Grundfos IO 111, Installation And Operating Instructions Manual

Page: 17 / 148

E
ngl
ish (
G
B)
17
8.2 Alarm resetting
Alarms can be reset by means of terminals R1 and
R2 (pos. 2).
Manual resetting
Alarms can be reset by short-circuiting R1 and R2.
The reset button (pos. 14) also short-circuits R1 and
R2. Never press the reset button for for more than
2 seconds to reset alarms, see
9. Calibration .
Automatic resetting
By making a permanent short-circuit between R1
and R2 alarms are automatically reset when the
alarm cause has disappeared.
9. Calibration
After oil change the measurement of water in oil can
be calibrated to the new oil:
1. Let the pump run for at least one minute.
2. Press the reset button for more than five
seconds.
3. 4 mA can now be read between terminals A1 and
G1 of analog output 1 (pos. 2), see fig. 1.
(4 mA = 0 %)
10. Maintenance
The IO 111 requires no maintenance. The IO 111
must only be cleaned with a dust-free cloth.
11. Service
The IO 111 cannot be serviced. If the module is
faulty, it must be replaced.
15
Pump fault
Yellow indicator light indicates warning, see 2.2 Overview of alarms
and warnings .
The indicator light is on in case of communication fault (pump with
SM 111), internal fault or time for service.
The indicator light will flash if the IO 111 is not set correctly to the
pump variant connected. See 6.3. This indicates configuration
warning.
Pos. Symbol Description
Note
If this is done with used oil, the
measurement of water in oil may be
incorrect.
Grundfos.bk Page 17 Tuesday, January 25, 2011 12:56 PM