I N S T R U C T I O N S
For the installation and maintenance of D C 1 5 2 5 - D C 1 5 5 0
d e s u p e r h e a t e r s
IMI0049E.doc
Rev.0 20/08/14
20090 SEGRATE (MI)- via E.Fermi
EMAIL:
TEL.(02) 269912.1 - FAX.(02) 2692.2452
Page 9 of 16
8.2
REMOVING THE PACKAGING
Carraro DC desuperheaters are packed with the utmost care in wooden crates or cardboard boxes so
that they are protected during handling and transport to their place of installation. After hydrostatic testing,
the desuperheater is flushed and carefully dried to protect the internal surfaces. Should any damage
occur during transport, however, the transport company or a representative of Carraro must be notified
immediately. Remove the packaging with care, then check that the surfaces of the flanges, threads,
actuators, connection pipes, etc. are not damaged (see Fig. 1).
8.3
INSTALLATION
Before installation, visually inspect the desuperheater, the actuator and any accessories, to make certain
that they are not damaged. Check that the information given in the documentation and on the data plate,
and the tag number correspond to the specifications of the order. Remove the desuperheater from its
package by lifting it with slings (for heavy loads) wrapped round its body. Do not lift the unit by the liquid
inlet connection, the actuator or other accessories. Do not remove the flange coverings until immediately
before installation.
During installation of the desuperheater, use gaskets and fasteners which comply with the appropriate
standards. Position the gasket on the mounting flange and gently insert the nozzle into the secondary
pipe. Before tightening the studs, check that the spray cylinder is directed in the same direction as the
process gas flow (see Fig. 2).
The desuperheater must not be installed in such a way that it is subject to tensions, forces and torque.
- Liquid flange positions -
PFAn
PFAe
PFAs
PFAw
- Handwheel positions -
PVn
PVe
PVs
PVw
Fig. 2
The DC desuperheater has a standard lower body length as specified in the contractual drawings,
whereas the mounting trunk of the process pipe must be made to measure. The length of this secondary
pipe must be such that the central axis of the spray cylinder corresponds with the central axis of the
vapour line (±5 mm). The nominal diameter of the mounting trunk must be as follows: for DC1525 25 m
3
/h
