Grundfos SLC Series Installation And Operating Instructions Manual page 28

9.7.3 DLC, float-switch-controlled option
The control panel supports two different modes of operation based on selected parameter settings. See section
parameters for information on how to change the mode of operation and other adjustable parameters.
Your control panel can perform the functions listed below. Depending on the application, some functions may be omitted or combined.
• This float switch activates the alarm indication on the screen and the audible alarm when lifted for
High Level 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 lowered, and the audible alarm
• This float switch starts the lag (standby) pump when lifted (both pumps will be on).
Lag Pump On
• Both pumps will run until the pump(s) off float switch (if used) is lowered.
• This float switch starts the lead (duty) pump when lifted.
Lead Pump On • The pump will run for the duration of the minimum run time or until the pump(s) off float switch (if used)
Pump(s) Off • This float switch stops the pump(s) when lowered if the minimum run time has elapsed.
• The pump failure is activated when the pump overtemperature sensor, seal failure sensor, or overload
Pump Fault* • A pump failure will activate the alarm indication on the screen, the audible alarm, and an alarm
• Press the Push-to-Silence button on the side of the control panel to silence the audible alarm.
* 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.
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longer than the high-level alarm delay.
will reactivate in 12 hours if the alarm condition is not corrected.
is lowered.
relay has tripped.
message on the user's screen.
9.9 Adjustable