Flowline LU78 EchoSwitch - Manual (Page 8)

8 of 34 MN300282 Rev A
GETTING STARTED (continued) Step Four
 FILL – used to control a pump that fills a tank.
 Typically, Relay ON is the LOW set point and Relay OFF the HIGH set point. Relay will
energize at the low set point (ON) and remain on until the level reaches the high set
point (OFF) and will remain off until the level returns to the low set point (ON).
 DELAY – used as a start pump delay when the ON setting is reached. The delay pump (in
seconds) will delay the start of the value for this period.
o VALVE – Valve operation allows for two separate level set points (Relay ON and Relay OFF). Choose
between the EMPTY or FILL operation. Both operations require setting a level for ON and another
level for OFF
 EMPTY – used to control a valve that empties a tank.
 Typically, Relay ON is the HIGH set point and Relay OFF the LOW set point. Relay will
energize at the high set point (ON) and remain on until the level reaches the low set
point (OFF) and will remain off until the level returns to the high set point (ON).
 FILL – used to control a valve that fills a tank.
 Typically, Relay ON is the LOW set point and Relay OFF the HIGH set point. Relay will
energize at the low set point (ON) and remain on until the level reaches the high set
point (OFF) and will remain off until the level returns to the low set point (ON).
 DELAY – used as a start valve delay when the ON setting is reached. The delay value (in
seconds) will delay the start of the value for this period.