The authors establish conditions for the existence of mild and strong solutions of a partial neutral functional-differential equation with unbounded delay of the form \[ (d/dt)(x(t)+F(t, x_t)) = Ax(t)+G(t, x_t) \] subject to pre-assigned moments of impulse effects. Here, \(A\) is the infinitesimal generator of a strongly continuous semigroup of linear operators on a Banach space, \(x_t\) is a Hale-type operator and \(F,G\) are given functions defined on a phase space. They also revisit an example presented in an earlier paper of the authors [J. Math Anal. Appl. 221, No. 2, 452--475 (1998; Zbl 0915.35110)] now considering that impulse conditions are imposed on the system.