Varian 960 Operation And Service Manual page 101

Models 947, 948 and 960 Leak Detectors Operations and Service Manual
Power
switch/Circuit
breaker
Rough pump
switch
Detector switch
START button
VENT button
NOTE
Test Port
AC Power Input
Refer to Figure 3-7 and follow the start up procedure, listed in the next Section, and in
"Calibration and Sensitivity Checks" on page 3-29 procedure to put the 947/948/960 in a
Ready for Operation state from the All Systems off condition.
Main power switch and circuit breaker.
Powers the rough pump.
Powers the backing pump and high vacuum pump.
Starts the 947/948/960 testing routine. Press and hold for 1 second
to engage.
Opens the vent valve so test pieces can be removed or attached to
the detector. Press and hold for 1 second to engage.
If the VENT button is pressed for less than one second, the leak
detector moves to HOLD.
The unit under test is connected to this port using a test fixture, or a
plug is inserted for storage.
View of back of unit.
3-27