Preventing Material Damage; Leakage And Pipe Breakage; Dry Run; Cavitation - Speck pumpen BADU 90 Fiche Technique

2 Safety
2.9

Preventing material damage

2.9.1

Leakage and pipe breakage

Vibrations and thermal expansion can cause pipe breakage.
If the pipe forces are exceeded, leaks can occur at the flange
connection or the pump itself.
2.9.2

Dry run

If run dry, mechanical seals and plastic parts can be destroyed within
only a few seconds.
2.9.3

Cavitation

Pipes which are too long increase resistance. This results in a risk of
cavitation.
2.9.4

Overheating

The following factors can result in the pump overheating:
36 EN VG 766.2000.055
Install the pump in a manner which reduces structure-borne and
airborne noise transmission. When doing so, observe relevant
regulations.
Do not use the pump as a fixed point for the pipe line.
Connect pipes free of load and mount them elastically.
Install compensators if necessary.
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.
Ensure that the suction line does not leak.
Observe the maximize suction pipe diameter.
Only switch on the pump when the valve on the delivery side is
opened halfway.
Open the valve on the intake side completely.
Excessive pressure on the delivery side.
Built-in or external overload switch set incorrectly.
Ambient temperature which is too high.
Do not operate the pump with the valves closed.
For pumps with a three-phase motor, install built-in or external
overload switch and set them correctly.
Do not exceed the allowed ambient temperature.
06/2014