58
Teledyne API Model 465M O
3
Monitor User Manual
06160J DCN7969
7.
Turn over pump assembly and remove the two screws holding the sheet-metal
base to the pump.
8.
Install the base on the new pump.
9.
Install new pump assembly in chassis.
10.
Cut off the ends of the used Tygon tubing and reconnect tubing; note that outlet
fitting of pump should be connected to tubing routed to the ‘Exhaust’ fitting on
rear panel.
11.
Re-install new tubing clamps or cable-ties to secure tubing connections.
9.7.
Auto-Zero Valve Replacement
1.
Disconnect power from the 465M.
2.
Remove the six screws and the top cover (Rack Mount Configuration) or open
front panel (NEMA Configuration.)
3.
Locate the auto-zero valve (See Figure 9-1 or Figure 9-2.)
4.
Unplug the two-pin valve connector from the mainboard PCA.
5.
Remove the silver retainer clip from the top of the sensor valve. A pair of pliers
may be used to slide off the retainer clip.
6.
The valve coil can now be removed by sliding upwards.
7.
Remove the two (2) mounting screws using a #2 Phillips screwdriver. Note that
there are four screw heads visible on the top of the valve body, only two (2) of
these should be removed. Use the new valve as a reference to determine which
two screws need to be removed.
8.
Note the orientation of the valve body on the manifold so that the new valve can
be installed in the same orientation.
9.
Remove valve body from sensor manifold.
10.
Clean any residue or dirt off the surface of the manifold using a lint-free cloth and
distilled or DI water.
11.
Install the new valve by reversing steps 1-7.
9.8.
Configuring the Analog Output
The analog output can be configured for either 0-5V DC or 4-20mA operation. To
change or verify the configuration of the analog output:
1.
Disconnect power from the 465M.
2.
Remove the six screws and the top cover (Rack Mount Configuration) or open
front panel (NEMA Configuration.)