Pentax ULTRA HS-HX Manuel D'utilisation Et D'installation page 17

Use and installation instruction manual
• 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 to eject 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 liquids 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.
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 thrust bearing unit 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 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 (motors above 11 kW),
it is recommended to check the lubrication of the thrust bearing. Follow the
instructions for THRUST BEARING LUBRICATION.
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. A23, A24, A25, A26) for information.
8.2 Removing the motor
8.2.1 Pumps without a thrust bearing unit up to 4 kW (fig. A14)
Remove the coupling cover guards.
Release the three grub screws of the rotating part of the mechanical seal. NB: It
is sufficient to loosen them by a quarter turn. If they are loosened excessively, the
grub screws will lose their coupling with the mechanical seal.
Loosen the screws that secure the motor to the pump.
Loosen the coupling screws and remove the two parts of the coupling.
Remove the motor.
8.2.2 Pumps with a thrust bearing unit up to 4 kW (fig. A15)
Remove the coupling cover guards.
Release the three grub screws of the rotating part of the mechanical seal. NB: It
is sufficient to loosen them by a quarter turn. If they are loosened excessively, the
grub screws will lose their coupling with the mechanical seal.
Loosen the screws that secure the motor to the pump.
Loosen the coupling screws and remove the extractable part.
Remove the pin from the shaft.
Remove the motor and the thrust bearing unit.
Tighten the screws in the threaded holes in order to separate the motor from the
thrust bearing.
8.2.3 Pumps above 4 kW (fig. A20)
Loosen the screws that secure the motor to the pump.
Remove the motor. NB: Check that the flexible coupling insert is inside the hole in
the intermediate shaft of the pump. Reposition, if necessary.
8.3 Installing the optional thrust bearing unit
Only for pumps up to 4kW without a thrust bearing unit.
Follow the instructions to REMOVE THE MOTOR.
Follow the instructions for INSTALLING THE THRUST BEARING UNIT AND MOTOR
(Chap. 6).
8.4 Mechanical seal replacement
See fig. A26 for the spare parts.
8.4.1 Pumps up to 4 kW (fig. A16)
Follow the instructions to REMOVE THE MOTOR.
Loosen the mechanical seal cartridge.
Lubricate the shaft and thread with alcohol. Clean any residues.
Insert the new cartridge and tighten to the indicated tightening torque.
Follow the instructions for INSTALLING THE MOTOR (Chap. 6).
8.4.2 Pumps above 4 kW (fig. A21)
Remove the coupling cover guards.
Release the three grub screws of the rotating part of the mechanical seal. NB: It
is sufficient to loosen them by a quarter turn. If they are loosened excessively, the
grub screws will lose their coupling with the mechanical seal.
Loosen the coupling screws and remove the coupling.
Remove the pin.
Loosen the mechanical seal cartridge.
Lubricate the shaft and thread with alcohol. Clean any residues.
Insert the new cartridge and tighten to the indicated tightening torque.
Insert the pin in the shaft and in the hole of a part of the coupling.
Lift the coupling until it couples to the intermediate shaft's shoulder. The coupling
must remain in position once released. Couple the second part of the coupling.
Insert the screws and tighten them to the indicated tightening torque, making
sure to keep the two parts of the coupling symmetrical.
Tighten the three grub screws of the rotating part of the mechanical seal.
Check: manually turn the shaft and pay attention to any metallic noises, indicating
potential coupling problems. If so, contact the Manufacturer.
Install the coupling cover guards.
8.5 Motor replacement
Follow the instructions to REMOVE THE MOTOR.
8.5.1 Pumps without a thrust bearing unit up to 4 kW
PREPARATION OF THE MOTOR (fig. A17)
Extract the lowered tab from the old motor.
Remove the unified tab from the new motor, if applicable.
Install the lowered tab into the shaft slot of the new motor.
Follow the instructions for INSTALLING THE MOTOR (Chap. 6)
NB: before disposing of the old motor, make sure to extract the lowered tab from
the shaft's slot and keep it.
8.5.2 Pumps with a thrust bearing unit up to 4 kW
Follow the instructions for REMOVING THE THRUST BEARING UNIT (fig. A15).
Follow the instructions for INSTALLING THE THRUST BEARING UNIT AND MOTOR
(Chap. 6).
8.5.3 Pumps above 4 kW (fig. A20)
Follow the instructions to REMOVE THE MOTOR.
Follow the instructions for INSTALLING THE MOTOR.
8.6 Lubricating the thrust bearing
Only for pumps above 11 kW:
The thrust bearing unit must be lubricated at intervals related to the criticality of
the application, number of pump stages and work (pressure) and environmental
(temperature) conditions. It is recommended to perform a first inspection after
3000 hours of operation. Then adjust the lubrication interval in relation to the
amount of grease inserted and the work conditions (maximum temperature and
pressure). Proceed as follows:
Follow the instructions to REMOVE THE MOTOR.
ENGLISH
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