D-Series Syringe Pumps - Isco

D Series Syringe Pumps: Model 65D
Section 2D 65D Liquid System Connections & Accessories
Reassembling the pump
1. Place the cylinder/cooling jacket assembly over the piston
and push rod assembly.
2. Screw the assembly into the cylinder housing until the cylinder
no longer turns. This indicates that it is snug against
the piston.
3. Unscrew the cylinder a minimum of 1 2 turn.
4. Line the inlet and outlet cylinder cap ports up as you had
them before. Turn the cooling jacket ports to the desired
location and lock the cooling jacket to the cylinder by tightening
the cooling jacket lock set screw.
5. Lock the cylinder by tightening the cylinder locking screw.
6. Replace the front cover and adjust both covers so they are
flush with the cylinder housing.
7. Reinstall tubing.
8. Reconnect the pump pressure transducer cable.
2D.4 Nitrogen Purge A thin film of liquid will wet the inside of the cylinder each time
the piston travels up the cylinder. Corrosive liquids drying in the
air can cause the cylinder to corrode. This corrosion occurs at
varying rates based on the liquids and pumping conditions being
employed. The lowest flow rate engenders the most corrosive
pumping environment, as the deposited film has the longest time
to corrode the inside of the cylinder wall.
The 65D pump is equipped with a purge connector (Figure 2D-5).
The purge connector enables the pump cylinder beneath the
piston to be purged with nitrogen which inhibits cylinder corrosion
and may increase the useful cylinder life. Figure 2D-5
shows a typical purge connection to the purge tube on the back of
the pump.
To install the nitrogen
(Figure 2D-5)
Attach gas supply by slipping the plastic tube over the
purge connector, see Figure 2D-5.
2D-6