Telemark TT-10, Инструкция по эксплуатации

Страница: 36 / 38

4
Depress the Controller Reset, to reset interlocks. It will take
about 30 seconds for the HV/Power Cabinet fans to reach
normal speed. Once the fans have reached normal speed the
air switch will close, then the AIR/CAB interlock can be reset.
5
Observe the interlock lights. All should be on. If any of these
lights are not illuminated, the corresponding open interlock
must be located and the condition causing the open interlock
corrected. The high voltage and source filament are ready to be
turned on.
6
Turn on the high voltage by depressing the HV ON push-button.
NOTE: ALLOW APPROXIMATELY 1-5 MINUTES WARM-UP
BEFORE TURNING HV ON. FAILURE TO WAIT MAY CAUSE
DAMAGE AND VOID WARRANTY.
7
High voltage will now be applied to the electron beam source
and HV level will be indicated by the HIGH VOLTAGE meter.
8
Increase the VOLTAGE ADJUST potentiometer until the meter
reads the required operating voltage (normally 6-10 kV). This
affects the longitudinal beam position.
9
Turn the electron beam source on by depressing the SOURCE
ON push-button.
10
Turn on BIAS. If this is the first time or if the EB Source has
been cleaned or rebuilt then slowly increase BIAS ADJUST
trimmer until you see a small amount of emission current.
Check the EB source for a beam. Decrease this setting to
slightly below the point at which emission occurs. Leave the
trimmer at this setting.
11
Adjust kV to place beam in center of crucible pocket.
12
Increase the SOURCE EMISSION ADJUST to the required
operating level. Be sure the electron beam is in the center of
the pocket with the sweep turned off.
Operation
The system is now operational. The position of the beam in the crucible can be
moved or swept by adjustment of the sweeper controls.
5-2
OPERATION
Telemark TT-10/15 Power Supplies