Pentair STA-RITE WP/MULTI EVO-A Handleiding pagina 23
Beschikbare talen
Beschikbare talen
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
Pump performance is reduced
• Pipelines obstructed = check pipelines
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
The pump starts and stops frequently
• The membrane inside the tank is
damaged = replace the internal
membrane of the tank
The pump does not stop
• The pressure switch setting is
incorrect (too high) = adjust the
pressure switch to within the pump
pressure limits
• 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
• Pump is not primed correctly = repeat
the "pump priming" procedure
• The pressure switch setting is low =
adjust the pressure switch
• Leak from suction pipe = remove and
repair suction pipe
• The gas pressure in the expansion
tank is incorrect with respect to the
pressure switch setting = adjust the
gas pressure to approximately the
pump intervention pressure minus
10%.
• air in suction pipe = bleed the suction
pipe, repeat the "pump priming"
instructions
of the pump = drain the delivery
pipeline Check that check valve does
not retain liquid in the delivery pipeline
Repeat the startup procedure.
• For selfpriming pumps only: the
internal valve has not closed =
gradually close a valve until there is
a visible increase in pressure or flow.
Then open the valve gradually until the
required flow rate is reached
• Leak from foot valve = clean or replace
the foot valve
EN
21
