1995 NISSAN ALMERA N15 refrigerant type

PRECAUTIONSANDPREPARATION
Precautions forWorking withHFC-134a (R-134a)

WARNING:
• CFC-12 (R-12)refrigerant andHFC-134a (R-134a)refrigerant arenotcompatible. Theserefrigerants
must never bemixed, eveninthe smallest amounts. Ifthe refrigerants aremixed, compressor fail-
ure islikely tooccur .
• Use only specified lubricantforthe HFC-134a (R-134a)
A/C
system andHFC-134a (R-134a)compo-
nents. Iflubricant otherthanthatspecified isused, compressor failureislikely tooccur .
• The specified HFC-134a (R-134a)lubricant rapidlyabsorbs moisture fromtheatmosphere. Thefol-
lowing handling precautions mustbeobserved:
a: When removing refrigerant components fromavehicle, immediately cap(seal) thecomponent
to minimize theentry ofmoisture fromtheatmosphere.
b: When installing refrigerant components toavehicle, donot remove thecaps (unseal) untiljust
before connecting thecomponents. Connectallrefrigerant loopcomponents asquickly aspos-
sible tominimize theentry ofmoisture intosystem.
c: Only usethespecified lubricantfr.omasealed container. Immediately resealcontainers of
lubricant. Withoutpropersealing, lubricant willbecome moisture saturated andshould notbe
used.
d: Avoid breathing
A/C
refrigerant andlubricant vaporormist. Exposure mayirritate eyes,nose
and throat. Remove R-134afromthe
A/C
system, usingcertified serviceequipment meeting
requirements ofSAE J2210 (R-134a recycling eqUipment), orJ2209 (R-134a recovery equipment).
If accidental systemdischarge occurs,ventilate workareabefore resuming service.Additional
health andsafety information maybeobtained fromrefrigerant andlubricant manufacturers.
e: Do not allow lubricant (Nissan
A/C
System OilType S)tocome incontact withstyrofoam parts.
Damage mayresult.

GeneralRefrigerant Precautions

WARNING:
• Donot release refrigerant intotheair. Use approved recoverylrecycling equipmenttocapture the
refrigerant everytimeanair conditioning systemisdischarged.
• Always weareyeand hand protection (gogglesandgloves) whenworking withanyrefrigerant or
air conditioning system.
• Donot store orheat refrigerant containersabove52°C(125°F).
• Donot heat arefrigerant containerwithanopen flame; ifcontainer warmingisrequired, placethe
bottom ofthe container inawarm pailofwater.
• Donot intentionally drop,puncture, orincinerate refrigerant containers.
• Keep refrigerant awayfromopen flames: poisonous gaswillbeproduced ifrefrigerant burns.
• Refrigerant willdisplace oxygen,therefore becertain towork inwell ventilated areastoprevent
suffocation.
• Donot introduce compressed airtoany refrigerant containerorrefrigerant component.

HA-3
•

PRECAUTIONSANDPREPARATION
Precautions forRefrigerant Connection

WARNING: Make sureallrefrigerant isdischarged intotherecycling equipment andthepressure inthe system is
less than atmospheric pressure.Thengradually loosenthedischarge sidehose fitting andremove it.
CAUTION:
When replacing orcleaning refrigerant cyclecomponents, observethefollowing.
• When thecompressor isremoved, storeitin the same position asitis when mounted onthe car.
Failure todo sowill cause lubricant toenter thelow pressure chamber.
• When connecting tubes,always useatorque wrench andaback-up wrench.
• After disconnecting tubes,immediately plugallopenings toprevent entryofdirt and moisture.
• When installing anair conditioner inthe vehicle, connect thepipes asthe final stage ofthe opera-
tion. Donot remove theseal caps ofpipes andother components untiljustbefore required forcon-
nection.
• Allow components storedincool areas towarm toworking areatemperature beforeremoving seal
caps. Thisprevents condensation fromforming inside
AIC
components.
• Thoroughly removemoisture fromtherefrigeration systembeforecharging therefrigerant.
• Always replace usedO-rings.
• When connecting tube,apply lubricant toportions showninillustration. Becareful nottoapply
lubricant tothreaded portion.
Lubricant name:Nissan
AIC
System OilType R
Part number: KLHOO-PAGRO
• O-ring mustbeclosely attached toinflated portionoftube.
• After inserting tubeintounion untilO-ring isno longer visible, tightennuttospecified torque.
• After connecting line,conduct leaktestand make surethatthere isno leakage fromconnections.
When thegas leaking pointisfound, disconnect thatlineand replace theO-ring. Thentighten con-
nections ofseal seattothe specified torque.

O-ring
Apply lubrication oil.

NG

NG
OK -
Inflated portion
SHA525DA
HA-4

PRECAUTIONSANDPREPARATION
Special Service Tools(Cont'd)
CR-14 compressor

Tool number
Tool name
KV99106700
Clutch discwrench
KV991 06800
Pulley installer Description

NT351
NT352
Removing
shaftnutand clutch disc
Installing pulley

HFC-134a (R-134a)ServiceToolsandEquipment

Never mixHFC-134a refrigerant and/oritsspecified lubricantwithCFC-12 (R-12)refrigerant and/orits
lubrication oil.
Separate andnon-interchangeable serviceequipment mustbeused foreach typeofrefrigerant/
lubricant.
Refrigerant containerfittings,servicehosefittings andservice equipment fittings(equipment which
handles refrigerant and/orlubricant) aredifferent between CFC-12(R-12)andHFC-134a (R-134a).This
is to avoid mixed useofthe refrigerants/lubricant.
Adapters thatconvert onesize fitting toanother mustnever beused: refrigerant/lubricant contamina-
tion willoccur andcompressor failurewillresult.

