Boss 35501205, Руководство пользователя

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10
EN
4.2 - ADJUSTING THE OUTLET PRESSURE
Before starting the system, make sure that the spring supplied with the regulator is suitable for the desired adjustment
pressure. The outlet pressure P2 (unless specifically requested) is factory set with the top cover ( 3 ) positioned as shown in
3.2
a
and with the adjustment screw (
2
) set approximately at the minimum calibration value.
If the regulator is installed in different positions, check and reset the outlet pressure P2.
Adjust the outlet pressure as follows:
• Unscrew the cap (
1 );
• Unscrew the adjustment screw ( 2 ) and set it to the minimum calibration allowed (threaded end of the top cover ( 3 ));
• Start the system or make sure there is a minimum flow downstream of the regulator;
• To increase the pressure calibration downstream of the regulator, tighten the adjustment screw (
2 ) to the desired value. Perform
the reading with a calibrated pressure gauge, installed downstream of the regulator to at least 5 DN (see example in 3.4);
• Screw the cap ( 1 ) back on and if necessary, seal it in that position using the appropriate seal holes (if present);
• Use pressure outlets ( 6 ) on the device only for zero flow or very low flow measurements.
4.3 - REPLACING THE SPRING
The step must be carried out without gas inside the regulator.
Replace the spring as follows:
• Unscrew and remove the cap (
1 ) from the top cover ( 3 );
• Completely loosen and take out the adjustment screw ( 2 );
• Remove the spring (
14
) from the top cover (
3
) and replace it with the new spring;
• Tighten the adjustment screw ( 2 ) and after starting the system as shown in 4.0, set the outlet pressure to the desired value
as shown in 4.2;
• Screw the cap ( 1 ) back on and if necessary, seal it in that position using the appropriate seal holes (if present);