KRAL KV - 11 Maintenance; 11.1 Dangers during maintenance; 11.2 Required maintenance; 11.4 Maintaining the pump

11 Maintenance
11.1 Dangers during maintenance
11 Maintenance
11.1 Dangers during maintenance
The following safety instructions must be observed strictly:
o Have all work carried out only by authorized qualified personnel.
o Before beginning work, let the pump unit cool down slowly to the ambient temperature. Avoid
rapid temperature changes.
o Pumped liquids can be hot, poisonous, combustible and caustic. Use corresponding protective
equipment.
o Collect any discharging pumped liquid safely and dispose of it in an environmentally compatible
manner in accordance with the applicable local regulations.
o Ensure that the collection tank for discharging pumped liquids is sufficiently large.
o Observe the operating instructions and data sheets of the components.
11.2 Required maintenance
The service life depends on the observance of the operating conditions of the pump and the require-
ments from the operating instructions of the components.
Component Required maintenance Cycle
Pump
o Visual inspection
o Acoustic inspection
4weeks
Filter/strainer (system side)
o Check of the suction-side
pressure
2weeks
Magnetic coupling
o Check of the tightening
torques
1year
Overflow valve
o Function test
≤5years
Tab.9: Required maintenance
11.3 Ball bearing
When using the pump in lubrication oil applications with a minimum purity class of 21/18/13 according
to ISO4406, a bearings replacement at the latest after 5 years (400000h) is sufficient.
11.4 Maintaining the pump
Personnel qualification: o Fitter
Personal protective equipment: o Work clothing
o Protective gloves
o Safety boots
o Face protection
DANGER
Magnetic field.
Risk of death for persons with cardiac pacemaker, metallic implant or neurostimulator.
► Under no circumstances may persons with cardiac pacemakers, metallic implant or
neurostimulator perform work on the pump/pump unit.
WARNING
Risk of injury through emitted pumped liquid.
Pumped liquids can be hot, poisonous, combustible and caustic.
► Wear personal protective clothing during all the work. Ensure face protection.
► Collect any discharging pumped liquid safely and dispose of it in an environmentally compatible
manner in accordance with the applicable local regulations.
28
OIK 09en-GB Edition 2019-11
Operating instructions