Inverter Powered Electric Motor; Rotation Direction; Startup; Preliminary Checks - FPZ SCL 10DL-MD MOR Instructions

The connection must ensure:

lasting safety over time.

The ends of the wires must not protrude.

The fuses only protect against short circuits and not the motor.

Fuse ratings must take account of peak currents, especially in case of direct starting.

The protection with motor circuit breaker (thermal or amperometric) is essential against the risks of overload, in the absence of a
mains phase, excessive voltage fluctuation or stuck rotor.

Adjust the motor circuit breaker to the rated current as the maximum value.
11.3.2

INVERTER POWERED ELECTRIC MOTOR

ATTENTION!
When powered by an inverter, the unit's nominal pressure or vacuum characteristics cannot be maintained.
For the performance of an inverter powered unit, contact the FPZ after-sales service.
The power supply via inverter is always the responsibility of the installer, who must ensure compliance with the standards and:

checking and any measures necessary to comply with the limits of immunity and emission laid down by the standards;

checking the suitability of the system and the inverter for operation with standard motors, i.e. class F, or the need for specific
motors for these types of operation.
11.3.3

ROTATION DIRECTION

SCL K blowers - exhausters must be used with the rotation direction indicated
by the arrow on the electric motor fan cover.

To check the rotation direction, switch the motor on briefly and observe the
fan.

To change the rotation direction, invert the power cable connections,
leaving the earth connection unchanged.
(Refer to the connection diagram located in the terminal box)
ATTENTION!
The position of the motor does not always allow the rotation direction to be checked, therefore it is advisable to do this check before
installation of the system.
12

STARTUP

Non-compliance with the unit's intended use can cause serious accidents.
The unit must only be started:

after carefully reading, understanding and complying with this user manual ("SAFETY RULES" and "INSTALLATION");

in conformity with its intended use as prescribed in "FORESEEN USE";

respecting the values given in the "SPECIFICATIONS".

12.1 PRELIMINARY CHECKS

Before starting the machine for use, carry out the following preliminary checks:

If the unit has not been started up for some time, check its condition and, if necessary, remove any dust from the external surfaces;

Deactivate/open any pipe closing devices (shut-off valves, solenoid valves, etc.) before starting the unit.

Never start and operate the unit with the inlet and/or outlet port closed!

Make sure the ambient and conveyed gas suction temperatures come within the values: -15°C (+5°F)÷ +40°C (+104°F);

Check correct operation of the pressure-relief valve (not supplied).

12.2 OPERATION

The unit can be started for use after carrying out the preliminary checks.

Start the unit by switching on the power to the electric motor.

Check the operating pressure or vacuum and also compliance with the values given in the "SPECIFICATIONS". Pressure losses in
the pipes are often underestimated but are decisive factors for the operating differential pressure.
FPZ-MI-10DL-15DH-MD-MOR-EU-15-R01 32 / 102