Speck pumpen BADU JET Smart Traduction Du Instruction D'utilisation Originale page 67

2.9.3 Cavitation
Incorrect configuration of the pipe dimensions and non-
observance of the prescribed mounting depth can cause
cavitation.
 If the distance between the pump and the main housing is
great, ensure an almost loss-free flow when configuring the
pipes.
Observe the prescribed mounting depth of 25 cm.

 Ensure that the suction line does not leak.
 Open the valves 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
 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.
 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.
 Remove foreign matter (branches, leaves, clothes, ...) from
the suction opening.
 Check how easily the pump rotates before starting it up and
after longer idle or storage periods.
2.9.7 Drainage
An insufficient drain gap can damage the motor.
Do not block or seal the drain gap between the pump

housing and the motor.
2.9.8 Risk of frost
 Drain the pump/unit and pipes at risk of freezing in plenty of
time.
 Remove the pump/unit during periods of frost and store it in a
dry room.
06|2020
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max
Safety
EN 13