ENGLISH
33
Fig. 10
Jerk direction
8. MAINTENANCE AND SERVICE
Routine maintenance work, limited to checking, cleaning or replacing limited parts, may be carried out
only by expert and qualified personnel, provided with suitable equipment, who know the safety
regulations for the working environment and have read and carefully checked the content of this
manual and of any other documentation attached to the product.
Special maintenance or repairs must be entrusted to authorised Dab Pumps service centres.
Before starting any work on the system or troubleshooting, ensure that the main switch is off
and that the power supply cannot be switched on again accidentally. Check that all the
protection systems are correctly connected and that all the rotating parts are stopped.
Maintenance work on explosion-proof pumps must be carried out by DAB Pumps or a service
workshop authorized by DAB Pumps.
However, this does not refer to hydraulic components such as the pump body, the impeller and
the mechanical seal.
The replacement of the cable must be carried out exclusively by the manufacturer’s service
centre or by another qualified person.
The pump may have been used for pumping liquid that is harmful to health, contaminated or
toxic. Take all the precautions concerning health and safety before carrying out maintenance
or repairs.
Use genuine spare parts only for repairs.
Select the spare parts to be ordered, consulting the exploded drawings available on the DAB Pumps site or the
DNA selection software.
The manufacturer declines any responsibility for eventual damages to persons, animals or things for
maintenance and repair interventions carried out by non authorized personnel or with no genuine spare parts.
Specify the following information when ordering spare parts:
1. The type of electric pump.
2. Serial number and manufacturing year.
3. Denomination and reference number of the spare parts.
4. Required number of parts.
8.1 Routine Maintenance
Pumps running normal operation should be inspected every 3000 operating hours or at least once a year. If the
pumped liquid is very muddy or sandy, inspect the pump at shorter intervals.
Check the following points:
Power consumption
See pump nameplate.
Oil level and oil condition
When the pump is new or after replacement of the shaft seal, check the oil level and water content after one
week of operation. If there is more than 20 % extra liquid (water) in the oil chamber, the shaft seal is defective.
The oil should be changed after 3000 operating hours or once a year.
