltage Reduction Device) Indicator Lights

A VRD (voltage reduction device) is a hazard reducing device designed to reduce electric shock hazards present

on the output of welding power source when operating in SMAW (STICK) mode. Note that the presence of

VRD should not be used as a substitute for the use of appropriate safety practices as indicated in section one

of this manual.

Please Note: VRD is factory set to OFF on the 401S. The red LED will be on when unit is powered up. To enable,

turn VRD switch on Control PCB5 (refer to Figure 3-3) to the "ON" position. If VRD is active, green LED will

be on (standby below 12V). When arc is established, red LED will blink (above 12V).

VRD Switch

Control PCB5

Art # A-12454

Output Voltage

Adjustment

Potentiometer

Figure 3-3

2 Parameter Selection Button

This button is used to select between HOT START, WELDING CURRENT, and ARC FORCE while in SMAW (STICK)

mode and HOT START and WELDING CURRENT in TIG mode. Refer to 3.12 Special Function for more info.

3 Digital Meter Volt & Ammeter

Welding amperage, Voltage and parameter values are displayed in this window. Internal warnings such as over

temperature, low or high input voltage applied are signaled to the operator by error message on the screen.

When welding, it displays average welding current. After weld has been completed, it displays average welding

current for 10 seconds.

4 Encoder Control

It allows the operator to adjust the weld parameters within the entire range of the power source, also used to

set each parameter value. This control sets the selected weld parameter, rotating it clockwise increases the

parameter value and counterclockwise to decrease. A selected weld parameter can be adjusted at any time

even while welding. Refer to 3.12 Special Function for more info.

5 Process Selection Button

The process selection control is used to select the desired welding mode. Five modes available for 401S. These

modes are selected by pressing the selection button. For modes where there are two variations available press

and hold the button until it blinks to select the second function.

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Tweco ArcMaster 401S Manuel d'utilisateur Page 27