PRO-
76
EN
PRO- CONTROL PANEL
3.1 SAFETY WARNINGS
Device installation, commissioning and maintenance opera-
tions can be dangerous if some precautions are not followed.
Only qualified and trained professionals must work on
the
product
and
on
the
system.
You are also reminded to:
1. Follow all safety standards provided for this type of instal-
lation.
2. Wear
all
personal
protective
equipment
provided for by the standard (goggles, gloves, etc.).
3. Use suitable equipment to handle the product (pallet jacks,
cranes, etc.).
Access to
electrical components is allowed to qualified personnel
only. Before starting any intervention, it is recommended
to disconnect the unit from the power supply by discon-
necting the device from the mains.
This product is complying with the regulation on
electromagnetic compatibility.
For the connection of
Pro-
control panel to the
unit
refer
to
the
wiring
diagrams
supplied
with the machine.
3.2 DESCRIPTION OF THE CONTROL PANEL
General information
Pro–Dialog is an electronic control panel integrated in the
units of the NXC/NXH series. It can manage:
• Compressor start to check the water circuit
• Fans, in order to optimise the operations of each
cooling circuit.
Pro-
features three control types on the unit:
• Through the panel on the unit or connected to it (LOCAL
mode).
• Through dry contacts (REMOTE mode).
• Through a specific tool (CCN mode).
The selection of the type of control must be set immediately on
Pro-
, through the control keyboard.
The
Pro-
control manages also:
• Water circulators (one or two): in case of two circulators
it manages the automatic switching between the pumps.
• Heater of the plate exchanger (if any).
• Boiler: There is an output managing the start / stop of an
auxiliary boiler.
Find below some abbreviations that will be often used in the
following paragraphs.
LED
Light Emitting Diode
LEN
Bus connecting mother board
with Slave
SCT
Saturated condensing temperature
SSC
Saturated suction temperature
EXV
Electronic expansion valve
PD-AUX Board auxiliary input/output