Multiquip manual DCA-125SSJU Series Engine Operating Panel

DCA-125SSJU SERIES — ENGINE OPERATING PANEL

The definitions below describe the controls and functions of the DCA-125SSJU2 " Engine Operating Panel " (Figure 7) from S/N 7500508 ~.

1.Panel Light – Normally used in dark areas or at night time.When activated, panel lights will illuminate. When the generator is not in use be sure to turn the panel light switch to the OFF position.

2.Panel Light Switch – When activated will turn on control panel light.

3.Oil Pressure Gauge – During normal operation this gauge be should read between 42 to 71 psi. When starting the generator the oil pressure mar read a little bit higher, but after the engine warms up the oil pressure should return to the green zone.

4.WaterTemperature Gauge – During normal operation this gauge be should read between 165o and 203oF.

5.Charging Ammeter Gauge – Indicates the current being supplied by the engine’s alternator which provides current for generator’s control circuits and battery charging system.

6.Fuel Gauge - Indicates amount of diesel fuel available.

7.Tachometer – Indicates engine speed in RPM’s for 60 Hz operation. This meter should indicate 1800 RPM’s when the rated load is applied. In addition a built in hour meter will record the number of operational hours that the generator has been in use.

8.Engine Speed Switch - This switch controls the speed of the engine (low or high).

9.Cold Starting Button – Used to warm the engine glow plugs in cold weather conditions. Press and hold the engine cold starting button until the button illuminates.

10.Auto On/Off Engine Controller – This controller has a vertical row of status LED's (inset), that when lit, indicate that an engine malfunction (fault), has been detected. When a fault has been detected the engine controller will evaluate the fault. Any major fault will cause the controller to shutdown the generator.

During cranking cycle , The MPEC will attempt to crank the engine for 10 seconds before disengaging. If the engine does not engage (start) by the third attempt, the engine will be shutdown by the engine controller’s " Over Crank Protection" mode. If the engine engages at a speed (RPM's) that is not safe, the controller will shutdown the engine by initializing the "Over Speed Protection" mode.

Also the engine controller will shutdown the generator in the event of low oil pressure, high coolant temperature, low coolant level, and loss of magnetic pickup.These conditions can be observed by monitoring the LED status indicators on the front of the controller module.

A.Off/Manual/Auto Switch – This switch controls the running of the generator.If this switch is left in the "OFF" position, the generator will not run. When this switch is set to the manual position, the generator will start immediately.

If the generator is to be connected to a building's AC power source via a transfer switch (isolation), place the switch in the auto position. In this position the generator will monitor the AC line output from the building's power source.

B.Low Oil Pressure – Indicates the engine pressure has fallen below 15 psi. The oil pressure is detected using variable resistive values from the oil pressure sending unit. This is considered a major fault.

C.High Coolant Temperature – Indicates the engine temperature has exceeded 215° F. The engine temperature is detected using variable resistive values from the temperature sending unit. This is considered a major fault.

D.Overcrank Shutdown – Indicates the unit has attempted to start a pre- programmed number of times, and has failed to start. The number of cycles and duration are programmable. It is pre-set at 3 cycles with a 10 second duration. This is considered a major fault.

E.Overspeed Shutdown – Indicates the engine is running at an unsafe speed.This is considered a major fault.

F.Engine Running – Indicates that engine is running at a safe operating speed.

DCA-125SSJU SERIES (STANDARD)— PARTS AND OPERATION MANUAL— REV. #4 (06/03/03) — PAGE 27