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en – Original instructions
SCUBA – Additional Installation, Operation and Maintenance Instructions
21
5
Use and operation
5.1
Precautions
DANGER: Electrical hazard
Do not use the unit in swimming pools or similar places when people are inside.
WARNING:
Make sure that the drained liquid cannot cause damage or injuries.
WARNING: Electrical hazard
Check that the unit is properly connected to the mains power supply.
WARNING: Injuries hazard
The unit, equipped with a single-phase motor with automatic reset thermal overload
protection, could restart inadvertently after it has cooled down: risk of physical injury.
WARNING:
It is prohibited to put combustible materials near the unit.
NOTICE:
The unit must be submerged in the liquid at a depth of at least 15 cm (6 in) before startup.
NOTICE:
Dry run of the unit is forbidden.
NOTICE:
It is prohibited to operate the unit with the on-off valve closed.
NOTICE:
Make sure that there is no residual air inside the unit after being submerged in the liquid.
5.2
Rotation direction check (three-phase motors)
1.
Submerge the unit in the liquid at a depth of at least 15 cm (6 in).
2.
Start the unit.
3.
Check the discharge pressure gauge:
•
If pressure is detected, the motor rotation direction is correct
•
If no pressure or low pressure is detected, the motor rotation direction is wrong.
4.
Stop the unit.
5.2.1
Wrong rotation direction
1.
Disconnect the power supply.
2.
Invert two of the three wires of the power supply cord.