Suction Circuit Components; Non-Permanent Junction; Electrical Connections - MAHLE AIR-NEX 9380 Service Manual

11.5

Suction circuit components

The suction circuit is a group made up of various The suction circuit is a group made up of various
pressurised equipment connected through hoses and/or pressurised equipment connected through hoses and/or
brazed piping.
A routine maintenance operation is the replacement of the A routine maintenance operation is the replacement of the
dryer filter, the procedure of which is outlined in the user dryer filter, the procedure of which is outlined in the user
manual.
Safety against the risk due to pressure of the refrigerant Safety against the risk due to pressure of the refrigerant
fluid inside the suction unit is ensured by a safety pr
switch and a thermal
manufacturing.
In case of replacement of one of these safety devices one of these safety devices use
new and original spare parts.
The assistance centre is responsible for workmanlike The assistance centre is responsible for workmanlike
assembly and for checking before new commissi assembly and for checking before new commissioning
according to the prescriptions provided for by the according to the prescriptions provided for by the
regulations in force in the country of use; in particular, the regulations in force in the country of use; in particular, the
assistance centre will have to guarantee that the assistance centre will have to guarantee that the
components ensure a perfect tightness and that the safety components ensure a perfect tightness and that the safety
components are installed appropriately so as to ensure
operation is not jeopardized.
Fig. 25: Suction circuit position
PRESSURE SWITCH ACB-2UB949W o ACB-2UB1145W
13/18bar 1/4SAE Category IV (Dir. 2014/68/EU)
Pressure Safety Switch
(on the red circle)
© MAHLE
pressure
fuse both installed installed during during
ropriately so as to ensure
2UB1145W
12

Non-permanent junction

Here below some instructions on the use of Loctite® 577 on the Here below some instructions on the use of Loctite® 577 on the
thread of some non-permanent junctions in the pneumatic circuit of permanent junctions in the pneumatic circuit of
the ACX stations.
The product polymerizes when air is absent and when in contact The product polymerizes when air is absent and when in contact
;
with metal its aim is preventing slackening caused by impacts and
vibrations. Yet, after application and fixing onto the junction/thread, vibrations. Yet, after application and fixing onto the junction/thread,
you must tighten and then wait several hours, in relation to the type you must tighten and then wait several hours, in relation to the type
of coupling between metals, before the product can get its of coupling between metals, before the product can get its
maximum performance in terms of hold/resistance. terms of hold/resistance.
For one's own and other people's safety, the operator/user of the For one's own and other people's safety, the operator/user of the
Loctite® 577 product must consider that it must be employed in Loctite® 577 product must consider that it must be employed in
well-ventilated premises and that protecting eyes and hands with ventilated premises and that protecting eyes and hands with
suitable PPE (personal protective equipment) is required. For
compulsory safety provisions to be followed when using the compulsory safety provisions to be followed when using the
product, the user shall refer to the safety data sheet of Loctite® 577 product, the user shall refer to the safety data sheet of Loctite® 577
manufacturer.
For further details on the product characteristics/performance and For further details on the product characteristics/performance and
application instructions, please refer to the technical data sheet of ctions, please refer to the technical data sheet of
Loctite® 577 manufacturer.
Generally the points of insertion of Loctite® 577 only in one spot Generally the points of insertion of Loctite® 577 only in one spot
with anti-rotation purpose are on connection/fittings where there is rotation purpose are on connection/fittings where there is
not an O-ring/seal, before to apply it clean well the surfaces.

13 Electrical connections

Electrical connections
The electrical connections are described on the following The electrical connections are described on the following
APPENDIX:
APPENDIX 3 – AIR-NEX 9380/9480 - ELECTRICAL CONNECTION
LOGIC ELECTRONIC BOARD
APPENDIX 4 – AIR-NEX 9380/9480 - ELECTRICAL CONNECTION
POWER ELECTRONIC BOARD AND POWER SUPPLY POWER ELECTRONIC BOARD AND POWER SUPPLY
APPENDIX 5 – AIR-NEX 9380/9480 - ELECTRICAL CONNECTION
STATUS AND WARNING INDICATOR LIGHT ELECTRONIC BOARD STATUS AND WARNING INDICATOR LIGHT ELECTRONIC BOARD
| AIR- -NEX 9380/9480 | 19 en
junction
slackening caused by impacts and
quipment) is required. For
lean well the surfaces.
ELECTRICAL CONNECTION –
ELECTRICAL CONNECTION –
ELECTRICAL CONNECTION –