ZENITH 140 INSTRUCTION MANUAL
90
P211, P221, P231, P241, P25, 2611 - Relay Function,
This parameter defines which pump duty the relay should respond to as
follows.
Relay is always de-energised
All pumps are used to assist each other (run at the
same time) and each pump has its own setpoints.
(P213, 223, 233, 243, 253, 263 & P214, 224, 234,
244, 254, 264).
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, 263 & P214, 224, 234, 244, 254, 264).
3 = Alternate duty assist
All pumps are used to assist each other (run at the
same time) and each pump has its own setpoints,
(P213, 223, 233, 243, 253, 263 & P214, 224, 234,
244, 254, 264). but each time all pumps have
stopped, then the setpoints are sequentially rotated
between the pumps to ensure equal pump use.
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, 263 & P214, 224, 234, 244, 254, 264) but each
time all pumps have stopped, then the setpoints are
sequentially rotated between the pumps to ensure
equal pump use.