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Electrical Maintenance
46
Battery
Inspect/clean the battery terminals and check the
electrolyte level during scheduled maintenance
inspections. A dead or low battery can be the
cause of an ammeter indicating discharge due to
lack of initial excitation of the alternator even
after the unit has been boosted for starting. The
minimum specific gravity should be 1.235. Add
distilled water as necessary to maintain the proper
water level.
Fuses
A number of fuses, located on the relay board,
protect various circuits and components. The
relay board is located inside the control box.
•
A 15 amp fuse (F3—Zone 1 Damper) protects
the 29A circuit, which supplies power to the
damper solenoid.
•
A 15 amp fuse (F4—High Speed Solenoid)
protects the 7D circuit, which supplies power
to the high speed solenoid.
•
A 15 amp fuse (Fuse F6—Zone 1 [Host]
Solenoids) protects the 7K1 circuit, which
supplies power to solenoids and components
in the host unit.
•
A 25 amp fuse (Fuse F12—Zone 3 Fan
Motors) protects the FMR3 circuit, which
supplies power to the Zone 3 evaporator fan
motors and relays.
•
A 15 amp fuse (Fuse F13—Zone 3 Solenoids)
protects the 8-3 circuit, which supplies power
to solenoids and components in the Zone 3
evaporator.
•
A 25 amp fuse (Fuse F15—Zone 2 Fan
Motors) protects the FMR2 circuit, which
supplies power to the Zone 2 evaporator fan
motors and relays.
•
A 15 amp fuse (Fuse F16—Zone 2 Solenoids)
protects the 8-2 circuit, which supplies power
to solenoids and components in the Zone 2
evaporator.
•
A 40 amp fuse (F20—Control Circuit Power)
protects the 2AA circuit, which is the main
power circuit.
•
A 15 amp fuse (Fuse F22—Host Unit
Controls) protects the 8F circuit, which
supplies power to various control relays and
components.
•
A 40 amp fuse (Fuse F23—Starter Circuit)
protects the 2S circuit, which supplies power
to the starter relay (K5) and the starter
solenoid.
•
A number of 2 and 5 amp fuses protect
microprocessor circuits, control relay circuits,
and various components.
1.
Relay Board
Figure 18: Control Box
AGA220
1
Summary of Contents for Spectrum DE 30-2
Page 4: ...4...
Page 12: ...Safety Precautions 12...
Page 16: ...Specifications 16...
Page 31: ...Unit Description 31 1 Access Panels 2 Defrost Dampers Figure 12 Back View of Unit 1 2 AGA215...
Page 42: ...Operating Instructions 42...
Page 48: ...Electrical Maintenance 48...
Page 106: ...Structural Maintenance 106...
Page 110: ...Mechanical Diagnosis 110...
Page 114: ...Remote Evaporator Specifications 114...
Page 116: ...Remote Evaporator Maintenance Inspection Schedule 116...
Page 122: ...Remote Evaporator Electrical Maintenance 122...
Page 126: ...Remote Evaporator Refrigeration Service Operations 126...
Page 128: ...Remote Evaporator Structural Maintenance 128...
Page 130: ...Remote Evaporator System Diagnosis 130...
Page 134: ...Wiring and Schematic Diagrams Index 134...
Page 135: ...135 Schematic Diagram Page 1 of 2...
Page 136: ...136 Schematic Diagram Page 2 of 2...
Page 137: ...137 Wiring Diagram Page 1 of 4...
Page 138: ...138 Wiring Diagram Page 2 of 4...
Page 139: ...139 Wiring Diagram Page 3 of 4...
Page 140: ...140 Wiring Diagram Page 4 of 4...