McQuay 5ACV 30 CR, Installation Manual

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1-6
English
1. A 3V DC battery is supplied with the LCD. It is used to ensure that the LCD displays real time once the timer is set.
2. The LCD is wired to the main board via CN8 connection. (This is factory installed)
If the wiring between the LCD and PCB must be longer, an
alternative is used. Use a 4-core wire of the desired length and
connect this wire between the terminal block CN2 on the LCD to the terminal block CN5 on the PCB. Ensure that the
correct wire terminals are connected .
3. Networking between chillers can be carried out. Connect the wire as shown
• Maintenance service of the mini chiller must be carried out by qualified persons.
• The unit is easily accessible for servicing and maintenance by accessing the front panel of the unit (for electrical components)
and the panel door (for refrigerant and water circuit).
• For consistent performance it is recommended that a routine maintenance of cleaning the coil surfaces to conducted
because of dusty surroundings.
• It is also recommended that regular checks on the water strainer to be conducted. Change the water strainer if it is dirty or
choked.
MAINTENANCE
When removing the LCD panel from the bracket,
Step 1 Step 2
Remove the LCD panel
from the bottom part first
with help of a screw driver
Remove the
LCD panel
Factory installed
Alternative wiring between LCD panel and PCB
For networking only
A
A
A
B
B
B 12V
12V
12V
GND
GND
GND
JP13
CN8
CN2
CN5
Main Board Unit 00
LCD Panel
PCB Unit 01
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CAUTION
• Do not attempt to do any service or maintenance when the unit is operating.
• Do not spray any chemical agents or flammable agents to the unit. It could cause fire or explosion.
LCD PANEL INSTALLATION
• The unit comes with a LCD panel installed. To change the position or re-install the LCD panel, follow the installation
guide below.
When fastening the LCD panel to the bracket,
Step 1 Step 2 Hook the LCD panel
from the top first
Push to fasten the LCD
panel to the bracket