Speck pumpen BADU Star 69/12, Original Operation Manual

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Safety
12 EN 10|2018
2.9.2 Dry running
If run dry, mechanical seals and synthetic parts can be destroyed
within only a few seconds.

Do not allow the pump to run dry. This also applies to
checking the rotation direction.
 Purge air from pump and suction line prior to start-up.
2.9.3 Cavitation
Pipes which are too long increase resistance. This results in risk
of cavitation.
 Ensure that the suction line does not leak.
 Observe the maximum pipe length.
 Only turn the pump on when the valve in the pressure side is
open.
 Open the valve on the suction side completely.
2.9.4 Overheating
The following factors can result in the pump overheating:
•
Excessive pressure on the delivery side.
• Motor overload switch set incorrectly.
• Ambient temperature which is too high.
 Do not operate the pump with the valves closed, minimum
flow rate 10 % of Q
max
.
 For pumps with a three-phase motor, install a built-in or
external overload switch and set it correctly.

Do not exceed the permitted ambient temperature of 40 °C.
2.9.5 Pressure surges
Valves which close suddenly can cause pressure surges which far
exceed the maximum permissible housing pressure of the pump.
 Install shock absorber or air vessel.
 Avoid valves which close suddenly or, if present, close them
slowly.
2.9.6 Blockages in the pump
Pieces of dirt in the suction line can clog and block the pump.
 Do not operate the pump without a strainer basket or a
strainer basket handle.

Check how easily the pump rotates before starting it up and
after longer idle or storage periods.