EBARA Ego 2 easy Installation And Operating Manual page 39

TWIN PUMP OPERATION
Twin pumps have double hydraulic housing with integrated check valve, which automatically turns based on flow,
and two separated motors.
Ego 2 (T) easy pumps do not have a control logic that ensures the continuous operation of at least one pump -
the control logic must be carried out by the customer / user himself. It is recommended that the control logic
exchanges pumps for operation with time interval of ≤ 24 h.
Ego 2 (T) easy C pumps communicate with each other and have the following features:
- Alternating operation [default setting] – One pump is operating while the other one is on standby.
Pumps switch their role every 24 hours or when an error occurs on one pump.
- Backup operation – One pump operates constantly and the other one is on standby. If an error occurs
on the operating pump the one on standby will automatically start working. This mode can be set up by
turning off the pump that we wish to be on standby. That is done by holding the
Parallel operation – Both pumps work at the same time with the same settings of constant pressure. This mode
is used when greater flow than one single pump can output is needed. When the first pump hits its flow limit the
second one turns on and compliments the first to reach desired flow. This mode is activated when we set both
pumps to constant pressure mode. Night mode is not recommended in this mode of operation.
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button for 5 seconds.