Refrigerant Circuit Flushing With Compressed Air And Nitrogen - Audi 100 1991 Repair Manual

Audi 100 1991 ➤ , Audi 80 1992 ➤ , Audi A1 2011 ➤ , Audi A2 2001 ➤ , A ...
refrigerant oil still inside the removed A/C compressor
⇒ "5 Removal and Installation", page 191
refrigerant oil. Refer to
⇒ "3.4 Refrigerant Oil Capacities", page 119
Note
There is a defined and prescribed amount of refrigerant oil in
♦
the replacement compressor. If the vehicle has two evapora‐
tors, then there refrigerant circuit requires a specific quantity
of refrigerant oil. Refer to ⇒ Heating, Ventilation and Air Con‐
ditioning; Rep. Gr. 87 ; Removal and Installation (vehicle-
specific repair manual) and
⇒ "3.4 Refrigerant Oil Capacities", page 119
If the A/C compressor is not be replaced, the quantity of re‐
♦
frigerant oil in the A/C compressor must be topped off to the
prescribed capacity (tilt the refrigerant oil out and refill the pre‐
scribed quantity into the A/C compressor or refrigerant circuit).
Refer to ⇒ "5 Removal and Installation", page 191
⇒ "3.4 Refrigerant Oil Capacities", page 119
– Reassemble the refrigerant circuit completely. Refer to ⇒
Heating, Ventilation and Air Conditioning; Rep. Gr. 87 ; Re‐
moval and Installation (vehicle-specific repair manual).
– Evacuate and recharge refrigerant circuit according to speci‐
fication. Refer to
⇒ "2.4.11 Evacuating Refrigerant Circuit", page 89
⇒ "2.4.3 Charging Refrigerant Circuit", page 83
– Start up A/C system according to specification. Refer to ⇒
Heating, Ventilation and Air Conditioning; Rep. Gr. 87 ; Re‐
moval and Installation and
⇒ "2.4.1 A/C System, Operating after Charging", page 79
1.4.12 Refrigerant Circuit Flushing With Com‐
pressed Air and Nitrogen
Compressed air and nitrogen are to be used in order to force out
moisture and other contaminants as well as old refrigerant oil as
efficiently as possible, without wasting refrigerant. Clean refrig‐
erant circuit (flush with refrigerant R134a or blow through with
compressed air and nitrogen).
Refrigerant R134a Servicing - Edition 01.2011
and fill with new
.
.
and
.
and
.
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
.
29
1. General Information