Carrier 1995 Room Air - Manual

Electronic Control
1995 Room Air Conditioner
Start-Up and Service Instructions
CONTENTS
Page
SAFETY REMINDERS 1
START-UP 1
SERVICE 1-3
General Notes 1
Compressor Replacement 3
PREVENTIVE MAINTENANCE 3
General 3
System Cleaning/Flushing 3
DISASSEMBLY INFORMATION 3 11
Filter Removal 4
Front Grille Removal 4
Chassis Removal 4
Control Box Removal 5
Electronic Control Board Removal 6
Capacitor Removal 7
Air Sweep Motor Removal 7
Air-Handling System Removal 7
Evaporator and Condenser Coils Removal
8
Exhaust Door Removal 8
Indoor Blower Wheel Adjustment
or Removal 9
Propeller Fan Adjustment or Removal 10
Fan Motor Removal 10
Compressor Removal 11
Strainer Removal and Replacement 11
SERVICE POINTS 11
TROUBLESHOOTING 12
SAFETY REMINDERS
1 Carry a fire extinguisher in your truck Keep it within
reach when using a torch Check fire extinguisher peri­
odically to be sure it is fully loaded and functional
2 Know how to handle oxyacetylene equipment safely Lock
the equipment in an upright position in the truck and at
the job site
3 Use dry nitrogen or carbon dioxide to pressurize the sys­
tem for leak checking Always use a good regulator Be
careful not to exceed 150 psig test pressure in the her­
metic compressor
4 Wear safety goggles and gloves when recovering refrig­
erant from a system
5 Attend shop safety meetings
START-UP
Refer to opeiating instructions in Owner’s Guide pro­
vided with room air conditioner
SERVICE
General Notes — These Start-Up and Seivice Instruc­
tions aie provided to assist the trained and qualified service
technician in lepairing or replacing components of Carrier
electronically conti oiled (EC) Room Air Conditionei Dis­
assembly photos are included for the unit Unit physical
data is found in Tables 1-9
IMPORTANT Repairing and servicing air condition­
ers can be hazardous for untrained individuals The
instructions printed in this publication are for prop-
eily trained and qualified Carrier seivice technicians
only
A WARNING
Before working on any air conditioner, be sure to first
disconnect all electric power to the unit to avoid the
possibility of electrical shock and personal injury
Before disconnecting, discharge capacitors by shorting
capacitors across terminals
Shield coils with cardboard to protect hands against in­
jury from sharp metal edges when removing compressor and
other components
When disassembling wiring, use numbered stickers to iden­
tify wire leads and terminals This aids in quick, accuiate
reassembly
Check clearances around scroll and housing before in­
stalling fans Before securing fan(s) fasteners, rotate fan by
hand to ensure ample clearance
Refer to Carrier Standard Service Techniques, Chap­
ters 1 and 2, for information on checking motors, removing
refrigerant, adding oil, and evacuating, dehydrating, and charg­
ing system Pay particular attention to all safety warnings
for these procedures
NOTE In Carrier Standard Service Techniques, refrigerant
removal must always include recovering the refrigerant, not
allowing it to escape to the atmosphere
Manutecturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations
Book|1 14 PC 131 Catalog No 537-323 Printed in USA Form73XC-1SS Pg 1 1-95 Replaces: New
Tab 8a 10a