Xylem ECOCIRC XL & XLplus - Manual (Page 26)

The display will stop blinking to confirm the
change.
NOTICE:
If a non return valve is mounted on the system, it
must be ensured that the set minimum discharge
pressure of the pump is always higher than closing
pressure of the valve.
6.1.4 Change the displayed unit of
measurement
1. Press the button (3) to change the unit of
measurement. See Figure 13 .
Power
Speed
Head
Flow
Parameter
button
Parameter
button
Parameter
button
Parameter
button
2. When flow and head are displayed, by press-
ing the button (3) for more than one second,
the unit of measurement can be changed as
follow:
• Flow: m3/h ↔ gpm (US)
• Head: m ↔ ft
6.2 Start or stop the pump
CAUTION:
• The pump must not run dry as this
can result in the destruction of the
bearings in a very short time. Fill and
vent the system correctly with liquid
before first start-up. The pump rotor
chamber will be vented after the
power on of the pump with an auto-
matic air venting procedure.
• The system cannot be vented
through the pump.
• Start the pump in one of the following ways:
• Switch on the power supply of the pump.
• Close the start/stop contact.
• Send the start command through the com-
munication bus.
The pumps starts pumping in constant pressure
mode with the following default set point:
• 2m for XX-40 models (Max head 4m)
• 3m for XX-60 models (Max head 6m)
• 4m for XX-80 models (Max head 8m)
• 5m for XX-100 models (Max head 10m)
• 6m for XX-120 models (Max head 12m)
For more information about how to change set-
ting, see Configure the pump settings .
• Stop the pump in one of the following ways:
• Switch off the power supply of the pump.
• Open the start/stop contact.
• Send the stop command through the com-
munication bus.
6.2.1 Automatic air venting procedure
At each power-on of the pump unit, an automatic
air venting procedure is executed. During this
phase, the user interface displays "deg" and a
count-down until the completion of the procedure.
The procedure can be recalled or skipped:
• Manually by pressing simultaneously the two
buttons (5). See Figure 13 .
• For ecocirc XLplus only, via communication bus.
See the communication manual on www.low-
ara.com.
6.2.2 Activate automatic twin pump
operation (only for ecocirc XLplus)
The following procedure must be executed during
the start-up phase of the pump.
1. Enter the twin pump sub menu when the dis-
play is showing tuma or tusl.
2. Select the applicable twin pump operation.
• bcup = backup operation
• alte = alternative operation
• para = parallel operation
3. Push the parameter button to activate the new
setting.
The second pump is configured by the master
pump.
7 Maintenance
Precaution
Electrical Hazard:
Disconnect and lock out electrical pow-
er before installing or servicing the unit.
WARNING:
• Always wear protective gloves when
handling the pumps and motor.
When pumping hot liquids, the
pump and its parts may exceed
40°C (104°F).
• Maintenance and service must be
performed by skilled and qualified
personnel only.
• Observe accident prevention regu-
lations in force.
• Use suitable equipment and protec-
tion.
WARNING:
• A strong magnetic field is created
when the rotor is removed from or
inserted into the pump head. This
magnetic field can be harmful to
pacemaker wearers and others with
medical implants. In addition, the
magnetic field may attract metal
parts to the rotor which can cause
injuries and/or damage the bearing
of the pump.
en - Translation of the original instructions
26