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Electrical Maintenance
123
Condenser Fan and Evaporator
Fan Rotation
NOTE: If both the condenser fan and
evaporator fans are rotating backwards,
diagnose the automatic phase selection system.
Check Condenser Fan Rotation
Check for proper condenser fan rotation by
placing a small cloth or sheet of paper against the
condenser fan grille on the front of the unit.
Proper rotation will blow the cloth or paper away
from the grille. Improper rotation will hold the
cloth or paper against the grille.
If the condenser fan is rotating backwards, see the
unit wiring diagram to correct fan motor wiring at
the fan motor junction box or condenser fan
contactor. To correct improper fan rotation,
reverse any two fan power cord leads at the
condenser fan contactor (disconnect power supply
before reversing leads). Do not move the CH
ground wire.
Check Evaporator Fan Rotation
Visually inspect the evaporator fan blades for
proper rotation. Arrows located on the underside
of the fan deck indicate the correct direction of
rotation.
Check both high and low speed evaporator fan
rotation by performing Evaporator High and
Evaporator Low tests from the Manual Function
Test menu.
If an evaporator fans rotate backwards on one or
both speeds, see the unit wiring diagram to correct
motor wiring at the fan motor junction box or
evaporator fan contactor (disconnect power
supply before reversing leads). (Do not move the
ground wire which is labeled CH.)
NOTE: Evaporator fan motor wires EF1, EF2
and EF3 are used on low speed fan operation.
Wires EF11, EF12 and EF13 are used on high
speed fan operation.
Содержание 098916
Страница 2: ...MAGNUM TK 51122 4 MM Rev 6 02 06 Copyright 2004 Thermo King Corp Minneapolis MN USA Printed in USA...
Страница 5: ......
Страница 11: ...Table of Contents 10...
Страница 19: ...Service Guide 18...
Страница 28: ...Specifications 27 Figure 2 Physical Specifications AMA313...
Страница 41: ...Unit Description Features Options 40...
Страница 105: ...Operating Instructions 104...
Страница 155: ...Servicing The Unit 154...
Страница 187: ...Index 186...
Страница 189: ...Wiring and Schematic Diagrams Index 188...
Страница 190: ...189 Wiring Schematic...
Страница 191: ...190 Wiring Diagram Page 1 of 2...
Страница 192: ...191 Wiring Diagram Page 2 of 2...