TIP-RIPPER 9W2451 - Caterpillar

Standard Chiller Operation
Description Of Engine Control Switches
Mounted on the inside of the engine control panel door is a group of switches which aid in the control of the engine. These switches should only be operated by a properly trained operator. The following is a brief description of the operation of each switch. Switches (1, 2, and 3) are a maintained-position type switch. Once a position is selected, the switch will remain there until manually changed.
Engine Control Switches
(1) Engine Control Switch. (2) Engine Maintenance Control Switch. (3) Engine Maintenance Speed Control Switch. (4) Electronic Ignition Reset Push-Button.Engine Control Switch (1)
The Engine Control switch communicates the status of the system to the Engine Status Control Module. The switch has three positions: OFF/RESET, MAINTENANCE, and AUTO. Each position is described in the following paragraphs.OFF/RESETThis position is used when a system shutdown has occurred or the system is not required to run at the present time. Placing the Engine Control switch (ECS) in this position will reset shutdown alarm conditions if all shutdown conditions have been eliminated.MAINTENANCE (MAINT)This position is used when the operator intends to run only the engine. When this position is selected the Engine Maintenance Control switch becomes "active".AUTOThis position is the "normal" position when running the engine as part of the Chiller System. The switch must be in this position for the York MicroPanel to operate the Chiller. Moving the switch from the AUTO position, during normal operation, will result in system shutdown.Engine Maintenance Control Switch (2)
The Engine Maintenance Control switch (EMCS) is a two-position (Stop or Start/Run), switch. This switch is only active when the Engine Control switch is in the "MAINT" position and initially, this switch must be in the STOP position.
Never manually engage the clutch and attempt to run the system without the York MicroPanel controls. Manually engaging the clutch can cause severe damage to the compressor and possibly result in personal injury.
STOPThis position is the same as OFF/RESET on the Engine Control switch when the Engine Maintenance Control switch is active. This switch must be in the STOP position to activate the switch and prevents unintentional engine starts when moving the ECS from AUTO to OFF/RESET.START/RUNThis position should be selected to run the engine only. The engine can be run at Idle or rated speed for engine maintenance. Selecting this position will immediately pre-lube (if equipped) and start the engine.Engine Maintenance Speed Control Switch (3)
The Engine Maintenance Speed Control switch (EMSC) is a three-position switch. The switch has a PURGE, IDLE, and RATED function. The switch is only active when the Engine Control switch is in the "MAINT" position, except for the PURGE function.PURGEThis function is used to purge the system of any fuel. This helps avoid the accidental ignition of gas left in fuel lines or exhaust system. This gas could cause an explosion during restart after a system shutdown. Anytime there is an Emergency Stop, either initiated by the York MicroPanel, Cat ECP, or the operator, the operator must purge the engine