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display (or use the selection menu pressing + or -). The menu allows you
to view and modify various configuration parameters: the MODE key al-
lows you to scroll through the menu pages, the + and – keys allow you re-
spectively to increase and decrease the value of the parameter concerned.
Press SET to leave this menu and return to the main menu..
5.5.1 - RP: Setting the pressure fall to restart
Expresses the fall in pressure with respect to the SP value which causes.
restarting of the pump.
For example if the setpoint pressure is 3.0 [bar] and RP è 0.5 [bar] the
pump will restart at 2.5 [bar]. RP can be set from a minimum of 0.1 to a
maximum of 1 [bar]. In particular conditions (for example in the case of a
setpoint lower than the RP) it may be limited automatically. To assist the
user, on the RP setting page the actual restarting pressure also appears
highlighted under the RP symbol, see Figure 17.
Figure 17: Setting the restart pressure
5.5.2 - OD: Type of plant
VPossible values 1 and 2 referring to a rigid system and an elastic system.
The device leaves the factory with mode 1 suitable for the majority of sys-
tems. In the presence of swings in pressure that cannot be stabilised by
adjusting the parameters GI and GP, change to mode 2.
IMPORTANT: The regulating parameters GP and GI also change in the
two configurations. In addition the GP and GI values set in mode 1 are
stored in a different memory from the GP and GI values set in mode
2. So, for example, when passing to mode 2, the GB value of mode 1
is replaced by the GB value of mode 2 but it is kept and will reappear
again when returning to mode 1. The same value shown on the display
has a different weight in one mode or in the other because the control
algorithm is different
..
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5.5.3 - MS: Measuring system
Set the measuring system, choosing between metric and imperial units.
The quantities displayed are shown in Table 6.
NOTE: The flow in English-speaking units (gal/min) is indicated adopt-
ing a conversion factor of 1 gal = 4.0 litres, corresponding to the metric
gallon.
Units of measurement displayed
Quantity
Metric units
Pressure
bar
Temperature
°C
Flow rate
l / min
Table 6: Measuring system
5.5.4 - EK: Setting the low pressure function on suction
Sets the low pressure function on suction.
Value
0
1
2
5.5.5 - PK: Low pressure threshold on suction
Sets the pressure threshold below which the block is tripped for low pres-
sure on suction.
Imperial units
psi
°F
gal / min
Function
disabled
enabled with automatic reset
enabled with manual reset
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