Italtecnica Sirio SR23251 Serie Instrucciones Para El Uso página 31

between Pmax and Pmin is 0.3 bar, although it is advisable to keep it at least 0.5 bar. Use the + and –
buttons to alter the parameter setting.
protection device especially in submersed pumps or pumps that have self-priming problems. The default
v a l u e s e t b y t h e m a n u f a c t u r e r i s 1 0 s e c o n d s . U s e t h e " + " a n d " -" t o c h a n g e t h e s t o p d e l a y v a l u e .
once again; if it fails, another attempt will be made after the same amount of time has lapsed. The
maximum interval allowed is 300 minutes (recommended value: 60 min). Use the + and – buttons to alter
the parameter setting.
u s i n g t h e " + " b u t t o n . I f o n t h e o t h e r h a n d y o u wish to completely deactivate the leakage control, then
p r e s s t h e " -" b u t t o n u n t i l t h e w o r d " O F F " a p p e a r s o n t h e b o t t o m l i n e o f t h i s p a g e .
Pmax2: t h i s p a g e i s o n l y d i s p l a y e d i f t h e " A U X I L I A R Y C O N T A C T "
p a r a m e t e r i s s e t o n " 3 " ( s e c o n d s e t -point function); this parameter is used to
set the secondary set-point of the device.
externally closed the Pmax2 pressure value becomes the new set-point
according to which the Sirio adjusts the speed of the motor pump.
Pmin: this value represents the pump restart pressure. When any user
appliance is switched on, the pump does not start up until the system
pressure has dropped below the Pmin value. Once the motor has started
running, its rotation speed is regulated to keep the pressure as near as
possible to the value set for the Pmax. The minimum differential settable
Stop delay: Use this parameter to define after how many seconds the motor
pump should stop once all the functions have been closed. If when the
flows are low the pump continuously switches on and off, increase the
switching off delay so that the operation is smoother. Increasing the
parameter can also be useful to stop the frequent triggering of the dry run
Auto-reset interval: if the pump experiences a temporary shortage of
intake water while it is operating, the Sirio cuts off the power to the motor
to prevent it being damaged. From this screen page, a device automatic
restart time can be set (in minutes) at the end of which a test will be run to
see if the intake water supply has returned. If the test is successful, the
Sirio automatically quits the error status and the system becomes operative
Auto-reset test n.: this parameter sets the number of attempts that the
Sirio will make to resolve a stop condition due to dry running. Once this
l i m i t h a s b e e n e x c e e d e d , t h e s y s t e m s h u t s d o w n a n d t h e u s e r ' s i n t e r v e n t i o n
is required. If this value is set to zero, the auto-reset function is switched
off. The maximum number of attempts allowed is 10. Use the + and –
buttons to alter the parameter setting..
Maximum number of starts in an hour: From this page you can set the
maximum number of starts of the motor pump in one hour before the
intervention of the Serious Leakage alarm. Only short starts are counted, in
other words those which are not followed by the suction of minimum 2.5
litres/min of water. If the Serious Leakage alarm is activated too often or
without reason, then it is advisable to increase the parameter on this page
31
When the auxiliary contact is