If a pump fails to meet the demand (due
to malfunction, intake blockage etc.),
then it is stopped and another pump shall
take over. Each pump has its own
setpoints, (P213, 223, 233, 243, 253 &
P214, 224, 234, 244, 254) but each time
all pumps have stopped, then the
setpoints are sequentially rotated
between the pumps to ensure equal
pump use.
5= Duty backup and assist
First pump comes on, if it cannot cope,
it goes off and next pump comes on
(duty backup). This continues until the
last pump comes on and if it cannot cope
the first pump comes back on to assist
the last pump (duty assist) if the level
continues to rise all other pumps will
come on (assist) in turn until the level
decreases to the pump off points. Each
pump has its own setpoints, (P213, 223,
233, 243, 253 & P214, 224, 234, 244,
254).
Important Information
The pumps are started and stopped at the “ON” and “OFF” setpoints. To
pump down (reduce level) then set “ON” higher than “OFF”. To pump up
(increase level) then set “ON” lower than “OFF”.
The third parameter for each relay determines the pump group. You can
have two groups of pumps, and all similar duties within that group will
operate together.
P212, P222, P232, P242, P252 - Relay Pump Group
By default, all pump groups are set to 1, but if you want to have another
group, then set this parameter to 2, for each pump relay that should operate
together as part of a second group.
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