Carrier 73TCA005101B Start-Up And Service Instructions

Start-Up and Service Instructions
CONTENTS
SAFETY REMINDERS . . . . . . . . . . . . . . . . . . . . . . . . . 1
START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1,2
General Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Compressor Replacement . . . . . . . . . . . . . . . . . . . . . 2
PREVENTIVE MAINTENANCE . . . . . . . . . . . . . . . . 2-4
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
System Cleaning/Flushing . . . . . . . . . . . . . . . . . . . . 3
DISASSEMBLY INFORMATION . . . . . . . . . . . . . . . 5-8
Filter Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Front Grille Removal . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Discharge Air Deck Removal . . . . . . . . . . . . . . . . . . 5
Accessing Control Box Components . . . . . . . . . . 5
Capacitor Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Thermostat Removal . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Thermostat Bulb Heater Removal
(008P Unit Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Mode Selector Switch Removal . . . . . . . . . . . . . . . . 6
Fan Cycle Switch (Energy Saver Switch)
Removal (008P Unit Only) . . . . . . . . . . . . . . . . . . . 6
Wing Panel(s) Removal . . . . . . . . . . . . . . . . . . . . . . . 6
Accessing Compressor, Fan Motor, Outdoor
Coil Sections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Exhaust Feature (008P Unit Only) . . . . . . . . . . . . . . 7
Fan Motor Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
• OUTDOOR FAN
• INDOOR BLOWER WHEEL
SERVICE POINTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . 10

SAFETY REMINDERS

1. Carry a fire extinguisher in your truck. Keep it within reach
when using a torch. Check fire extinguisher periodically
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.
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book 1 4 PC 131
Tab 8a 10a
1993-1995 Room Air Conditioners
Page
Catalog No. 537-327 Printed in U.S.A.

START-UP

Refer to operating instructions in Owner's Guide pro-
vided with room air conditioner. Refer to Table 1 for specific
model number information to properly service, maintain, and
disassemble the unit.

SERVICE

General Notes -

These Start-Up and Service Instruc-
tions are provided to assist the trained and qualified service
technician in repairing or replacing components of Carrier
room air conditioner model offerings for 1993-1995. Room
air-conditioning models are cooling-only units. These in-
structions contain disassembly photos for Model 73TC
(Siesta I and Siesta II). A typical 73TC unit is shown in
Fig. 1. Unit physical data is found in Tables 2-8.
Fig. 1 - Model 008P
IMPORTANT: Repairing and servicing air condition-
ers can be hazardous for untrained individuals. The in-
structions printed in this publication are for properly
trained and qualified Carrier service technicians only.
Before working on any air conditioner, be sure to first
disconnect all electric power to the unit to avoid the pos-
sibility of electrical shock and personal injury.
Before disconnecting, discharge capacitors by shorting ca-
pacitors 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, accurate
reassembly.
Form 73TC-1SS Pg 1
73TC
1-96 Replaces: New