BMW 3: Electric A/C compressor
.png)
Electric A/C compressor (EKK)
- Signal connector
- Low pressure line (gaseous refrigerant at low temperature and low pressure)
- High-voltage connector
- High pressure line (gaseous refrigerant at high temperature and high pressure)
- Electric A/C compressor (EKK)
The electric A/C compressor is a high-voltage component
.png)
Warning for high-voltage components
Each high-voltage component has on its housing an identifying label that enables Service employees and vehicle users to intuitively identify the possible hazards that can result from the high electric voltages used.
Only Service employees who satisfy all the prerequisites are permitted to work on the designated high-voltage components: suitable qualifications, compliance with the safety rules, procedure following the exact repair instructions.
For warranty reasons and reasons of high-voltage safety, the electric A/C compressor must not be opened or otherwise dismantled.
Before working on a high-voltage component, you must apply the safety rules to shut down the high-voltage system. Once this has been accomplished according to procedure, all high-voltage components are no longer live and work can proceed in safety. There is, of course, a remote possibility that the correct shutdown procedure might be omitted, so an extra safety precaution is implemented as a means of imposing an automatic shutdown of the high-voltage system.
The high-voltage connector of the electric A/C compressor is not part of the high-voltage interlock loop. A contact bridge is integrated in the high-voltage connector of the G20 PHEV, which interrupts the voltage supply to the control unit of the EKK if the high-voltage connector is pulled off. This prevents power consumption of this high-voltage component.
To compress the refrigerant, the spiral compressor (also known as the scroll compressor) is used.
The electric power of the electric A/C compressor is 4.5 kW.
The high voltage for the EKK is in a voltage range between approximately 205 V and 410 V. Above and below this voltage range the power is reduced or the EKK is switched off.
READ NEXT:
Stationary cooling
Owing to the fact that the air conditioning compressor in the G20 PHEV is
electrically operated and
that the high-voltage battery unit has high energy and power densities, a
stationary climate
Installation locations and connections
G20 PHEV, heater circuit
Electric coolant pump
Connection to the coolant circuit
Heat exchanger for heating system
Electrical heating
Electrical changeover valve
Connections at the elect
SEE MORE:
BMW Gesture Control
Concept
Several iDrive functions can be operated by hand
motion using BMW Gesture Control.
Overview
The camera in the roofliner detects gestures that
are carried out in the area of the center console
at the height of the Control Display.
Activating/deactivating
Via iDrive:
1. "CAR".
2. "Settings".
Training
Qualification to work on the high-voltage system of the G20 PHEV (Hybrid
Generation 4.0) can
be acquired via the respective web-based training if the service employee meets
the following
prerequisites:
Performing work on high-voltage components
Valid "High-voltage Components" certification
