![background image](http://html1.mh-extra.com/html/gardner-denver/gd-connect-12/gd-connect-12_manual_3574503029.webp)
5. Operation
29
5.9 Codes
To prevent unauthorized program changes, the settings
are code-protected.
By touching the "Code“ key in the main menu, a code
can be entered to change the parameter settings.
The symbol on the key indicates whether the access
code is locked or unlocked:
Code is locked, parameters cannot be changed.
In the GD Connect 12 there are different codes:
Code "7070"
This code allows
Settings in the menu to be locked
(see section 5.7 "Settings")
The "Service“ status of a compressor to be
switched on or off
(see section 5.3 "Compressor information")
After the code is unlocked, the code will be locked
again
automatically after 15min
or by a power loss
Code "7555"
This code allows the "Service“ status of a compressor
to be switched on or off
(see section 5.3 "Compressor information").
After the code is unlocked, the code will be locked
again
automatically after 15min
or by a power loss
Code "7777"
With this code, the GD Connect 12 can be reset to the
factory settings and the commissioning assistant can be
started.
(see chapter "5.1 First commissioning").