EBARA Ego Serie Manual De Instrucciones página 15

casing of the device, due to the high temperatures of the casing.
Electrical connection of ER module (for Ego ER versions with control
signal 0-10V)
• The signal conductor for control signal 0-10 V should be led through a small
gland along the hydraulic housing on the electric fuse box. The conductor
should be temperature resistant at a temperature of >85°C. The polarity of
the signal conductor is not relevant. See fig. 4.1
9. USE AND RUNNING
• Before the startup, the pump must be filled with fluid and vented
• Pumps Ego (B) -/40, -/60 and -/80 do not need to be manually vented, as this
occurs automatically when the hydraulic system is being ventilated during the
start-up. The air in the pump generates noise. After a short working period
noise should disappear.
• For a proper functioning, a minimum pressure at suction must be guaranteed
(see LIMIT OF USE)
During its running, it is normal for the pump to heat up, or to be heated
by the pumped fluid - to prevent from risk of burns, it should therefore
not be touched!
• The permitted operating area around the pump is determined by the diagram
in these instructions.
10. SETTING AND OPERATION
10.1 OPERATION MODES
• Pump settings can be changed with the button on electric box top. It is
possible to choose between the following operating modes:
a) "Proportional differential pressure" (∆pv – regulated mode): in this
mode the button pulsates and the duration of the pulse interval shortens
along with the flow decreasing.
b) "Fixed speed" (unregulated mode): in this mode the setting button does
not pulse, but remains constantly illuminated.
• Each mode enables a choice between three different preset curves at
"proportional differential pressure" and three curves at "fixed speed". The
button lights up with the colour that indicates the selected level. The sequence
is "blue-green-yellow": the blue indicates the lowest speed/differential pressure
curve, the yellow the maximum speed/differential pressure curve
How to set different operating curves and how to switch between the 2 modes
• If the pump is operating at proportional differential pressure (regulated mode
– recognizable by the pulsating button), a short pressing of the button will
change the operating curve according to a.m. sequence (blue-green-yellow).
• In order to switch from the "regulated mode" to the "fixed speed" (unregulated
mode) it is necessary to press the setting button for at least 5 seconds: in
this way the button will remain constantly lit (thus indicating the fixed speed
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