Carrier Em1 Manual

							T -- 3 11 11 - 2
INSTALLATION CHECK-OUT, CONDENSER - Continued:
____ ____
Was mineral oilused to lubricate the fittings, hose and O Rings?
____ ____Was excess oil wiped from fittings and hose?
____ ____Are the Quick-Click fittings clamped to the Quick-Click refrigerant hose correctly?
____ ____Are the refrigeration hoses routed to the condenser(s) properly?
____ ____Are all the condenser fans blowing air in the proper direction?
____ ____ Is 12.5 Volts available at the condenser?
____ ____Are exposed terminals/connections protected with an anti-corrosive coating?
____ ____ If and when needed, is condenser(s) protected from road-sling?
____ ____
Is condenser properly grounded to the chassis?
EVAPORATOR AREA:
YES NO
____ ____
Is evaporator(s) mounted securely to the bus roof? Either through the roof using
hardware supplied by Carrier Transport Air Conditioning or by approved
OEM supplied
mounting brackets?
____ ____If evaporator is mounted with carriage bolts through the roof, are the roof rails
and bolts tight and sealed with caulking?
____ ____Are refrigeration hoses routed properly? In hose covers or in the skin of the bus.
____ ____Are all refrigerant hoses, electrical harnesses and drain lines properly supported
and protected from sharp edges?
____ ____Are two drain lines installed and running to opposite sides of the bus?
____ ____Are drain lines running downhill?
____ ____Are condensate valves (Kazoos) installed on drain line outlets?
____ ____Are the Quick=Click fittings crimped to the Quick-Click refrigerant hose correctly?
____ ____Is suction fitting and block valve (TXV) wrapped with no-drip tape to prevent
condensate drip?
____ ____Is suction hose covered with insulation to prevent condensate drip?
____ ____Are butt connections properly crimped? Are all connections tight?
____ ____Are blowers/fans running in the proper direction? Pushing air into the passenger
compartment (free blow), or pulling air into the evaporator (ducted).
____ ____Is 12.5 Volts available at the evaporator(s)? 
						

							T--311
11 - 3
INSTALLATION CHECK-OUT, EVAPORATOR - Continued
____ ____
Are evaporators properly grounded?
____ ____If ducted system, is ductwork properly mounted and trimmed?
____ ____Are all required grills/louvers installed in the ductwork?
REFRIGERATION HOSE AND ELECTRICAL HARNESS ROUTING:
YES NO
____ ____
Is wiring harnesses and refrigerant hoses protected from sharp edges, heat sources
and moving parts?
____ ____Are insulated clamps used to support the hose and harness? Tie-wraps should only
be used to bundle together wiring and hose assemblies.
____ ____Are electrical connections secure and protected from the environment?
____ ____Are controls located within easy reach of the driver?
____ ____Is there a workable service loop at all refrigerant hose connections?
____ ____ Is system free of refrigerant hose kinks and twists?
____ ____Are circuit breakers located within 24 inches of the power source?
____ ____Are relays, circuit breakers and controls located in an area with adequate
ventilation?
____ ____Is the electrical panel properly grounded?
SYSTEM OPERATION:
YES NO
____ ____
Is a Micron Gauge used during evacuation?
____ ____Was 1000 microns or less reached during evacuation?
____ ____Do evaporator blower speeds react to low, medium and high-speed settings?
____ ____Turning thermostat counterclockwise and then clockwise, does compressor turn
off and then on? If a dual system, verify thermostat and pressure switch wiring is connected
to the proper system.
____ ____Is freeze-up thermostat (located in evaporator) properly adjusted? Turn
counterclockwise to end, then clockwise 1/4 turn.
____ ____Has refrigerant and oil charge been noted on the charging label?
____ ____Is charging label attached as closely as possible to the compressor?
____ ____Is warranty card completed? Sent to Carrier? 
						

							T -- 3 11 11 - 4
INSTALLATION CHECK-OUT, - Continued
FINAL:
Record readings after system has been running for at least 10 minutes at high idle.
System Pressure(s):Rear or Passenger Side Front or Drivers Side
Suction Pressure _____ psig Suction Pressure ____ psig
Discharge Pressure _____ psig Discharge Pressure ____ psig
Temperatures:
Ambient Temperature _____F Evaporator Air Temperature In _____ F _____ F _____ F
Evaporator Air Temperature Out _____ F _____ F _____ F
Charges:
Actual values as recorded on charging sticker in engine compartment.
Rear or Passenger Side: --- Refrigerant ______Lb ______ Oz Oil ______Oz
Front or Drivers Side: ---- Refrigerant ______Lb ______ Oz Oil ______Oz
Electrical Data:
Alternator Size _____Amps Alternator current with all accessories and A/C on ____Amps
Voltage at: Compressor Clutch ______ V Evaporator ______ V Condenser ______V
Compressor Clutch ______ V Evaporator ______ V Condenser ______V
Voltage at battery with all accessories and air conditioning on _________V
Installer/Technician_______________________________________Date__________________________
OEM OR INSTALLATION CENTER ----------------------------------------------------------
----------------------------------- 
						

