Inverter Powered Electric Motor; Rotation Direction; Startup; Preliminary Checks - FPZ SCL K04 MS-GOR Betriebsanleitung

Danger due to electricity!
• Before starting work on the unit or system, take the following precautions:
- make sure the machine is NOT powered;
- take steps to prevent the power from being reconnected;
• The terminal box must not contain:
- foreign bodies;
- impurities;
- moisture.
Close the terminal box with the lid and seal the openings of the cable glands to prevent dust, water and moisture from entering.
Install the motor circuit breaker.
ATTENTION !
In case of various motor starts in the space of an hour, there are limitations which can seriously damage the unit if ignored. Regarding
this, refer to the electric motor instruction manual.
12.5.1

INVERTER POWERED ELECTRIC MOTOR

ATTENTION !
When powered by an inverter, the unit's nominal pressure or vacuum characteristics can vary.
For the performance of an inverter powered unit, contact FPZ customer care.
The power supply via inverter is always the responsibility of the installer, who must ensure compliance with the standards and also:
•
Checks 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.
12.5.2

ROTATION DIRECTION

SCL K / R 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 inside 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.
13

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".

13.1 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! (if not foreseen).
•
Make sure the ambient and conveyed gas suction temperatures come within the values: -15°C (+5 °F)÷ +40°C (+104 °F).
•
Check the proper operation of the flow limiter valve (supplied on request).
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