DAB FEKA VS Instructions De Mise En Service Et D'entretien page 7

6. CHECKING THE DIRECTION OF ROTATION (for three-phase motors)
Fig.4
If it is not possible to check as described above because the pump is already installed, check as follows:
1. Start the pump and observe the water flow rate.
2. Stop the pump, switch off the power and invert two phases on the supply line.
3. Restart the pump and check the water flow rate again.
4. Stop the pump.
The correct direction of rotation will be the one corresponding to the HIGHEST flow rate and the LOWEST power
consumption!
7. STARTING UP
Models with a float switch start up automatically when the water level rises; models without a float are started by means of a switch located
upstream from the socket (not supplied).
Fig.5
8. PRECAUTIONS
8.1 The intake strainer must always be in place during pump operation.
8.2 The pump should not be started more than 20 times in one hour so as not to subject the motor to excessive thermal shock.
8.3 DANGER OF FROST: When the pump remains inactive for a long time at temperatures of less than 32°F (0°C), it is necessary to
ensure that there is no water residue which could freeze and cause cracking of the pump components.
8.4 If the pump has been used with substances which tend to form a deposit, rinse it after use with a powerful jet of water so as to avoid the
formation of deposits or scale which would tend to reduce the yield of the pump.
8.5
Connect pumps that are delivered without cable and/or plugs to an external
mains switch with a minimum contact gap of 0.12" (3 mm) in all poles.
9. MAINTENANCE AND CLEANING
In normal operation, the pump does not require any specific maintenance, thanks to its mechanical seal lubricated in an oil chamber
and to its sealed-for-life bearings. The electropump must not be dismantled unless by skilled personnel in possession of the
qualifications required by the regulations in force. In any case, all repairs and maintenance jobs must be carried out only after having
disconnected the pump from the power mains.
During disassembly, pay attention to any sharp parts which could cause injury.
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The direction of rotation must be checked each time a new installation is made.
Proceed as follows (Fig.4):
1. Place the pump on a flat surface.
2. Start the pump and stop it immediately.
3. Carefully observe the kick-back on starting, looking at the pump from the motor side. The direction of
rotation is correct, that is clockwise, if the protection cap moves as in the drawing (anti-clockwise).
Adjusting the float switch
Lengthening or shortening the cable between the float and the fixed point (slot provided in the handle - Fig.5)
adjusts the START or STOP level of the pump. Be sure that the float can move freely.
DRENAG  Ensure that the stop level does not uncover the strainer.
FEKA VS-VX 550-750  Minimum stopping level 1.21 ft (370 mm) from the bottom.
FEKA VS-VX 1000-1200  Minimum stopping level 1.31 ft (400 mm) from the bottom.
Checking and changing the sealing oil FEKA VS-VX
16
To perform this operation, slacken the six screws (45) so as to be able to remove the strainer
64
cover , the strainer and the pump body (1). Retain the O-ring (28) and the nuts (51). Using a
45
suitable spanner, unscrew the impeller retaining nut (18), holding the impeller (4) still with
4
your hand. Retain the key (17) and the sand guard (15). Now overturn the pump with the
1
hydraulic part facing upwards, unscrew and remove the drainage cap (64).
Tilt the pump so as to let the oil flow out of the drainage hole (64) and catch it in a container.
Analyse the oil: if you find any particles of water or abrasive materials (for example, sand) it is
advisable to check the condition of the mechanical seal (16) and to have it changed if
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necessary (at a specialized centre). In this case change the oil too, with about 170 gr of oil
type MARCOL 152 ESSO.
Top up the oil level inside the sealing oil chamber using a special funnel inserted in the hole
in the cap (64). Screw the drainage cap (64) back on and perform the disassembly
operations in inverse order to reassemble the pump after having spread a suitable amount of
Fig.6
teflon grease in the seat of the sand guard (15).
OLD OIL MUST BE DISPOSED OF AS REQUIRED BY THE REGULATIONS IN FORCE.
ENGLISH
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