crwdns2915892:0crwdne2915892:0
There are at least 2 major differences in La Pavonis Domus Bar. The model is close or similar to Lelit Anita.
But the newer models of Domus Bar (DMB) and Anita have a different brewing group than the older ones (slightly improved for replacements). This guide is for the older version, as far as I could find, from before 2007.
The new seal has the following dimensions:
71,5 x 54 x 4 mm
crwdns2942213:0crwdne2942213:0
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            Use your fingers or something else to put some pressure on the wrench and the nut, so you don’t tear it. 
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            The nut is quite flat, but you can open it with a 14mm wrench when you angle the wrench so it fits between the openings in the group case. 
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            Put the coffee machine in the back or if you can remove the bean collector, on the top. 
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            Remember to empty the water canister, the spill collectors. Turn off your machine and disconnect it from power. 
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            You don't need to open the machine for replacing the seal. 
 
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            Once the nut is removed, you’re able to remove the filter by prying it off. 
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            I recommend to do it from the sides and only if it’s an never serviced machine, you need to use some force. 
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            Clean the filter or replace it if damaged. You can also clean the brass element behind the filter. 
 
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            Remove the seal by prying it out of the group set. 
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            Make use of the cutouts in the group casing. 
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            Older seals can dry out and might break. That’s no problem as you need to replace the seal anyway. 
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            When adding the new seal, use the guide backwards. Make sure the seal fits well. Don’t tighten the copper screw too hard and clean or service the machine regularly. 
 
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To reassemble your device, follow these instructions in reverse order.
To reassemble your device, follow these instructions in reverse order.
