Models 947, 948 and 960 Leak Detectors Operations and Service Manual
B-10
B.3.1.1 Removing the Turbo Pump
To replace the turbo pump:
1. Disconnect the mains power supply and make sure that all pumps are off.
WARNING
Disconnect power from the 947/948/960 before performing any
maintenance procedure that requires physically disconnecting
any part of the system.
CAUTION
Models 948/960 only:
Remove, empty, and clean the cold trap
whenever power is removed. Refer to “Liquid Nitrogen Cold
Trap (Models 948/960 only)” on page 4-10.
2. Remove the side panel.
3. Disconnect the power from the turbo pump by pushing the green sleeve on the end of
the connector in and then turning the sleeve to release the connector (Figure B-7).
Figure B-7
Turbo Power and Foreline to Turbo Connections
Turbo Power
NW16 Clamp
NW25 Clamp
to Upper Foreline
Connection
to Foreline
Connection
Connector
Summary of Contents for 948
Page 175: ......
