VAC Phi 220 - Manual (Page 7)

5
Tighten the four white nylon setscrews that secure the front glass using the
tool provided. Turn clockwise to tighten.
Do not over tighten.
Install the vacuum tubes.
Each tube or its box has a “V” number, which corresponds to the labels on the top plate of the
amplifier; these indicate where each tube should be installed.
Fit each tube into the matching socket, first
removing any sticker from the amplifier and/or the tube.
When inserting and removing tubes, handle them by their bases, not by their glass bulbs.
Note that there is a locator pin on the octal (eight contact) tubes that indicates proper alignment.
For the 300B tubes, two of the pins are of larger diameter, so that the tube will only fit into the
socket one way.
Set the beveled glass top into the aluminum top frame, oriented so that the
two holes are on the left and right side.
To prepare a Phi for shipment, follow these steps in reverse order.
When loosening the metal and nylon setscrews, be careful not to back them all of the way out of
the holes! If a metal screw falls into the amplifier, contact VAC for service directions.
NOTE: Do not remove and connect input cables or speaker cables while is amplifier is running.
Doing so risks damage to your loudspeakers or the amplifier.
Do not operate the amplifier without a loudspeaker or load resistor attached.