Pump Seal Replacement - Teledyne ACCQPrep HP125 Installation And Operation Manual

Installing the New
Injection Valve Rotor
6.5.2 Pump Seal
Replacement
Figure 6-8 Front panel of the ACCQPrep
5. Clean and inspect the stator sealing surface (which con-
tacts the rotor) for scratches. If this part is scratched it
may need replacement also.
1. Place the new rotor into the recess with the
passages facing outward. The tabs on the rotor are not
symmetric so the rotor will only fit in one orientation.
2. Install the stator onto the locating pins and use a
side-to-side motion until secure.
3. Install the screws evenly until spring force is felt. Then
tighten the screws in quarter turn
increments on each side until the stator contacts the valve
body evenly. The rotor seal is accomplished by a spring so
excessive screw torque is not necessary.
1. Turn off the power to the system.
2. Access the pump compartment by gripping the edges of the
front panel and pulling forward on both sides (Figure 6-8).
3. Remove the two screws securing the pump assembly in
place using the included 3/16" hex wrench.
4. Disconnect the solvent inlet lines from the pump inlet tees
and disconnect the high pressure lines from the bulkhead
fittings.
5. Disconnect the cables from the pump assembly before pull-
ing it forward to avoid damage to the cables. The, pull the
pump assembly forward.
6. Remove the inlet fittings.
7. Remove the outlet fittings.
8. Remove the two pump head fasteners. Use the supplied
3/16" hex wrench (Figure 6-9).
ACCQPrep HP125
Section 6 Maintenance
6-9