Priority Of Settings; Fault Finding Chart - Grundfos UPED 50-12 Montage- Und Betriebsanleitung

Confirmation of correct connection:
1. Point the R100 at the master pump.
2. Press "OK" in field 3.
If the connection has been correctly established,
the green indicator light on the slave pump will be
flashing rapidly to indicate this.

7.7 Priority of settings

The forced-control signals will influence the settings
available on the pump and with the R100. By means
of the pump control panel or the R100, the pump can
always be set to max. curve duty or to stop.
If two or more functions are activated at the same
time, the pump will operate according to the function
with the highest priority.
The priority of the settings is as shown in the follow-
ing table:
Without bus signal:
:
Possible settings
Priority
Pump control
panel or R100
1 Stop
2 Max. curve
3
4
5 Min. curve
6 Setting of head
Example: If, via an external signal, the pump has
been forced to operate according to the max. curve,
the pump control panel or the R100 can only set the
pump to stop.
With bus signal:
:
Possible settings
Pump
Priority
control
panel or
R100
1 Stop
2 Max. curve
3
4
5
6
Example: If, via an external signal, the pump has
been forced to operate according to the max. curve,
the pump control panel, the R100 or the bus signal
can only set the pump to stop.
External
signals
Stop
Max. curve
Min. curve
Setting of head
External Bus
signals signal
Stop Stop
Max. Max.
curve curve
Min. curve Min. curve
Setting of
head

8. Fault finding chart

Before removing the terminal box cover,
make sure that the electricity supply has
been switched off for at least 5 minutes.
The pumped liquid may be scalding hot
and under high pressure. Before any
removal or dismantling of the pump, the
system must therefore be drained or the
isolating valves on either side of the pump
must be closed.
• Only the indicator lights of the master pump are
active and they will therefore indicate fault no mat-
ter if the fault is in the master or the slave pump.
• The indicator lights of the slave pump can be acti-
vated briefly by pressing a button on the slave
pump control panel. Fault indication will then only
apply to the slave pump.
• The indicator lights mentioned in the fault finding
chart are the indicator lights of the master pump.
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