Page 10
www.becs.com 9487 Dielman Rock Island Ind Dr, St. Louis, MO 63132
Operation and Maintenance Manual Rev: C17
A – 4.11: Pressure & Vacuum Setup (continued)
A – 4.11.5: Strainer Vacuum
If your controller is configured to monitor the
Strainer Vacuum, either a transducer or a gauge
may be used. If a transducer is used, you will
have the following options:
High Vac Alarm (Op): The high vacuum
alarm will activate when the pressure reaches or
falls below this setting. This is actually a low
pressure alarm that operates in the negative
pressure range, which is a vacuum. You may
disable this alarm by holding down the +/- key
for 1 second.
If the recirc pump is assigned a relay, the
high strainer vacuum alarm will trigger an
emergency off of the system.
If the recirc pump is assigned a relay and
the High Vac Alarm is disabled, this will
defeat the emergency off.
High Vac Warning (Op): The high vacuum
warning will activate when the pressure reaches
or falls below this setting. This is actually a low
pressure alarm that operates in the negative
pressure range, which is a vacuum. You may
disable this alarm by holding down the +/- key
for 1 second.
The high strainer vacuum warning is
generally used to indicate to the operators
that the strainer needs cleaned. While this
warning does flash the alarm LED, it does
not shut down any pumps or feeds.
Alarm Hysteresis (Mgr): This value sets the
level that the pressure reading must rise above
the alarm settings before the alarm will shut off.
A – 4.11.6: Total Dynamic Head
If your controller is configured to monitor the
Total Dynamic Head, you will have the
following options:
Display TDH (Op): Enables displaying total
dynamic head on the normal display.
High Alarm (Op): The high alarm will
activate when the total dynamic head across the
pump reaches or rises above this setting. You
may disable this alarm by holding down the +/-
key for 1 second.
Low Alarm (Op): The low alarm will activate
when the total dynamic head across the pump
reaches or falls below this setting. You may
disable this alarm by holding down the +/- key
for 1 second.
Alarm Hysteresis (Mgr): This value sets the
amount that the total dynamic head has to rise
above the high alarm or fall below the low
alarm before the alarm will shut off.
A – 4.12: Backwash Pit Level
If your controller is configured to monitor the
backwash pit level, either a level sensor or a pair
of floats may be used. If a level sensor is used,
you will have the following options:
High Alarm (Op): The high alarm will
activate when the input rises above this setting.
Backwash of the current filter will be paused
until the level falls to or below the low point.
Low Point (Op): Level to resume backwash
after a high backwash pit alarm.
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