Dead of easements happens at initial purchase.
if this is a second hand apartment, the deed has already been dealt with, you purchase subject to that deed.
It is your commitment to abide by the management company's rules and to give reasonable access to them, via your apartment, to perform maintenance or emergency work on the shared services.
Ask your solicitor how much conveyancing he has done.
Check with the Land Registry or Registry of Deeds as to the nature of the easements registered on your prospective purchase.
Take good notes and quote same back to your solicitor...if it transpires that he is misunderstanding the nature of Lease's of Easements, then he'll be quick enough to cop on.
If not, ask the Law Society to take a look, you are entitled to a second opinion or question his abilities.
For others thinking of buying - check out your solicitor well before employing him....some are better at conveyancing than others