Pulsar UltraTWIN, Инструкция по эксплуатации

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PULSAR MEASUREMENT
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PUMP DUTY DESCRIPTION
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, (P*2
1 3, 2 2 3, 2 3 3,
2 4 3, 2 5 3 & P*2 1 4, 2 2 4, 2 3 4, 2 4 4, 2 5 4, 2 6 4).
6 = Service ratio duty assist
All pumps are used to assist each other (run at the
same time) and each pump has its own setpoints
(P*2
1 3, 2 2 3, 2 3 3, 2 4 3, 2 5 3, 2 6 3 & P*2 1 4, 2 2 4, 2 3 4,
2 4 4, 2 5 4, 2 6 4). And a service ratio setting. The third
setpoint (P*2 1 5, 2 2 5, 2 3 5, 2 4 5, 2 5 5, 2 6 5) is used to
set the service ratio. Each time a pump is required to
start then the pump with the least running hours
(with respect to the service ratio) is started (i.e. the
setpoints are re-assigned accordingly). For example,
if two pumps A and B have the service ratio set to 2
and 1 respectively, then pump A will operate for
twice as many hours as pump B.
7 = Service ratio duty
backup
The first pump switched on is the first pump to be
switched off, regardless of the set points, so the
setpoints are dynamically changed to enable this.
If
a pump fails to meet the demand (due to
malfunction, intake blockage and so on), then it is
stopped, and another pump shall take over. Each
time a pump is required to start then the pump with
the least running hours (with respect to the service
ratio) is started (i.e. the setpoints are re-assigned
accordingly). Each pump has its own setpoints
(P*2
1 3, 2 2 3, 2 3 3, 2 4 3, 2 5 3, 2 6 3 & P*2 1 4, 2 2 4, 2 3 4,
2 4 4, 2 5 4, 2 6 4). The third setpoint (P*2 1 5, 2 2 5, 2 3 5,
2 4 5, 2 5 5, 2 6 5) is used to set the service ratio. E.g., if
two pumps A and B have the service ratio set to 2
and 1 respectively, then pump A will operate for
twice as many hours as pump B.