Error 305 indicates either an open circuit in the power train which may not reset or the engine failed to deliver a certain level of current 0.1A within 60 seconds when the engine
was connected to the grid. Check the wiring harness and connections to the main PCB, if the problem persists contact the technical help line.
Section M
Error 308 indicates an open circuit condition in the power train when the engine connects to the grid in the stop resistor circuit. Check the stop/start resistor values for 15
Ohms. If open circuit replace, if OK and the fault persists, the engine may need to be replaced contact the technical helpline for advice.
Section N
Error 287 and 300 implies that the Main PCB did not disconnect as the engine head was cooling down. If the problem persists the Main PCB will need replacing.
Section O
Error 288 check loop in milligrid connection across pins 3 (see
).
Errors 289 to 296 fault connected with the water cooled thermostat/connections and another. Check the milligrid plug is pushed home properly and the 6 way
(E) Perform a service reset if the error persists. Check the continuity of the water cooled thermostat circuit through the 6 way Molex
connector. Once the water cooled thermostat error has been resolved a further error code may be displayed.
page 85
18.0 Engine Fault Finding
NOTE: Section 18 Engine Fault Finding should only be carried out by Service Engineers who have been given specific training.
Safety Precautions
1. The MEC V1 Linear Free Piston Stirling Engine Generator (LFPSE) is intended solely for use with purpose designed micro CHP appliances using the MEC approved
control Boards (such as RVC32.410 range from Siemens Switzerland Ltd) and Grid Interface Controller (such as the Siemens AVS76 G83/ENS control board). MEC
accepts no responsibility for operation with an unapproved control system.
2. WARNING: Do not handle electrical connections during operation, whilst hot or during cool down.
3. WARNING: The LFPSE remains dangerously hot after the burner is turned off and may continue to generate electricity until it cools. Wait one hour after turning the engine
burner off or ensure the head temperature is below 50°C before touching any part of the engine. Care MUST be taken as parts will still be hot long after the burner is
extinguished.
4. WARNING: the lower dome (back end) of the engine can reach 105°C.
5. WARNING: Do not disconnect electrical connections between the LFPSE and the controls until the heater head thermocouple on the engine reads less than 50 °C. Before
performing maintenance on the appliance, wait a minimum of one hour following shut down of the engine burner to allow the LFPSE to cool sufficiently. If the LFPSE is
hot, it has the potential to run and generate electricity, resulting in a possible electric shock hazard.
6. WARNING: The LFPSE Contains Magnets and emits 6 mT magnetic field strength and should not be handled by people with medical implants such as Pacemakers.
7. There are NO user serviceable parts inside the engine.
8. The LFPSE weighs approximately 48 kg. Follow proper lifting and handling procedures. It MUST only be lifted using the bottom absorber bracket or support feet. It should
only be stored on the bottom absorber bracket or support feet. Under no circumstances should it be handled by the shroud or the burner seal plate. Mechanical lifting aids
should be used.
9. Do not drop the LFPSE.
10. Always maintain LFPSE at or below stated design specifications (section 4).
11. Never strike, weld or drill the vessel, or any component part of the LFPSE.
12. Never attempt to open the vessel. The vessel contains helium gas at high pressure.
Capacitor and Control PCB are fundamental part of Microgen Engine system.
13. Protect wires and wire routing against fatigue caused by vibration of the LFPSE. Engine power wire failure can result in the LFPSE pistons overstroking. The alternator
power wires and capacitor must be connected using 'locking Faston' connectors to prevent inadvertent disconnection of these critical connections.
14. You Must only operate the LFPSE with a MEC approved 44 microfarad 660 V motor run
page 86
Section P
Summary of Contents for ECOGEN 24/1.0
Page 69: ...Fig 77 Fig 78 Fig 79 page 69 16 0 Schematic Wiring 16 1 Burner Control Units BCU Connections...
Page 70: ...page 70 16 2 Milligrid 24 way Connector...
Page 71: ...page 71 16 3 14 way Connector...
Page 72: ...page 72 16 4 Engine Circuit...
Page 73: ...page 73 16 5 Power Monitoring 24Vdc Power Supply...
Page 74: ...page 74 16 6 External Connections External Wiring...
Page 85: ...page 87...
Page 86: ...page 88...
Page 87: ...page 89 Section P...
Page 88: ...page 90...
Page 89: ...page 91 Section Q Engine developing less than 950W after 15 minutes running at maximum rate...
Page 91: ...page 93 page 94 page 95 page 96 MICRO CHP SYSTEM COMMISSIONING CHECKLIST...
Page 92: ...page 97...
