Madas AGP/RC Serie Manual Del Usuario página 17

6.0 - MAINTENANCE
• Before carrying out any dismantling operation on the device, make sure that there is no pressurised gas inside.
Check the condition of the filter element as follows
• Loosen the fastening screws (3) and very carefully remove the cover (4) from the body (16);
• Extract the filter element and check its conditions. Blow it and clean it and, if necessary, replace it (see figures "a" and "b"
below for the positioning);
• Check the status of the cover's O-Ring (4) and replace if necessary;
• Make sure the sealing O-Ring of the cover (4) is inside the relevant groove before putting it back on;
• Reassemble the cover (4) and secure it in its original position, being very careful not to "pinch" or damage the O-ring during
tightening.
IMPORTANT:
1. for DN 15 ÷ DN 50 connections make sure that the centre pin is centred in the guide of the cover (4);
2. for DN 65 - DN 80 - DN 100 connections pay attention to the Teflon split ring: when reassembling the cover (4)
it must be placed inside the specific guide;
• Tighten the screws gradually, following a "cross" pattern, until the torque (tolerance -15%) indicated in table 2 on page 38
is reached. Use a calibrated torque wrench to do this.
• Check the body/cover tightness;
NOTE: for internal inspections, it is recommended to:
• Also check the obturator's integrity and, if necessary, replace the rubber seal;
• Replace the gaskets before reassembling.
• It is recommended to contact the Technical Department to check or replace the membranes.
fig. a: DN 15 ÷ DN 50 body without cover (4)
Filter element guides
Madas Technical Manual - 4|4.5 - REV. 0 of 10
The filter element
must be
placed inside
these guides
Oct 2018
th
fig. b: DN 65 ÷ DN 100 body without cover (4)
Filter element guides
17
The filter element must be
placed inside these guides
AGP/RC - AG/RC