Pentax HP Serie Instructions D'utilisation page 68

7. PROBLEMS, CAUSES AND SOLUTIONS
PROBLEMS
5 - The seal is leaking.
6 - Pump bearing overheating.
7 - Bearing wear.
8 - Motor is overloaded.
PROBABLE CAUSES
A) - Desaligned coupling. .....................
B) - Damaged seals. ............................
C) - Unsuitable seal materials. ...............
D) - Wrong sleeve. ...............................
E) - Wrong reassembly. ........................
A) - Fluid viscosity higher than
that provided.
B) - Misaligned coupling. .....................
C) - Overload on the pump piping. ......
D) - Worn pump bearings. ....................
E) - Wrong reassembly. ........................
F) - Too low capacity. ...........................
G) - Lack of lubricant or unsuitable type.
H) - Too much grease. ..........................
A) - Misaligned coupling. .....................
B) - Overload on the pump piping. .......
C) - Wrong reassembly. ........................
D) - Too low capacity. ...........................
E) - Lack of lubricant or unsuitable type.
A) - Required head of installation higher
than the project head.
B) - Fluid viscosity higher than ..............
that provided.
C) - Specific weight higher than
the project weight.
D) - Low voltage. ..................................
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POSSIBLE SOLUTIONS
A) - Check and align.
B) - Check and replace.
C) - Check and replace.
D) - Check and replace.
E) - Check and correct.
A) - Check viscosity with pump in standard
conditions.
B) - Check and align.
C) - Check flanges alignment, pipes fixing
and base fastening.
D) - Check and replace.
E) - Check and correct.
F) - Increase.
G) - Check and add.
H) - Check and remove.
A) - Check and align.
B) - Check flange alignment, pipe fixing
and base fastening.
C) - Check and correct.
D) - Increase
E) - Check and add
.
A) - Overhaul the installation. Decrease
the speed (combustion engines).
Reduce impeller diameter
B) - Check viscosity with pump
in standard conditions.
C) - Choke the check valve.
D) - Adjust.