Maintenance; General Maintenance; Preparation For Maintenance; Water Heater Or Tank Maintenance - AOSmith MVI 103 Notice D'installation Et D'utilisation

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7
7.1 General

maintenance

7.2 Preparation for
maintenance
7.3 Water heater or
tank maintenance
7.4 Solar collector
maintenance
7.5 Maintenance
items
7.5.1
7.5.2
MVI pompstation / MVI pump station / station de pompage MVI
Maintenance
A solar installation has to be maintained every year. During this annual maintenance all
components have to be checked and tested.
Caution:
Maintenance may only be carried out by an approved service and
maintenance engineer.
Note:
Before ordering spare parts, it is important to write down the installation
type, solar pump model, and the full serial number of the solar pump station.
These details can be found on the rating plate. Only by ordering with this
information can you be sure to receive the correct spare parts.
Because glycol is used in the system, special seals are required.
Before carrying out any maintenance work, switch off the unit (control and pump) and
ensure that it cannot be switched on again by unauthorized people. Never carry out work on
a running pump.
For maintenance, please see the manual included with the water heater or tank. If this topic
is not covered in the manual, then contact the supplier of the water heater or tank.
For maintenance, please see the manual included with the solar collectors. If this topic is not
covered in the manual, then contact the supplier of the solar collectors.
The following items need to be maintained during annual check up:
Visual check system
Check the pump and solar pump station piping for leaks, also check the ground beneath the
pump and piping (if possible) for any residue or wet spots.
Check pump
Check the functionality of the pump. When the pump is running, the meter from the pressure
gauge should change and the shaft should be rotating. It might be necessary to remove the
cover in the middle of the pump to see the shaft rotate.
During the running-in period (after replacing the seal), there may be some dripping from the
axial face seal. Should a more significant leak occur as a result of substantial wear, have the
axial face seal replaced by a (Wilo) specialist.
Increased bearing noise and unusual vibrations indicate a worn bearing. In this case, have
the bearing replaced by a (Wilo) specialist.
If placed in a frost-free location (as required with this pump station), the pump does not have
to be emptied, even if it is out of service for a long period.
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