Dodge Sprinter 2006 Manual page 2063

VA
r ea r A/C com pr essor oper a t ion wh en t h e r ea r dis-
ch a r ge lin e pr essu r e a ppr oa ch es h igh levels, a n d a lso
r edu ces elect r ica l su r gin g fr om r ea r A/C clu t ch
en ga gem en t .
Th e r ea r A/C h igh pr essu r e swit ch con t r ols r ea r
A/C con den ser coolin g fa n oper a t ion by m on it or in g
t h e r ea r disch a r ge lin e pr essu r e. Wh en t h e r ea r dis-
ch a r ge pr essu r e r ises a bove a ppr oxim a t ely 1900 t o
2200 kP a (280 t o 320 psi) t h e r ea r A/C con den ser
coolin g fa n will t u r n on . Th e r ea r con den ser coolin g
fa n will t u r n off wh en t h e r ea r disch a r ge pr essu r e
dr ops t o a ppr oxim a t ely 1600 kP a (235 psi).
Th e r ea r A/C h igh pr essu r e swit ch con t a ct s open
wh en t h e r ea r disch a r ge lin e pr essu r e r ises a bove
a ppr oxim a t ely 3100 t o 3375 kP a (450 t o 490 psi). Th e
r ea r A/C h igh pr essu r e swit ch con t a ct s close wh en
t h e r ea r disch a r ge lin e pr essu r e dr ops t o a ppr oxi-
m a t ely 1860 t o 2275 kP a (270 t o 330 psi).
Th e r ea r A/C h igh pr essu r e swit ch is fa ct or y-ca li-
br a t ed a n d ca n n ot be a dju st ed or r epa ir ed a n d, if
fa u lt y or da m a ged, it m u st be r epla ced. Refer t o t h e
a ppr opr ia t e wir in g in for m a t ion for com plet e H VAC
wir in g dia gr a m s.
REMOVAL
WARNING: Refer to the applicable warnings and
cautions for this system before performing the fol-
lowing operation (Refer to 24 - HEATING & AIR
CONDITIONING/PLUMBING - WARNINGS) and (Refer
to 24 - HEATING & AIR CONDITIONING/PLUMBING -
CAUTIONS). Failure to follow the warnings and cau-
tions could result in possible personal injury or
death.
(1) Discon n ect a n d isola t e t h e n ega t ive ba t t er y
ca ble.
(2) Rem ove t h e a ir filt er fr om t h e r ea r A/C eva po-
r a t or h ou sin g (Refer t o 24 - H E ATING & AIR CON-
DITIONING/DISTRIBUTION - RE AR/AIR F ILTE R -
RE MOVAL).
(3) Recover t h e r efr iger a n t fr om t h e r ea r r efr iger-
a n t syst em (Refer t o 24 - H E ATING & AIR CONDI-
TIONING/P LUMBING - STANDARD P ROCE DURE -
RE F RIGE RANT RE COVE RY).
(4) Rem ove t h e cover fr om t h e r ea r A/C con den ser
h ou sin g (Refer t o 24 - H E ATING & AIR CONDI-
TIONING/DISTRIBUTION
DE NSE R COVE R - RE MOVAL).
(5) Discon n ect t h e wir e h a r n ess con n ect or fr om t h e
r ea r A/C h igh pr essu r e swit ch (F ig. 8).
(6) Rem ove t h e r ea r A/C h igh pr essu r e swit ch a n d
in st a ll a plu g in t o, or t a pe over t h e open ed r ea r dis-
ch a r ge lin e fit t in g.
- RE AR/A/C CON-
Fig. 8 Rear A/C High Pressure Switch
1 - REAR A/C CONDENSER
2 - WIRE HARNESS CONNECTOR
3 - REAR A/C HIGH PRESSURE SWITCH
4 - REAR DISCHARGE LINE FITTING
INSTALLA TION
NOTE: Replacement of the PTFE thread sealing
tape is required anytime the rear A/C high pressure
switch is removed from the rear discharge line. Fail-
ure to replace the sealing tape could result in a rear
refrigerant system leak.
(1) Rem ove t h e t a pe or plu g fr om t h e r ea r dis-
ch a r ge lin e fit t in g.
(2) In st a ll P TF E t h r ea d sea lin g t a pe on t o t h e r ea r
A/C h igh pr essu r e swit ch a n d in st a ll t h e swit ch on t o
t h e r ea r disch a r ge lin e. Tigh t en ed t h e A/C h igh pr es-
su r e swit ch t o 10 N·m (88 in . lbs.).
(3) Con n ect t h e wir in g h a r n ess con n ect or t o t h e
r ea r A/C h igh pr essu r e swit ch .
(4) Recon n ect t h e n ega t ive ba t t er y ca ble.
(5) E va cu a t e t h e r ea r r efr iger a n t syst em (Refer t o
24 - H E ATING & AIR CONDITIONING/P LUMBING
- STANDARD P ROCE DURE - RE F RIGE RANT SYS-
TE M E VACUATE ).
(6) Ch a r ge t h e r ea r r efr iger a n t syst em (Refer t o 24
- H E ATING & AIR CONDITIONING/P LUMBING -
STANDARD P ROCE DURE - RE F RIGE RANT SYS-
TE M CH ARGE ).
(7) In st a ll t h e r ea r a ir filt er (Refer t o 24 - H E AT-
ING & AIR CONDITIONING/DISTRIBUTION
RE AR/AIR F ILTE R - INSTALLATION).
(8) In st a ll t h e cover on t o t h e r ea r A/C con den ser
h ou sin g (Refer t o 24 - H E ATING & AIR CONDI-
TIONING/DISTRIBUTION
DE NSE R COVE R - INSTALLATION).
CONTROLS - REAR 24 - 31
- RE AR/A/C
-
CON-