Maintenance and Calibration
Performing Sample Path and Case Leak Checks
5-28
PDM3700 Instruction Manual
Thermo Fisher Scientific
6.
When the process is complete, a leak check passed or failed message is
displayed on the screen. Remove the leak check putty. If the leak check
fails, refer to the Troubleshooting section for information about leak
failures.
7.
After the sample path leak check passes, select the “Leak Check Case”
button. A Warning/Confirmation screen will display with a “Place the
inlet adapter in the inlet” message. Install the case leak check suction
cup into the sample line (
Figure 5–39
). Select “OK.”
Figure 5–39.
Leak check suction cup installed in sample line
8.
Another Warning/Confirmation screen will display with a “Attach the
inlet adapter to the PDM” message. Install the suction cup side of the
leak check suction cup onto the battery compartment vent that is
located below the communication connections on the PDM3700
(
Figure 5–40
and
Figure 5–41
). Select the “OK” button. As with the
flow path leak check, the pump will start and draw a vacuum. When
the pump stops, press leak check putty firmly onto the exhaust muffler.
Figure 5–40.
Battery compartment vent
