SOR 1780 Wireless Level Switch - Manual

Form 1564 (09.14) ©SOR Inc. 1/4
The SOR ® 1780 Level Switch is a horizontally mounted, float-operated level switch. The
1780 is suitable for plant and OEM applications to detect presence or absence of liquid at a
discrete level.
When the liquid rises, the float extension arm moves a magnet that repels an internal
magnet de-actuating the wireless unit. When the liquid level falls, the float extension arm
moves in the opposite direction, actuating the wireless unit. The 1780 is recommended for
use in clean liquids only.
1780 Wireless
Level Switch
General Instructions
Registered Quality System to ISO 9001
Design and specifications are subject to change without notice.
For latest revision, go to sorinc.com
NOTE: If you suspect that a product is
defective, contact the factory or the SOR
Representative in your area for a return
authorization number (RMA).
This product should only be
installed by trained and
competent personnel.
Mounting

Verify that obstructions are not present in the application that would prevent free float
movement throughout the entire range of motion.

Assure that the mounting provides a horizontal alignment of the switch.
Use a 2” open end wrench on the two flats next to the process connection. Tighten the unit
onto the process connection by rotating clockwise.

To ensure proper operation, the unit must be mounted with either wrench flat horizontal ±1°.
(See ).The unit can be mounted with either wrench flat horizontal ±180°

Mount the wireless unit using the two supplied M6X10 screws. Tighten using a 5mm
hex wrench.

Setup and calibrate the wireless unit according to the separtely supplied instructions.

Test the units action by varying the liquid level in the tank.
Counterbalance area must be free from metallic particles that may attract to
magnetic components in the 1780 model.