Ampcontrol Pty Ltd
– ABN 28 000 915 542
DIESELGUARD USER MANUAL
MAG-179 Version 3
– APR/16
Uncontrolled Copy - Refer to Ampcontrol Website for Latest Version
Page 22 of 27
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6.5 Cold Start Function
In regular use the Diesel Machine Monitor’s battery will keep the system ready for operation. After
periods of non-use, the battery drain in standby mode may mean that eventually the unit will not have
sufficient power to start the system. Typically the Diesel Machine Monitor can be left for 10 to 11 days
before a bypass or “cold start” is required.
A lockable Pneumatic Bypass Valve can be installed in parallel to the I.S. Solenoid Valve that can be
used to override the Dieselguard system. When the bypass valve is used the vehicle can be started
without the use of the detection system.
Depending on the valve configuration, as soon as the vehicle has started in the bypass mode the
Dieselguard system can be energised and when a stable indication is shown the bypass valve can be
opened again. The alternator charges the
Diesel Machine Monitor’s internal battery and within 20 - 30
minutes the unit should have enough charge for the normal start sequence to be possible.
If the vehicle is started and the valves are reset and then the engine is not run for sufficient time the
battery may not pass its minimum voltage requirement to operate the system. The Diesel Machine
Monitor has a battery saver cut off voltage and the monitor will not operate from the battery until the
minimum charge has brought the battery voltage above that level.
In this case the Diesel Machine Monitor may not complete its 2 minute run and may shut down shortly
after the machine engine is stopped. It would be necessary to re-start the machine in bypass mode and
run it for a longer period.
Consideration should be given to the storage of the unit. If the unit remains in storage for a length of time
prior to installation, a re-charge will be required before it can be used. The unit can be charged directly
by connecting a 12-30V supply to the Type 2S power lead. It is therefore recommended that the unit is
re-charged on a supply prior to installation. The required re-charge time is around 12 hours from a
completely discharged battery.
6.6 Charge Indication
The IDA display will flash red every 4 seconds (0.25Hz rate) whilst ever the Dieselguard battery is
charging.