Disassembly And Disposal - Pentair STA-RITE MULTI EVO Instructions De Service

EN
INSTRUCTION MANUAL
7.3 THE PUMP STARTS UP BUT DOES NOT DELIVER LIQUID
• Pump is not primed repeat the "pump
priming" procedure
• The pump takes in air check the liquid
level, operation of the foot valve and
the suction pipeline
7.4 PUMP PERFORMANCE IS REDUCED
• Pipelines obstructed check pipelines
• Incorrect impeller rotation (three
phase motor) check direction of
rotation
7.5 PUMP PERFORMANCE IS UNSTABLE
• Pump suction pressure too low or
cavitation check the pump inlet
conditions
• Suction pipe is partially obstructed
with impurities clean the suction pipe
7.6 THE PUMP ROTATES IN THE OPPOSITE DIRECTION WHEN SHUT DOWN
• Foot valve or check valve defective or
blocked in the open position = remove
and clean or replace the valves
CAPITOLO 8

DISASSEMBLY AND DISPOSAL

DANGER - ELECTRIC SHOCK RISK
Before any intervention on the pump, disconnect the electrical mains. Ensure that the electrical power supply cannot be
restored inadvertently.
• Disconnect the pump electrically
from the system according to safety
standards
DANGER
Note the position of the filler hole, which is also used as a bleed point. Ensure that the liquid on outlet cannot cause damage
or physical injury.
• Loosen the filler cap to reduce the
pressure of the liquid remaining
between the two valves
This product or any part of the latter must be disposed of in accordance with local standards using the public or private waste
collection authorities as required.
20
• The foot valve is blocked in the closed
position replace or clean the valve
• For self­priming pumps only: The liquid
column above the check valve on the
delivery pipeline prevents self­priming
of the pump = drain the delivery
• Pump is not primed correctly repeat
the "pump priming" procedure
• For self­priming pumps only: the
internal valve has not closed gradually
close a valve until there is a visible
• Leak from suction pipe repair or
replace suction pipe
• Air in suction pipe bleed the suction
pipe, repeat the "pump priming"
instructions
• Leak from suction pipe = remove and
repair suction pipe
• Open the tap nearest to the pump to
decrease the system's pressure
• Before disassembly, close the shutoff
• Remove the drain cap from the pump
body to completely empty the pump
pipeline. Check that check valve does
not retain liquid in the delivery pipeline.
Repeat the start­up procedure.
increase in pressure or flow. Then open
the valve gradually until the required
flow rate is reached.
• For self­priming pumps only: The
differential pressure inside the pump
is too low = gradually close a valve until
delivery pressure stabilizes and the
noise level is reduced
valves on the delivery side, and if
present also close the shutoff valve on
the suction side.