309 B/C – 03/03 A
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All cables should not contact with refrigerating piping and moveable components such as compressor and
fan motor etc.
Caution
At emergency (if you smell something burning), stop operation and turn the power source switch off, ask for
your dealer’s instruction. Continuing the operation without eliminating the emergency state may cause a
machine trouble, fire, or electrical shock.
Don’t extend your fingers or other foreign pieces such as stick into unit air outlet, otherwise the unit could be
damaged or you could be injured.
Electrical Data
Model
M4AC 080C(CR)
M4AC100C(CR)
Power Supply
380v/3n~/50hz
Total Input( W)
8770
10570
Running Current( A)
17.5
20.1
Cross Section Area(Mm²)
6
Power Cable
Q.ty
5
Model
M4AC 120C(CR)
M4AC150C(CR)
Power Supply
380V/3N~/50Hz
Total Input( W)
12920
15500
Running Current( A)
24.8
28.5
Cross Section Area(Mm²)
6
Power Cable
Q.ty
5
Electrical Connection Of Auxiliary Electric Heater
If auxiliary electric heater or auxiliary gas heater installation is required, please do installation after thoroughly reading
corresponding manual. Carry out the electrical connection according to the diagram below so that achieve their
automatic on/off governed by the unit controller. In addition, contact with local McQuay service representative for
performing trail startup.
Servicing and Maintenance
Servicing
Service and maintenance are to be performed only by qualified personnel who are well trained with refrigeration
engineering. Before restart the unit, do a thorough check and analysis of the unit safety control components.
The optimum design of the refrigerating system eliminates the possibility of problems being occurred during normal
operation. There is no need to conduct any maintenance to refrigerant piping if the unit is under normal running.
A-HT
N
L1
HEAT
4WV
N
N
POWER SUPPLY
AUXI LI ARY ELECTRI C HEATER TERMI NAL BLOCK
UNI T ELECTRI CAL BOX TERMI NAL BLOCK