Operation; The Current Levels For Alarm Lights; Led Indications; Reset The Alarms After A Fault Indication - Xylem FLYGT MiniCAS II Installation, Operation And Maintenance Manual

5 Operation

5 Operation

5.1 The current levels for alarm lights

When the current level is between 3–22 mA, it is only the SUPPLY LED that is light.
Current level (mA)
> 22
< 3

5.2 LED indications

Symptom
The leakage indicator LED is lit.
The temperature indicator LED is lit.
The sensor output voltage is low.
The leakage indicator is nuisance
tripping.

5.3 Reset the alarms after a fault indication

After a leakage fault, the relay resets automatically.
After an overtemperature fault, the relay requires a manual reset.
Select one of the following steps to reset the relay:
10
– Push the external push-button that is connected to pin 6 and pin 7.
When using the 24 V relay, pin 6 and pin 2 also resets.
– Interrupt the power supply for a short while.
Type of alarm
Leakage alarm
Overtemperature alarm
Cause
There is a leakage in the pump.
There is an earth fault in the sensor
circuit wiring.
A thermal contact is open.
The CLS is connected with the wrong
polarity in series with the
temperature switches.
There is an earth fault in the sensor
circuit wiring.
The relay has a fault.
The drive unit has CLS and VFD, and is
not protected by a filter.
The drive unit has a CLS and no VFD,
but the fault is due to interference
from other drive units.
MiniCAS II Installation, Operation, and Maintenance Manual
Remedy
Service the pump. For information,
see Check which sensor tripped the
leakage alarm (page 11).
See Check for an earth fault in the
sensor circuit (page 11) .
Service the pump.
Change polarity on the sensor output
of the relay.
See Check for an earth fault in the
sensor circuit (page 11).
Replace the relay.
Install a filter in the drive units
junction box, see Filter kits (page
16)
Install a filter on the sensor output of
the relay.