30
Faults
CL-CBH/EN (1901) 7.6
6.2
Causes and possible solutions
A Electrical connection is faulty:
• Consult your electrician
B Wrong sense of rotation:
• Consult your electrician
C Pump not filled with liquid:
• Open valves
• Fill pump with fluid
• De-aerate the system
D NPSH available too low:
• Increase the pre-pressure
• Mount the pump as low as possible in the piping
E Pump does not run at the required speed:
• Consult your electrician
F Foreign particles inside the pump:
• Dismantle and clean the pump
• If necessary mount a filter
G Air in the pipes:
• De-aerate the system
• Increase the immersion depth of the suction pipe
• Increase the liquid level at the suction side
H Required head higher than calculated:
• Change the speed
• Select another pump
I Suction pipe or possibly mounted filter blocked:
• Clean filter and suction pipe
J Damaged bearings:
• Replace bearings
• Inspect the shaft
• Check whether the impeller is not damaged
K Impeller stuck:
• Try to rotate the shaft at the rear by means of a screw driver through the hole in the fan
protecting cover
• Dismantle and clear the pump, check the shaft on straightness
Summary of Contents for SPX Flow CombiBlocHorti Series
Page 2: ......
Page 6: ...4 INT Horti EN 1512 1 2 ...
Page 10: ...8 CL CBH EN 1901 7 6 ...
Page 14: ...12 Introduction CL CBH EN 1901 7 6 ...
Page 28: ...26 Commissioning CL CBH EN 1901 7 6 ...
Page 34: ...32 Faults CL CBH EN 1901 7 6 ...
Page 44: ...42 Disassembly and assembly CL CBH EN 1901 7 6 ...
Page 54: ...52 Dimensions and weights CL CBH EN 1901 7 6 ...