3-2 Using the Waters 515 Pump
Powering on the pump
Tip: If your 515 pump is connected to a Waters 680 Automated Gradient
Controller, and you power on the controller with the 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.
Make sure the pump is installed according to the instructions in “Installing
the Waters 515 Pump”. When the pump is powered on the first time, it
displays the factory default setting for each of its operating parameters. See
the table titled “515 pump operating parameters” on page 3-7 for parameter
details.
To power on the pump, locate the power switch on the left side panel and set it
to the 1 (ON) position. The power-on diagnostics begin.
Power-on diagnostics
Each time you turn power on, the pump automatically runs its internal
power-on diagnostics (the display does not indicate that the diagnostics are
running). The power-on diagnostics perform these tests and checks:
• EPROM check – Runs a checksum of the EPROM to confirm correct
EPROM data
• RAM test – Writes and confirms a series of bit patterns to the MPU
RAM
• MPU mode check – Confirms that the microprocessor unit is in the
correct mode
• FPGA configuration check – Confirms the proper configuration of the
Field Programmable Gate Array
• EEPROM check
1
– Runs a checksum of the EEPROM to confirm correct
EEPROM data
Once the unit successfully performs its internal power-on diagnostics, the
LCD display briefly (5 seconds) shows the pump model number (515), head
size (100-µL or 225-µL), and firmware version (Ver n.n). The display then
appears in its Ready state, as shown in the figure below. To redisplay the
1. In addition to running at power on, the EEPROM check runs every time you press the RUN/STOP key, and once
for every 5 hours that the pump has power.
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