Dutypoint VT Booster Set, Руководство по эксплуатации и обслуживанию, Страница: 26 / 123

3.2 Troubleshooting
The information in this section is common to all Dutypoint centrifugal pumps. For more detailed
troubleshooting information that is specific to the type and model of pump and controller used in
this product, please refer to the manufacturer's literature.
First step when a fault occurs:
When a fault first occurs, turn off the main power to the pumpset and leave off for around 1
minute. Switching power back on and re-energising the system may be sufficient to clear
the fault.
Pump will not start
Possible cause(s) Recommended action
No electrical power Check and rectify
Blown fuse Check and rectify
Overload trip Check and (if necessary) reset the overload trip value.
For control panel information refer to Section 2.
For pump and controller manufacturer's information refer to the appendices to this manual.
Low (or zero) output discharge rate
Possible cause(s) Recommended action
The rotating part(s) of the pump is/are partially
or completely obstructed
e.g: impeller obstructed by foreign matter
Strip the pump to inspect and rectify
Pump not primed - WARNING: running the
pump ‘dry’ can cause serious damage to the
mechanical seal. Having first checked the mechanical seal for
damage, prime and air-bleed the pump and
try again
Valve in suction pipework closed or partially
closed. Check all appropriate valves are fully open.
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VT Booster Set