I N S T R U C T I O N S
For the installation and maintenance variable area MDM
spring-assisted d e s u p e r h e a t e r s
IMI0046E.doc
Rev.0 14/03/13
20090 SEGRATE (MI)- via E.Fermi
EMAIL:
TEL.(02) 269912.1 - FAX.(02) 2692.2452
Page 8 of 11
FIG.1 – SCHEMATIC PLANT
7.1
START-UP
Make certain that all the components are installed correctly. Calibrate the temperature control
unit/transmitter in such a way that it responds automatically to temperature variations.
Heat the main vapour line and open the valve of the water supply line. Check the water pressure in the
desuperheater and the operation of the transmitter and temperature control unit by manually increasing
and reducing the output signal and observing the temperatures shown and recorded. Once there is
satisfactory correspondence between the signals sent by the instruments and the actual temperature, it is
possible to set the regulation point and activate the system in automatic mode.
You are advised to record the various coordinates of the vapour over a sufficiently long period, in order to
check the operation of the system and make the necessary modifications.