EVCO c-pro nano NAV - Manual (Page 27)

C-PRO NANO AND MICRO NAV APPLICATION MANUAL
Page 27
6.7 Management of fresh water and salt water
The fresh water pump is switched-on when the machine is switched-on and remain on always
during all functioning. Only for machine switch-off or for the change-over it is switched-off with a
delay t4. The flow input determines the correct circulation of the fresh water in the circuit, stopping
the machine the absence of flow is detected. From the enabling of the regulation a time of t1 before
checking the flow input.
The following diagram illustrates the switch-ob logic of the fresh water pump and the relative flow
control:
From enabling to regulation, a time t2 > t1 must be waited before switching the slat water pump on.
The compressor can only be switched on after time t3 from the switch-on of the salt water pump.
The following diagram illustrates the switch-on logic of the salt water pump and of the compressor:
During normal functioning, if the absence of flow is detected for a time tFLO, the alarm is
activated that stops the pumps and the compressor.
Compressor switch-off for example, because the local temperature regulation requests, switches the
salt water pump off.
Time
Machine on
Activation of the fresh water
Enabling of the flow alarm
t1
t4
Machine off
Enabling for regulation
Time
Enabling for regulation
t2
Activation of the salt water
t3
Compressor activation