Waters Prep Series Installation And Maintenance Manual page 139

4. Place the ball in the seat.
5. Lower the sleeve around the ball, placing it on the seat.
6. Place the retainer over the ball and seat assembly. Center it within the
pump head.
7. Place the seal guide into the outlet check valve housing. Press it into
place.
8. Place the outlet check valve housing over the retainer.
9. Hand tighten the assembly.
10. Tighten the outlet check valve, and attach the tubing.
To disassemble and reassemble dual outlet check valves:
Pumps fitted with 1000-µL heads require a dual outlet check valve
exploded view in the
1. If the flushing procedure in
not sufficiently clean the dual outlet check valve, disassemble the check
valve assembly as described in
page 3-51 and
2. Check the valve parts for damage. If none is apparent, put the parts in
methanol, in an ultrasonic bath, for 10 minutes. If a part is damaged,
replace it as necessary.
3. Reassemble the check valve assembly as described in
inlet check valves:" on page 3-53
valves:" on page
figure "Dual check valve assembly" on page
"Cleaning check valves" on page 3-51
"Disassembling inlet check valves" on
"To disassemble outlet check valves:" on page
and
3-54.
"To reassemble
"To reassemble outlet check
Maintenance procedures
, shown in
3-56.
does
3-53.
3-55