6.2.2d
6.2.2c
6.2.2a
6.2.2f
6.2.2b
6.2.2e
of
INDUSTRIAL PUMPS
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rev
PRODUCT CIRCUIT TIGHTNESS CHECK
The seal of the product circuit of the pump must be checked after the rst 2 hours of operation and then
periodically every 500 hours, working as follows:
CAUTION: risk of contact with toxic or corrosive uids and/or ejection of pressurised uid.
Before operating near the pump, it is necessary to wear suitable Personal Protective Equipment (PPE);
(see the Technical and Safety Data Sheets of the treated liquid).
Safety requirements for the tightness check:
• Pump stopped with air supply disconnected and interlocked and residual pressure discharged;
• Pump with the external surfaces clean;
• Open product sectioning valves (suction and delivery);
• Overown pump.
SUCTION SEAL CHECK
The suction seal of the pump must be checked with the pump running, operating as follows:
Visually check for leaks on the suction circuit and on the pump;
If leaks are detected, immediately stop the pump, disconnect the air supply and discharge the residual pressure
from the internal pneumatic circuit.
If leaks are detected, check the tightening of the fastening parts that are part of the suction circuit (hose connec-
tion, clamps, ttings) and/or of the screws of the pump casing and manifold.
CAUTION: risk of product leakage.
The tightness check ensures a correct seal of the product circuit; in the event of leaks or product leaks,
it is always necessary to carefully check that the pump and the internal sealing components are intact
before commissioning.
The check of the hydraulic seal of the product suction circuit is completed.
DELIVERY SEAL CHECK
The pressurised check must be carried out with the pump running, operating as follows:
Visually check for leaks on the delivery circuit and on the pump.
If leaks are detected, immediately stop the pump, disconnect the air supply and discharge the residual pressure
from the internal pneumatic circuit.
Tighten the parts involved on the delivery (hose connection, clamps, ttings) and/or the screws of the pump casing
and manifold as described in Section 6.3 TIGHTNESS CHECK.
CAUTION: risk of product leakage.
The tightness check ensures a correct seal of the product circuit; in the event of leaks or product leaks,
it is always necessary to carefully check that the pump and the internal sealing components are intact
before commissioning.
The check of the hydraulic seal of the product delivery circuit is completed.
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