SPIDER AS-FAN 2262261 - Caterpillar

Circuit Breaker
The circuit breaker is a safety switch that opens the battery circuit whenever the current in the electrical system exceeds the rating of the circuit breaker.
SCHEMATIC OF A CIRCUIT BREAKER
1. Reset button. 2. Disc in open position. 3. Contacts. 4. Disc. 5. Battery circuit terminals.A heat sensitive metal disc (4) with a contact point (3) completes the electric circuit through the circuit breaker. Excessive high current in the electric system promotes heat in the metal disc. Heat distorts the disc, causing the contacts to open. An open circuit breaker can be reset after it is allowed to cool. Push the reset button (1) to close the contacts.Magnetic Switch
A magnetic switch (relay) is used sometimes for the starter solenoid or glow plug circuit. Its operation electrically, is the same as the solenoid. Its function is to reduce the low current load on the start switch and control low current to the starter solenoid or high current to the glow plugs. When more than one starter is used, a separate magnetic switch is used for each starter solenoid.Pressure Switch
A pressure switch is installed in some systems to disconnect the voltage regulator and alternator from the battery when the engine is not running. This prevents damage to the alternator and regulator from the battery. It also prevents the battery from discharging through the voltage regulator and alternator.Wiring Diagrams
Many types of electrical systems are available for these engines. Some charging systems use an alternator and a regulator in the wiring circuit. Others have the regulator inside the alternator. Some starting systems have one starting motor. Engines which must operate in bad starting conditions can have two starting motors. Other starting systems use air or hydraulic motors.Glow plugs are provided for low temperature starting conditions. Systems without glow plugs are usually used where ideal starting conditions exist or where an Automatic Start-Stop system is used.A fuel pressure switch is used in all systems with an external regulator. The switch prevents current discharge (field excitation) to alternator from the battery when the engine is not in operation. In systems where the regulator is part of the alternator, the transistor circuit prevents current discharge to the alternator and the fuel pressure switch is not required.All wiring schematics are usable with 12, 24, 30 or 32 volts unless the title gives a specific description. Automatic Start-Stop systems use different wiring diagrams. Make reference to the Service Manual for the generator or to the modules for attachments for this information.The chart gives the correct wire sizes and color codes. Make reference to the description in Systems Operation for the function of each of the components. Grounded Electrical Systems
(Regulator Separate From Alternator)
CHARGING SYSTEM
1. Ammeter. 2. Regulator. 3. Battery. 4. Pressure switch. 5. Alternator.
CHARGING SYSTEM WITH GLOW PLUGS
1. Heat-Start switch. 2. Ammeter. 3. Glow plugs. 4. Regulator. 5. Battery. 6. Pressure switch. 7. Alternator.
CHARGING SYSTEM WITH ELECTRIC STARTING MOTOR
1. Start switch. 2. Ammeter. 3. Regulator. 4. Starting motor. 5. Battery. 6. Pressure switch. 7. Alternator.
CHARGING SYSTEM WITH ELECTRIC