Level Control; Motor Temperature - SFA Sanipump VX 50 Bedienungs- Und Installationsanleitung

Pump sets with single-
phase AC motors
Pump sets with three-phase
motors
5 Installation at Site

5.4.1.2 Level control

DANGER
Pump set running dry
Explosion hazard!
▷ Never allow a pump set to run dry.
CAUTION
Fluid level below the specified minimum
Damage to the pump set by cavitation!
▷ Never allow the fluid level to drop below the specified minimum.
Automatic operation of the pump set in a sump / tank requires the use of level
control equipment.
Observe the minimum fluid level indicated.
5.4.1.3 Sensors
DANGER
Operating an incompletely connected pump set
Damage to the pump set!
▷ Never start up a pump set with incompletely connected cables or non-
operational monitoring devices.
On pump sets with with single-phase AC motors, a thermal motor protection device is
integrated in the motor.
Pump sets with three-phase motors are not equipped with integrated thermal motor
protection devices.
For information on wiring and core identification please refer to the Annex "Wiring
diagrams".

5.4.1.4 Motor temperature

CAUTION
Insufficient cooling
Damage to the pump (set)!
▷ Never operate a pump (set) without operational temperature monitoring.
The thermal motor protection device stops the pump if the maximum permissible
motor temperature is reached and re-starts it automatically after the motor has
cooled down. The pump's power supply must be protected by a circuit breaker set to
the rated motor current or a 10A fuse.
The motor is not equipped with an integrated thermal motor protection device. We
recommend to use a control unit with an integrated circuit breaker set to the rated
motor current +15 %.
Sanipump VX 50
73 of 331