DAB PUMPS MCE-22/P, Instruction For Installation And Maintenance

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6.3.2.3 P3: Auxiliary pressure 3 setting
Pressure to apply to the system if the auxiliary pressure function is activated on input 3.
6.3.2.4 P4: Auxiliary pressure 4 setting
Pressure to apply to the system if the auxiliary pressure function is activated on input 4.
The pump restart pressure depends both on the set pressure (SP, P1, P2, P3, P4) and RP.
RP expresses the reduction in pressure, with respect to "SP" (or an auxiliary pressure if activated), which generates
pump start-up
.
Example: SP = 3,0 [bar]; RP = 0,5 [bar]; no auxiliary pressure function active:
During normal operation, the system pressure is set at 3.0 [bar].
The electric pump is restarted when the pressure falls below 2.5 [bar].
Entry of an excessively high pressure setting (SP, P1, P2, P3, P4) with respect to the pump output specifications, may
cause false errors of water failure (BL); in this case lower the pressure setting or use a pump suited to system
requirements.
6.4 Manual menu
From the main menu, press and hold “SET" & “+” & “-“ simultaneously until “FP” appears on display (or use the b or – in the
selection menu).
This menu enables the display and modification of various configuration parameters. The MODE button enables the user to scroll
through the menu pages, while b and – enable respectively to increase and decrease the value of the parameter concerned.
To exit the current menu and return to the main menu, press SET.
In manual mode, regardless of the parameter on display, the following commands are enabled
:
Temporary start-up of electric pump
When the buttons MODE and - are pressed simultaneously, the pump is started up at the frequency FP and this operating status
remains while the buttons are pressed.
When the pump ON or pump OFF command is activated, the relative notification is shown on display.
Pump start-up
When the buttons MODE and + are pressed simultaneously for 2 seconds, the pump is started up at the frequency FP. This operating
status remains until SET is pressed. When SET is pressed again, the user exits the manual mode menu.
When the pump ON or pump OFF command is activated, the relative notification is shown on display.
Inversion of direction of rotation
When the buttons SET and - are pressed simultaneously for 2 seconds, the pump changes direction of rotation. The function is also
enabled when the motor is running.
6.4.1 FP: Test frequency setting
This displays the test frequency in [Hz] and enables modification by means of the buttons “+” and “-“.
The default value is FN – 20% and can be set between 0 and FN.
6.4.2 VP: Display of pressure
System pressure measured in [bar] or [psi] depending on measurement system selected.
6.4.3 C1: Display of phase current
Phase current of electric pump in [A]
A round flashing symbol may appear under the phase current C1 symbol. This signals that the pre-alarm threshold of maximum current
allowed has been exceeded. If the symbol flashes at regular intervals it means that the motor overcurrent protection is being activated
and that it will probably be triggered. In this case it is necessary to check the correct setting of the maximum current of the RC pump,
see paragraph 6.5.1 and the electric pump connections.