Teledyne D series Installation And Operation Manual page 224

D Series Syringe Pumps
Section 9 Pump Maintenance, Troubleshooting, and Servicing
To install the mounting
tabs
9-36
1. Disconnect the instrument from mains power.
2. Disconnect the pressure transducer cable from the pump,
and remove the tubing from the inlet and outlet ports.
3. Loosen the four cover screws and remove the front and
rear covers of the pump.
4. The cylinder must be unscrewed several turns to avoid
accidentally bottoming the piston out during calibration of
the limit sensor. Therefore, loosen the cylinder lock screw.
The lock screw is located in the front side of the cylinder
mounting block and is a
5. The limit sensor assembly includes two limit sensors, the
wire harness and connector, and a conduit which protects
the wires running between the sensors, Figure 9-38.
Depending upon when your pump was manufactured, the
protective conduit may be directly fastened to the pump or
retained with mounting tabs and cable ties.
If the conduit is fastened directly to the case, then it must
be removed and the plastic mounting tabs included with
the limit sensor assembly package should be installed
using the existing screws and screw holes.
a. Remove the screws and the conduit.
b. Then use the same screws and holes to install the
mounts. Be sure the tab portion of the mount is facing
away from the sensors, as shown in Figure 9-39, (the
screw aperture is closest to the sensors).
If your pump already has the plastic tabs installed, cut and
discard the plastic cable ties which run through the tabs
and hold the conduit.
6. Remove the four screws holding the limit sensors, and
unplug the cable from the power circuit board. (The
replacement limit sensor assembly includes both the upper
and lower sensor and the plug.)
Note
There are several additional cable ties along the path from the
limit sensors to the power board. Two are reusable twist ties
and (usually 3) others need to be cut to free the limit sensor
wires. These cable ties must be replaced to prevent the wires
from entangling with the worm gear.
7. Install the new limit sensor harness; and secure the protec-
tive conduit by running the cable ties through the mounts
and tightening. Then cut the excess cable tie and discard.
Note
Be sure the circuit board connector is mated pin-for-pin with
the jack.
1 
-20 setscrew.
4