SAER Elettropompe MK Serie Mode D'emploi page 16

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 (MK32-40-50-65-100): see the reference in picture 7b
Motor substitution (MK32-40-50-65-100): see the reference in picture 7a and 7b
Mechanical seal substitution (MK32-40-50-65-100). 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 classified toxic or harmful, and for packaging.
9. TRoUBLESHooTING
PRoBLEMS
CAUSES
The motor doesn't start and there is no noise or vibration
No voltage in the motor cable.
The fuses are burnt out.
Motor cable interrupted.
Motor broken.
The motor doesn't start and there is noise and/or vibration
The motor was incorrectly connected.
The condenser is broken (for single-phase motor).
The rotating part is hindered.
The electrical protection devices are triggered
The power supply voltage does not match that shown on the motor plate.
A cable is grounded or has a short-circuit.
The winding is grounded.
Cable terminals loose.
The rotating part is blocked.
Excessive amount of sand in the water.
Density and/or viscosity of liquid too high.
Insufficient or no flow rate
The pump was not correctly filled with liquid.
The intake pipe is narrow or has leaks.
The foot valve is clogged.
Impeller obstructed.
Head less than declared
Incorrect rotation direction.
Leaks in the delivery pipe.
Inside parts worn.
Air or gas in the water.
The pump operates irregularly and/or vibrates.
Pump operating with head too low.
Mechanical parts worn.
System NPSH is insufficient.
In the event of difficulty 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 identification plate).
This product is free from manufacturing defects.
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REMEDIES
Check the device and/or electric line.
Replace the fuses with others of the same value.
Repair or replace the cable.
Replace the motor.
Correct the incorrect connection (see "Electrical connection").
Replace the condenser.
Disassemble and remove the cause.
Change voltage or motor.
Repair or replace the cable.
Disassemble the motor and repeat the winding or replace the motor.
Tighten all the terminal clamps.
Disassemble and remove the cause.
Reduce the flow rate using the delivery shutter.
Contact the manufacturer.
Fill the pump.
Replace the pipe or gasket.
Clean or replace the valve.
Disassemble and overhaul.
Change the rotation direction.
Replace the damaged pipe or gasket.
Disassemble and overhaul.
Contact the manufacturer.
Adjust the shutter on the delivery pipe.
Disassemble and overhaul.
Reduce the flow rate.
Lower the installation level.
Keep the manual for future reference - For more informations visit www.saerelettropompe.com