1. Check that all instruments indicate zero, if not, open DOWN needle valve until
zero indication is obtained.
2. Set power ON-OFF (12, figure 1-1) switch to OFF.
3. Raise hinged, panel (3) at top of test set and set
all selector valves on recessed
valve panel to CLOSED.
4. Disconnect instrument under test from fitting on rear panel of test
set.
5. Set VACUUM and PRESSURE selector valves (7 and 16) to OFF and close four
VACUUM and PRESSURE needle valves (10 and 15).
6. Disconnect test set from power source.
2-5