Tool name
Description Note
HFC-134a (R-134a)refrig-

~~
Container
color:Lightblue
erant Containermarking:HFC-134a (R-134a)
Fitting size:Thread size
• large contai ner1/2"-16 ACME

NT196

Nissan A/CSystem Oil Type:Polyalkyline glycoloil(pAG), typeR
Type R

~
Application:
HFC-134a(R-134a)vanerotary
(Part No.:KLHOO-PAGRO)
compressors(Nissanonly)
Lubricity: 40me (1.4 Imp
fI
oz)

NT197

Recovery/Recycling/
~
Function:
Refrigerant RecoveryandRecy-
Recharging equipment

":'s
Q"'~
cling
andRecharging

==

•

~ t:J
~

II

NT195
HA-6

SERVICEPROCEDURES

Maintenance ofLubricant Quantityin
Compressor

The lubricant inthe compressor circulatesthroughthesystem
with therefrigerant. Addlubricant tocompressor whenreplac-
ing any component orafter alarge gasleakage occurred. Itis
important tomaintain thespecified amount.
If lubricant quantityisnot maintained properly,thefollowing
malfunctions mayresult:
• Lack oflubricant: Maylead toaseized compressor
• Excessive lubricant:Inadequate cooling(thermal exchange
interference)

LUBRICANT

Name: Nissan
Ale
System OilType R
Part number:
KLHOO-PAGRO

CHECKING ANDADJUSTING

Adjust thelubricant quantityaccording tothe flowchart shown
below.

START
~

Can lubricant returnoperation beper- Yes
Perform lubricant returnoperation, proceeding asfollows:
formed?
-+

• AIC
system worksproperly. 1.Start engine, andsetthefollowing conditions:
• There isno evidence ofalarge amount •Test condition
of lubricant leakage. Engine
speed:Idlingto1,200 rpm
AlC orAUTO switch: ON
No Blowerspeed:Max.position
Temp. control: Optional [Setsothat Intake airtemperature is
25 to30°C (77to86°F).]
2. Next itemisfor V-5 orV-6 compressor. Connectthemanifold
gauge, andcheck thatthehigh pressure sidepressure is588 kPa
(5.9 bar, 6kg/cm
2,
85psi) orhigher,

If
less than thereference level,attach acover tothe front faceof

~
the
condenser toraise thepressure.
Should thecompressor bereplaced?
3.

Perform lubricant returnoperation forabout 10minutes.

4.
Stop engine.
No Yes
CAUTION:

If
excessive lubricantleakageisnoted, donot perform thelubricant
return operation.

@

(Go tonext page.)
Is there anypart tobe replaced? Yes
Afterreplacing anyof.the following majorcomponents, addthecor-
(Evaporator, condenser,liquidtankorin
-..

rectamount oflubricant tothe system.
case there isevidence ofalarge amount Amountoflubricant tobe added
of lubricant leakage.)

Lubricanttobe added to

No
Part
replaced system
Remarks
Amount oflubricant
mf (Imp IIoz)
Evaporator 75(2.6)

-

Condenser 75(2.6)
-

Liquid tank 5(0.2) Add
ifcompressor isnot
replaced. '1

Carry outthe
AIC
performance test.

~
In
case ofrefrigerant leak 30
(11) Largeleak

-
Small
leak'2

.

*1:Ifcompressor isreplaced. additionoflubricant isincluded inthe
flow chart.
*2: Ifrefrigerant leakissmall, noaddition oflubricant isneeded.

HA-68

COMPRESSOR SERVICE
DATAANDSPECIFICATIONS (50S)
General Specifications
LUBRICANT

GA15DE,
SR20DE GA14DE
GA16DE
engine engineandCD20
Model engines
CALSONIC ZEXELZEXEL
make makemake
CR-14 DKV-14D DKV-11D
Type Vanerotary
Displacement 144(8.79) 140(8.54) 110(6.71)
cm
3
(cuin)/Rev
Direction ofrotation Clockwise
(Viewed fromdrive end)
GA engine model:PolyV
Drive belt SRengine model:PolyV
CD engine model:TypeA ZEXEL
make
CALSONIC make
Model DKV-11D
DKV-14D CR-14
Name Nissan

A/C
System Oil
Type R
Part number KLHOO-PAGRO
CapacitymC (Impfloz)
Total insystem 200
(7.0) 180(6.3)
Compressor (Ser-
vice parts) 200(7.0) 180
(6.3)
charging amount

REFRIGERANT
TypeCapacity kg
(Ib) HFC-134a
RHD models (Except Austra-

lia)

Australia (SR20DEengine)
Australia (GA16DE engine)
and LHD models forEurope 0.45
-0.55 (0.99 -1.21)
0.50 -0.60 (1.10 -1.32)
0.60 -0.70 (1.32 -1.54)

ENGINE IDLINGSPEED
When AICisON
Refer toEC section. Inspection
andAdjustment
COMPRESSOR
Model DKV-11D,DKV-14DandCR-14
Clutch disc-to-pulley clearance 0.3-0.6
mm (in) (0.012-0.024)

BELT TENSION
Refer toChecking DriveBelts(MAsection).
HA-84