14
Translation of the original instructions
ENGLISH
VERTICAL MULTISTAGE ELECTRIC PUMPS
Case with liquid level below the pump (A in fig. A5):
• Close the delivery valve (8 in fig. A5).
For versions 1/3/6/10:
• Remove the filler cap completely (2 in fig. A3. Loosen the insert on the drain
plug (detail 3 or 4 in fig. A3) to facilitate filling.
• Using a funnel, fill the pump until the water comes out, (it may be required to
repeat the operation several times).
• Tighten the filler and drain caps (tightening torques in fig. A3).
For versions 15/20/30/45/65/95:
• Remove both filler caps completely (2 and 5 fig. A3). Loosen the insert on the
drain plug (detail 3 or 4 in fig. A3) to facilitate filling.
• Using a funnel, fill the pump in one of the two holes until the water comes out
(it may be required to repeat the operation several times).
• Tighten the filler and drain caps (tightening torques in fig. A3)
7.2 Pump start-up
Before start-up check that:
• The electric pump is correctly connected to the power supply,
• The pump is correctly primed (see the previous paragraph),
• The delivery shut-off valve (8 in fig. A5) is closed and the suction valve (4 in
fig. A5) is open,
• Start the motor,
• Gradually open the valve on the delivery side of the pump,
• After a few seconds of noisy operation, the pump must operate silently and
regularly, without any pressure changes through the ejection of any air under
the conditions required.
Otherwise, refer to the troubleshooting table (Chap. 10).
7.3 Emptying the pump
Before operating, make sure that the pump is stopped and check if the
liquid is pressurised.
Should it be required to empty the pump for maintenance or for long periods of
inactivity:
• Close the delivery and suction valves (4 and 8 in fig. A5);
• Discharge the residual pressure in a controlled manner;
• Loosen the pin of the filler cap (A1 or B1 in fig. A5);
• Remove the drain plug completely (A3 or B3 in fig. A5) and wait for emptying;
• Once emptying is complete, reposition and tighten the drain plug and the pin
of the filler cap again (tightening torques in fig. A5).
NOTE: liquid may remain in some internal parts of the pump. For complete
removal it is necessary to fully disassemble the pump.
If the drained liquid may be harmful to people, animals or the environment, it
must be collected and disposed of properly.
8 MAINTENANCE AND SUPPORT
Caution! In the event of an overload shutdown, appliances equipped with
automatic reset circuit breaker switches will automatically restart when
the temperature drops below the danger level.
Before any operation on the electric pump, make sure that the electrical
voltage has been interrupted and that it cannot be accidentally restored
during maintenance operations.
If the electric pump is used for hot and/or liquids that are dangerous for
humans, animals or the environment, strictly notify the personnel who
will carry out the repair. If required, drain and rinse the pump, clean the external
surfaces and collect the liquid in order to guarantee operator safety.
The electric pump does not require any scheduled routine maintenance. Have the
electric pump repaired only by personnel authorised by the manufacturer so as to
keep your warranty valid and not to impair the safety of the appliance. Use only
original spare parts or parts approved by the manufacturer. For spare parts and
special maintenance manuals, contact the Manufacturer. To replace the motor or
mechanical seal, refer to the following paragraphs.
Always use the required PPE (refer to the relevant section).
Regularly check that no condensation is formed in the motor (if there are drainage
holes).
The components that are normally subject to wear are mechanical sealing
devices and bearings if any. Wear is associated with work conditions and loads.
Regular checks on the state of wear and tear of these components will improve
the reliability and increase the service life of the product. Perform checks on a
monthly basis, more frequently if the working conditions so require, and during
the first 500 hours of work.
• After cutting off the power supply, remove one coupling cover guard, check
the shaft passage area for any liquid leaks, these being seal wear indicators.
• During normal operation, pay attention to any abnormal noises and/or
vibrations from the bearings, if any.
Check guards for proper positioning and safety devices for proper operation on
a daily basis.
It is advisable to check the condition of cables (especially at the cable glands)
every month and clean the system filters and/or suction grille.
If the power cable is damaged, it must be replaced by qualified personnel.
For models with a motor with IEC 160 or higher interface: it is recommended
to check the lubrication of the bearing after the first 3000 hours of operation.
Repeat the operation after 3000 hours or adjust the frequency of intervention
in relation to grease consumption. Use SKF LGHP 2 type grease or equivalent.
Contact the Manufacturer for further information.
8.1 Spare parts
Use original spare parts or parts approved by the manufacturer, in order to avoid
any risks to the service personnel’s and users’ health. Contact the supplier and/or
check the spare parts tables attached (fig. A18, A19, A20) for information.
8.2 Motor replacement
For replacement instructions, refer to fig. A14 and A15 (only drawings 1, 2, 16 and
17) in the appendix (according to the model).
If the motor fixing screws are covered by the guards (fig. A15) it is required to
remove the guards to replace the motor.
Restore the guards once the operations are complete.
Apply grease to the shaft of the new motor, over the entire circumference and in
greater quantity on the sides of the feather key. For motors with IEC 71, 80 and 90
interface, use a very high viscosity grease (at least 4000 cSt at 100 °C).
8.3 Mechanical seal replacement
For replacement instructions, refer to fig. A15 and A16 in the appendix (according
to the model).
The guards must be removed to replace the mechanical seal.
Restore the guards once the operations are complete.
See fig. A21 for the spare parts.
9 EMERGENCY MANAGEMENT
9.1 Fire
• The only machine part exposed to a fire hazard is the motor. However, a fire
hazard also exists for materials unrelated to the machine but located close to it.
• In the event of a fire, use extinguishers approved for electrical devices
9.2 Liquid spills
• The pumped liquid may escape from the machine as a result of installation,
start-up, maintenance or disposal, unforeseen breakages or excessive wear of
sealing devices.
• If spills can be dangerous or harmful to human, animal or environmental
health, install a waterproof collecting basin around the machine. Collect the
liquid and dispose of it correctly, without dispersing it in the environment.
10 TROUBLESHOOTING
To fix problems related to electric pump operation, follow the instructions in
Table 1. If you do not have the necessary knowledge and skills, contact qualified
personnel.
Always use PPE (see relevant section) and appropriate tools.
If the problem cannot be solved by following the instructions in the table, contact
a professional, authorised service centre
11 DISPOSAL
The devices marked with this symbol may not be disposed
of in domestic waste but disposed of in appropriate local
collection centres for Waste Electrical and Electronic
Equipment (WEEE), or delivered to the distributor who is
required to collect them.
Domestic WEEE (single-phase electric pumps with <3 kW
power) must be handed in to private or local collection
centres, retailers or repairers, at no cost.
Industrial WEEE (all products not classified as domestic)
must be delivered to specific collection centres or retailers
or repairers.
The product is not potentially dangerous for human health
and the environment as it does not contain any harmful
substances pursuant to Directive 2011/65/EU (RoHS), but if
released into the environment it will adversely impact the
ecosystem.
The illegal or improper disposal of the product involves
severe criminal and/or administrative penalties.
