Stephill Generators SSDP30-70 - DSE 6110 Fault Finding Guide
Issue 3
No Frequency
If no frequency can be seen on the DSE 6110 display then follow the checks listed above on
Gen Under Voltage
.
Low Frequency
a) Check the 6-way diverter valve is in the correct position for the application - local or remote fuel tank.
b) Check the condition of the fuel system -
Fuel Hoses - are the fuel hoses in good condition - also check when generator is running.
Hose Clips - are not loose from any previous services or are broken/damaged.
Leaks - check for any fuel leaks.
External Fuel Tank - check all external connections and fuel hoses for leaks and/or damage.
d) Check the condition of the fuel. Try a new fuel source if possible.
c) Is the engine due a service - replace the fuel filters and change/replace the water trap filter. It maybe also
worth checking the air filter(s) are in good condition - replace is necessary.
If the above fails to raise or rectify the issue it may be worth checking the engine for possible malfunctions or faults - e.g.
injectors, fuel injector pump etc. Refer to engine handbook or engine specialist.
The frequency, in most cases, is dependant directly by the rotational speed of the engine. The slower the engine runs, the
lower the frequency.
The
Gen Under Frequency
shutdown will occur if the engine speed has slowed below a pre-set level. On most cases
frequency shutdown will occur for a low frequency.
DO NOT ADJUST THE ENGINE SPEED
The most common issues with a
Gen Under Frequency
shutdown are associated with a low frequency measured on the DSE
6110. This is usually associated with the fuel system. In order to have the engine run efficiently and at the correct speed the
fuel system needs to operating at its full potential. Below are some checks on the fuel system.
JD/03/20
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