MTRA-FSP Installation & Operation Manual
Page 10 of 16
00242600-MTRA-FSP_Manual.doc
5.2 Fill (Charge) Mode
Fill (Charge) mode is used to fill up a well with liquid when the level falls to a
preset level. In this mode the relay operates as follows:
•
The pump activates when the liquid reaches the low level probe.
•
The low level alarm probe will operate the Alarm Relay and also the
Pump Relay (in case the low level probe has failed).
•
The pump will continue to operate until the liquid level rises to the high
level probe and the pump deactivation period expires.
•
A thermal fault will deactivate the pump regardless of liquid level.
•
A Probe Failsafe alarm will deactivate the pump regardless of liquid
level.
Note:
Assumed Probe Faults:
If a High Level, or High Alarm input is activated and the Low Level probe
is deactivated, then the relay assumes the Low Level probe is faulty.
In this situation the relay will wait for 60 seconds after the High Level
input has deactivated, then start the pump. The Probe Fault LED will
turn ON to indicate an Assumed Probe Fault.
