Carrier Em1 Manual

7-1
T--311
SECTION 7
EVACUATION
7.1 INTRODUCTION
The process of evacuation is an important step in the
servicing and maintenance of any air conditioning
system. The purpose of evacuation is to remove all air
and moisture from the system in preparation for adding
refrigerant and oil during the charging process. It is
imperative that all air and moisture be removed from the
system, as their presence is detrimental and will
negatively affect performance and longevity of the
systems components. Air remaining...

7-2
T--311 g. Repeat steps d.and e. one time.
h. Evacuate unit to 500 microns. Close the electronic
vacuum gauge and vacuum pump valves. Shut off the
vacuum pump. Wait five minutes to see if vacuum
holds. This procedure checks for residual moisture
and/or leaks.
i. With a vacuum still in the unit, the refrigerant charge
may be drawn into the system from a refrigerant con-
tainer on weight scales.
7.3 INSTALLING MANIFOLD GAUGES
The manifold gauge set is used to determine system
operating pressures, add...

7-3
T--311
TXV
EVAPORATOR COIL
CONDENSER COILFILTER DRYERSIGHT GLASS SUCTION ACCESS
HPS
LPS DISCHARGE
ACCESS
COMPRESSOR
LPS (New Location GEN 5)
(GEN 4
Location)
DS
12 3
4 5 6
7
1. Vacuum Pump
2. Micron Gauge
3. Manifold Gauge Set
4. Refrigerant Cylinder5. Recovery/Recycle Machine
6. R134a High (Discharge) Side Coupler
7. R134a Low (Suction) Side Coupler
Figure 7-2 Refrigerant Service Connections (Split Systems) 

8-1T--311
SECTION 8
CHARGING PROCEDURES
8.1 INTRODUCTION
Charging is the process of calculating and then
introducing the correct amounts of refrigerant and oil
into the air conditioning system. Accurate charge levels
will result in optimum system performance and insure
the longevity of the system components.
8.1.1 Proper R134a Charge.
A system overcharged with refrigerant operates under
high head pressure which can damage components. A
system undercharged with refrigerant will result in poor
system...

8-2 T--311Table 8-2 SPLIT SYSTEM REFRIGERANT AND OIL CHARGING TABLE (GEN 5)
Evaporator
GEN 5
Condenser
All SeriesRecommended
R134a ChargeRecommended
Oil Charge*
GEN 5 - EM-1CM-2 or CM-44.75 Pounds9.5 Ounces
GEN 5 - EM-1CM-115.00 Pounds10.0 Ounces
GEN 5 - EM-1CM-35.25 Pounds10.5 Ounces
GEN 5 - EM-1CM-76.25 Pounds12.5 Ounces
GEN 5 - EM-7CM-2 or CM-44.00 Pounds8.0 Ounces
GEN 5 - EM-7CM-114.25 Pounds8.5 Ounces
GEN 5 - EM-2CM-2 or CM-44.50 Pounds9.0 Ounces
GEN 5 - EM-2CM-114.75 Pounds9.5 Ounces
GEN 5 -...

8-3T--311 Table 8-4 CARRIER TRANSPORT AIR CONDITIONING SYSTEM PERFORMANCE CHART
Determine the approximate refrigerant charge using Table 8-1 or Table 8-2 .
Follow the procedures listed below to determine if the correct charge has been obtained.
Ta b l e
ProcedureYour EntryExample
Pres-
sureRefrigerant Temp.1.Connect Manifold Gauge Set To
Air ConditioningSystemNONENONEPSIGR-12R134a
AirConditioningSystem
Certified Air Conditioning MechanicNONENONE
(A)(B)(C)
CertifiedAirConditioningMechanic
Only
958785...

9-1 T-- 311
SECTION 9
LEAK CHECKING
9.1 INTRODUCTION
The purpose of leak checking is to verify the integrity of
the hose/fitting connections and components. A
refrigerant leak check should always be performed after
installing a new system or the system has been opened
to replace or repair a component. It is imperative that the
inspection for refrigerant leaks be conducted in a
through and meticulous manner. Even the smallest leak
can result in poor system performance and premature
compressor failure....

9-2 T--311
TXV
EVAPORATOR COIL
CONDENSER COILFILTER DRYERSIGHT GLASS SUCTION ACCESS
HPS
LPS DISCHARGE
ACCESS
COMPRESSOR
LPS
(New Location GEN 5)
(GEN 4
Location)
DS
1 7
6
5
43
2
1. Vacuum Pump
2. Micron Gauge
3. Manifold Gauge Set
4. Refrigerant Cylinder5. Recovery/Recycle Machine
6. R134a High (Discharge) Side Coupler
7. R134a Low (Suction) Side Coupler
Figure 9-1 Refrigerant Service Connections (Split Systems) 

T--311
10-1
SECTION 10
WARRANTY REGISTRATION
10.1 INTRODUCTION
The warranty registration process is an important part of
the installation of any air conditioning system. In order to
experience the full benefits of Carrier Transport Air
Conditioning’s warranty, it is imperative that your
system is registered completely and accurately. Failure
to properly register the system will adversly affect the
availability of warranty coverage. A properly registered
system will enable Carrier Transport Air...

T--311
11 - 1
SECTION 11
FINAL (CHECK-OUT SHEET)
INSTALLATION CHECK-OUT
The installation checkout procedure is an important step in the installation of any air conditioning system. The reason
for the installation checkout procedure is to insure that all Carrier Transport Air Conditioning standards of installation
quality have been met. An itemized checkout form will help you in the checkout process and will provide a device for
permanently recording your findings. The form that follows this introduction...