Control Panel Of The Jockey Pump; Control Panel Of The Duty Electrical Pump - Grundfos Hydro EN Installation And Operating Instructions Manual

Make all connections and electrical connec-

tions by applying all the rules and provisions
in force in the terms of security and within the
respect of the fire norm.
Make sure that the control panel and the main and jockey
pumps are suitable for the mains voltage with which they will be
used.
Be sure that the control panel is mechanically disconnected
from the frame of the diesel engine and fixed to the ground.
A robust earth connection between the engine frame and the
control panel stand must be carried out with a cable of gener-
ous section or metal braid.
Use connection cables of adequate section for the required cur-
rent of the pump and in compliance with the EN 12845 require-
ments.
Refer to the wiring diagrams supplied in the scope of supply for
the electrical connections of the panel.
10.

Control panel of the jockey pump

The jockey pump is controlled by a specific panel that automati-
cally manages its operation.
The panel is equipped with a general door lock disconnecting
switch (Pos.A), padlockable for easy and safe maintenance.
Start and stop of the jockey pump is controlled by a low voltage
pressure switch, isolated from the mains by a transformer.
An input to connect a device protecting against dry running
(potential free contact) is provided.
With a button (Pos.B) on the front of the panel it is possible to
manually start the pump. This is useful, for example, for priming
operations during the commissioning of the set.
A
B
11.

Control panel of the duty electrical pump

The duty electrical pumps are each controlled by an independ-
ent control panel, which provides easy reading of the measure-
ment instruments and signals from a single observation point.
To ensure greater safety for operators, the control pressure
switch is powered by low voltage, isolated from the mains by a
transformer.
The outputs listed below in accordance with the EN 12845
standard are provided for supervising the pumping set from a
control room:
Contact type: AC1, potential-free relay contacts,
Max. voltage: 115 V
Max. current: 2 A
Refer to the electrical diagram for the connection and specific
functionality of each output.
Signalling Description
Electric the closing of the contact indicates the absence
mains: of the mains voltage.
12
Motor the closing of the contact indicates the absence
voltage: of the voltage to the motor when the pump
operation is required.
Starting the closing of the contact signals the start
request: request.
Pump in the closing of the contact signals the actual
operation: starting of the electrical pump.
Failure the closing of the contact signals the pump did
to start: not start after a call to enter in operation.
The panels include the following components and functions
available on the front door:
Pos. Component
A ammeter.
TEST-0-AUT operation mode selector, with removable
B
key in AUT position.
C general door lock disconnecting switch, padlockable.
D EPC 300 control unit with buttons and warning lights.
D
B
The EPC 300 control unit (Pos.D) has a user interface that
shows the following operation buttons:
I: Manual start button.
0: Manual stop button.
TEST LED: when pressed, all the LEDs light up
and activates a signalling output dedicated.
P1 – P2: for the starting pressure switches
testing.
Additionally, the following light signals:
• main supply – green LED lit indicates voltage on the three
phases of the mains supply,
• pump on demand – yellow LED lit indicates pump starting
request,
• pump running – red LED lit indicates pump in operation,
• power available to the motor – yellow LED lit indicates incor-
rect motor power supply after a starting request,
• start failure – yellow LED lit indicates no pump starting.
A
C