M
AINTENANCE
.............................
Sievers M500e TOC Analyzer
Operation and Maintenance Manual
DLM 78510-02 EN Rev. B
280
SUEZ © 2022
15.
Enter the installation date for the UV lamp by following the procedures in
“Entering New Consumables Installation Dates” on page 287
16.
After changing the UV lamp, perform a TOC verification. Refer to
Precision Verification Protocol” on page 223
). Only re-calibrate if verification
indicates that a new calibration is necessary.
Replacing the Sample Pump Heads
The tubing for the sample pump heads loses elasticity over time and the sample pump
heads must be replaced annually to ensure proper flow rates. The pump heads must be
purchased from SUEZ.
Have paper towels available during the procedure in case water leaks from the old pump
heads during the removal process. Reference the
, as needed.
To replace the sample pump heads
1. If the Analyzer is taking measurements, click the
Stop Analysis
button.
2.
Shut off the water to the sample inlet system.
3.
On the Analyzer’s
Home
screen, click the
Power Off
button to close all the
files.
4.
Turn the rotary power switch (located on the left outside panel of the Analyzer)
to the
Off
position to complete the power off cycle.
5.
Open the door to access the inside of the Analyzer.
6.
Locate the sample pump heads (see
).
7.
Remove the tubing leading to and from the pump heads from the four barbs.
8.
Use a small Phillips-head (crosshead) screwdriver (from the Accessories kit)
to loosen the two screws that secure the pump heads. Remove the screws
and retain them.
9.
Pull both pump heads straight out and off the shaft. Use a paper towel to clean
any dripping that occurs.
Warning
To avoid potentially dangerous shock, BEFORE opening the Analyzer,
stop any analysis and power off the operating system. Click the Power
On/Off
button in the Analyzer’s firmware, then turn
off
the power
switch and disconnect from the power supply. Any operation requiring
access to the inside of the Analyzer without turning off power, including
installation of maintenance items, could result in injury.
