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Control unit
Voltage
▶ Check that the air and water temperatures are within in the operating
limits.
▶ Start-up the unit.
While the unit is operative, i.e. in stable conditions nearing operating
ones, check:
• Power supply voltage;
• Total consumption of the unit;
• Consumption of the single electric loads.
7.4
Remote controls
Check if the remote controls (ON-OFF etc.) are connected and, if
necessary, enabled with the respective parameters as indicated in the
"electrical connections" section.
Check that probes and optional components are connected and enabled
with the respective parameters ("electrical connections" section).
Scroll compressor (only CS3000 AWP 53 and 59)
Scroll compressors have only one rotation direction. In the case it is
reversed, the compressor is not immediately damaged but it will become
more noisy, and pumping will be jeopardized.
After a few minutes, the compressor shuts down due to the thermal
protection trip. In this case, disconnect the power supply and invert 2
phases on the machine power supply.
Do not let the compressor work for a long time with opposite rotation:
more than 2-3 of these abnormal start-ups can damage it.
To ensure the rotation direction is correct, measure the condensation
and suction pressure.
The pressures must differ significantly: upon start-up, the suction
pressure decreases while the condensation one increases.
7.5
Directive 2014/68 EU PED
Directive 2014/68EU PED also sets out the regulations for unit
installers, users and maintenance operators.
Refer to local regulations; briefly and as an example, see the following:
• Compulsory verification of the first installation:
– only for units assembled on the installer's building site (for ex.
condensing circuit + direct expansion unit);
• Commissioning declaration:
– for all units;
• Periodical checks:
– to be executed with the frequency indicated by the Manufacturer
(see the "maintenance inspections" paragraph).
56
8
Control unit
8.1
HMI overview
Keys of the HMI
Fig. 73
Key
Function
To lockout / unlock
. /
To modify current set point
MENU
To open the various menus from the HOME screen
To move the cursor, change the selection or change the
set value.
The parameter can be quickly changed with a long press.
OK
To confirm an operation
ON/OFF To set the ON/OFF function
BACK
To return to the previous level.
Press to exit the current pages and return to the previous
page.
Long press to return straight to the home screen.
Table 55 Keys of the HMI
NOTICE
Units in modular configuration
On the slave controllers, only the password-protected SERVICE menu
can be opened.
0010044958-001
CS3000 AWP – 6721852570 (2023/04)
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