SECTION 22: HEATING AND AIR CONDITIONING
DOB 2490-2789 | X3-45 Commuter PA1605 Maintenance Manual (Final Version – Rev.2 April 2016)
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FIGURE 17: REMOVING RECIRCULATING AIR FILTER
4.3 PASSENGERS’ SECTION AIR FILTER
The passengers’ section air filter is located in
the evaporator compartment above the
Evaporator coil and fans (Figure 18).
The vehicle is fitted with disposable filters.
Open access panel by turning the quarter-turn
screws, and slide out filters to exchange.
FIGURE 18: PASSENGERS' SECTION AIR FILTER
22375
MAINTENANCE
Replace filters every 6000 miles.
CAUTION
Do not use high pressure water jet to avoid
damaging filter. Be sure not to reverse filter
upon installation.
4.4 PARCEL RACK FAN AIR FILTER
The air filters are accessible from the two
vehicle parcel racks equipped with A/C units
(center of the vehicle, both side). Slide the filter
in and out using the tab fixed on the side of the
filter. (Figure 19)
FIGURE 19: PARCEL RACK FAN AIR FILTER
MAINTENANCE
Slide out filters, back flush with water then dry
with air and reinstall. This procedure should
be done every 6000 miles.
5.
HVAC SYSTEM PARTICULARITIES,
TESTING AND TROUBLESHOOTING
Before undertaking any troubleshooting on the
HVAC system, study the appropriate wiring
diagrams to get a complete understanding of the
HVAC components circuitry, read and
understand section 06: ELECTRICAL of this
manual under "Troubleshooting And Testing The
Multiplex Vehicles" and "Test Mode For
Switches And Sensors". The information
included in these paragraphs is necessary for
troubleshooting the HVAC system on Multiplex
vehicles.
5.1 ON DEMAND DISPLAY OF A/C
COMPRESSOR HIGH AND LOW SIDE
PRESSURE
Refrigerant pressures can be displayed in the
Driver Information Display (DID) by selecting
“Gauges” menu and pressing the down arrow to
the fifth displayed screen.
A/C Compressor Pressure
Displays the A/C
compressor suction
pressure value
(LoS=low side) and
discharge pressure
value (HiS=high side).
