caprari K+ Serie Manual De Uso Y Mantenimiento página 24

K.M150N.. / K.M100N.. / K.W100N.. / K.D200N.. / K.M200P.. / K.D250P..
8. FIELDS OF USE
These electric pumps have been designed to convey clean and dirty water, sewage containing solid matter and fiber, sludge and organic material.
Electric pumps with single-channel impellers (M) are more suitable for work with fluids containing short-fiber solids while the vortex impeller (V,W)
is more suitable for work with long-fiber solids or fluids containing gas, crude or fermented sludge. Typical fields of use are: drainage, depuration,
reclaiming and general conveying of fluids.
9. INADVISABLE USES
GB
The standard versions of these electric pumps are unsuitable for operation with fluids for edible use. Contact Caprari S.p.A before using the pumps
in these sectors.
Standard electric pumps cannot be used to pump inflammable or explosive liquids and cannot be installed in areas where there is a classified risk of
explosion. Use of the flameproof pump version should be considered in these cases.
These electric pumps cannot be used in tanks or places where they could come into contact with parts of the human body.
10. TECHNICAL AND OPERATIVE FEATURES
Electric motor, asynchronous three-phase, with squirrel cage rotor, insulation in class H (180°C/355 F max) for K..N3 / X3, submersible with IP68
protection degree according to the IEC 529 or IP58 standards, according to the EN 60034-5 standards, continuous or intermittent service. For this
series of submersible motors, the data relating to the S3 intermittent service is not provided as if it is foreseeable that the motor becomes uncovered
during operation, the cooling system must be activated.
The power draw indicated on the data plate is slightly higher than the value given in the technical documentation supplied by Caprari as it also
accounts for the differences created by mass production of the electric pump.
The tolerance values established by standard IEC 34.1 (CEI - EN 60034-1) are valid for all the electric pumps. The hydraulic performances are
established by ISO 9906 standards.
The data measured may also differ owing to inaccuracies in the measuring instruments used for checking and/or to electricity mains with
characteristics (voltage/frequency/unbalances) differing from those indicated.
Maximum number of starts per hour: 20 up to 5kW, 15 up to 10kW, 10 for higher power ratings.
Variation to the power supply voltage in relation to the rated voltage value: +/- 5%
For motors with 230/400V or 400/700V voltage only, a deviation of ±10% is permitted as they can also be used at the nominal voltages of 220, 240,
380 and 415V.
Maximum permissible power draw deviation: 5%
It is essential to comply with the minimum head value to ensure the motor is correctly cooled.
Min.immersion depth:
Max. immersion depth:
Maximum operating pressure: 80 m.w.c.
Temperature of pumped fluid: -20°C ÷ 40°C
pH of pumped fluid:
The pumped fluid may contain solids in suspension. The size of these solids may not exceed the open passage in the pump.
Contact our technical department when the fluid possesses a density exceeding 1 kg/dm
When the electric pump is installed according to the instructions given in this manual and in compliance with the diagrams, the acoustic pressure
level issued by the machine within the given field of operation will never ever exceed 80dB (70 dB in a submersed installation). The noise level was
measured according to ISO 3746 standards and the gauging points were 1 m from the reference surface of the machine and 1.6 m from ground or
access platform level.
11. FORBIDDEN USES
To ensure correct and completely safe operation, never exceed the characteristics listed in paragraph 11 or the maximum performance
characteristics given on the electric pump data plate.
12. SAFETY REGULATIONS
Only specialized technicians equipped with adequate tools and fully familiar with the instructions in this manual may be allowed to work on the
electric pump.
Always comply with the rules of hygiene, accident prevention and safety provisions when installing a new pump or during maintenance operations,
and comply with the local provisions and regulations in order to prevent accidents. The purchaser shall be responsible for compliance with these
safety provisions and instructions.
It is particularly necessary to comply with the following recommendations:
1. - Inspections of the systems:
1.1. - In view of the varying nature of the conveyed fluids, always wear appropriate clothing and footwear in order to prevent the skin from touching
contaminated equipment or liquids.
1.2. - The technicians working with the pumps must be vaccinated against the possible illnesses that could be caught following injury, contact or
inhalation.
1.3. - Before proceeding with any work on the pumping station, check that all electrical cables entering the tank are disconnected from their relative
power supplies.
1.4. - If it is necessary to work in the tank, provide for adequate ventilation in order to ensure that there is sufficient oxygen and no toxic and/or
explosive gas. In all cases, check:
- that the descending and ascending means are efficient;
- that anyone lowered into the tank is equipped with safety harness;
- that there is always a worker outside the tank (never ever work alone even in optimum conditions) able to immediately act on the harness
lifting ropes;
- that the area is adequately restricted by barriers and signs;
- that there is no risk of explosion from using electrical equipment or carrying out operations that involve flames or sparks.
1.5. - To remove the electric pump from its housing, first disconnect the electric cables from the control panel and operate the lift as indicated on
page 10 (Fig. 2). Use a jet of clean water outside and inside the electric pump in order to wash off all residuals of the pumped fluid. Always
wear accident-preventing goggles, rubber gauntlets, mask and a waterproof apron when carrying out these operations.
2. - Inspections of the equipment from a pumping station:
- the electric pump or any accessory from a trap must be thoroughly cleaned in all parts using water or specific products before being subjected
to any operation;
- if the electric pump is dismantled, always wear work gloves when handling the parts;
- check the insulation degree of the electric motor and the efficiency of the grounding system before subjecting it to any live tests.
3. - Inspection of the electric pump:
- the temperature of the external surface of the motor can exceed 80°C. Take the necessary precautions to avoid burns.
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complete coverage of the motor in the absence of activation of the cooling, level near the oil box
with the cooling system activated (always check the NPSH) (see indication on page 116).
20 m
6 ÷ 10
and/or a viscosity exceeding 1 mm
3
/s (1 cSt).
2
Caprari S.p.A.