HygroMatik WL-RO-170, Руководство пользователя

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Page 17
4.3 Functional description
Fig. 2: Flow chart
*) WL-ROB-170 only
*)
*) *)
Nozzle
Concentrate
Sample
Permeate
Raw water
Function Description
Monitor inlet pressure of
raw water The PS110.52 pressure switch monitors the raw water inlet pressure.
If the required input pressure drops below minimum, the system enters
malfunction mode after a time delay: the red LED flashes quickly.
Increase water pressure The PU110.01 high-pressure pump increases the water pressure up to
specified operating pressure and feeds water into the membrane.
Monitor permeate volume
flow The permeate volume flow is monitored by the FT110.68 flowmeter.
If the volume flow reaches a defined warning threshold value (i.e. 50 l/h ),
the red LED starts to flash slowly (after a time delay).
If the volume flow reaches the defined alarm threshold value (i.e. 40 l/h ),
the system shuts down.
Monitor pressure in perme-
ate pipe (of the system to
be filled)
l
In the permeate pipe, the PS110.59 pressure switch is installed for moni-
toring the permeate pressure.
If the pressure set on the pressure switch is achieved in the system to be
filled, the system is shut down.
The system resumes operation automatically when the pressure in the
system to be filled drops off again and falls below the pressure set on the
pressure switch.