Wilo Wilo-SiFire FIRST, Инструкция по установке и эксплуатации

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en Faults, causes and remedies
78 WILO SE 2020-12
FAULT CAUSE REMEDIES
Foreign object in the pump Dismantle and remove
Non-aligned joint Realign
Bearings poorly lubricated or worn/
broken Lubricate with grease or replace
Damaged bearings Replace
Overheating of pump bearings Insufficient lubrication Re-grease
Misalignment between pump and mo-
tor Realign
Absence of vibration dampers on the
system Repair
Pump cavitation Review the sizing of the system
Abnormal vibrations
Water with high air content Check that there are no leakages in the suction line.
Check the distance between the suction units. If more
than one pump is installed, install anti-vortex plates
Wear on bearings, pump shaft Replace
Wear on pump/motor coupling rubber
plugs Replace
Misalignment between pump and mo-
tor Realign
The motor does not stop after
pressing the STOP button It's normal if the pressure in the sys-
tem is not restored Deactivate automatic mode with the "AUTOMATIC OFF"
switch and then press the STOP button
Stop electromagnet/switchgear failure Manually close the fuel inlet
ELECTRIC JOCKEY PUMP
FAULT CAUSE REMEDIES
When one of the system taps is
opened, the pump does not start, or
starts after a few seconds
The adjusted P
min
value is too low or a
check valve has been installed down-
stream of the system. Check the set-
ting of the P
min
parameter
Check the correct connection between switchgear and
electric pump
The pump switches on and off con-
tinuously
The system is leaking Check the various hydraulic connections. On the display,
check for the presence of any pressure drops when the
taps are closed. Check the switchgear. Check for possible
presence of dirt in the check valve that prevents it from
closing perfectly. If necessary, clean with compressed air.
Install a small expansion vessel at the switchgear outlet.
The device frequently signals a dry-
running condition
During periods of system inactivity,
the pump suction pipe empties, pre-
venting the pump from being loaded
at the next start Check the tightness of any foot valve
With very low water flows, the
pump runs unevenly
The flow values are too low. As this
cannot be detected by the device, it
will cause the electric pump to stop. Install a small expansion vessel (1-2 litres) to make the
system elastic and reduce the number of restarts
The system pressure has risen above
the set value of P
max
If the protective devices against ice or
against the blocking of mechanical
components have been activated, it is
normal that an increase in pressure
beyond the set values may occur be-
cause the pump is forced to start for
15 seconds regardless of the pro-
grammed values of P
max
and P
min
Reduce system pressure
Switchgear does not turn on
The electronic card may have been
damaged Check and replace
The motor does not start
Missing power supply Check connections and switchgear
Calibration of the pressure switch at a
lower pressure than the main pump Check and recalibrate
Short-circuit in the windings Check the windings in the workshop