Subject: Manual Crank Operation for Tornatech GPD Diesel Engines Controllers
Clarke Service bulletin – CSB004 dated March 21, 2011 - Engine Failure Due to Lack of Cooling Loop Water Flow
In regards to above mentioned Clarke service Bulletin, Tornatech would like to bring forward the following points;
- The activation of the cooling water loop solenoid valve is not part of the engine controller manufacturer’s scope of work. Usually, the cooling water loop solenoid is wired in parallel with the fuel solenoid valve (terminal 1) on the engine. This can vary from one manufacturer to the other.
- The Tornatech Diesel Engine Controllers Model GPD doesn’t allow manual cranking by either or both of the manual crank push buttons if the main selector switch is in the “Auto” position. The manual crank push buttons are only operational when the main selector switch is in the “Hand” position.
- We recommend that the user formerly demand that the NFPA 20 committee introduce a modification to the standard that would require the addition of a flow sensing device in the cooling loop circuit. This device would trigger an alarm signal on the Diesel Engine Controller when no flow is detected during an engine run condition.
*Note: This message was modified on June 21, 2011