"Today flight commander Michael Foale and engineer Alexander Kaleri will install a new unit of the Elektron system for the production of oxygen in the International Space Station. Both the crewmen will spend three hours of their working time to replace the unit," Puzanov said.
"The faulty hydraulic unit began to form air bubbles preventing normal service of Elektron," the specialist explained. Later, the Elektron set will be modified so that no air bubbles can prevent its service.
Problems with the Russian oxygen set emerged a month ago. Starting from the end of last week Alexander Kaleri and Michael Foale have been trying to return it back to normal service. To maintain the required air composition the ISS crew have periodically been burning oxygen sticks and using the oxygen brought here by the space ferry Progress M1-11.