Wilo CONTROL BOX CE+ WeH Installation And Operating Instructions Manual page 15

Position HAND:
- The pump is operating in continuous mode for a
limited time-period of 15 seconds. After this
period the pump stops. It is then required to
switch back to the position OFF and again to
HAND to start the pump again in continuous
operating mode. the magnetic, thermal and lack
of water protections remain operative in this
mode, other protections are deactivated.
Position AUTO:
- All control functions of the system are operative.
Filling
To allow the filling with water of the tank an elec-
trovalve and a float switch can be connect to the
control box. When the float is off the electrovalve
open till 10 seconds after the recovery of the float
switch.
Operating mode of filling
A 2-position rotary switch on the front part (Fig. 2
pos. 8) allows to select 2 operating modes for fill-
ing:
Position HAND:
- The electrovalve is forced to operate.
Position AUTO:
- All control functions of the filling are operative.
Too high pressure
The system is protected in case of too high pres-
sure. If the output pressure of the system is higher
than the setting pressure defined by the poten-
tiometer "too high pressure setting ", (Fig. 1, pos.
7) the system stop.
- activation of the fault signal, fault signal for
burner and the leds too high pressure is ON (Fig.
2, pos. 9).
- automatic reset of the fault.
Too low pressure
The system is protected in case of too low pres-
sure. If the output pressure of the system is lower
than the setting pressure defined by the poten-
tiometer "too low pressure setting ", (Fig. 1, pos.
8) the system can react in 2 way thanks to the
dipswitch "selection too low pressure" (Fig. 3, pos.
3).
The system can stop or continue to pumping, in 2
case:
- activation of the fault signal, fault signal for
burner and the leds too low pressure is ON (Fig.
2, pos. 10.
- automatic reset of the fault.
Missing phase
The system is protected if one or more network
phases are missing:
- activation of the fault signal and all the leds
pump fault.
- hand reset of the fault by positioning all switch-
es on 0 – reset.
Magnetic fault
A magnetic circuit breaker protects motor and
power cables against short-circuit. On this fault
type, the electronic switches directly on another
WILO SE 09/2011
available pump:
- activation of the fault signal and led pump fault.
- Hand reset of the fault (rotary switch on position
0 - reset).
Over current fault
The protection against motor overload is operat-
ing by the current measurement in one phase.
When this current is higher than current protec-
tion setting, the electronic stop the pump in fault
and switches directly on another available pump:
- activation of the fault signal and led pump fault.
- Hand reset of the fault (rotary switch on position
0 - reset).
A 0.5A level is fixed for detect no load on the
phase supervised. This function allows to protect
against overload on 2 other phases when the
phase supervised is cut:
- activation of the fault signal and led pump fault.
- hand reset of the fault (rotary switch on position
0 - reset).
Installation leakage detection
(By over consumption of water)
When the frequency of opening ov electrovalve is
too important, the system consider a potential
"leakage", all pumps are stopped.
- activation of the fault signal
- Err-LEA mentioned on the display
- Hand reset of the fault by positioning all the
switches on 0 – reset.
Lack of water protection
The detection of lack of water will be temporised
(10s). This function is operative whatever the
operating mode of the control box is.
- activation of the fault signal, the fault for burner
and LED lack of water".
- Automatic reset of the fault.
Fault signal
The fault transfer is activated when one of the
following fault appears:
- missing phase motor.
- magnetic circuit breaking (except control box
with thermal relay).
- motor overload.
- motor current lower than 0.5A (except control
box with thermal relay).
- lack of water.
- Too high pressure
- Too low pressure
- leakage in the installation.
- pressure transmitter cable cut.
Fault signal for burner
The fault transfer for burner is activated when one
of the following faults appears:
- lack of water.
- Too high pressure
- Too low pressure
- pressure transmitter cable cut.
6.2.2 Inputs/Outputs FIG. 4
1 Pressure input (4 – 20mA) : an analog input on
the electronic part allows the connection of a
English
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