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ENGLISH
Refer to the “safety instructions”.
• In normal conditions, the electric
pumps do not require any scheduled
maintenance.
• With a view to prevention of possible
faults, it is recommended to period-
ically check the pressure delivered
and current absorption. A reduction
in pressure is symptomatic of pump
wear. An increase in current absorp-
tion is symptomatic of abnormal
mechanical friction in the pump.
• Special maintenance may be required
to clean the pump and replace any
worn parts.
• If the pump is not used for prolonged
periods (e.g. for an entire season) it
should be drained completely rinsed
with clean water and stored in a dry
location.
At least twice a year, inspect the expansi-
on tank and check the pre-charge pres-
sure, sealing efficiency of the joints and
all areas for visible signs of damage and/
or corrosion. To check the pre-charge
pressure, turn off the pump and drain all
water from the system until the system
water pressure has returned to zero. On
completion of the check, restore the sys-
tem to normal conditions.
QUICK TROUBLE
SHOOTING GUIDE
Refer to the “safety instructions”.
Water leaks from the air valve of the
expansion tank when checking the gas
pressure
• The membrane inside the tank is
damaged = replace the internal mem-
brane of the tank or replace the tank
itself
The pump does not work
• No power supply = turn on the switch
and check that no electrical connec-
tions are loose or defective.
• Check the mains voltage
• Fuse blown = check that the cables
and relative connections are not de-
fective and replace the fuse if neces-
sary
• The single phase motor thermal cut-
out has tripped = this is reset auto-
matically once the motor has cooled
• Motor overload cutout has tripped
= check that the cables and relative
connections are not defective, check
that the pump is not blocked mechan-
ically, or whether the pump winding is
damaged (replace if necessary)
• Electrical power line damaged =
replace
• Pump blocked mechanically = clean
• Control device faulty = replace pres-
sure switch
The pump stops after a short interval of
operation due to a tripped motor pro-
tection device
• Excessive current absorption = check
the operating condition of the pump
• If foreign bodies are present, block-
ing hydraulics = clean the hydraulic
components
• The single phase motor thermal cut-
out has tripped = this is reset auto-
matically once the motor has cooled;
check installation conditions
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