50TCA04---A07 Nominal 3 to 6 Tons
With Puron→ (R410A) Refrigerant
Service and Maintenance Instructions
TABLE OF CONTENTS
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . 1 UNIT ARRANGEMENT AND ACCESS . . . . . . . . . . . 2 SUPPLY FAN (BLOWER) SECTION . . . . . . . . . . . . . . 3 COOLING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 PURONR
APPENDIX I. MODEL NUMBER SIGNIFICANCE . 52 APPENDIX II. PHYSICAL DATA . . . . . . . . . . . . . . . . 53 APPENDIX III. FAN PERFORMANCE . . . . . . . . . . . 54 APPENDIX IV. ELECTRICAL DATA . . . . . . . . . . . . . 63 APPENDIX V. WIRING DIAGRAM LIST . . . . . . . . . 69
APPENDIX VI. MOTORMASTER SENSOR LOCATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
UNIT
SAFETY CONSIDERATIONS
Installation and servicing of
When working on
Follow all safety codes. Wear safety glasses and work gloves. Use quenching cloth for brazing operations. Have fire extinguisher available. Read these instructions thoroughly and follow all warnings or cautions attached to the unit. Consult local building codes and National Electrical Code (NEC) for special requirements.
Recognize safety information. This is the
symbol . When you see this symbol on the unit and in instructions or manuals, be alert to the potential for personal injury.
Understand the signal words DANGER, WARNING, and CAUTION. These words are used with the
!WARNING
ELECTRICAL OPERATION HAZARD
Failure to follow this warning could result in personal injury or death.
Before performing service or maintenance operations on unit, turn off main power switch to unit. Electrical shock and rotating equipment could cause injury.