Refinance a Delta Community CU consumer loan to receive lower rate

If I currently have a loan, can I refinance it in order to receive the current interest rate if it is lower?

Delta Community’s  tiered rates apply to new loans, refinancing loans that are currently with a different lender or when adding additional money to an existing Delta Community loan with a valid purpose. Existing Delta Community consumer loans cannot be refinanced for the sole purpose of lowering the interest rate.