SECTION 22: HEATING AND AIR CONDITIONING
12
DOB 2490-2789 | X3-45 Commuter PA1605 Maintenance Manual (Final Version – Rev.2 April 2016)
pressure water, every 100 000 miles. Do not
use a pressure washer as this will damage the
fins. Remove the air filter and brush the
evaporator coil from behind.
Clean the condenser with low-pressure air jet
or a stream of low-pressure water, taking care
not to damage fins.
CAUTION
Direct the pressure straight through the coil to
prevent bending of fins and do not use
extremely high pressure. Do not use hot
water, steam or caustic soap.
FIGURE 13: EVAPORATOR COIL ACCESS PANEL
(TYPICAL)
22309
FIGURE 14: EVAPORATOR COIL CLEANING
22373
FIGURE 15: CONDENSER COMPARTMENT
22311
4.2 DRIVER'S SECTION AIR FILTERS
The driver’s HVAC unit is located behind the
dashboard’s R.H. side panel. To gain access to
the A/C filters, unscrew the grille located at the
top entrance step (FIGURE 16). Unscrew the
plastic cover and slide out the recirculating air
filter (Figure 17). Doing so will give you access
to the fresh air filter (see item 18, Figure 51).
MAINTENANCE
Back flush driver’s unit air filters with water
and then dry with air every 6000 miles.
NOTE
If the windshield is continuously fogged, check
that :
-
the driver’s unit fresh air filter is not
clogged;
-
the fresh air damper (flapper door) is
open, i.e. the RECirculation button on the
HVAC control unit is not engaged.
FIGURE 16: DRIVER'S HVAC UNIT ACCESS GRILL
