Maintaining the 1525 Pump
61
4
6.
Moisten the plunger seal and the plunger with methanol.
7.
Carefully slide the pump head over the plunger and onto the pump. Alternately
tighten the two screws.
Check for even head alignment by observing the gap between the pump head and
the pump head support assembly.
8.
In the Inlet Method window, set the Flow parameter to
1.0
mL/min, click
Save
, then
click
Load Method
to run the pump.
9.
While the pump is running, observe the movement of the indicator rod:
•
If the rod does not move smoothly, the head is misaligned. Click the
Stop Flow
button to stop the pump, loosen the pump head, then repeat steps 7 and 8.
•
If the rod snaps moves smoothly, click the
Stop Flow
button to stop the pump.
Continue with step 10.
10. Use the 1/2-inch adjustable wrench to hold the check valve housings in place.
Reconnect the inlet and outlet tubing assemblies to the pump head.
11. Prime the pump as described in
. If you notice leaks, verify
pump head and plunger seal installation as described in
4.4 Replacing 1525µ Check Valves
This section describes how to replace inlet, outlet, and restrictor tee check valves for the
1525µ Pump. Replace the inlet, outlet, and restrictor tee check valves every 6 months, or
more frequently if required by your application. Waters recommends keeping a spare set
of new check valves on hand.
Required Materials
•
5/16-inch open-end wrench (in Startup Kit)
•
1/2-inch adjustable wrench (in Startup Kit)
•
Priming syringe (in Startup Kit)
•
Replacement check valves
•
HPLC-grade methanol
•
Forceps
STOP
Attention:
Hold the pump head against the pump while tightening the
screws to avoid breaking the plunger.
Summary of Contents for 1525EF
Page 6: ......
