LANDI RENZO TN SIC Guía Instalación Y Regulación página 10

Sensitivity setting
In order to set sensitivity as required do as follows:
1) Remove the tube which conveys gas from the gas
outlet connector to the mixer (A);
2) Tighten the sensitivity screw (C);
3) Disconnect the wire which reaches the plus
contact of the idle speed solenoid valve (D) and
connect it to a + 30 (battery plus) so that the
regulator becomes loaded with gas;
4) Form a bubble with soap water on the gas outlet
connector (A) and loosen the screw (C) until the gas
starts coming out of the regulator and inflates the
bubble;
5) From the time gas starts coming out of the
regulator, tighten screw (C) again until no more
gas leaks. From the moment that no more gas leaks,
tighten the screw another half turn to be sure that it
closes perfectly;
6) Place the cap on the sensitivity screw (C) in order
to avoid accidental or intentional changes in its
setting.
Another less sensitive but more rapid system for
sensitivity adjustments is as follows:
1) Fully tighten the sensitivity screw (C);
2) Turn the engine on and set idle speed by means
of screw (E) until the maximum CO
3) Slowly loosen the screw (C) until a marked
change (reduction) in the CO
4) From the time that this CO
tighten the screw (C) until the CO
as in item 2.
5) Place the cap on the sensitivity screw (C) in order
to avoid accidental or intentional changes in its
setting.
6) Check that no acceleration gaps are observed
while slowly accelerating.
After the first 500 / 1.000 Km check regulator
sensitivity.
'TN SIC' CNG REGULATORS INSTALLATION AND ADJUSTMENT MANUAL
level is attained;
2
level is reached;
2
change is observed,
2
value is the same
2
LANDI RENZO S.p.A.
10 / 20
Maintenance
7. MAINTENANCE WORK ON THE SYSTEM
To get the best out of natural gas fuel, the engine
must be tuned and regularly serviced, both as
regards the mechanical and the electrical parts. In
addition to the routine maintenance required by the
vehicle manufacturer, it is recommended:
• every 15,000 km check/replace the air filter,
change the spark plugs, check the exhaust gas with
an analyser, check the efficiency of the electrical
system (check there is no oxide formation in the
connections);
• every 30,000 km check the valve clearance, check
lambda probe efficiency (for cars with a catalytic
converter); with the bleed plug, check there is no oil
or other residues inside the regulator;
• every 100,000 km, if malfunctioning occurs, carry
out a general overhaul of the system using our
product overhaul kits, which are support of
instructions showing the methods to follow.
Using spark plugs with a colder heat rating, it is wise
to check that the distance of the electrodes is never
greater than 1 mm.
It is advised to increase the valve clearance by 0.05
mm with respect to the specifications for petrol
operation provided by the vehicle manufacturer.
Having installed the natural gas conversion system,
it is natural to travel as many kilometres as possible
with this fuel: however, so as not to prejudice the
correct operation of the original petrol system and
fuel pump, it is advised to travel 2 - 3 km on petrol at
least every 200 - 300 km (example at each CNG
refuelling)
Date, descriptions and illustrations are indicatory.
LANDI RENZO S.p.A. reserves the right to improve
or modify them without prior notification.