Models 947, 948 and 960 Leak Detectors Operations and Service Manual
B-29
B.5.2.2.5 Replacing the Exhaust Fitting
To perform this procedure:
1. Place the centering ring and O-ring against the right side pump outlet.
2. Place the exhaust manifold against the centering ring.
3. Place the NW16 clamp onto the connection and tighten fully.
B.5.2.2.6 Completing Mounting the Pump to the Cabinet Floor
To perform this procedure:
1. Working from under the leak detector, place the nuts on the mounting bolts that mount
the pump to the cabinet and tighten them fully.
2. Connect the pump power cord into the 947/948/960.
CAUTION
To ensure reliable testing, after servicing any part of the vacuum
system, the 947/948/960 must be leak checked again. Refer to
“Leak Checking” on page 4-5 for guidelines.
3. Replace the front panel.
4. Replace the side panel.
5. Reconnect the mains power supply.
6. Turn the leak detector on and wait for the system to be ready.
Allow the pumps to warm up if the detector has been off for some time.
NOTE
Allow a new pump to run for one hour and then perform an
autocal.
7.
Models 948/960 only:
Once the system has pumped down, clean and fill the Liquid
Nitrogen Cold Trap using the procedure described in “Liquid Nitrogen Cold Trap
(Models 948/960 only)” on page 4-10.
8. Calibrate the 947/948/960 using the procedure described in “Re-calibrate the Internal
9. Leak check the assembly before using the 947/948/960 for testing.
