3-26 Using the Waters 515 Pump
Powering off the pump
To power off the pump:
1. If you have been using buffers, purge the buffer from the pump and
other HPLC system components with HPLC-grade water. If the pump
has been idle for more than one day, purge with a methanol/water
solution to prevent the growth of organisms.
2. If the pump is running, press the Run/Stop key.
Tip: If your 515 pump is connected to a Waters 680 Automated Gradient
Controller, and you power on the controller with the 515 pump running
in the Remote mode, you may hear the pump operate briefly. This is due
to a spurious signal from the controller when it is powered on. To avoid
this situation, power on the controller before you power on the pump.
3. Turn the power switch to the 0 (Off) position.
Tip: Except for the Flow and Mode parameter values, all other 515 pump
parameter values are saved when power is turned off. When you power on the
pump again, Flow is set to its default value of 1.000, and Mode is set to its
default setting of Local.
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