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| Illustration 1 | g00696361 |
(1) Pump stop switch (not used on 3500 generator sets or EUI engines). (2) SAS: Starting Aid Switch (optional). (3) Pump run switch (not used on 3500 generator sets or EUI engines). (4) VAR: votage adjust rheostat. (5) PLS: panel light switch. (6) SP: speed potentiometer (optional) or GS: governor switch (optional). (7) ESPB: emergency stop push button. (8) ECS: engine control switch. | |
The Engine Control Switch (ECS) (8) determines the status of the control panel. In the AUTO position, the GSC allows the operator to remotely control the generator set with a Customer Communication Module (CCM). Also, the GSC allows the operator to remotely monitor the generator set with a CCM. See Systems Operation, "Customer Communication Module". The GSC allows the engine to start whenever the remote start/stop initiate contact (IC) is closed. After the remote start/stop initiate contact (IC) opens, the engine will shut down. A cooldown time delay is programmable from 0 to 30 minutes before the engine shuts down. The setpoint is P019. The cooldown time delay has a factory setting of five minutes. The engine starts and the engine runs while the ECS is in the MANUAL START (6 o'clock) position. In the COOLDOWN/STOP (9 o'clock) position, the fuel control solenoid shuts the engine down after cooldown. In the OFF/RESET position (12 o'clock), the engine shuts down immediately. The fault indicators are reset. The emergency stop light is not reset while the ESPB is depressed.
If the red emergency stop push button (ESPB) (7) is pressed, the fuel is shut off. The operator must turn the ESPB (7) clockwise until the ESPB releases in order to restart the engine. Next turn the ECS to OFF/RESET and then turn the ECS to the MANUAL START.
The Voltage adjust rheostat (VAR) (4) connects to the voltage regulator and the VAR is used to adjust generator voltage to the desired level. The VAR is used in place of the voltage level rheostat that is located on the generator regulator assembly.
The optional speed adjust potentiometer (SP) (6) is used to raise the engine speed. Also, the optional speed adjust potentiometer (SP) is used to lower the engine speed when the generator is using an electronic governor. An optional governor is mounted in this location, if a governor that is equipped with a speed adjust motor is used.
The panel light switch (PLS) (5) turns ON the panel lamps and turns OFF the panel lamps.
The optional pump run switch (3) is used in conjunction with the automatic fuel transfer system if the generator set is equipped. The pump run switch is not used with the 3500 generator sets or EUI generator sets.. The AC fuel transfer pump will fill the day tank of the generator set when the operator pushes the pump run switch. The pump will automatically shut off when the fuel level contactor reaches the high fuel level. Also, the pump can be shut off manually by pressing the "Pump Stop" switch.
The optional "Pump Stop" switch (1) is used in conjunction with the automatic fuel transfer system (if equipped). The "Pump Stop" switch is not used with the 3500 generator sets or the EUI generator sets. The "Pump Stop" switch is used to manually stop the AC fuel transfer pump. The operator can reset the "Pump Stop" switch by depressing the "Pump Stop" switch again.
The optional "Starting Aid" Switch (SAS) (2) is present only on required generator sets. On non-EUI engines, the starting aid system is a manual shot type of system and the starting aid system is a metered shot type of system. When the SAS (2) is placed in the ON position and the SAS is held in the ON position, the metered shot starting aid system is activated. A specific amount of ether is metered into a holding chamber. When SAS (2) is released, a solenoid allows ether to flow to the engine. The metered shot starting aid system deactivates when the following conditions are present.
- The contacts of the run relay (RR) open.
- The engine coolant temperature is sufficient to open the start aid temperature switch (SATS).
- The SAS (2) is released to the OFF position.
| NOTICE |
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Crank the engine before you activate (keep SAS in OFF position) the metered shot start aid system. Damage to the engine is possible by activating the system when the engine is not turning. |
On EUI engines, the Starting Aid switch (2) allows the engine ECM to control the ether injection system that improves the cold starting performance of a 3500B engine. The auto position is the normal position of the switch. The system is always in auto mode unless the switch is held in manual. Two operation modes of the ether injection system exist:
Manual - The manual position is momentary and the SAS (4) must be held in this position to allow the ether system to operate in manual mode. Manual mode allows ether to be injected for a maximum of 130 seconds whenever the engine coolant temperature is less than 30 °C (86 °F) and engine speed is greater than 50 rpm.
Automatic - This is the normal position of the SAS (4). The ether system is in automatic mode without operator input whenever the engine is started. In automatic mode ether will be injected for a minimum of 15 seconds whenever the engine coolant temperature is less than 30 °C (86 °F) and a maximum of 130 seconds at -50 °C (-58 °F). The automatic ether injection system is disabled whenever engine rpm exceeds 400 rpm or the engine coolant temperature exceeds 30 °C (86 °F).