Replacement Interventions; Extraordinary Maintenance List; Extraordinary Maintenance; Replacement Of Component Connected To Refrigerant Circuit - MAHLE ACX380 Service Manual

15

Replacement interventions

15.1 Extraordinary
SERVICE OPERATION DESCRIPTION
Vacuum pump replacement
Vacuum pump oil replacement
Replacement of PNEUMATIC SUCTION
UNIT, or single components
Mechanical expansion valve
Oil distiller receiver and compressor
oil restore separator
Compressor
Heat exchangers
Fans
Cleaning and/or replacement of
refrigerant charge solenoid valve
Cleaning and/or replacement of HP-LP
on-off solenoid valve
Cleaning and/or replacement of vacuum
solenoid valves pair
Cleaning and/or replacement of
exhausted oil discharge solenoid valve
Cleaning and/or replacement of non-
condensable gas discharge solenoid
valve of accumulation receiver
Replacement of LP or HP side pressure
sensor
Replacement of tank pressure sensor
Replacement of HP vehicle quick coupler
Replacement of LP vehicle quick coupler
Dryer filter replacement
Replacement of refrigerant accumulation
receiver with safety valve
Refrigerant scale replacement
Replacement of HP side pressure gauge
Replacement of LP side pressure gauge
Replacement of logic electronic board
with display
Replacement of electronic power board
Replacement of power supply board
15.2 Extraordinary
15.2.1
Replacement of component
connected to refrigerant circuit
The components (pressurised equipment)
constituting/connected to the refrigerant fluid circuit through
permanent junctions, such as sealing or brazing, can in no way
be disassembled, replaced, changed or handled.
Before each check and/or replacement intervention of
components inside the machine it is recommended to firstly
carry out the following operations:
Apply the 2 service hoses in the supports on the side of the
machine and close the taps counter clockwise.
maintenance list
maintenance
| ACX380/480 | 28
1. Switch off the machine, remove the power supply cable
and open the cover and the front panel.
2. Close tap/knob (outlet) of the tank/cylinder (where there is
the hose that connect the vessel to the manifold).
Fig. 34: Outlet tap of the internal bottle
3. Reconnect the power supply cable, turn on the machine
(do not touch terminals or printed circuit boards)
4. Open the Maintenance menu
5. Select Manual Activations – Insert the password "DEBUG"
6. In manual activations activate R, I, A, C, wait for the LP
gauge to show a pressure of at least - 0.3 bar,
7. Switch off the machine and remove the power supply
network cable
8. Close the tap/knob (inlet) of the tank/cylinder (where there
is the hose that connect the compressor group to the
vessel).
en