ZUWA Impeller Pumps
16
9. Accessories
9.1 Dry run protection
Dry run protection keeps the Impeller from
overheating when running dry.
reset button
In a dry run periode the pump heats up. A thermo
sensitive switch stops the motor at approximately
70°C. After cooling to 60°C the pump can be
restarted.
>
After waiting for a short time push the
red reset
button
to restart the pump.
Do not pump liquids with a temperature of
70°C or more as this would activate the dry
run protection!
9.2 Flow
control
With the flow control the flow rate of the pump
can be controlled and adjusted to a specific
quantity.
setting
screw
Flow rate measurement is based on the
principle of a floater connected to a spring.
The flow meter is integrated in the housing.
The flow rate can be adjusted with a setting
screw:
>
Adjust the setting screw using the scale
from 1 - 6
>
Fine adjustment: turn the setting screw
when pump is operating until the required
flow rate is shown in the vision panel.
Technical data
flow rate:
2 – 8 L/min
(for A-types)
8 -30 L/min
(for A-types)
10 – 40 L/min
(for B-types)
connecting thread:
2 x ¾“ a
2 x 1" a
2 x 1" a
max. media temperature:
100°C
max. working pressure:
10 bar
material:
brass (approved for drinking water)
