Table of Contents
Advertisement
4.0 MANUAL RESET
To reset the solenoid valve:
• Make sure the power supply is connected;
• Close the flow downstream of the solenoid valve in order to balance the pressure between upstream and downstream when
opening.
• DN 65 - DN 80 - DN 100 - DN 125 - DN 150 without CPI (see fig. 1):
• Loosen completely and remove the protective cover (13);
• Loosen the reset pin (14) from the fastening screw (15);
• Insert the non-threaded part of the reset pin (14) in the hole provided on the hex knob (1);
• Using the pin (14):
• Turn the reset knob (1) slightly clockwise and wait a few seconds for the pressure upstream and downstream of
the valve to stabilise;
• After balancing the pressure, turn the reset knob (1) clockwise to its stroke end, when it is coupled;
• Remove the pin (14) from the knob (1) and screw it on in its original position. Alternatively to the reset pin (14), it is
possible to use a size 32 commercial spanner to turn the reset knob (1);
• Screw the protective cover (13) back on in its original place. Or seal it in that position.
• DN 200 - DN 250 - DN 300 without CPI (see fig. 2):
• Loosen completely and remove the protective cover (13);
• Using a size 32 commercial spanner:
• Turn the reset knob (1) slightly clockwise and wait a few seconds for the pressure upstream and downstream of
the valve to stabilise;
• After balancing the pressure, turn the reset knob (1) clockwise to its stroke end, when it is coupled;
• Remove the commercial spanner from the knob (1), then tighten the protective cover (13) back into its original position.
Or seal it in that position.
• DN 65 - DN 80 - DN 100 - DN 125 - DN 150 - DN 200 - DN 250 - DN 300 with CPI (see fig. 3 and 4):
• Loosen the fastening screw (23) and remove the protective cover (13);
• Using a size 32 commercial spanner:
• Turn the reset knob (1) slightly clockwise and wait a few seconds for the pressure upstream and downstream of
the valve to stabilise;
• After balancing the pressure, turn the reset knob (1) clockwise to its stroke end, when it is coupled;
• Remove the commercial spanner from the knob (1);
• Screw the protective cover (13) back on in its original place and secure it with the screw (23). Or seal the cover in that position.
IMPORTANT NOTE:
• Hold the pin or size 32 commercial spanner tightly during resetting operations;
• After completing the operation, ALWAYS remember to remove the tool used for resetting in order to avoid the valve from
possibly suddenly closing, which could harm people or damage property if the tool accidentally remains inserted in the knob (1).
5.0 FIRST START UP
• Before start-up make sure that all of the instructions on the rating plate, including the direction of flow, are observed;
• After gradually pressurising the system, reset the solenoid valve, as indicated in 4.0;
• Check the tightness, the operation and the closing of the solenoid valve, electrically disconnecting the connector
ONLY IF connected to the coil. IMPORTANT NOTE: Do not use the connector as a switch to close the
solenoid valve.
5.1 - RECOMMENDED PERIODIC CHECKS
• use a suitable calibration tool to ensure the bolts are tightened as indicated in 3.2;
• check tightness of the flanged/threaded connections on the system;
• check tightness and operation of the solenoid valve;
It is the responsibility of the final user or installer to define the frequency of these checks based on the severity of the service conditions.
15
Advertisement
Table of Contents
