English to Russian Tech/Engineering Printing & Publishing Полиграфическое оборудование – устройство автоматической подачи краски

Что такое inductor plate и как полиграфисты это называют?
Из описания устройства:
- Air separator valve for withdrawing inductor plate when the ink fountain is to be replaced.
Из инструкций о запуске устройства:

At first set the limit switch operating on the ring, so that to stop the pump before (approx 2 cm) the inductor plate falling, has reached the ink fountain bottom.

Place a full ink fountain on the immersion piston base, push this back against the immersion piston supports and place under the centre of the inductor plate.

Put the director valve to the “down” position and lower until the inductor plate will just about enter the drum. Put the director valve to “off”, adjust the drum so that it is in line with the inductor plate and open inductor plate air bleeder. Put the director valve to “down” and lower until the material appears at the inductor plate air bleeder.

Из спецификации:
Inductor plate 19 litres size
Я думаю, что это вроде того, что показано здесь: http://www.sajotechnologies.com/_products/inkPump/Drum/2.htm... но не понимаю, при чем здесь литры.

Спасибо