CO3 / 110

Operating Principle

• Booster systems: When pressure falls below the lower set-point, the panel starts the first pump; if demand persists it brings in additional pumps sequentially. As pressure rises past the upper set-point, pumps drop out in the same order until the standby arrangement is restored. Duty rotation at each new start spreads wear evenly.

• Dry-run protection: A minimum-level float switch inhibits pump operation if the suction tank empties.

Product Features and Benefits

• Hand-0-Auto selector for every pump

• Contact-manometer pressure sensing—no electronics required

• Dry-run float switch interlock

• Automatic duty rotation and standby change-over on fault

• Adjustable start/stop delay timers to prevent rapid cycling

• Individual run lamp & fault lamp per pump

• Individual run and fault relay outputs for BMS integration

• Common low-level lamp for quick tank-level status

• Sturdy steel enclosure, IP54

Control and Signal Functions

• External dry-contact Run / Stop command

• SSM common fault relay (NC)

• SBM common run relay (NO)

• Separate fault relay per pump

• Separate run relay per pump

Options / Accessories (factory-fitted on request)

• Panel-cooling fan

• Lockable main isolator switch

• PTC thermistor relay for motor protection

• Soft-starter for reduced inrush current

• Front-panel multifunction power meter / multimeter