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9. Control functions
9.1 Control panel
9.1.1 Control panel for the jockey pump
The jockey pump is controlled by a dedicated panel that
automatically manages the operation of the pump based on the
state in a low-voltage powered pressure switch, isolated from the
network by a transformer.
The starting method of the electric motor is direct-on-line (DL).
A lockable general door-lock disconnector (pos. A) allows safe
maintenance.
A
ALARM
POWER
B
Control panel for the jockey pump
The panel includes the following components and functions
available in the door:
Pos.
Component
A
Door-lock disconnector (lockable)
B
Control interface
The control interface (pos. B) has the following luminous indications
and actuation keys:
•
LED - power supply present
•
LED - pump running
•
LED - automatic operating mode active
•
LED - intervention of thermal protection
•
LED - Intervention of protection against dry running.
Manual START button (unstable condition)
STOP button
Button to enable automatic operation
By pressing this button, the pump starts and stops
according to the pressure switch setting.
20
9.1.1.1 Operating modes of jockey pump
Manual operating mode
Start the pump manually by pressing and
holding the START button. The pump stops once the START button
is released.
Automatic operating mode
Push the automatic mode button. The pump starts and stops
according to the pressure switch setting.
The automatic mode can be disabled by pressing the STOP button.
Emergency operating mode (control board failure)
Use the emergency operating mode only when you
are replacing the control board. In this operating mode, all
the protections are not active.
If the control board is in failure, you can move a connector inside
the panel to keep the jockey pump operating in emergency mode.
The wiring diagram shows how to enable this operating mode.
Related information
9.2 Operating modes
9.1.1.2 Motor thermal protection setting
You can set the motor protection current by setting the dip switch
(SW1) to select one out of the eight values. The setting procedure
is described in detail in the wiring diagram supplied with the system.
Each one of the above values, if needed, can be increased up to
130% by setting on the trimmer AMP%.
If the motor current is above the set value, the pump stops and a
dedicated LED is lit.
If the current value returns below the set threshold, the alarm
resets automatically after one minute. After three unsuccessful
attempts within five minutes, a manual reset is required.
9.1.1.3 Clicson motor protection
If the motor of the jockey pump is equipped with a Clicson, this can
be used to identify the condition of overtemperature and to stop the
pump.
The alarm condition must be reset manually.
This function is disabled at the factory and if necessary, can be
activated by the user during commissioning by removing the
bridge between the relevant terminals and connecting the Clicson.
Refer to the wiring diagram for the Clicson connection.
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