Access Code Menu - Walchem WDP420 Instruction Manual

5.9

Access Code Menu

This menu determines whether the access code feature of the controller is enabled or disabled and
allows you to customize the access code to your own value. The access code controls whether or not
you are allowed to change the parameters in the controller. With the access code disabled, any user may
change any parameter. With the access code enabled, any user can view any parameter, but cannot
change them. Once an attempt is made to change a parameter, the display will prompt the user to enter
the access code. If the correct access code is entered, the parameters can be changed. If the wrong
access code is entered the parameters cannot be changed. Once the access code has been correctly
entered, it will remain valid until there is a period of 10 minutes without a key being pressed.
The access code menu will appear as shown below:
Access Code
Access Code
Access Code
Enable N / Y
New Value
Any Top Display
Access Code 0000
10.00 pH 68° F
Access Code DIS
EXIT ENTER
Access Code DIS
Enable N
Access Code DIS
Enable Y
DIS Indicates that the access code is disabled. No access code is required to change any setting.
Indicates that the access code is required to alter settings.
REQ
OK Indicates that the access code is required and has been entered correctly.
Press the Up or Down arrow key to change the N to Y and press ENTER to enable the access code
feature. If the access code is enabled you must first enter the access code to disable it.
Press ENTER to display the current access code value and use the arrow keys to change it to any value
between 0 and 9999. If the access code has been enabled, you will be prompted to enter the current
access code before being allowed to change it. You must remember the access code if you enable it.
The Factory default Access code is 1995.
If you change the access code and can't remember it follow this procedure:
1. Turn off power to the controller.
2. Wait 10 seconds.
3. Press and Hold the UP and DOWN arrow keys while turning on the power.
4. Read the access code on the display.
5. Release the keys, and the access code will disappear.
The Access Code prompt may appear at any screen in the entire menu
structure if the current access code has not been entered by the user.
Access code entries will be valid for 10 minutes from the most recent
key press.
Possible status screens
Access Code REQ
Access Code
PREV. NEXT
Access Code DIS
New Access Code 0
Access Code DIS
Value 1234
Enter any four digit code
Figure 15 Access Code Menu
Access Code Menu
OK
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