Wieland Provides Operating Instructions Manual page 31

EN
10. Maintenance and controls by the user
31
MAINTENANCE AND CONTROLS BY THE USER
DO NOT OPEN THE HEAT EXCHANGER UNDER PRESSURE
10.1 Lid assembly (only for some models)
Proceed as follows in order to remove the lid:
• always be sure that the oil separator/tank is totally empty
• remove insulation from If present
• replace A and B bolts with 2 centring pins (fig. 10.2.1);
• Remove all the other screws;
• Remove the header C;
• remove the rubber gasket
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 header C using the centring pins;
• Insert the screws without tighten;
• Replace the 2 centring 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
torque shown in the table beside.