Startup Procedure - Agilent Technologies 947 Betriebs- Und Servicehandbuch

Models 947, 948 and 960 Leak Detectors Operations and Service Manual
Power switch/Circuit
breaker
Rough pump switch
Detector switch
START button
VENT button
Test Port
AC Power Input
Refer to Figure 3-2 and follow the start up procedure, listed in the next Section, and in
Section 3.4, "Calibration and Sensitivity Checks" procedure to put the 947/948/960 in a
Ready for Operation state from the All Systems off condition.

3.3.1 Startup Procedure

To perform the start-up procedure:
1. Locate the main power switch/circuit breaker
turn it on.
2. Turn on the Rough
3. Turn on the Detector
4. Models 948/960 only: When the system pressure bar graph drops into the green range
(see Figure 1-3 on page 1-6), fill the cold trap with liquid nitrogen.
3-10
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.
NOTE
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.
pump switch.
switch.
WARNING
If the VENT button is pressed for less than one second,
the leak detector moves to HOLD.
on the back of the lower cabinet and
Liquid nitrogen causes burns upon contact. Use
appropriate protective devices, including heavy loose
gloves and eye or face shields.