179
Service Manual – SW5500, FLOORTEC R 985
29 - Engine System, LPG
CO Regulation (continues)
2
Screw the flow regulator fully in (regulator closed) and then unscrew it as follow:
◦
3 turns in case of new device setting (D)
◦
4 turns in case of old device setting (E)
Figure 14:
D
E
3 Start the engine and in case of bad carburetion or ignition failure operate on the setting screw so to
ensure the proper running, by turning it clock or counterclokwise
4
Warm up the engine for about 15 min. until the stabilization of gas temperature (a variation of ±30°C is
allowed)
5
Proceed with the exhaust gasses calibration by operating on the flow regulator’s setting screw so to
reach a CO% value of 3,5±0,1% without exceeding the temperature of 1211/1220°F (655/660°C) of the
exhaust gas
WARNING: (for Advance version only) The excessive overtaking [> of 212/248°F (100/120°C)] of
the temperatures indicated in point 5, for a prolonged period of time (> of 10/15 sec.), it
can cause of the irreversible damage to the catalytic muffler.
In case of the CO% setting corresponds to overheating of the engine proceed as follows:
– 5 1 Stop the engine, disconnect the vacuum hose from the carburettor and connect a syringe (or other
device to create a controlled vacuum)
–
5.2 Disconnect the gas line from the flow regulator and connect a digital instrument for measuring
pressure/vacuum (vacuum gauge)
