Window Function; Lock; Locking The Station; Unlocking The Station - Weller WTHA 1 Supplementary Operating Instructions

Window function

Option 1 (factory setting):
Set the foot-operated switch function to FS ON.
Limiting the adjustment range to ± 1-99 °C (±1-180 °F) based on a temperature locked using the
„LOCK" function.
The locked temperature therefore represents the middle of the adjustable temperature window.
Option 2:
Set the foot-operated switch function to FS OFF.
Starting from a set, locked temperature, it is possible to set a temperature window of ± 1-99 °C (±1-
180 °F) using the WINDOW function. If the actual temperature is within this window, the potential-free
contact (optocoupler output) becomes conductive.
Option Description
OFF Window function Deactivated (factory setting OFF)
1-99 °C Window function, Individually adjustable
1-180 °F

LOCK

Lock for the station. After the station is locked, it is no longer possible to change any device settings.
Exception 1: Window function Option 1.
Exception 2: See the PROFILE menu item
All other settings are disabled until the station is unlocked again.

Locking the station

Set the three-digit locking code of your choice (between 001 and 999) and confirm by pressing the
Menu button.
The lock is active (the display shows a lock symbol).

Unlocking the station

Press the Menu button. ON appears in the display
Set the three-digit locking code.
Press the Menu button to confirm the code.
Forgotten code?
Please contact our Customer
Service: technical-service@weller-
tools.com
GB
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