ABS Provides, Operating Instructions Manual, Page: 22 / 32

EN
22
copper tubes maintenance).
torque shown in the table beside.
10. Maintenance and controls by the user
• Proceed as follow in order to assembly the header:
• Handle with care and avoid collisions that may damage the header;
• Always be sure you have a new spare rubber gasket and o-ring;
• Carefully clean gasket seatings with a solvent in order to remove any adhesive scraps;
• Apply a thin and even coat of adhesive (Bostik) on the seating of the rubber gasket;
• Place the anti-extrusion ring D and the new rubber gasket E in their seatings;
• Place the header C using the
centering
pins;
• Insert the screws without tighten;
• Replace the 2
centering
pins with the A and B screws;
• Tighten the screws following the tightening sequence as shown in fig.10.2.2 and with the appropriate
10.2 Header assembly and gasket replacement
Proceed as follow in order to disassembl e the header:
• Remove pipeline;
• Always be sure to totally drain the water before removing the header;
• Remove insulation from the front side of the heat exchanger (if present);
• Replace A and B screws with 2
centering pins (fig. 10.2.1);
• Remove all the other screws;
• Remove the header C;
• Remove the anti-extrusion ring D (if present) and the rubber gasket E;
• Remove the flanged ring F (if present);
• Remove the anti-extrusion ring L (if present) and the rubber gasket G;(last two points only applicable for
If it is a heat exchanger with anti corrosive treatment, check that there is no wear, chipping ar cracks, ect on
the treatment itself.
If it is a heat exchanger with anticorrosive treatment, be sure to handle with care to prevent the treatment
from chipping or being damaged. In such a case, the treatment must be
re-
applied to the damaged part.