TRIUMF has been funded to build an electron linac with a final energy of 50 MeV and 500 kW beam power using TESLA type 9-cell superconducting cavities operating at 1.3 GHz at 2 K [1]. The e-linac consists of an electron gun, buncher cavity, injector cryomodule (ICM), and two accelerator cryomodules (ACMs). The ICM has one 9-cell cavity whereas each of the ACMs contains two 9-cell cavities. One ICM and one ACM are scheduled to be installed by 2014. Six power couplers, each rated for 60 kW CW, have been procured for three cavities. The ICM will be fed by a 30 kW CW Inductive Output Tube (IOT) and each ACM will be powered by a 290 kW CW klystron. Before installing the power couplers with the cavities, they are to be assembled and conditioned with a high power RF source. A power coupler test station has been built and tests of two power couplers have begun. A 30 kW IOT has been commissioned to full output power and it will be used for the power coupler tests. In this paper, test results of the RF conditioning of the power couplers in pulse and CW mode will be described.