User’s Guide | TOTEM 10 - TOTEM 20
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13. Engine air filter
14. Safety frame structure temperature sensor
15. Exhaust silencer
16. Exhaust manifold
17. Oil filter
18. Fumes to water tube bundle heat exchanger
19. Water to oil plate heat exchanger
20. Marelli three-way catalyst
21. Water to fumes coaxial heat exchanger
22. Fresh oil tank
23. Marelli ECU
24. Engine air suction snorkel
E.
Safety Instructions
The TOTEM is equipped with EN ISO 13849 compliant safety systems so as to
protect machine operators and maintenance staff against hazards linked to the
micro-cogenerator operation.
Risk analysis has identified the following hazards:
Exhaust gas emissions
Lack of water flow
Spark advanced with temperature increase
Methane gas leak
The system is composed of a chain of safety sensors: an electromechanical
thermostat, a methane gas sensor, and an emergency pushbutton.
Methane gas leakage hazard
The TOTEM is fitted with a catalythic methane gas sensor for gas leaks. The sensor
features a two-threshold calibration that trigger safety system activation when gas
leaks are detected inside the unit’s enclosure. The first threshold value is set to 20%
of LEL. Values exceeding threshold are sent to the ARYA PLC that will command the
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