Dual Pumps BP 125, Operating Instructions Manual, Page: 15 / 20

7. CLEANING AND MAINTENANCE
CAUTION
• Only start cleaning and maintenance once the instructions in the ‘Switching off’ section
have been completed, i.e.
no part of the pump must be in motion and no pipe must con-
tain liquid under pressure..
It is particularly important to always disconnect the electricity supply, if present.
7.1 ROUTINE MAINTENANCE
Follow the instructions in the ‘SWITCHING OFF’ section and abide by the recommendations
in the table below.
(1) This must be controlled more frequently if the pump operates in circumstances with
heavy vibrations (crawler tractors, combustion engines, etc.).
WARNING
• During use, the pump should not be too noisy and large amounts of water or oil should not
drip from underneath it.
In this event, a Skilled Technician should test the appliance.
7.1i DIAPHRAGM RUPTURE
The rupture of one or more diaphragms can result in the mechanical parts of the pump
being damaged by the liquids being pumped.
The following are symptoms of possible diaphragm rupture:
• oil takes on a whitish appearance (symptom of water in the oil)
• excessive consumption of oil
• sudden lack of oil in the volumetric compensator
WARNING
• To avoid the negative consequences of this malfunction, stop operation of the pump
immediately and contact a Skilled Technician without delay (within 24 hours) who will
take the necessary action.
If it is not possible to contact a
Skilled Technician within the above time in case of
diaphragm rupture, we recommend you drain the pump crankcase of the mixed oil and
pumped liquid and then fill it with oil or diesel to prevent the formation of rust.
• The following are frequently the causes of diaphragm rupture:
- bottlenecks in the intake circuit (inadequate pipe section, dirty filter, very dense liquid being
pumped, etc)
- the use of very aggressive chemicals
INTERVAL FOR MAINTENANCE ACTION
Each time used Check the level and the status of the oil.
Check the water intake filter and clean if
necessary
Every 50 hours Check the accumulator inflation pressure
(when present).
Check the water intake circuit is intact.
Check the pump is securely fastened
to the structure of the machine that
incorporates the pump.
Should the pump not be fastened
securely, do not use the machine under
any circumstance and contact a Skilled
Technician (1)
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