LPG PRESSURE REDUCER MODEL AT07

ATTENTION: THE INSTALLATION AND THE

OPERATION ON PRESSURE

REDUCERS CAN BE DONE ONLY BY

SPECIALIZED PERSONNEL, AUTHORIZED TO

PERFORM THESE ACTIVITIES ON

L.P.G. EQUIPMENTS

INSTALLATION OF THE PRESSURE REDUCER

• The pressure reducer must be installed inside the engine compartment, in a position allowing the regulation and the maintenance; it shall be steadily fixed to the vehicle body in vertical position, parallel to the drive direction of the vehicle {as indicated in Fig. 1);

• The fastening of the Reducer could be both directly through the central bolt on the cover, or by means of the suitable braket supplied in the kit;

• The outlet gas connection (GAS OUT) shall be positioned upwards (Fig 2);

r~The mounting position shall be under the water level in the joling radiator;

• The Reducer shall be positioned in still air, not directly in the air flow during the drive;

• The reducer shall bo mounted at a distance of at least 150 mm from the engine exaust manifold; in case of lower distance a separation made with a 1mm metal sheet, or material of equivalent characteristics, shall be used;

• Before connecting the LPG copper pipe make it clean from any impurity, preventing these to enter the Reducer;

• Connect the LPG copper pipe to the gas inlet GAS IN (Fig. 2);

• Connect the suitable gas rubber tube to the gas outlet GAS OUT (Fig. 2);

• Connect the heating water tubes to the corresponding WATER connections; the heating water is normally derived from the vehicle heating water circuit;

• Connect the coil of the gas shut-off electromagnet (see electrical diagram of the electronic commutator);

• After switching-on the key verify that there .is no leakage from the LPG connections and pipes.

ADJUSTMENT OF THE PRESSURE REGULATOR

• The pressure Reducer is the first component to be adjusted in the LPG system. The procedure of adjustement is defined here below, both for carburetted or injected engines.

• Start the engine with gasoline fuel and warm up regularly;

• Change then to LPG fuel;

• Verify that the sensitivity adjustment screw (Fig. 3, pos.1) be completely turned clockwise;

• Adjust the engine idle level by means of the corresponding screw only (Fig. 3, pos. 2)

Vehicle with carburetted engine

• Unscrew (open) completely the maximum flow capacity adjustment element (this is normally on the gas pipe from the Pressure Reducer to the Mixer), then accelerate to about 3000 rpm;

• Screw in (close) this adjustment until a reduction of the engine speed is noted:

• Unscrew (open) again this adjustment until the previous engine speed of 3000 rpm is reached;

• Decelerate to the idle level and, if necessary, correct again by means of the idle adjusting screw (Fig. 3, pos. 2); Vehicles with injected engine and Lambda sensor

- In case of vehicle equipped with injected engine and
cathalitic converter follow the adjustment procedure defined
by the Supplier of the Lambda electronic control unit.

(final verifications: all vehicles types)

• Perform a road testing of the vehicle, verifying the correct operation of the Reducer:

• If during the test anomalies of the engine running in case of sharp brakings or turns are noticed, adjust the carbura-tion by means of the 2 adjusting screws of the Reducer, as follows:

• Screw in (close) the idle adjusting screw (Fig. 3, pos.2) to reduce the engine speed by 100/150 rpm;

• Set the optimum idle level by means of the sensitivity adju­stment screw (Fig, 3, pos.1)

MAINTENANCE

At least once in the year, or indicatively every 20.000 Km (depending from the quality of LPG used) it is suggested to drain the oil deposited inside the Reducer, by removing the screw (Fig. 3, pos. 3), closing again at the end. This opera­tion shall be done when the engine is warm. After 50.000 km or after 3 years the filter unit has to be rnan-tained with original components. The maintenance shall be more frequent if the Lpg quality is low (dirty).