SAER Elettropompe PMK Series, Руководство пользователя

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7. MAINTENANCE
The MK series pumps and electric pumps can be considered free from routine maintenance. In case extraordinary maintenance is required, get in touch
with the SAER Technical Assistance. Do not modify the product without the necessary preventive authorization.
In the event it is necessary to perform any type of maintenance, the following precautions must be observed:
- disconnect the pump motor from the electrical system;
- wait until the temperature of the liquid is such not to create a danger of burns;
- if the liquid handled by the pump is harmful for one’s health, it is indispensable to observe the following warnings:
- the operator must wear suitable individual protection devices (mask, goggles, gloves, etc.);
- the liquid must be carefully collected and disposed of with respect for current law;
- the pump must be washed inside and out, disposing of the residues as said above.
Lubricating the bearings: the bearings are of the permanently lubricated type (with grease) and, therefore, need no maintenance.
Motor coupling (MK32-40-50-65): see the reference in picture 7b
Motor substitution (MK32-40-50-65): see the reference in picture 7a and 7b
Mechanical seal substitution (MK32-40-50-65). See picture 8
8. DECOMISSIONING AND DISPOSAL
At the end of the operating life of the pump/electropump or any of its parts, it must be disposed of in observance of current regulations. This is also valid
for the liquid contents, with particular regard if classi
fi ed toxic or harmful, and for packaging.
9. TROUBLESHOOTING
PROBLEMS
CAUSES REMEDIES
The motor doesn’t start and there is no noise or vibration
No voltage in the motor cable. Check the device and/or electric line.
The fuses are burnt out. Replace the fuses with others of the same value.
Motor cable interrupted. Repair or replace the cable.
Motor broken. Replace the motor.
The motor doesn’t start and there is noise and/or vibration
The motor was incorrectly connected. Correct the incorrect connection (see “Electrical connection”).
The condenser is broken (for single-phase motor). Replace the condenser.
The rotating part is hindered. Disassemble and remove the cause.
The electrical protection devices are triggered
The power supply voltage does not match that shown on the motor plate. Change voltage or motor.
A cable is grounded or has a short-circuit.
Repair or replace the cable.
The winding is grounded. Disassemble the motor and repeat the winding or replace the motor.
Cable terminals loose. Tighten all the terminal clamps.
The rotating part is blocked. Disassemble and remove the cause.
Excessive amount of sand in the water. Reduce the fl ow rate using the delivery shutter.
Density and/or viscosity of liquid too high. Contact the manufacturer.
Insuf fi cient or no fl ow rate
The pump was not correctly fi lled with liquid. Fill the pump.
The intake pipe is narrow or has leaks. Replace the pipe or gasket.
The foot valve is clogged. Clean or replace the valve.
Impeller obstructed. Disassemble and overhaul.
Head less than declared
Incorrect rotation direction. Change the rotation direction.
Leaks in the delivery pipe. Replace the damaged pipe or gasket.
Inside parts worn. Disassemble and overhaul.
Air or gas in the water. Contact the manufacturer.
The pump operates irregularly and/or vibrates.
Pump operating with head too low. Adjust the shutter on the delivery pipe.
Mechanical parts worn. Disassemble and overhaul.
System NPSH is insuf fi cient. Reduce the fl ow rate.
Lower the installation level.
In the event of dif fi culty in identifying the cause and/or remedy, we recommend you contact our customer support department.
10. SPARE PARTS
Use only original spare parts. To order spare parts, refer to the catalogues or contact the SAER Technical Assistance specifying the kind of pump, the serial
number and the year of manufacture (all these data are to be found in the identi
fi cation plate).
This product is free from manufacturing defects.