Audi 100 1991 ➤ , Audi 80 1992 ➤ , Audi A1 2011 ➤ , Audi A1 Sportback 2 ...
Air conditioner with refrigerant R134a - Edition 11.2018
3.4
Refrigerant circuit with electrically driven
air conditioner compressor
Vehicles with high-voltage system (hybrid vehicles)
High voltage! Danger to life!
The voltage levels in the high-voltage system constitute a safety
hazard. Danger of severe or fatal injuries from electric shock.
– Persons with life-sustaining or other electronic medical devi‐
ces in or on their body must not perform any work on the high-
voltage system. Such medical devices include internal anal‐
gesic pumps, implanted defibrillators, pacemakers, insulin
pumps and hearing aids.
– The high-voltage system must be de-energised by a suitably
qualified person.
Risk of injury - engine may start unexpectedly
It is difficult to determine whether the drive system of an electric
vehicle or hybrid vehicle is active. Moving parts can trap or draw
in parts of the body.
– Switch off ignition.
– Place ignition key outside vehicle.
Risk of damage to high-voltage wiring
Incorrect handling may result in damage to the insulation of high-
voltage wires or high-voltage connectors.
– Never use high-voltage wiring or high-voltage connectors as
a support.
– Never prop tools against high-voltage wiring or high-voltage
connectors.
– Never bend or kink high-voltage wiring.
– Pay attention to coding when connecting high-voltage con‐
nections.
♦ For all work on vehicles with high-voltage system, note addi‐
tional warnings for working on such vehicles
⇒ “1 Warning instructions when working on vehicles with high-
voltage system”, page 1 .
♦ If work near high-voltage system components is necessary,
perform a visual check of the high-voltage components and
wires to check for damage ⇒ page 2 .
♦ If work on high-voltage system components is necessary, de-
energise high-voltage system ⇒ Rep. gr. 93 ; De-energising
high-voltage system or ⇒ Electrical system; Rep. gr. 93 ; De-
energising high-voltage system .
3. General information on refrigerant circuit
49
English 
