Carrier 90MU - Manuals

SERVICE WARNING NEVER reach into unit while fan is running. LOCK OPEN AND TAG unit disconnect before working on fan. Remove fuses and take them with you after noting this on tag . CAUTION 1. Sharp edges of coil fins are exposed. To prevent injury, cover top of evaporator with cardboard or a few laye...

Evaporator Coil - Observe fan compartment Caution note at the beginning of the Service section. Remove dirt and debris from evaporator coil as required by condition. Clean coil with a stiff brush, vacuum cleaner or compressed air. Use a fin comb of the correct tooth spacing (Refer to Tables 1A/B/C/2...

Charging the System (90MA) - These units are shipped with a full operating charge. If recharging is necessary (complete charge lost), weigh in amount of refrigerant indicated on unit nameplate and in Table 1. If unit has partial charge, it must be recharged by removing existing charge and recharging...

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations Printed in U.S.A. 90MA-3SI SUPERCEDES FORM 62-02971-00 09-2009 Pg 16 compressor equipped units and on the suction line on all other units. Oil Charge - Al...

FOR NOTES AND LEGEND, SEE FIGURE 13 FIGURE 12 WIRING SCHEMATIC - 90MA/MU*04/*06 Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations Printed in U.S.A. 90MA-3SI SUPERCEDES FORM 62-02971-00 09-2009 Pg 17

FOR NOTES AND LEGEND, SEE FIGURE 15 FIGURE 14 - ELECTRICAL SCHEMATIC - 90MA/MU*08/*12 Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations Printed in U.S.A. 90MA-3SI SUPERCEDES FORM 62-02971-00 09-2009 Pg 19