53
/04.2016/
G35
EN
7. Start-up
Before you first start up the system install and connect it as described in the “Installation” chap-
ter.
• Make sure the main switch is turned off and that the system is isolated from power mains.
• Check that all power switches in the electric system have been turned off.
• Check that the main electric supply cable and the terminals, including the PE terminals, are correctly connec-
ted.
• Check that contactors can move freely.
• Use the main switch (both on site power supply and on the unit) to switch on the control system.
• Activate the control fuses one by one and the power switches for the fan. On units type
AS
GES
activate also the
power switch of the compressor.
• Check the supply voltage on all phases.
•
Units type AS
: check the supply voltage on all phases
for the remote condenser.
•
Units type CW,
GES
: start either dry-cooler or water
chiller. Verify water circulation and temperature.
•
Unit type AS
GES
: pre-heat the compressor sump for
3-4 hours when first starting up the system or when
re-starting it after a long time out if the conditioner has
been inactive in rooms with temperatures lower than
0°C.
• At this point the electronic board is powered and the single components of the system can be activated to check
for proper operation.
• Set the desired supply air temperature and the desired differential set point (difference between return and supply
air temperature) on the C7000 display.
• Start the climate control system by pressing the ON-OFF push-button on the display.
•
Units type AS
GES
: after about 20 minutes of opera-
tion check the sightglass for air bubbles in the liquid
pipe. If there are bubbles this may have been caused
by a leak and loss of refrigerant. Check the circuit for
leaks. Repair all leaks and refill the circuit with R410A
refrigerant as described in the previous chapter.
•
Units type CW,
GES
: check that there are no water
leakages.
• Check the current that is absorbed by the compressor
(
units type AS
GES
), fans and other optional compo-
nents, comparing these values with those indicated in
technical data.
•
Units type AS
: check also electric consumption of the
remote condenser.
• When the system is operating at normal capacity:
1) check that there are no alarms;
2) check that the fans work properly;
3) check, with the unit operating, that the power supply remains within the values indicated on the rating plate for
the unit;
Shutdown
To shut the unit down, disconnect it from all its power supplies by the corresponding isolating switches.
The ON-OFF key on the C7000 controller is only used to put the unit in stand-by. It must not be
mistaken as a safety component to turn the unit off prior to performing maintenance.
