ENGLISH
22
Failure to observe the warnings may create situations of risk for persons or property and will void the product
guarantee.
RESPONSIBILITY
The Manufacturer does not vouch for correct operation of the electropumps or answer for any
damage that they may cause if they have been tampered with, modified and/or run outside the
recommended work range or in contrast with other indications given in this manual.
The Manufacturer declines all responsibility for possible errors in this instructions manual, if due to
misprints or errors in copying. The Manufacturer reserves the right to make any modifications to
products that it may consider necessary or useful, without affecting their essential characteristics.
POTENTIALLY EXPLOSIVE ENVIRONMENTS
Use explosion-proof pumps for applications in potentially explosive environments.
FKV and FKC pumps must under no circumstances pump combustible liquids.
The classification of the installation site must be approved by the local fire-fighting authorities
in each individual case
Special conditions for safe use of FKV and FKC explosion-proof pumps:
1. Make sure that the thermal switches are connected in the same circuit but have separate alarm
outputs (motor cutout) in the event of a high temperature in the motor.
2. Bolts used for replacement must be class A2-70 or better according to EN/ISO 3506-1.
3. Contact the manufacturer for information on the dimensions of the flameproof joints.
4. THE PUMP MUST ALWAYS BE SUBMERGED WHEN WORKING. The level of pumped liquid
must be controlled by two level switches connected to the motor control circuit. The minimum level
depends on the installation type and is specified in these installation and operating instructions.
5. Make sure the permanently attached cable is suitably mechanically protected and terminated in a
suitable
terminal
board
placed
outside
the
potentially
explosive
area.
The pump is supplied with an appropriate power supply cable.
6. The sewage pumps have an ambient temperature range of -20 °C to +40 °C and a maximum
process temperature of +40 °C. The minimum ambient temperature for a pump with a water-in-oil
sensor is 0 °C.
7. The thermal protection in the stator windings has a nominal switch temperature of 130°C and must
guarantee the disconnection of the power supply; the power supply must be reset manually.
2. GENERAL DESCRIPTION
This manual contains the instructions for the installation, operation and maintenance of submersible pumps of
the FK series. The pumps are equipped with electric motors with power between 1.1 and 11 kW.
The pumps in the FK series are designed and suitable for pumping domestic and industrial sewage and waste
waters compatible with the materials of which the pumps are made.
The pumps can be installed on an auto-coupling system or stand freely on the bottom of a tank.
The booklet also includes specific instructions for the explosionproof pumps.
TECHNICAL CHARACTERISTICS
Consult the Instructions Booklet and the data plate to check the following technical data:
- Electric Power Supply.
- Construction Characteristics.
- Hydraulic Performance.
- Working Conditions.
- Pumped liquids.
