2
Safety
44
EN VG
766.2330.061
05/2013
2.9
Prevention of Material Damage
2.9.1
Leakage and Burst Pipes
Vibrations and thermal expansion can result in breakage in the piping.
Install the unit so that it is running smoothly and ensure physical and
airborne noise transmissions are reduced. Use the anti-vibration buffers
included. Follow the relevant regulations.
Housing
Avoid excessive strain on the housing parts as this can cause damage.
The cover is not designed to withstand excessive weight and should
not be stood on or used as a diving board.
2.9.2
Protection against Running Dry
Check the pump is properly filled with water. Running the unit dry can
destroy the mechanical seals and plastic parts within seconds.
Never let the pump run dry not even when checking for the direction
of rotation.
Ventilate the pump and the suction line before starting up.
2.9.3 Overheating
The following factors may lead to the pump overheating:
Improperly set motor protection switch.
Air vents are blocked by leaves, branches, etc.
Lack of separation wall.
Ensure the external or built-in overload switch is correctly set.
Only operate the unit with the attached insulation wall. See page 66,
figure 12.
2.9.4 Seized
Pump
Dirt particles in the suction line can clog and block the pump.
When necessary, suction openings should be freed from foreign
bodies (branches, leaves, clothing, etc.)
Check the pump for smooth operation before start-up and after
extended storage or down- time.
2.9.5 Drainage
Insufficient leak drainage can damage the motor.
Do not obstruct or seal off the leak drain between the pump housing
and motor.
