Nortec MH Series - Manual (Page 60)

57 | Operation
MHB Configuration
The MHB is factory configured to operate under most conditions and does not have any user
configurations available. However the control module inside the control box has an LCD display
which displays the current status of the MHB. The illustrations below explain the meaning of
the MHB display screens.
Normal Operation
Displays the status of the safety loop, Active when the
system is operating, number of stages that are on, an the
current system demand.
Soft Start
Dry media cannot absorb water as effectively as wet
media. In order to prevent wasting water the system will
pulse staging valves if the media has been dry for a period
of time. Once the media have been given some time to
become wet the MHB will stop pulsing and continue normal
operation.
Drying Cycle
In order to help prevent microbials from growing in the
media the MHB controller will periodically shut off staging
valve for a period of time to allow them to dry out. After a
period of time it will resume normal operation.
Media Wash
To help flush away minerals that have been left in the
media by evaporated water the MHB will periodically
activate the staging valve(s) even when there is no
demand. After a period of time it will resume normal
operation.
Low Pressure Alarm
The pressure switch on the MHB will detect when the inlet
water pressure is low and stop operation until water
pressure increases sufficiently for proper operation. The
display will indicate that the MHB is not operating due to
low water pressure.