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Doc. ISM0023 Instruction Manual of series V MODULAR – Rev.02
MALFUNCTIONING, FAILURE, BREAKDOWN, ACCIDENT. MOST FREQUENT
PROBLEMS: CAUSES AND REMEDIES
There aren’t pump details which provide such cases of malfunctioning as to restrict or make its use dangerous.
In paragraph “Most frequent drawbacks: causes and remedy” is discussed with more details in this section.
Malfunctioning and Failure
In case of failure of mechanical parts you must immediately restore the original terms of security by replacing or
repairing the parts that have deficiencies.
In case of failure of the pump, proceed as follows:
-
Turn the motor off;
-
close the inlet and outlet valves;
-
find the cause of the failure by checking the section “ Most frequent drawbacks: problems, causes,
remedies, residual risks".
The failure of a pumping plant can be attributed to:
- a pump failure;
-
a failure or defect in the pipe;
a failure due to an installation or a start not correctly executed;
wrong choice of pump.
Breakdown
In the event of failure of pump alert verbally the staff present in the nearness of the damage that is verifying.
Accident
In case of accident, you must report the emergency to the plant responsible for the installation, in order to
secure the plant to reach with the emergency team the place where the accident happened
.
Most frequent drawbacks: problems, causes, remedies, residual risks
INSUFFICIENT FLOWS
Causes
Remedies / actions to be taken
The head requested exceeds the pump head
expected.
Increase the speed rotation if possible.
Mount an impeller of greater diameter
Reduce the total head of the system if possible.
Increase the diameter of the discharge pipe.
Check that the discharge valve is fully open.
Replace the pump.
Ask your
M PUMPS
distributor.
The pump rotates in the opposite direction.
Check the direction of rotation.
Refer to section 3.5 of this manual
Air or steam trapped in the suction
.
Check the presence of air or steam trapped. Refer to section
3.4 of this manual.
The liquid contains air or steam. The liquid
produces foam.
Check the presence of vortices in the suction line. Enter
some in the fuel tank to prevent the formation of vortices.
Install a tank of sufficient capacity in the suction line to allow
gas to drag
.
Summary of Contents for V MODULAR Series
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