CDA HCE340 Operations to be Performed When Substituting the Injectors, Lubricating the GAS Taps

GB			INJECTORS TABLE
Cat: II 2H3+	NOMINAL	REDUCED	G30/G31	G20
	POWER	POWER	28-30/37 mbar	20 mbar
BURNERS	[Hs - kW]	[Hs - kW]	Ø injector	Ø injector
			[1/100 mm]	[1/100 mm]
Semi-rapid (SR)	1,75	0,45	65	97
Rapid (R)	3,00	0,75	85	115
Triple ring (TR)	3,50	1,50	95	135

J

OPERATIONS TO BE PERFORMED WHEN SUBSTITUTING THE INJECTORS

✓Remove the gratings, the burner covers and the knobs;

✓Using a wrench substitute the nozzle injectors “J” (Fig. 7.3 - 7.4) with those most suitable for the kind of gas for which it is to be used.

The burner are conceived in such a way so as not to require the regulation of the primary air.

Fig. 7.3

REGULATING THE BURNER MINIMUM SETTING

J

Fig. 7.4

When switching from one type of gas to another, the minimum flow rate must also be correct: the flame should not go out even when passing suddenly from maximum to minimum flame.

To regulate the flame follow the instructions below:

–Light the burner

–Set the cock valve to minimum

On gas valves provided with adjustment screw in the centre of the shaft (fig. 7.5):

–Using a screwdriver with max. diameter 3 mm, turn the screw inside the tap until the correct setting is obtained.

On gas valves provided with adjustment screw on the valve body (fig. 7.6):

– Turn the screw “A” to the correct setting with a screwdriver.

For G 30/G 31 gas, tighten the adjustment screw completely.

Fig. 7.5

36

A

Fig. 7.6

LUBRICATING THE GAS TAPS

If one of the gas taps becomes difficult to turn, dismantle it, thoroughly clean with petrol and apply special high-temperatu- re grease.

These operations must be performed by a specialised engineer.