If it is the only receiver on your account it would break your contract.
If the 625 is your only receiver ,then yes, you would be breaking your contract.Is deactivating a receiver and sending it back to Dish considered breaking the 18 month agreement? I want to take a 625 off my account.
If you remove ANY leased equipment from your account that is part of a commitment contract before the contract expires it is treated as a downgrade of service/equipment and you will be viewed as a contract breach.
You don't touch leased equipment during commitment periods. Not unless you enjoy large amounts on your bill. The sole exception is receiver exchanges in which case a leased receiver comes off and another goes on. The computers see the exchange so you aren't charged.
Is deactivating a receiver and sending it back to Dish considered breaking the 18 month agreement? I want to take a 625 off my account.