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English (US)
9.7.4 DLC, transducer-controlled option
The control panel can perform the functions listed below. Depending on the number of float switches for your application, some functions
may be omitted or combined.
*
To determine a pump seal failure, overtemperature or overload failure trip, open the dead-front inner door and look for the following
relay conditions:
Overload relay: When the overload relay trips, the trip indicator is present on the device. The overload relay can be reset by pressing
the blue reset button. The overload relay can be switched to manual or automatic resetting.
K02: This relay is active when the overtemperature sensor in the pump has tripped.
K03: This relay is active when the seal-failure sensor in the pump has tripped.
K04: This relay is active when the overtemperature sensor in the pump has tripped.
K05: This relay is active when the seal-failure sensor in the pump has tripped.
High Level Alarm
• This preset level activates the alarm indication on the screen and the audible alarm when the level is
high for longer than the high-level alarm delay (factory set for 5 seconds).
• Press the Push-to-Silence button on the side of the control panel to silence the audible alarm.
• The alarm indication on the screen will remain on until the level is lowered, and the audible alarm will
reactivate in 12 hours if the alarm condition is not corrected.
Lag Pump On
• The lag (standby) pump (both pumps will be on) will start at the preset pressure of the level sensor for
lag (standby) operation.
• Both pumps will continue to run together until the level sensor pressure reduces below the preset
Pumps Off level.
Lead Pump On
• The lead (duty) pump will start at the preset pressure of the level sensor for lead (duty) pump operation.
• The lead (duty) pump will run until the level sensor pressure is reduced below the preset pumps-off
level.
Pumps Off
• Both pumps will stop when he level sensor pressure is reduced below the preset pumps-off level if the
delay has elapsed.
Redundant Off & Low Level
Alarm
• The pumps will stop when the liquid level is lowered to this level for more than two seconds.
• Pumping will be disabled in both the automatic modes.
• The alarm indication on the screen and the audible alarm will be activated.
• Press the Push-to-Silence button on the side of the control panel to silence the audible alarm.
• The alarm indication on the screen will remain on until the liquid level is raised.
• The audible alarm will reactivate in 12 hours if the alarm condition is not corrected.
Transducer Failure
• If the transducer signal drops below 3 mADC, a transducer failure alarm will be activated.
• The alarm indication on the screen and the audible alarm will be activated.
• A message will be shown on the screen.
Backup float switches
High Level Alarm
• This float switch activates the alarm indication on the screen and the audible alarm when lifted for
longer than the high-level alarm delay (factory set for 5 seconds).
• This float switch also starts both pumps. Both pumps will run until the high-level pump run time has
elapsed.
• Press the Push-to-Silence button on the side of the control panel to silence the audible alarm.
• The alarm indication on the screen will remain on until the float switch is lowered, and the audible alarm
will reactivate in 12 hours if the alarm condition is not corrected.
Redundant Off and Low
Level Alarm
• This float switch stops the pumps when lowered for more than two seconds.
• This float switch is a backup float switch which will operate if the transducer fails.
• Pumping will be disabled in both the automatic and manual modes.
• This float switch also activates the alarm indication on the screen and the audible alarm.
• Press the Push-to-Silence button on the side of the control panel to silence the audible alarm.
• The alarm indication on the screen will remain on until the float switch is lifted.
• The audible alarm will reactivate in 12 hours if the alarm condition is not corrected.
Pump Fault*
• The pump failure is activated when the pump overtemperature sensor, seal failure sensor, or overload
relay has tripped.
• A pump failure will activate the alarm indication on the screen, the audible alarm, and an alarm message
on the user's screen.
• Press the Push-to-Silence button on the side of the control panel to silence the audible alarm.
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