Discharge Pipe Assembly; Electrical Connection; Pre-Start Checks; Starting - Espa DRAINEX 400 Manual De Instrucciones

5.2. Discharge pipe assembly

In cases in which the discharge run is lengthy or
sinuous, we recommend using lines with a larger
diameter than the discharge mouth, to avoid head
loss due to friction as much as possible and to obtain
the best hydraulic performance possible.
Install a check valve to the outlet of the pump and you
will prevent pipe from emptying each time pump stops.
The check valve must permit the passage of solids.
Ensure that the pipe is not bent and that is correctly
secured to the outlet connection because, in addition
to preventing the desired flow, proper pump
operation will be hindered.

5.3. Electrical connection

The electrical installation must have an
effective earth and comply with the national
regulations in force.
The protection of the system will be based on
a differential switch (Δfn = 30mA) in addition
to a multi-pole isolator with a minimum 3 mm
contact openings,
Pumps assembled with a starting control box or fitted
with a capacitor are supplied ready for operation.
In the case of three-phase pumps the user must provide
the protection system.
All pumps must be connected to a control panel fitted
with a motor protector. ESPA control panels are built
in. The panel comes with the operating instructions
and technical information.

5.4. Pre-start checks

The fitter must use a liquid level detection system to
ensure that the pump remains submerged at all
times.
Pumps are supplied with thermal protectors in their
windings. The latter must be connected to a
protective switch so that the pump is disconnected
before the winding reaches the maximum permitted
temperature. Regulations do not permit automatic
reconnection, so the control panel must also be
equipped with a system to prevent automatic
resetting.
ESPA control panels are equipped with all the safety
devices mentioned.
See connections diagram (Fig. 2).
THIS PUMP MUST NEVER BE DRY RUN.
5.5. Checks prior to initial start-up
ATTENTION. Check that the mains voltage
and frequency coincide with those shown on
the nameplate.
The pump must work in a fully submerged position to
achieve optimal cooling. See (Fig. 4)
THE PUMP MUST NEVER OPERATE WITHOUT
WATER.

6. STARTING

If there is a line valve, open it completely.
Connect the electrical panel plug into a socket. If there
is an appropriate level of water, the motor will
immediately start up.
Check that the absorbed current is the same as
marked on the name plate.
If the motor does not start or no water flows at the
end of the line, try to find the anomaly using the
troubleshooting guide in point 8.
In the case of three-phase pumps check that the turning
direction corresponds to the direction marked by the
arrow situated in the suction cone. (fig. 4)
Contact with the rotating impeller may cause
serious injury.

7. MAINTENANCE

7.1. General indications

Disconnect the pump from the mains before
performing any operation whatsoever.
Under normal conditions these pumps require
no special or planned maintenance.
During frosty periods, remember to drain the
line.
If the pump is not going to be operated for a
long period of time, it is recommended to
remove the tank, clean it and store it in a dry,
well ventilated place.
To unclog or clean the impeller, it is only
necessary to raise the suction cone. To do this,
unscrew the screws that fasten the legs. The
cover assembly must come off as a whole
(fig.4).
ATTENTION: In the event of faults or damage
occurring to the pump, repairs should only be
carried out by an authorised service agent.
The Official Technical
www.espa.com.
7.2. Maintenance / inspection
Maintenance must be carried out exclusively by
a specialist.
Annual checks:
Check the power consumption, comparing it to the
plate showing the characteristics of the pump.
Bearings and lubrication:
The bearings are supplied greased. They do not
require subsequent lubrication.
To ensure that the bearings work properly, check
whether the axis produces noise or does not rotate
smoothly.
Wire inlet and suspension chain:
Visually check that the wire inlet is sealed and that
the wire is not bent or pinched.
Check that the chain is secured properly and that
is not damaged.
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Services list is in
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