Form 924 (05.18) ©SOR Inc.
9/16
Perform set point calibration per instructions.
Locate the DIFFERENTIAL adjustment (See
), and rotate the screw head fully
counterclockwise. Stop when you hear a small click.
Move the process level to the point where the adjustable differential will be set.
Turn the screw head of the DIFFERENTIAL adjustment clockwise until you see the
LEVEL LED change from on to off, or off to on. You will also hear a click as the relay
contacts change state.
Adjustable Differential Calibration (AD accessory)
FAILSAFE LO
Move the process to the level where switching is needed, and move the FAILSAFE
switch to LO.
If the green LVL LED is off, turn the LEVEL adjustment clockwise until the LED just lights.
If the green LED is on, turn the LEVEL adjustment counterclockwise until the LED turns
off. Then turn another 1/4 turn clockwise or until the LED just lights.
FAILSAFE HI
Move the process to the level where switching is needed and move the FAILSAFE
switch to HI.
If the green LED is on, turn the LEVEL adjustment clockwise until the LED just turns off.
If the green LED is off, turn the LEVEL adjustment counterclockwise until the LED
lights. Then turn another 1/4 turn clockwise or until the LED just turns off.