Waters ACQUITY UPLC Overview And Maintenance Manual page 99

Support plate
Pump head
Plunger
Notice:
To avoid damaging the plunger, alternately tighten the support plate
screws 1/4-turn so that they are uniformly torqued.
2. Hold the pump head assembly securely against the actuator housing, and then use the
T27 TORX driver to tighten the support plate bolts securely.
Figure 3–73: Support-plate bolts on primary pump head
1
Support-plate bolts
3. Alternately tighten the head bolts so that they are uniformly torqued.
Figure 3–74: Head bolts on primary pump head
1
Head bolts
Notice:
To avoid pinching the drip wire between the pump-head assembly and
support plate, be sure to install the drip wire after tightening the head bolts.
4. Reinstall the drip wire around the pump head assembly, ensuring that the tip is in the 6
o'clock position.
August 8, 2016, 715005050 Rev. C
Page 99