							T--311
11 - 5 11.1 SYSTEM REQUIREMENTS LABEL
The system requirements label must be conveniently
located within the vehicle’s engine compartment. This
label, when properly completed by the installer, will give
the servicing technician the refrigerant and oil
charge(s), evaporator(s), condenser(s), and
compressor(s) serial numbers, the drive belt(s) number,
mount kit number, the date of installation and the
installer (See Figure 11-1).
11.1.1 System Requirement Label Completion
To complete the system requirement label do the
following:
1. Lift the protective acetate cover to expose the blue
and white data tag.
2. Enter the serial numbers of the (system
components) compressor(s), evaporator(s), and
condenser(s) where designated on the tag.
3. Enter the type of refrigerant used and the amount
that was placed into each system, in pounds andounces. If this is a dual system, designate on tag which
system (#1 or #2) is front (F) or rear (R), drivers (D) or
passenger (P) side.
4. Enter (print) the type oil used and the amount, in
ounces.
5. Enter the compressor(s) drive belt(s) part number
or length.
6. Enter the mount kit (if used) part number.
7. Enter (print) your company’s name (Installer).
8. Enter the date the installation was completed.
9. Determine where the label will be placed within the
engine compartment. Wipe that area clean.
10. Remove the covering from the back of the label,
exposing the adhesive surface. Place the label in the
pre-determined location.
11. Carefully remove the protective covering from the
clear acetate. Carefully smooth the protective acetate
over the data tag label.
Figure 11-1 System Requirements Label 
						

							Index-- 1 T-- 311
INDEX
A
Aesthetics, 2-1
AUXILIARY HEATER HOSE ROUTING, 4-9
B
Barrier Type Hose & Fittings, 4-1
Belt Clearance, 6-2
Blower Wheels, 2-1
Bus Headliners, 2-1
C
Cap Plugs, 2-1
CHASSIS HOSE ROUTING, 4-6
CM-- 2 AND CM-- 3 STACKED COND., 3-12
Cm-- 5 CONDENSER, 3-5
Cm-- 7, CM-- 11 ROOFTOP CONDENSER, 3-6
Component Connections, 5-1
COMPRESSOR HOSE ROUTING, 4-8
COMPRESSOR INSTALLATION, 6-4
CONDENSER HOSE ROUTING, 4-7
CONDENSERS, 1-7, 3-2
Connection Lubrication (Mineral Oil), 4-1
CONTROLS, 5-2
COOLING CYCLE, 1-4
D
Drain Lines, 2-1
Drive Belt Tension-- Guidelines, 6-4
Dual Systems, 4-1, 5-1
E
Electrical Control Panel, 5-3
Electrical Kits, 5-1EM--17 EVAPORATOR, 2-15
EM--20, EM--21 & EM--22 EVAPORATORS, 2-15
EM--3 EVAPORATOR, 2-7
EM-- 9 DUCTED EVAPORATOR , 2-12
Evaporator Chassis Ground, 5-2
Evaporator Chassis Ground, Gen 4 , 5-1
EVAPORATOR HOSE ROUTING, 4-1, 4-5
Evaporator Tie-- In, 8-2
EVAPORATORS, 1-6
I
INSTALLATION CHECK-- OUT, 11-1
Installation Position, 6-4
INSTALLING MANIFOLD GAUGES, 7-2
Installing Manifold Guages, 7-2
INTRODUCTION, 1-1, 2-1
IW--1, IW--2, IW--7 & IW--14 EVAPS, 2-15
K
KR--4 ROOFTOP CONDENSER , 3-10
L
Leak Checking, 9-1
Liquid Charging , 8-1
M
Manual controls, 5-2
Measuring Methods for Belt Tension, 6-4
Micron (Vacuum) Gauge, 9-1
Mounting (Rooftop), 3-1
Mounting Compressors, 6-4
N
Nitrogen, 9-1 
						

							Index--2 T--311
INDEX
O
Obstructions, 3-1
Oil Charge, 6-5
Oil Charge , 8-1
OPERATING INSTRUCTIONS , 5-4
P
PAG And POE Oils , 8-1
PIPING DIAGRAMS, 4-9
PRE-- INSTALLATION, 1-7
PREVENTATIVE MAINTENANCE, 3-1
PROCEDURES, 10-1
Pulley Alignment, 6-3
Q
Quick-- Click Hose & Clamps, 4-1
R
R134a Charge, 8-1
REAR MOUNTED EVAPORATORS, 2-2
Requirements Label, 1-1
ROOFTOP CONDENSER HOSE ROUTING, 4-9
S
Serial Number Tags , 1-1
Service Loop, 4-1
SERVICE TOOLS, 7-1
SIDE MOUNTED EVAPORATOR, 2-9
Skirt Supports, 3-1
SKIRT MOUNTED CONDENSERS, 3-2
SYSTEM COMPONENTS, 1-3
SYSTEM NOMENCLATURE, 1-1
SYSTEM REQUIREMENTS LABEL, 11-5
SYSTEM WIRING , 5-1
T
TORQUE SPECIFICATIONS, 6-2
TOTAL CONTROL, 5-3
Total Control Key Pad/Display, 5-3
TROUBLESHOOTING, 2-1
V
VOLTAGES, 5-1
W
WIRING SCHEMATICS, 4-1