Midea MCCDH30A-TA3SL, Technical & Service Manual

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Air-cooled modular chiller unit
1
1 .3.1 Precautions:
1. The air-conditioner should apply special power supply, whose voltage should conform to rated voltage.
2. Wiring construction must be conducted by the professional technicians according to the labeling on the
circuit diagram.
3. Only use the electric components specified by our company, and require installation and technical
services from the manufacturer or authorized dealer. If wiring connection fails to conform to electric
installation norm, failure of the controller, electronic shock, and so on may be caused.
4. The connected fixed wires must be equipped with full switching-off devices with at least 3mm contact
separation.
5. Set leakage protective devices according to the requirements of national technical standard about electric
equipment.
6. After completing all wiring construction, conduct careful check before connecting the power supply.
7. Please carefully read the labels on the electric cabinet.
8. The user‟s attempt to repair the controller is prohibited, since improper repair may cause electric shock,
damages to the controller, and so on. If the user has any requirement of repair, please contact the
maintenance center.
1 .3.2 Power supply specification
Items
Model
Outdoor power supply
Wiring
Power supply Manual switch Fuse
0&&+$7$6/
0&'+$7$6/
380~415V 3Ph
～
50Hz 50A 36A
10mm
2
(<30m)
0&&+$6$/ 380~400V 3Ph
～
50Hz 150A 100A
16mm
2
(<20m)
0&&'$6$/ 380~415V 3Ph
～
50Hz 150A 100A
16mm
2
(<20m)
0&&+$6$/
380~400V 3Ph
～
50Hz 250A 200A
Base on the actual distance of the
wire, more than 35 mm
2
for each
module
0&&+$6$ 380~400V 3Ph
～
50Hz 400A 300A
According to the actual distance of
wiring,70mm2 or lager for each unit.
0&&+$6$7 380~400V 3Ph
～
50Hz 450A 350A
According to the actual distance of
wiring,185mm2 or lager for each unit.
1 .3.3 Requirements of wiring connection
● No additional control components are required in the electric cabinet (such as relay, and so on), and the
power supply and control wires not connected with the electric cabinet are not allowed to go through the
electric box. Otherwise, electromagnetic interference may cause failure of the unit and control components
and even damages to them, which thus lead to protective failure.
● All cables led to the electrical box should be supported independently but by the electric box.
● The strong current wires generally pass the electrical box, and 220V alternating current may also pass the
control board, so wiring connection should conform to the principle of separation of strong current and weak
current, and the wires of power supply should be kept more than 100 mm away from the control wires.