Speck pumpen SUPI, Translation Of Original Operation Manual

Page: 53 / 84

Safety
09|2017 EN 11
Seized pump
If a pump seizes, and is switched on several times repeatedly, the
motor can be damaged. Observe the following points:

Do not switch the pump/unit on repeatedly.
 Clean pump.
2.9 Preventing material damage
2.9.1 Leakage and pipe breakage
If the pipe forces are exceeded, leaks can occur at the screwed
connection or the pump itself.
 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.
 If the pump leaks, the unit may not be operated and must be
disconnected from the mains power supply.
2.9.2 Dry running
Various components can be damaged within seconds due to dry
running.
 Do not allow the pump to run dry.
 Ventilate the pump/unit.
2.9.3 Cavitation
Pipes which are too long increase resistance. This results in risk
of cavitation.
 Only switch the pump on when the valve on the delivery side
is opened halfway.
2.9.4 Overheating
The following factors can lead to the pump overheating:
• Insufficient
cooling of the pump.
• Closed valve in the pressure line.
 Do not let the pump run dry.
 Do not operate the pump with closed valves.
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.