Control Panel Lock - Grundfos DME 2 Notice D'installation Et D'entretien

4.23 Control panel lock

It is possible to lock the buttons on the control panel
to prevent malfunction of the pump. The locking
function can be set to "ON" or "OFF". The default
setting is "OFF".
A PIN code must be entered to change from "OFF" to
"ON". When "ON" is selected for the first time,
"_ _ _ _" will appear in the display. If a code has
already been entered, it will appear when an attempt
to change to "ON" is made. This code can either be
re-entered or changed.
If no code has been entered, a code must be set in
the same way as the "NX" and "IN" values described
in section 4.12.
If a code has already been entered, active digits are
flashing.
If attempts are made to operate the pump in locked
condition, "LOCKED" will appear in the display for
2 seconds, followed by "_ _ _ _". A code must be
entered. If the entering of a code has not been
started within 10 seconds, the operating display with-
out changes will appear.
If a wrong code is entered, "LOCKED" will appear in
the display for 2 seconds, followed by "_ _ _ _".
A new code must be entered. If the entering of a
code has not been started within 10 seconds, the
operating display without changes will appear. This
display will also appear if the entering of the correct
code exceeds 2 minutes.
If the locking function has been activated but the
control panel is unlocked, the control panel will be
locked automatically if it is not operated for
2 minutes.
The locking function can also be reactivated by
selecting "ON" in the "LOCK" menu. The previously
entered code will then appear and must be re-
entered by pressing the
The code can also be changed.
The control panel can be unlocked either by means
of the selected code or the factory code 2583.
The following buttons and inputs are still active when
the panel is locked:
• Priming ( -button).
100%
• On/off button.
• All external inputs.
Operating display
Fig. 24 Control panel lock
button four times.
Operating display
Activating the locking function and locking the
control panel:
1. Select "LOCK" in the menu.
2. Select "ON" by means of the buttons
and confirm with
3. Enter or re-enter a code by means of the but-
tons , and
The locking function has now been activated and the
control panel is locked.
Unlocking the control panel (without deactivating
the locking function):
1. Press once. "LOCKED" appears in the dis-
play for 2 seconds, followed by "_ _ _ _".
2. Enter the code by means of the buttons
and *.
The control panel has now been unlocked and will
automatically be locked again if the control panel is
not operated for 2 minutes.
Deactivating the locking function:
1. Unlock the control panel as described above.
2. Select "LOCK" in the menu.
3. Select "OFF" by means of the buttons
and confirm with
The locking function has now been deactivated and
the control panel is unlocked.
* The panel can always be unlocked with code 2583.
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